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org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.ql.parse;
import java.io.IOException;
import java.io.Serializable;
import java.io.UnsupportedEncodingException;
import java.sql.Date;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;
import org.antlr.runtime.tree.Tree;
import org.antlr.runtime.TokenRewriteStream;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.tuple.Pair;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.common.FileUtils;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.metastore.api.Database;
import org.apache.hadoop.hive.metastore.api.FieldSchema;
import org.apache.hadoop.hive.metastore.api.Order;
import org.apache.hadoop.hive.metastore.api.SQLCheckConstraint;
import org.apache.hadoop.hive.metastore.api.SQLDefaultConstraint;
import org.apache.hadoop.hive.metastore.api.SQLForeignKey;
import org.apache.hadoop.hive.metastore.api.SQLNotNullConstraint;
import org.apache.hadoop.hive.metastore.api.SQLPrimaryKey;
import org.apache.hadoop.hive.metastore.api.SQLUniqueConstraint;
import org.apache.hadoop.hive.metastore.utils.MetaStoreUtils;
import org.apache.hadoop.hive.ql.CompilationOpContext;
import org.apache.hadoop.hive.ql.Context;
import org.apache.hadoop.hive.ql.ErrorMsg;
import org.apache.hadoop.hive.ql.QueryProperties;
import org.apache.hadoop.hive.ql.QueryState;
import org.apache.hadoop.hive.ql.cache.results.CacheUsage;
import org.apache.hadoop.hive.ql.cache.results.QueryResultsCache;
import org.apache.hadoop.hive.ql.exec.ColumnInfo;
import org.apache.hadoop.hive.ql.exec.FetchTask;
import org.apache.hadoop.hive.ql.exec.FunctionRegistry;
import org.apache.hadoop.hive.ql.exec.Task;
import org.apache.hadoop.hive.ql.exec.TaskFactory;
import org.apache.hadoop.hive.ql.exec.Utilities;
import org.apache.hadoop.hive.ql.hooks.LineageInfo;
import org.apache.hadoop.hive.ql.hooks.ReadEntity;
import org.apache.hadoop.hive.ql.hooks.WriteEntity;
import org.apache.hadoop.hive.ql.io.IgnoreKeyTextOutputFormat;
import org.apache.hadoop.hive.ql.lib.Node;
import org.apache.hadoop.hive.ql.lockmgr.HiveTxnManager;
import org.apache.hadoop.hive.ql.metadata.Hive;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.metadata.InvalidTableException;
import org.apache.hadoop.hive.ql.metadata.Partition;
import org.apache.hadoop.hive.ql.metadata.Table;
import org.apache.hadoop.hive.ql.metadata.VirtualColumn;
import org.apache.hadoop.hive.ql.optimizer.listbucketingpruner.ListBucketingPrunerUtils;
import org.apache.hadoop.hive.ql.plan.DDLDesc.DDLDescWithWriteId;
import org.apache.hadoop.hive.ql.plan.ExprNodeConstantDesc;
import org.apache.hadoop.hive.ql.plan.ExprNodeDesc;
import org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc;
import org.apache.hadoop.hive.ql.plan.FetchWork;
import org.apache.hadoop.hive.ql.plan.FileSinkDesc;
import org.apache.hadoop.hive.ql.plan.ListBucketingCtx;
import org.apache.hadoop.hive.ql.plan.PlanUtils;
import org.apache.hadoop.hive.ql.plan.TableDesc;
import org.apache.hadoop.hive.ql.session.SessionState;
import org.apache.hadoop.hive.ql.session.SessionState.LogHelper;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDFCurrentDate;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDFCurrentTimestamp;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDFCurrentUser;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDFOPNull;
import org.apache.hadoop.hive.serde.serdeConstants;
import org.apache.hadoop.hive.serde2.io.DateWritable;
import org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoUtils;
import org.apache.hadoop.mapred.TextInputFormat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableList;
import static org.apache.hadoop.hive.metastore.Warehouse.DEFAULT_CATALOG_NAME;
import static org.apache.hadoop.hive.metastore.utils.MetaStoreUtils.getDefaultCatalog;
/**
* BaseSemanticAnalyzer.
*
*/
public abstract class BaseSemanticAnalyzer {
protected static final Logger STATIC_LOG = LoggerFactory.getLogger(BaseSemanticAnalyzer.class.getName());
// Assumes one instance of this + single-threaded compilation for each query.
protected final Hive db;
protected final HiveConf conf;
protected final QueryState queryState;
protected List> rootTasks;
protected FetchTask fetchTask;
protected final Logger LOG;
protected final LogHelper console;
protected CompilationOpContext cContext;
protected Context ctx;
protected HashMap idToTableNameMap;
protected QueryProperties queryProperties;
/**
* A set of FileSinkOperators being written to in an ACID compliant way. We need to remember
* them here because when we build them we don't yet know the write id. We need to go
* back and set it once we actually start running the query.
* This also contains insert-only sinks.
*/
protected Set acidFileSinks = new HashSet();
// whether any ACID table or Insert-only (mm) table is involved in a query
// They both require DbTxnManager and both need to recordValidTxns when acquiring locks in Driver
protected boolean transactionalInQuery;
protected HiveTxnManager txnManager;
public static final int HIVE_COLUMN_ORDER_ASC = 1;
public static final int HIVE_COLUMN_ORDER_DESC = 0;
public static final int HIVE_COLUMN_NULLS_FIRST = 0;
public static final int HIVE_COLUMN_NULLS_LAST = 1;
/**
* ReadEntities that are passed to the hooks.
*/
protected HashSet inputs;
/**
* List of WriteEntities that are passed to the hooks.
*/
protected HashSet outputs;
/**
* Lineage information for the query.
*/
protected LineageInfo linfo;
protected TableAccessInfo tableAccessInfo;
protected ColumnAccessInfo columnAccessInfo;
protected CacheUsage cacheUsage;
/**
* Columns accessed by updates
*/
protected ColumnAccessInfo updateColumnAccessInfo;
/**
* the value of set autocommit true|false
* It's an object to make sure it's {@code null} if the parsed statement is
* not 'set autocommit...'
*/
private Boolean autoCommitValue;
public Boolean getAutoCommitValue() {
return autoCommitValue;
}
void setAutoCommitValue(Boolean autoCommit) {
autoCommitValue = autoCommit;
}
public boolean skipAuthorization() {
return false;
}
class RowFormatParams {
String fieldDelim = null;
String fieldEscape = null;
String collItemDelim = null;
String mapKeyDelim = null;
String lineDelim = null;
String nullFormat = null;
protected void analyzeRowFormat(ASTNode child) throws SemanticException {
child = (ASTNode) child.getChild(0);
int numChildRowFormat = child.getChildCount();
for (int numC = 0; numC < numChildRowFormat; numC++) {
ASTNode rowChild = (ASTNode) child.getChild(numC);
switch (rowChild.getToken().getType()) {
case HiveParser.TOK_TABLEROWFORMATFIELD:
fieldDelim = unescapeSQLString(rowChild.getChild(0)
.getText());
if (rowChild.getChildCount() >= 2) {
fieldEscape = unescapeSQLString(rowChild
.getChild(1).getText());
}
break;
case HiveParser.TOK_TABLEROWFORMATCOLLITEMS:
collItemDelim = unescapeSQLString(rowChild
.getChild(0).getText());
break;
case HiveParser.TOK_TABLEROWFORMATMAPKEYS:
mapKeyDelim = unescapeSQLString(rowChild.getChild(0)
.getText());
break;
case HiveParser.TOK_TABLEROWFORMATLINES:
lineDelim = unescapeSQLString(rowChild.getChild(0)
.getText());
if (!lineDelim.equals("\n")
&& !lineDelim.equals("10")) {
throw new SemanticException(SemanticAnalyzer.generateErrorMessage(rowChild,
ErrorMsg.LINES_TERMINATED_BY_NON_NEWLINE.getMsg()));
}
break;
case HiveParser.TOK_TABLEROWFORMATNULL:
nullFormat = unescapeSQLString(rowChild.getChild(0)
.getText());
break;
default:
throw new AssertionError("Unkown Token: " + rowChild);
}
}
}
}
public BaseSemanticAnalyzer(QueryState queryState) throws SemanticException {
this(queryState, createHiveDB(queryState.getConf()));
}
public BaseSemanticAnalyzer(QueryState queryState, Hive db) throws SemanticException {
try {
this.queryState = queryState;
this.conf = queryState.getConf();
this.db = db;
rootTasks = new ArrayList>();
LOG = LoggerFactory.getLogger(this.getClass().getName());
console = new LogHelper(LOG);
idToTableNameMap = new HashMap();
inputs = new LinkedHashSet();
outputs = new LinkedHashSet();
txnManager = queryState.getTxnManager();
} catch (Exception e) {
throw new SemanticException(e);
}
}
protected static Hive createHiveDB(HiveConf conf) throws SemanticException {
try {
return Hive.get(conf);
} catch (HiveException e) {
throw new SemanticException(e);
}
}
public HashMap getIdToTableNameMap() {
return idToTableNameMap;
}
public abstract void analyzeInternal(ASTNode ast) throws SemanticException;
public void init(boolean clearPartsCache) {
//no-op
}
public void initCtx(Context ctx) {
this.ctx = ctx;
}
public void analyze(ASTNode ast, Context ctx) throws SemanticException {
initCtx(ctx);
init(true);
analyzeInternal(ast);
}
public void validate() throws SemanticException {
// Implementations may choose to override this
}
public List> getRootTasks() {
return rootTasks;
}
/**
* @return the fetchTask
*/
public FetchTask getFetchTask() {
return fetchTask;
}
/**
* @param fetchTask
* the fetchTask to set
*/
public void setFetchTask(FetchTask fetchTask) {
this.fetchTask = fetchTask;
}
protected void reset(boolean clearPartsCache) {
rootTasks = new ArrayList>();
}
public static String stripIdentifierQuotes(String val) {
if ((val.charAt(0) == '`' && val.charAt(val.length() - 1) == '`')) {
val = val.substring(1, val.length() - 1);
}
return val;
}
public static String stripQuotes(String val) {
return PlanUtils.stripQuotes(val);
}
public static String charSetString(String charSetName, String charSetString)
throws SemanticException {
try {
// The character set name starts with a _, so strip that
charSetName = charSetName.substring(1);
if (charSetString.charAt(0) == '\'') {
return new String(unescapeSQLString(charSetString).getBytes(),
charSetName);
} else // hex input is also supported
{
assert charSetString.charAt(0) == '0';
assert charSetString.charAt(1) == 'x';
charSetString = charSetString.substring(2);
byte[] bArray = new byte[charSetString.length() / 2];
int j = 0;
for (int i = 0; i < charSetString.length(); i += 2) {
int val = Character.digit(charSetString.charAt(i), 16) * 16
+ Character.digit(charSetString.charAt(i + 1), 16);
if (val > 127) {
val = val - 256;
}
bArray[j++] = (byte)val;
}
String res = new String(bArray, charSetName);
return res;
}
} catch (UnsupportedEncodingException e) {
throw new SemanticException(e);
}
}
/**
* Get dequoted name from a table/column node.
* @param tableOrColumnNode the table or column node
* @return for table node, db.tab or tab. for column node column.
*/
public static String getUnescapedName(ASTNode tableOrColumnNode) {
return getUnescapedName(tableOrColumnNode, null);
}
public static Map.Entry getDbTableNamePair(ASTNode tableNameNode) {
assert(tableNameNode.getToken().getType() == HiveParser.TOK_TABNAME);
if (tableNameNode.getChildCount() == 2) {
String dbName = unescapeIdentifier(tableNameNode.getChild(0).getText());
String tableName = unescapeIdentifier(tableNameNode.getChild(1).getText());
return Pair.of(dbName, tableName);
} else {
String tableName = unescapeIdentifier(tableNameNode.getChild(0).getText());
return Pair.of(null,tableName);
}
}
public static String getUnescapedName(ASTNode tableOrColumnNode, String currentDatabase) {
int tokenType = tableOrColumnNode.getToken().getType();
if (tokenType == HiveParser.TOK_TABNAME) {
// table node
Map.Entry dbTablePair = getDbTableNamePair(tableOrColumnNode);
String dbName = dbTablePair.getKey();
String tableName = dbTablePair.getValue();
if (dbName != null){
return dbName + "." + tableName;
}
if (currentDatabase != null) {
return currentDatabase + "." + tableName;
}
return tableName;
} else if (tokenType == HiveParser.StringLiteral) {
return unescapeSQLString(tableOrColumnNode.getText());
}
// column node
return unescapeIdentifier(tableOrColumnNode.getText());
}
public static String[] getQualifiedTableName(ASTNode tabNameNode) throws SemanticException {
if (tabNameNode.getType() != HiveParser.TOK_TABNAME ||
(tabNameNode.getChildCount() != 1 && tabNameNode.getChildCount() != 2)) {
throw new SemanticException(ErrorMsg.INVALID_TABLE_NAME.getMsg(tabNameNode));
}
if (tabNameNode.getChildCount() == 2) {
String dbName = unescapeIdentifier(tabNameNode.getChild(0).getText());
String tableName = unescapeIdentifier(tabNameNode.getChild(1).getText());
return new String[] {dbName, tableName};
}
String tableName = unescapeIdentifier(tabNameNode.getChild(0).getText());
return Utilities.getDbTableName(tableName);
}
public static String getDotName(String[] qname) throws SemanticException {
String genericName = StringUtils.join(qname, ".");
if (qname.length != 2) {
throw new SemanticException(ErrorMsg.INVALID_TABLE_NAME, genericName);
}
return genericName;
}
/**
* Get the unqualified name from a table node.
*
* This method works for table names qualified with their schema (e.g., "db.table")
* and table names without schema qualification. In both cases, it returns
* the table name without the schema.
*
* @param node the table node
* @return the table name without schema qualification
* (i.e., if name is "db.table" or "table", returns "table")
*/
public static String getUnescapedUnqualifiedTableName(ASTNode node) {
assert node.getChildCount() <= 2;
if (node.getChildCount() == 2) {
node = (ASTNode) node.getChild(1);
}
return getUnescapedName(node);
}
/**
* Remove the encapsulating "`" pair from the identifier. We allow users to
* use "`" to escape identifier for table names, column names and aliases, in
* case that coincide with Hive language keywords.
*/
public static String unescapeIdentifier(String val) {
if (val == null) {
return null;
}
if (val.charAt(0) == '`' && val.charAt(val.length() - 1) == '`') {
val = val.substring(1, val.length() - 1);
}
return val;
}
/**
* Converts parsed key/value properties pairs into a map.
*
* @param prop ASTNode parent of the key/value pairs
*
* @param mapProp property map which receives the mappings
*/
public static void readProps(
ASTNode prop, Map mapProp) {
for (int propChild = 0; propChild < prop.getChildCount(); propChild++) {
String key = unescapeSQLString(prop.getChild(propChild).getChild(0)
.getText());
String value = null;
if (prop.getChild(propChild).getChild(1) != null) {
value = unescapeSQLString(prop.getChild(propChild).getChild(1).getText());
}
mapProp.put(key, value);
}
}
@SuppressWarnings("nls")
public static String unescapeSQLString(String b) {
Character enclosure = null;
// Some of the strings can be passed in as unicode. For example, the
// delimiter can be passed in as \002 - So, we first check if the
// string is a unicode number, else go back to the old behavior
StringBuilder sb = new StringBuilder(b.length());
for (int i = 0; i < b.length(); i++) {
char currentChar = b.charAt(i);
if (enclosure == null) {
if (currentChar == '\'' || b.charAt(i) == '\"') {
enclosure = currentChar;
}
// ignore all other chars outside the enclosure
continue;
}
if (enclosure.equals(currentChar)) {
enclosure = null;
continue;
}
if (currentChar == '\\' && (i + 6 < b.length()) && b.charAt(i + 1) == 'u') {
int code = 0;
int base = i + 2;
for (int j = 0; j < 4; j++) {
int digit = Character.digit(b.charAt(j + base), 16);
code = (code << 4) + digit;
}
sb.append((char)code);
i += 5;
continue;
}
if (currentChar == '\\' && (i + 4 < b.length())) {
char i1 = b.charAt(i + 1);
char i2 = b.charAt(i + 2);
char i3 = b.charAt(i + 3);
if ((i1 >= '0' && i1 <= '1') && (i2 >= '0' && i2 <= '7')
&& (i3 >= '0' && i3 <= '7')) {
byte bVal = (byte) ((i3 - '0') + ((i2 - '0') * 8) + ((i1 - '0') * 8 * 8));
byte[] bValArr = new byte[1];
bValArr[0] = bVal;
String tmp = new String(bValArr);
sb.append(tmp);
i += 3;
continue;
}
}
if (currentChar == '\\' && (i + 2 < b.length())) {
char n = b.charAt(i + 1);
switch (n) {
case '0':
sb.append("\0");
break;
case '\'':
sb.append("'");
break;
case '"':
sb.append("\"");
break;
case 'b':
sb.append("\b");
break;
case 'n':
sb.append("\n");
break;
case 'r':
sb.append("\r");
break;
case 't':
sb.append("\t");
break;
case 'Z':
sb.append("\u001A");
break;
case '\\':
sb.append("\\");
break;
// The following 2 lines are exactly what MySQL does TODO: why do we do this?
case '%':
sb.append("\\%");
break;
case '_':
sb.append("\\_");
break;
default:
sb.append(n);
}
i++;
} else {
sb.append(currentChar);
}
}
return sb.toString();
}
/**
* Escapes the string for AST; doesn't enclose it in quotes, however.
*/
public static String escapeSQLString(String b) {
// There's usually nothing to escape so we will be optimistic.
String result = b;
for (int i = 0; i < result.length(); ++i) {
char currentChar = result.charAt(i);
if (currentChar == '\\' && ((i + 1) < result.length())) {
// TODO: do we need to handle the "this is what MySQL does" here?
char nextChar = result.charAt(i + 1);
if (nextChar == '%' || nextChar == '_') {
++i;
continue;
}
}
switch (currentChar) {
case '\0': result = spliceString(result, i, "\\0"); ++i; break;
case '\'': result = spliceString(result, i, "\\'"); ++i; break;
case '\"': result = spliceString(result, i, "\\\""); ++i; break;
case '\b': result = spliceString(result, i, "\\b"); ++i; break;
case '\n': result = spliceString(result, i, "\\n"); ++i; break;
case '\r': result = spliceString(result, i, "\\r"); ++i; break;
case '\t': result = spliceString(result, i, "\\t"); ++i; break;
case '\\': result = spliceString(result, i, "\\\\"); ++i; break;
case '\u001A': result = spliceString(result, i, "\\Z"); ++i; break;
default: {
if (currentChar < ' ') {
String hex = Integer.toHexString(currentChar);
String unicode = "\\u";
for (int j = 4; j > hex.length(); --j) {
unicode += '0';
}
unicode += hex;
result = spliceString(result, i, unicode);
i += (unicode.length() - 1);
}
break; // if not a control character, do nothing
}
}
}
return result;
}
private static String spliceString(String str, int i, String replacement) {
return spliceString(str, i, 1, replacement);
}
private static String spliceString(String str, int i, int length, String replacement) {
return str.substring(0, i) + replacement + str.substring(i + length);
}
public HashSet getInputs() {
return inputs;
}
public HashSet getOutputs() {
return outputs;
}
/**
* @return the schema for the fields which will be produced
* when the statement is executed, or null if not known
*/
public List getResultSchema() {
return null;
}
protected List getColumns(ASTNode ast) throws SemanticException {
return getColumns(ast, true, conf);
}
/**
* Get the list of FieldSchema out of the ASTNode.
*/
public static List getColumns(ASTNode ast, boolean lowerCase, Configuration conf)
throws SemanticException {
return getColumns(ast, lowerCase, null, new ArrayList<>(), new ArrayList<>(), new ArrayList<>(),
new ArrayList<>(), new ArrayList<>(), new ArrayList<>(), conf);
}
private static class ConstraintInfo {
final String colName;
final String constraintName;
final boolean enable;
final boolean validate;
final boolean rely;
final String defaultValue;
ConstraintInfo(String colName, String constraintName,
boolean enable, boolean validate, boolean rely) {
this.colName = colName;
this.constraintName = constraintName;
this.enable = enable;
this.validate = validate;
this.rely = rely;
this.defaultValue = null;
}
ConstraintInfo(String colName, String constraintName,
boolean enable, boolean validate, boolean rely, String defaultValue) {
this.colName = colName;
this.constraintName = constraintName;
this.enable = enable;
this.validate = validate;
this.rely = rely;
this.defaultValue = defaultValue;
}
}
/**
* Process the primary keys from the ast node and populate the SQLPrimaryKey list.
*/
protected static void processPrimaryKeys(String databaseName, String tableName,
ASTNode child, List primaryKeys) throws SemanticException {
List primaryKeyInfos = new ArrayList();
generateConstraintInfos(child, primaryKeyInfos);
constraintInfosToPrimaryKeys(databaseName, tableName, primaryKeyInfos, primaryKeys);
}
protected static void processPrimaryKeys(String databaseName, String tableName,
ASTNode child, List columnNames, List primaryKeys)
throws SemanticException {
List primaryKeyInfos = new ArrayList();
generateConstraintInfos(child, columnNames, primaryKeyInfos, null, null);
constraintInfosToPrimaryKeys(databaseName, tableName, primaryKeyInfos, primaryKeys);
}
private static void constraintInfosToPrimaryKeys(String databaseName, String tableName,
List primaryKeyInfos, List primaryKeys) {
int i = 1;
for (ConstraintInfo primaryKeyInfo : primaryKeyInfos) {
primaryKeys.add(new SQLPrimaryKey(databaseName, tableName, primaryKeyInfo.colName,
i++, primaryKeyInfo.constraintName, primaryKeyInfo.enable,
primaryKeyInfo.validate, primaryKeyInfo.rely));
}
}
/**
* Process the unique constraints from the ast node and populate the SQLUniqueConstraint list.
*/
protected static void processUniqueConstraints(String catName, String databaseName, String tableName,
ASTNode child, List uniqueConstraints) throws SemanticException {
List uniqueInfos = new ArrayList();
generateConstraintInfos(child, uniqueInfos);
constraintInfosToUniqueConstraints(catName, databaseName, tableName, uniqueInfos, uniqueConstraints);
}
protected static void processUniqueConstraints(String catName, String databaseName, String tableName,
ASTNode child, List columnNames, List uniqueConstraints)
throws SemanticException {
List uniqueInfos = new ArrayList();
generateConstraintInfos(child, columnNames, uniqueInfos, null, null);
constraintInfosToUniqueConstraints(catName, databaseName, tableName, uniqueInfos, uniqueConstraints);
}
private static void constraintInfosToUniqueConstraints(String catName, String databaseName, String tableName,
List uniqueInfos, List uniqueConstraints) {
int i = 1;
for (ConstraintInfo uniqueInfo : uniqueInfos) {
uniqueConstraints.add(new SQLUniqueConstraint(catName, databaseName, tableName, uniqueInfo.colName,
i++, uniqueInfo.constraintName, uniqueInfo.enable, uniqueInfo.validate, uniqueInfo.rely));
}
}
protected static void processCheckConstraints(String catName, String databaseName, String tableName,
ASTNode child, List columnNames,
List checkConstraints, final ASTNode typeChild,
final TokenRewriteStream tokenRewriteStream)
throws SemanticException {
List checkInfos = new ArrayList();
generateConstraintInfos(child, columnNames, checkInfos, typeChild, tokenRewriteStream);
constraintInfosToCheckConstraints(catName, databaseName, tableName, checkInfos, checkConstraints);
}
private static void constraintInfosToCheckConstraints(String catName, String databaseName, String tableName,
List checkInfos,
List checkConstraints) {
for (ConstraintInfo checkInfo : checkInfos) {
checkConstraints.add(new SQLCheckConstraint(catName, databaseName, tableName, checkInfo.colName,
checkInfo.defaultValue, checkInfo.constraintName, checkInfo.enable,
checkInfo.validate, checkInfo.rely));
}
}
protected static void processDefaultConstraints(String catName, String databaseName, String tableName,
ASTNode child, List columnNames, List defaultConstraints, final ASTNode typeChild,
final TokenRewriteStream tokenRewriteStream)
throws SemanticException {
List defaultInfos = new ArrayList();
generateConstraintInfos(child, columnNames, defaultInfos, typeChild, tokenRewriteStream);
constraintInfosToDefaultConstraints(catName, databaseName, tableName, defaultInfos, defaultConstraints);
}
private static void constraintInfosToDefaultConstraints(
String catName, String databaseName, String tableName,
List defaultInfos, List defaultConstraints) {
for (ConstraintInfo defaultInfo : defaultInfos) {
defaultConstraints.add(new SQLDefaultConstraint(catName, databaseName, tableName,
defaultInfo.colName, defaultInfo.defaultValue, defaultInfo.constraintName,
defaultInfo.enable, defaultInfo.validate, defaultInfo.rely));
}
}
protected static void processNotNullConstraints(String catName, String databaseName, String tableName,
ASTNode child, List columnNames, List notNullConstraints)
throws SemanticException {
List notNullInfos = new ArrayList();
generateConstraintInfos(child, columnNames, notNullInfos, null, null);
constraintInfosToNotNullConstraints(catName, databaseName, tableName, notNullInfos, notNullConstraints);
}
private static void constraintInfosToNotNullConstraints(
String catName, String databaseName, String tableName, List notNullInfos,
List notNullConstraints) {
for (ConstraintInfo notNullInfo : notNullInfos) {
notNullConstraints.add(new SQLNotNullConstraint(catName, databaseName, tableName,
notNullInfo.colName, notNullInfo.constraintName, notNullInfo.enable, notNullInfo.validate,
notNullInfo.rely));
}
}
/**
* Get the constraint from the AST and populate the cstrInfos with the required
* information.
* @param child The node with the constraint token
* @param cstrInfos Constraint information
* @throws SemanticException
*/
private static void generateConstraintInfos(ASTNode child,
List cstrInfos) throws SemanticException {
ImmutableList.Builder columnNames = ImmutableList.builder();
for (int j = 0; j < child.getChild(0).getChildCount(); j++) {
Tree columnName = child.getChild(0).getChild(j);
checkColumnName(columnName.getText());
columnNames.add(unescapeIdentifier(columnName.getText().toLowerCase()));
}
generateConstraintInfos(child, columnNames.build(), cstrInfos, null, null);
}
private static boolean isDefaultValueAllowed(final ExprNodeDesc defaultValExpr) {
if(defaultValExpr instanceof ExprNodeConstantDesc) {
return true;
}
else if(FunctionRegistry.isOpCast(defaultValExpr)) {
return isDefaultValueAllowed(defaultValExpr.getChildren().get(0));
}
else if(defaultValExpr instanceof ExprNodeGenericFuncDesc){
ExprNodeGenericFuncDesc defFunc = (ExprNodeGenericFuncDesc)defaultValExpr;
if(defFunc.getGenericUDF() instanceof GenericUDFOPNull
|| defFunc.getGenericUDF() instanceof GenericUDFCurrentTimestamp
|| defFunc.getGenericUDF() instanceof GenericUDFCurrentDate
|| defFunc.getGenericUDF() instanceof GenericUDFCurrentUser){
return true;
}
}
return false;
}
// given an ast node this method recursively goes over checkExpr ast. If it finds a node of type TOK_SUBQUERY_EXPR
// it throws an error.
// This method is used to validate check expression since check expression isn't allowed to have subquery
private static void validateCheckExprAST(ASTNode checkExpr) throws SemanticException {
if(checkExpr == null) return;
if(checkExpr.getType() == HiveParser.TOK_SUBQUERY_EXPR) {
throw new SemanticException(ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("Subqueries are not allowed "
+ "in Check Constraints"));
}
for(int i=0; i cols, List checkConstraints,
Configuration conf)
throws SemanticException{
// create colinfo and then row resolver
RowResolver rr = new RowResolver();
for(FieldSchema col: cols) {
ColumnInfo ci = new ColumnInfo(col.getName(),TypeInfoUtils.getTypeInfoFromTypeString(col.getType()),
null, false);
rr.put(null, col.getName(), ci);
}
TypeCheckCtx typeCheckCtx = new TypeCheckCtx(rr);
// TypeCheckProcFactor expects typecheckctx to have unparse translator
UnparseTranslator unparseTranslator = new UnparseTranslator(conf);
typeCheckCtx.setUnparseTranslator(unparseTranslator);
for(SQLCheckConstraint cc:checkConstraints) {
try {
ParseDriver parseDriver = new ParseDriver();
ASTNode checkExprAST = parseDriver.parseExpression(cc.getCheck_expression());
validateCheckExprAST(checkExprAST);
Map genExprs = TypeCheckProcFactory
.genExprNode(checkExprAST, typeCheckCtx);
ExprNodeDesc checkExpr = genExprs.get(checkExprAST);
if(checkExpr == null) {
throw new SemanticException(
ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("Invalid type for CHECK constraint: ")
+ cc.getCheck_expression());
}
if(checkExpr.getTypeInfo().getTypeName() != serdeConstants.BOOLEAN_TYPE_NAME) {
throw new SemanticException(
ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("Only boolean type is supported for CHECK constraint: ")
+ cc.getCheck_expression() + ". Found: " + checkExpr.getTypeInfo().getTypeName());
}
validateCheckExpr(checkExpr);
} catch(Exception e) {
throw new SemanticException(
ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("Invalid CHECK constraint expression: ")
+ cc.getCheck_expression() + ". " + e.getMessage());
}
}
}
private static String getCheckExpression(ASTNode checkExprAST, final TokenRewriteStream tokenRewriteStream)
throws SemanticException{
return tokenRewriteStream.toOriginalString(checkExprAST.getTokenStartIndex(), checkExprAST.getTokenStopIndex());
}
/**
* Validate and get the default value from the AST
* @param defaultValueAST AST node corresponding to default value
* @return retrieve the default value and return it as string
* @throws SemanticException
*/
private static String getDefaultValue(ASTNode defaultValueAST, ASTNode typeChild,
final TokenRewriteStream tokenStream) throws SemanticException{
// first create expression from defaultValueAST
TypeCheckCtx typeCheckCtx = new TypeCheckCtx(null);
ExprNodeDesc defaultValExpr = TypeCheckProcFactory
.genExprNode(defaultValueAST, typeCheckCtx).get(defaultValueAST);
if(defaultValExpr == null) {
throw new SemanticException(
ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("Invalid Default value!"));
}
//get default value to be be stored in metastore
String defaultValueText = tokenStream.toOriginalString(defaultValueAST.getTokenStartIndex(),
defaultValueAST.getTokenStopIndex());
final int DEFAULT_MAX_LEN = 255;
if(defaultValueText.length() > DEFAULT_MAX_LEN) {
throw new SemanticException(
ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("Invalid Default value: " + defaultValueText +
" .Maximum character length allowed is " + DEFAULT_MAX_LEN +" ."));
}
// Make sure the default value expression type is exactly same as column's type.
TypeInfo defaultValTypeInfo = defaultValExpr.getTypeInfo();
TypeInfo colTypeInfo = TypeInfoUtils.getTypeInfoFromTypeString(getTypeStringFromAST(typeChild));
if(!defaultValTypeInfo.equals(colTypeInfo)) {
throw new SemanticException(
ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("Invalid type: " + defaultValTypeInfo.getTypeName()
+ " for default value: "
+ defaultValueText
+ ". Please make sure that the type is compatible with column type: "
+ colTypeInfo.getTypeName()));
}
// throw an error if default value isn't what hive allows
if(!isDefaultValueAllowed(defaultValExpr)) {
throw new SemanticException(
ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("Invalid Default value: " + defaultValueText
+ ". DEFAULT only allows constant or function expressions"));
}
return defaultValueText;
}
/**
* Get the constraint from the AST and populate the cstrInfos with the required
* information.
* @param child The node with the constraint token
* @param columnNames The name of the columns for the primary key
* @param cstrInfos Constraint information
* @param typeChildForDefault type of column used for default value type check
* @throws SemanticException
*/
private static void generateConstraintInfos(ASTNode child, List columnNames,
List cstrInfos, ASTNode typeChildForDefault,
final TokenRewriteStream tokenRewriteStream) throws SemanticException {
// The ANTLR grammar looks like :
// 1. KW_CONSTRAINT idfr=identifier KW_PRIMARY KW_KEY pkCols=columnParenthesesList
// constraintOptsCreate?
// -> ^(TOK_PRIMARY_KEY $pkCols $idfr constraintOptsCreate?)
// when the user specifies the constraint name.
// 2. KW_PRIMARY KW_KEY columnParenthesesList
// constraintOptsCreate?
// -> ^(TOK_PRIMARY_KEY columnParenthesesList constraintOptsCreate?)
// when the user does not specify the constraint name.
// Default values
String constraintName = null;
//by default if user hasn't provided any optional constraint properties
// it will be considered ENABLE and NOVALIDATE and RELY=false
boolean enable = true;
boolean validate = false;
boolean rely = false;
String checkOrDefaultValue = null;
for (int i = 0; i < child.getChildCount(); i++) {
ASTNode grandChild = (ASTNode) child.getChild(i);
int type = grandChild.getToken().getType();
if (type == HiveParser.TOK_CONSTRAINT_NAME) {
constraintName = unescapeIdentifier(grandChild.getChild(0).getText().toLowerCase());
} else if (type == HiveParser.TOK_ENABLE) {
enable = true;
// validate is false by default if we enable the constraint
// TODO: A constraint like NOT NULL could be enabled using ALTER but VALIDATE remains
// false in such cases. Ideally VALIDATE should be set to true to validate existing data
validate = false;
} else if (type == HiveParser.TOK_DISABLE) {
enable = false;
// validate is false by default if we disable the constraint
validate = false;
} else if (type == HiveParser.TOK_VALIDATE) {
validate = true;
} else if (type == HiveParser.TOK_NOVALIDATE) {
validate = false;
} else if (type == HiveParser.TOK_RELY) {
rely = true;
} else if( type == HiveParser.TOK_NORELY) {
rely = false;
} else if( child.getToken().getType() == HiveParser.TOK_DEFAULT_VALUE){
// try to get default value only if this is DEFAULT constraint
checkOrDefaultValue = getDefaultValue(grandChild, typeChildForDefault, tokenRewriteStream);
}
else if(child.getToken().getType() == HiveParser.TOK_CHECK_CONSTRAINT) {
checkOrDefaultValue = getCheckExpression(grandChild, tokenRewriteStream);
}
}
// metastore schema only allows maximum 255 for constraint name column
final int CONSTRAINT_MAX_LENGTH = 255;
if(constraintName != null && constraintName.length() > CONSTRAINT_MAX_LENGTH) {
throw new SemanticException(
ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("Constraint name: " + constraintName + " exceeded maximum allowed "
+ "length: " + CONSTRAINT_MAX_LENGTH ));
}
// metastore schema only allows maximum 255 for constraint value column
if(checkOrDefaultValue!= null && checkOrDefaultValue.length() > CONSTRAINT_MAX_LENGTH) {
throw new SemanticException(
ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("Constraint value: " + checkOrDefaultValue+ " exceeded maximum allowed "
+ "length: " + CONSTRAINT_MAX_LENGTH ));
}
// NOT NULL constraint could be enforced/enabled
if (enable && child.getToken().getType() != HiveParser.TOK_NOT_NULL
&& child.getToken().getType() != HiveParser.TOK_DEFAULT_VALUE
&& child.getToken().getType() != HiveParser.TOK_CHECK_CONSTRAINT) {
throw new SemanticException(
ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("ENABLE/ENFORCED feature not supported yet. "
+ "Please use DISABLE/NOT ENFORCED instead."));
}
if (validate) {
throw new SemanticException(
ErrorMsg.INVALID_CSTR_SYNTAX.getMsg("VALIDATE feature not supported yet. "
+ "Please use NOVALIDATE instead."));
}
if(columnNames == null) {
cstrInfos.add(new ConstraintInfo(null, constraintName,
enable, validate, rely, checkOrDefaultValue));
} else {
for (String columnName : columnNames) {
cstrInfos.add(new ConstraintInfo(columnName, constraintName,
enable, validate, rely, checkOrDefaultValue));
}
}
}
/**
* Process the foreign keys from the AST and populate the foreign keys in the SQLForeignKey list
* @param child Foreign Key token node
* @param foreignKeys SQLForeignKey list
* @throws SemanticException
*/
protected static void processForeignKeys(String databaseName, String tableName,
ASTNode child, List foreignKeys) throws SemanticException {
// The ANTLR grammar looks like :
// 1. KW_CONSTRAINT idfr=identifier KW_FOREIGN KW_KEY fkCols=columnParenthesesList
// KW_REFERENCES tabName=tableName parCols=columnParenthesesList
// enableSpec=enableSpecification validateSpec=validateSpecification relySpec=relySpecification
// -> ^(TOK_FOREIGN_KEY $idfr $fkCols $tabName $parCols $relySpec $enableSpec $validateSpec)
// when the user specifies the constraint name (i.e. child.getChildCount() == 7)
// 2. KW_FOREIGN KW_KEY fkCols=columnParenthesesList
// KW_REFERENCES tabName=tableName parCols=columnParenthesesList
// enableSpec=enableSpecification validateSpec=validateSpecification relySpec=relySpecification
// -> ^(TOK_FOREIGN_KEY $fkCols $tabName $parCols $relySpec $enableSpec $validateSpec)
// when the user does not specify the constraint name (i.e. child.getChildCount() == 6)
String constraintName = null;
boolean enable = true;
boolean validate = true;
boolean rely = false;
int fkIndex = -1;
for (int i = 0; i < child.getChildCount(); i++) {
ASTNode grandChild = (ASTNode) child.getChild(i);
int type = grandChild.getToken().getType();
if (type == HiveParser.TOK_CONSTRAINT_NAME) {
constraintName = unescapeIdentifier(grandChild.getChild(0).getText().toLowerCase());
} else if (type == HiveParser.TOK_ENABLE) {
enable = true;
// validate is true by default if we enable the constraint
validate = true;
} else if (type == HiveParser.TOK_DISABLE) {
enable = false;
// validate is false by default if we disable the constraint
validate = false;
} else if (type == HiveParser.TOK_VALIDATE) {
validate = true;
} else if (type == HiveParser.TOK_NOVALIDATE) {
validate = false;
} else if (type == HiveParser.TOK_RELY) {
rely = true;
} else if (type == HiveParser.TOK_TABCOLNAME && fkIndex == -1) {
fkIndex = i;
}
}
if (enable) {
throw new SemanticException(
ErrorMsg.INVALID_FK_SYNTAX.getMsg("ENABLE feature not supported yet. "
+ "Please use DISABLE instead."));
}
if (validate) {
throw new SemanticException(
ErrorMsg.INVALID_FK_SYNTAX.getMsg("VALIDATE feature not supported yet. "
+ "Please use NOVALIDATE instead."));
}
int ptIndex = fkIndex + 1;
int pkIndex = ptIndex + 1;
if (child.getChild(fkIndex).getChildCount() != child.getChild(pkIndex).getChildCount()) {
throw new SemanticException(ErrorMsg.INVALID_FK_SYNTAX.getMsg(
" The number of foreign key columns should be same as number of parent key columns "));
}
String[] parentDBTbl = getQualifiedTableName((ASTNode) child.getChild(ptIndex));
for (int j = 0; j < child.getChild(fkIndex).getChildCount(); j++) {
SQLForeignKey sqlForeignKey = new SQLForeignKey();
sqlForeignKey.setFktable_db(databaseName);
sqlForeignKey.setFktable_name(tableName);
Tree fkgrandChild = child.getChild(fkIndex).getChild(j);
checkColumnName(fkgrandChild.getText());
sqlForeignKey.setFkcolumn_name(unescapeIdentifier(fkgrandChild.getText().toLowerCase()));
sqlForeignKey.setPktable_db(parentDBTbl[0]);
sqlForeignKey.setPktable_name(parentDBTbl[1]);
Tree pkgrandChild = child.getChild(pkIndex).getChild(j);
sqlForeignKey.setPkcolumn_name(unescapeIdentifier(pkgrandChild.getText().toLowerCase()));
sqlForeignKey.setKey_seq(j+1);
sqlForeignKey.setFk_name(constraintName);
sqlForeignKey.setEnable_cstr(enable);
sqlForeignKey.setValidate_cstr(validate);
sqlForeignKey.setRely_cstr(rely);
foreignKeys.add(sqlForeignKey);
}
}
protected boolean hasEnabledOrValidatedConstraints(List notNullConstraints,
List defaultConstraints,
List checkConstraints){
if(notNullConstraints != null) {
for (SQLNotNullConstraint nnC : notNullConstraints) {
if (nnC.isEnable_cstr() || nnC.isValidate_cstr()) {
return true;
}
}
}
if(defaultConstraints!= null && !defaultConstraints.isEmpty()) {
return true;
}
if(checkConstraints!= null && !checkConstraints.isEmpty()) {
return true;
}
return false;
}
private static void checkColumnName(String columnName) throws SemanticException {
if (VirtualColumn.VIRTUAL_COLUMN_NAMES.contains(columnName.toUpperCase())) {
throw new SemanticException(ErrorMsg.INVALID_COLUMN_NAME.getMsg(columnName));
}
}
/**
* Get the list of FieldSchema out of the ASTNode.
* Additionally, populate the primaryKeys and foreignKeys if any.
*/
public static List getColumns(
ASTNode ast, boolean lowerCase, TokenRewriteStream tokenRewriteStream,
List primaryKeys, List foreignKeys,
List uniqueConstraints, List notNullConstraints,
List defaultConstraints, List checkConstraints,
Configuration conf) throws SemanticException {
List colList = new ArrayList();
Tree parent = ast.getParent();
for (int i = 0; i < ast.getChildCount(); i++) {
FieldSchema col = new FieldSchema();
ASTNode child = (ASTNode) ast.getChild(i);
switch (child.getToken().getType()) {
case HiveParser.TOK_UNIQUE: {
String[] qualifiedTabName = getQualifiedTableName((ASTNode) parent.getChild(0));
// TODO CAT - for now always use the default catalog. Eventually will want to see if
// the user specified a catalog
String catName = MetaStoreUtils.getDefaultCatalog(conf);
processUniqueConstraints(catName, qualifiedTabName[0], qualifiedTabName[1], child,
uniqueConstraints);
}
break;
case HiveParser.TOK_PRIMARY_KEY: {
if (!primaryKeys.isEmpty()) {
throw new SemanticException(ErrorMsg.INVALID_CONSTRAINT.getMsg(
"Cannot exist more than one primary key definition for the same table"));
}
String[] qualifiedTabName = getQualifiedTableName((ASTNode) parent.getChild(0));
processPrimaryKeys(qualifiedTabName[0], qualifiedTabName[1], child, primaryKeys);
}
break;
case HiveParser.TOK_FOREIGN_KEY: {
String[] qualifiedTabName = getQualifiedTableName((ASTNode) parent.getChild(0));
processForeignKeys(qualifiedTabName[0], qualifiedTabName[1], child, foreignKeys);
}
break;
case HiveParser.TOK_CHECK_CONSTRAINT: {
// TODO CAT - for now always use the default catalog. Eventually will want to see if
// the user specified a catalog
String catName = MetaStoreUtils.getDefaultCatalog(conf);
String[] qualifiedTabName = getQualifiedTableName((ASTNode) parent.getChild(0));
processCheckConstraints(catName, qualifiedTabName[0], qualifiedTabName[1], child, null,
checkConstraints, null, tokenRewriteStream);
}
break;
default:
Tree grandChild = child.getChild(0);
if (grandChild != null) {
String name = grandChild.getText();
if (lowerCase) {
name = name.toLowerCase();
}
checkColumnName(name);
// child 0 is the name of the column
col.setName(unescapeIdentifier(name));
// child 1 is the type of the column
ASTNode typeChild = (ASTNode) (child.getChild(1));
col.setType(getTypeStringFromAST(typeChild));
// child 2 is the optional comment of the column
// child 3 is the optional constraint
ASTNode constraintChild = null;
if (child.getChildCount() == 4) {
col.setComment(unescapeSQLString(child.getChild(2).getText()));
constraintChild = (ASTNode) child.getChild(3);
} else if (child.getChildCount() == 3
&& ((ASTNode) child.getChild(2)).getToken().getType() == HiveParser.StringLiteral) {
col.setComment(unescapeSQLString(child.getChild(2).getText()));
} else if (child.getChildCount() == 3) {
constraintChild = (ASTNode) child.getChild(2);
}
if (constraintChild != null) {
String[] qualifiedTabName = getQualifiedTableName((ASTNode) parent.getChild(0));
// TODO CAT - for now always use the default catalog. Eventually will want to see if
// the user specified a catalog
String catName = MetaStoreUtils.getDefaultCatalog(conf);
// Process column constraint
switch (constraintChild.getToken().getType()) {
case HiveParser.TOK_CHECK_CONSTRAINT:
processCheckConstraints(catName, qualifiedTabName[0], qualifiedTabName[1], constraintChild,
ImmutableList.of(col.getName()), checkConstraints, typeChild,
tokenRewriteStream);
break;
case HiveParser.TOK_DEFAULT_VALUE:
processDefaultConstraints(catName, qualifiedTabName[0], qualifiedTabName[1], constraintChild,
ImmutableList.of(col.getName()), defaultConstraints, typeChild, tokenRewriteStream);
break;
case HiveParser.TOK_NOT_NULL:
processNotNullConstraints(catName, qualifiedTabName[0], qualifiedTabName[1], constraintChild,
ImmutableList.of(col.getName()), notNullConstraints);
break;
case HiveParser.TOK_UNIQUE:
processUniqueConstraints(catName, qualifiedTabName[0], qualifiedTabName[1], constraintChild,
ImmutableList.of(col.getName()), uniqueConstraints);
break;
case HiveParser.TOK_PRIMARY_KEY:
if (!primaryKeys.isEmpty()) {
throw new SemanticException(ErrorMsg.INVALID_CONSTRAINT.getMsg(
"Cannot exist more than one primary key definition for the same table"));
}
processPrimaryKeys(qualifiedTabName[0], qualifiedTabName[1], constraintChild,
ImmutableList.of(col.getName()), primaryKeys);
break;
case HiveParser.TOK_FOREIGN_KEY:
processForeignKeys(qualifiedTabName[0], qualifiedTabName[1], constraintChild,
foreignKeys);
break;
default:
throw new SemanticException(ErrorMsg.NOT_RECOGNIZED_CONSTRAINT.getMsg(
constraintChild.getToken().getText()));
}
}
}
colList.add(col);
break;
}
}
return colList;
}
public static List getColumnNames(ASTNode ast) {
List colList = new ArrayList();
int numCh = ast.getChildCount();
for (int i = 0; i < numCh; i++) {
ASTNode child = (ASTNode) ast.getChild(i);
colList.add(unescapeIdentifier(child.getText()).toLowerCase());
}
return colList;
}
protected List getColumnNamesOrder(ASTNode ast) throws SemanticException {
List colList = new ArrayList();
int numCh = ast.getChildCount();
for (int i = 0; i < numCh; i++) {
ASTNode child = (ASTNode) ast.getChild(i);
if (child.getToken().getType() == HiveParser.TOK_TABSORTCOLNAMEASC) {
child = (ASTNode) child.getChild(0);
if (child.getToken().getType() == HiveParser.TOK_NULLS_FIRST) {
colList.add(new Order(unescapeIdentifier(child.getChild(0).getText()).toLowerCase(),
HIVE_COLUMN_ORDER_ASC));
} else {
throw new SemanticException("create/alter table: "
+ "not supported NULLS LAST for ORDER BY in ASC order");
}
} else {
child = (ASTNode) child.getChild(0);
if (child.getToken().getType() == HiveParser.TOK_NULLS_LAST) {
colList.add(new Order(unescapeIdentifier(child.getChild(0).getText()).toLowerCase(),
HIVE_COLUMN_ORDER_DESC));
} else {
throw new SemanticException("create/alter table: "
+ "not supported NULLS FIRST for ORDER BY in DESC order");
}
}
}
return colList;
}
protected static String getTypeStringFromAST(ASTNode typeNode)
throws SemanticException {
switch (typeNode.getType()) {
case HiveParser.TOK_LIST:
return serdeConstants.LIST_TYPE_NAME + "<"
+ getTypeStringFromAST((ASTNode) typeNode.getChild(0)) + ">";
case HiveParser.TOK_MAP:
return serdeConstants.MAP_TYPE_NAME + "<"
+ getTypeStringFromAST((ASTNode) typeNode.getChild(0)) + ","
+ getTypeStringFromAST((ASTNode) typeNode.getChild(1)) + ">";
case HiveParser.TOK_STRUCT:
return getStructTypeStringFromAST(typeNode);
case HiveParser.TOK_UNIONTYPE:
return getUnionTypeStringFromAST(typeNode);
default:
return DDLSemanticAnalyzer.getTypeName(typeNode);
}
}
private static String getStructTypeStringFromAST(ASTNode typeNode)
throws SemanticException {
String typeStr = serdeConstants.STRUCT_TYPE_NAME + "<";
typeNode = (ASTNode) typeNode.getChild(0);
int children = typeNode.getChildCount();
if (children <= 0) {
throw new SemanticException("empty struct not allowed.");
}
StringBuilder buffer = new StringBuilder(typeStr);
for (int i = 0; i < children; i++) {
ASTNode child = (ASTNode) typeNode.getChild(i);
buffer.append(unescapeIdentifier(child.getChild(0).getText())).append(":");
buffer.append(getTypeStringFromAST((ASTNode) child.getChild(1)));
if (i < children - 1) {
buffer.append(",");
}
}
buffer.append(">");
return buffer.toString();
}
private static String getUnionTypeStringFromAST(ASTNode typeNode)
throws SemanticException {
String typeStr = serdeConstants.UNION_TYPE_NAME + "<";
typeNode = (ASTNode) typeNode.getChild(0);
int children = typeNode.getChildCount();
if (children <= 0) {
throw new SemanticException("empty union not allowed.");
}
StringBuilder buffer = new StringBuilder(typeStr);
for (int i = 0; i < children; i++) {
buffer.append(getTypeStringFromAST((ASTNode) typeNode.getChild(i)));
if (i < children - 1) {
buffer.append(",");
}
}
buffer.append(">");
typeStr = buffer.toString();
return typeStr;
}
/**
* TableSpec.
*
*/
public static class TableSpec {
public String tableName;
public Table tableHandle;
public Map partSpec; // has to use LinkedHashMap to enforce order
public Partition partHandle;
public int numDynParts; // number of dynamic partition columns
public List partitions; // involved partitions in TableScanOperator/FileSinkOperator
public static enum SpecType {TABLE_ONLY, STATIC_PARTITION, DYNAMIC_PARTITION};
public SpecType specType;
public TableSpec(Hive db, HiveConf conf, ASTNode ast)
throws SemanticException {
this(db, conf, ast, true, false);
}
public TableSpec(Table table) {
tableHandle = table;
tableName = table.getDbName() + "." + table.getTableName();
specType = SpecType.TABLE_ONLY;
}
public TableSpec(Hive db, String tableName, Map partSpec)
throws HiveException {
this(db, tableName, partSpec, false);
}
public TableSpec(Hive db, String tableName, Map partSpec, boolean allowPartialPartitionsSpec)
throws HiveException {
Table table = db.getTable(tableName);
tableHandle = table;
this.tableName = table.getDbName() + "." + table.getTableName();
if (partSpec == null) {
specType = SpecType.TABLE_ONLY;
} else if(allowPartialPartitionsSpec) {
partitions = db.getPartitions(table, partSpec);
specType = SpecType.STATIC_PARTITION;
} else {
Partition partition = db.getPartition(table, partSpec, false);
if (partition == null) {
throw new SemanticException("partition is unknown: " + table + "/" + partSpec);
}
partHandle = partition;
partitions = Collections.singletonList(partHandle);
specType = SpecType.STATIC_PARTITION;
}
}
public TableSpec(Table tableHandle, List partitions)
throws HiveException {
this.tableHandle = tableHandle;
this.tableName = tableHandle.getTableName();
if (partitions != null && !partitions.isEmpty()) {
this.specType = SpecType.STATIC_PARTITION;
this.partitions = partitions;
List partCols = this.tableHandle.getPartCols();
this.partSpec = new LinkedHashMap<>();
for (FieldSchema partCol : partCols) {
partSpec.put(partCol.getName(), null);
}
} else {
this.specType = SpecType.TABLE_ONLY;
}
}
private boolean createDynPartSpec(ASTNode ast) {
if(ast.getToken().getType() != HiveParser.TOK_CREATETABLE &&
ast.getToken().getType() != HiveParser.TOK_CREATE_MATERIALIZED_VIEW &&
ast.getToken().getType() != HiveParser.TOK_ALTER_MATERIALIZED_VIEW &&
tableHandle.getPartitionKeys().size() > 0
&& (ast.getParent() != null && (ast.getParent().getType() == HiveParser.TOK_INSERT_INTO
|| ast.getParent().getType() == HiveParser.TOK_INSERT)
|| ast.getParent().getType() == HiveParser.TOK_DESTINATION
|| ast.getParent().getType() == HiveParser.TOK_ANALYZE)) {
return true;
}
return false;
}
public TableSpec(Hive db, HiveConf conf, ASTNode ast, boolean allowDynamicPartitionsSpec,
boolean allowPartialPartitionsSpec) throws SemanticException {
assert (ast.getToken().getType() == HiveParser.TOK_TAB
|| ast.getToken().getType() == HiveParser.TOK_TABLE_PARTITION
|| ast.getToken().getType() == HiveParser.TOK_TABTYPE
|| ast.getToken().getType() == HiveParser.TOK_CREATETABLE
|| ast.getToken().getType() == HiveParser.TOK_CREATE_MATERIALIZED_VIEW);
int childIndex = 0;
numDynParts = 0;
try {
// get table metadata
tableName = getUnescapedName((ASTNode)ast.getChild(0));
boolean testMode = conf.getBoolVar(HiveConf.ConfVars.HIVETESTMODE);
if (testMode) {
tableName = conf.getVar(HiveConf.ConfVars.HIVETESTMODEPREFIX)
+ tableName;
}
if (ast.getToken().getType() != HiveParser.TOK_CREATETABLE &&
ast.getToken().getType() != HiveParser.TOK_CREATE_MATERIALIZED_VIEW &&
ast.getToken().getType() != HiveParser.TOK_ALTER_MATERIALIZED_VIEW) {
tableHandle = db.getTable(tableName);
}
} catch (InvalidTableException ite) {
throw new SemanticException(ErrorMsg.INVALID_TABLE.getMsg(ast
.getChild(0)), ite);
} catch (HiveException e) {
throw new SemanticException(ErrorMsg.CANNOT_RETRIEVE_TABLE_METADATA.getMsg(ast
.getChild(childIndex), e.getMessage()), e);
}
// get partition metadata if partition specified
if (ast.getChildCount() == 2 && ast.getToken().getType() != HiveParser.TOK_CREATETABLE &&
ast.getToken().getType() != HiveParser.TOK_CREATE_MATERIALIZED_VIEW &&
ast.getToken().getType() != HiveParser.TOK_ALTER_MATERIALIZED_VIEW) {
childIndex = 1;
ASTNode partspec = (ASTNode) ast.getChild(1);
partitions = new ArrayList();
// partSpec is a mapping from partition column name to its value.
Map tmpPartSpec = new HashMap(partspec.getChildCount());
for (int i = 0; i < partspec.getChildCount(); ++i) {
ASTNode partspec_val = (ASTNode) partspec.getChild(i);
String val = null;
String colName = unescapeIdentifier(partspec_val.getChild(0).getText().toLowerCase());
if (partspec_val.getChildCount() < 2) { // DP in the form of T partition (ds, hr)
if (allowDynamicPartitionsSpec) {
++numDynParts;
} else {
throw new SemanticException(ErrorMsg.INVALID_PARTITION
.getMsg(" - Dynamic partitions not allowed"));
}
} else { // in the form of T partition (ds="2010-03-03")
val = stripQuotes(partspec_val.getChild(1).getText());
}
tmpPartSpec.put(colName, val);
}
// check if the columns, as well as value types in the partition() clause are valid
validatePartSpec(tableHandle, tmpPartSpec, ast, conf, false);
List parts = tableHandle.getPartitionKeys();
partSpec = new LinkedHashMap(partspec.getChildCount());
for (FieldSchema fs : parts) {
String partKey = fs.getName();
partSpec.put(partKey, tmpPartSpec.get(partKey));
}
// check if the partition spec is valid
if (numDynParts > 0) {
int numStaPart = parts.size() - numDynParts;
if (numStaPart == 0 &&
conf.getVar(HiveConf.ConfVars.DYNAMICPARTITIONINGMODE).equalsIgnoreCase("strict")) {
throw new SemanticException(ErrorMsg.DYNAMIC_PARTITION_STRICT_MODE.getMsg());
}
// check the partitions in partSpec be the same as defined in table schema
if (partSpec.keySet().size() != parts.size()) {
ErrorPartSpec(partSpec, parts);
}
Iterator itrPsKeys = partSpec.keySet().iterator();
for (FieldSchema fs: parts) {
if (!itrPsKeys.next().toLowerCase().equals(fs.getName().toLowerCase())) {
ErrorPartSpec(partSpec, parts);
}
}
// check if static partition appear after dynamic partitions
for (FieldSchema fs: parts) {
if (partSpec.get(fs.getName().toLowerCase()) == null) {
if (numStaPart > 0) { // found a DP, but there exists ST as subpartition
throw new SemanticException(
ErrorMsg.PARTITION_DYN_STA_ORDER.getMsg(ast.getChild(childIndex)));
}
break;
} else {
--numStaPart;
}
}
partHandle = null;
specType = SpecType.DYNAMIC_PARTITION;
} else {
try {
if (allowPartialPartitionsSpec) {
partitions = db.getPartitions(tableHandle, partSpec);
} else {
// this doesn't create partition.
partHandle = db.getPartition(tableHandle, partSpec, false);
if (partHandle == null) {
// if partSpec doesn't exists in DB, return a delegate one
// and the actual partition is created in MoveTask
partHandle = new Partition(tableHandle, partSpec, null);
} else {
partitions.add(partHandle);
}
}
} catch (HiveException e) {
throw new SemanticException(
ErrorMsg.INVALID_PARTITION.getMsg(ast.getChild(childIndex)), e);
}
specType = SpecType.STATIC_PARTITION;
}
} else if(createDynPartSpec(ast) && allowDynamicPartitionsSpec) {
// if user hasn't specify partition spec generate it from table's partition spec
// do this only if it is INSERT/INSERT INTO/INSERT OVERWRITE/ANALYZE
List parts = tableHandle.getPartitionKeys();
partSpec = new LinkedHashMap(parts.size());
for (FieldSchema fs : parts) {
String partKey = fs.getName();
partSpec.put(partKey, null);
}
partHandle = null;
specType = SpecType.DYNAMIC_PARTITION;
} else {
specType = SpecType.TABLE_ONLY;
}
}
public Map getPartSpec() {
return this.partSpec;
}
public void setPartSpec(Map partSpec) {
this.partSpec = partSpec;
}
@Override
public String toString() {
if (partHandle != null) {
return partHandle.toString();
} else {
return tableHandle.toString();
}
}
}
public class AnalyzeRewriteContext {
private String tableName;
private List colName;
private List colType;
private boolean tblLvl;
public String getTableName() {
return tableName;
}
public void setTableName(String tableName) {
this.tableName = tableName;
}
public List getColName() {
return colName;
}
public void setColName(List colName) {
this.colName = colName;
}
public boolean isTblLvl() {
return tblLvl;
}
public void setTblLvl(boolean isTblLvl) {
this.tblLvl = isTblLvl;
}
public List getColType() {
return colType;
}
public void setColType(List colType) {
this.colType = colType;
}
}
/**
* Gets the lineage information.
*
* @return LineageInfo associated with the query.
*/
public LineageInfo getLineageInfo() {
return linfo;
}
/**
* Sets the lineage information.
*
* @param linfo The LineageInfo structure that is set in the optimization phase.
*/
public void setLineageInfo(LineageInfo linfo) {
this.linfo = linfo;
}
/**
* Gets the table access information.
*
* @return TableAccessInfo associated with the query.
*/
public TableAccessInfo getTableAccessInfo() {
return tableAccessInfo;
}
/**
* Sets the table access information.
*
* @param tableAccessInfo The TableAccessInfo structure that is set in the optimization phase.
*/
public void setTableAccessInfo(TableAccessInfo tableAccessInfo) {
this.tableAccessInfo = tableAccessInfo;
}
/**
* Gets the column access information.
*
* @return ColumnAccessInfo associated with the query.
*/
public ColumnAccessInfo getColumnAccessInfo() {
return columnAccessInfo;
}
/**
* Sets the column access information.
*
* @param columnAccessInfo The ColumnAccessInfo structure that is set immediately after
* the optimization phase.
*/
public void setColumnAccessInfo(ColumnAccessInfo columnAccessInfo) {
this.columnAccessInfo = columnAccessInfo;
}
public ColumnAccessInfo getUpdateColumnAccessInfo() {
return updateColumnAccessInfo;
}
public void setUpdateColumnAccessInfo(ColumnAccessInfo updateColumnAccessInfo) {
this.updateColumnAccessInfo = updateColumnAccessInfo;
}
/**
* Checks if given specification is proper specification for prefix of
* partition cols, for table partitioned by ds, hr, min valid ones are
* (ds='2008-04-08'), (ds='2008-04-08', hr='12'), (ds='2008-04-08', hr='12', min='30')
* invalid one is for example (ds='2008-04-08', min='30')
* @param spec specification key-value map
* @return true if the specification is prefix; never returns false, but throws
* @throws HiveException
*/
public final boolean isValidPrefixSpec(Table tTable, Map spec)
throws HiveException {
// TODO - types need to be checked.
List partCols = tTable.getPartitionKeys();
if (partCols == null || (partCols.size() == 0)) {
if (spec != null) {
throw new HiveException(
"table is not partitioned but partition spec exists: "
+ spec);
} else {
return true;
}
}
if (spec == null) {
throw new HiveException("partition spec is not specified");
}
Iterator itrPsKeys = spec.keySet().iterator();
for (FieldSchema fs: partCols) {
if(!itrPsKeys.hasNext()) {
break;
}
if (!itrPsKeys.next().toLowerCase().equals(
fs.getName().toLowerCase())) {
ErrorPartSpec(spec, partCols);
}
}
if(itrPsKeys.hasNext()) {
ErrorPartSpec(spec, partCols);
}
return true;
}
private static void ErrorPartSpec(Map partSpec,
List parts) throws SemanticException {
StringBuilder sb =
new StringBuilder(
"Partition columns in the table schema are: (");
for (FieldSchema fs : parts) {
sb.append(fs.getName()).append(", ");
}
sb.setLength(sb.length() - 2); // remove the last ", "
sb.append("), while the partitions specified in the query are: (");
Iterator itrPsKeys = partSpec.keySet().iterator();
while (itrPsKeys.hasNext()) {
sb.append(itrPsKeys.next()).append(", ");
}
sb.setLength(sb.length() - 2); // remove the last ", "
sb.append(").");
throw new SemanticException(ErrorMsg.PARTSPEC_DIFFER_FROM_SCHEMA
.getMsg(sb.toString()));
}
public Hive getDb() {
return db;
}
public QueryProperties getQueryProperties() {
return queryProperties;
}
public Set getAcidFileSinks() {
return acidFileSinks;
}
public boolean hasTransactionalInQuery() {
return transactionalInQuery;
}
/**
* Construct list bucketing context.
*
* @param skewedColNames
* @param skewedValues
* @param skewedColValueLocationMaps
* @param isStoredAsSubDirectories
* @return
*/
protected ListBucketingCtx constructListBucketingCtx(List skewedColNames,
List> skewedValues, Map, String> skewedColValueLocationMaps,
boolean isStoredAsSubDirectories, HiveConf conf) {
ListBucketingCtx lbCtx = new ListBucketingCtx();
lbCtx.setSkewedColNames(skewedColNames);
lbCtx.setSkewedColValues(skewedValues);
lbCtx.setLbLocationMap(skewedColValueLocationMaps);
lbCtx.setStoredAsSubDirectories(isStoredAsSubDirectories);
lbCtx.setDefaultKey(ListBucketingPrunerUtils.HIVE_LIST_BUCKETING_DEFAULT_KEY);
lbCtx.setDefaultDirName(ListBucketingPrunerUtils.HIVE_LIST_BUCKETING_DEFAULT_DIR_NAME);
return lbCtx;
}
/**
* Given a ASTNode, return list of values.
*
* use case:
* create table xyz list bucketed (col1) with skew (1,2,5)
* AST Node is for (1,2,5)
* @param ast
* @return
*/
protected List getSkewedValueFromASTNode(ASTNode ast) {
List colList = new ArrayList();
int numCh = ast.getChildCount();
for (int i = 0; i < numCh; i++) {
ASTNode child = (ASTNode) ast.getChild(i);
colList.add(stripQuotes(child.getText()).toLowerCase());
}
return colList;
}
/**
* Retrieve skewed values from ASTNode.
*
* @param node
* @return
* @throws SemanticException
*/
protected List getSkewedValuesFromASTNode(Node node) throws SemanticException {
List result = null;
Tree leafVNode = ((ASTNode) node).getChild(0);
if (leafVNode == null) {
throw new SemanticException(
ErrorMsg.SKEWED_TABLE_NO_COLUMN_VALUE.getMsg());
} else {
ASTNode lVAstNode = (ASTNode) leafVNode;
if (lVAstNode.getToken().getType() != HiveParser.TOK_TABCOLVALUE) {
throw new SemanticException(
ErrorMsg.SKEWED_TABLE_NO_COLUMN_VALUE.getMsg());
} else {
result = new ArrayList(getSkewedValueFromASTNode(lVAstNode));
}
}
return result;
}
/**
* Analyze list bucket column names
*
* @param skewedColNames
* @param child
* @return
* @throws SemanticException
*/
protected List analyzeSkewedTablDDLColNames(List skewedColNames, ASTNode child)
throws SemanticException {
Tree nNode = child.getChild(0);
if (nNode == null) {
throw new SemanticException(ErrorMsg.SKEWED_TABLE_NO_COLUMN_NAME.getMsg());
} else {
ASTNode nAstNode = (ASTNode) nNode;
if (nAstNode.getToken().getType() != HiveParser.TOK_TABCOLNAME) {
throw new SemanticException(ErrorMsg.SKEWED_TABLE_NO_COLUMN_NAME.getMsg());
} else {
skewedColNames = getColumnNames(nAstNode);
}
}
return skewedColNames;
}
/**
* Handle skewed values in DDL.
*
* It can be used by both skewed by ... on () and set skewed location ().
*
* @param skewedValues
* @param child
* @throws SemanticException
*/
protected void analyzeDDLSkewedValues(List> skewedValues, ASTNode child)
throws SemanticException {
Tree vNode = child.getChild(1);
if (vNode == null) {
throw new SemanticException(ErrorMsg.SKEWED_TABLE_NO_COLUMN_VALUE.getMsg());
}
ASTNode vAstNode = (ASTNode) vNode;
switch (vAstNode.getToken().getType()) {
case HiveParser.TOK_TABCOLVALUE:
for (String str : getSkewedValueFromASTNode(vAstNode)) {
List sList = new ArrayList(Arrays.asList(str));
skewedValues.add(sList);
}
break;
case HiveParser.TOK_TABCOLVALUE_PAIR:
ArrayList vLNodes = vAstNode.getChildren();
for (Node node : vLNodes) {
if ( ((ASTNode) node).getToken().getType() != HiveParser.TOK_TABCOLVALUES) {
throw new SemanticException(
ErrorMsg.SKEWED_TABLE_NO_COLUMN_VALUE.getMsg());
} else {
skewedValues.add(getSkewedValuesFromASTNode(node));
}
}
break;
default:
break;
}
}
/**
* process stored as directories
*
* @param child
* @return
*/
protected boolean analyzeStoredAdDirs(ASTNode child) {
boolean storedAsDirs = false;
if ((child.getChildCount() == 3)
&& (((ASTNode) child.getChild(2)).getToken().getType()
== HiveParser.TOK_STOREDASDIRS)) {
storedAsDirs = true;
}
return storedAsDirs;
}
private static boolean getPartExprNodeDesc(ASTNode astNode, HiveConf conf,
Map astExprNodeMap) throws SemanticException {
if (astNode == null) {
return true;
} else if ((astNode.getChildren() == null) || (astNode.getChildren().size() == 0)) {
return astNode.getType() != HiveParser.TOK_PARTVAL;
}
TypeCheckCtx typeCheckCtx = new TypeCheckCtx(null);
String defaultPartitionName = HiveConf.getVar(conf, HiveConf.ConfVars.DEFAULTPARTITIONNAME);
boolean result = true;
for (Node childNode : astNode.getChildren()) {
ASTNode childASTNode = (ASTNode)childNode;
if (childASTNode.getType() != HiveParser.TOK_PARTVAL) {
result = getPartExprNodeDesc(childASTNode, conf, astExprNodeMap) && result;
} else {
boolean isDynamicPart = childASTNode.getChildren().size() <= 1;
result = !isDynamicPart && result;
if (!isDynamicPart) {
ASTNode partVal = (ASTNode)childASTNode.getChildren().get(1);
if (!defaultPartitionName.equalsIgnoreCase(unescapeSQLString(partVal.getText()))) {
astExprNodeMap.put((ASTNode)childASTNode.getChildren().get(0),
TypeCheckProcFactory.genExprNode(partVal, typeCheckCtx).get(partVal));
}
}
}
}
return result;
}
public static void validatePartSpec(Table tbl, Map partSpec,
ASTNode astNode, HiveConf conf, boolean shouldBeFull) throws SemanticException {
tbl.validatePartColumnNames(partSpec, shouldBeFull);
validatePartColumnType(tbl, partSpec, astNode, conf);
}
public static void validatePartColumnType(Table tbl, Map partSpec,
ASTNode astNode, HiveConf conf) throws SemanticException {
if (!HiveConf.getBoolVar(conf, HiveConf.ConfVars.HIVE_TYPE_CHECK_ON_INSERT)) {
return;
}
Map astExprNodeMap = new HashMap();
if (!getPartExprNodeDesc(astNode, conf, astExprNodeMap)) {
STATIC_LOG.warn("Dynamic partitioning is used; only validating "
+ astExprNodeMap.size() + " columns");
}
if (astExprNodeMap.isEmpty()) {
return; // All columns are dynamic, nothing to do.
}
List parts = tbl.getPartitionKeys();
Map partCols = new HashMap(parts.size());
for (FieldSchema col : parts) {
partCols.put(col.getName(), col.getType().toLowerCase());
}
for (Entry astExprNodePair : astExprNodeMap.entrySet()) {
String astKeyName = astExprNodePair.getKey().toString().toLowerCase();
if (astExprNodePair.getKey().getType() == HiveParser.Identifier) {
astKeyName = stripIdentifierQuotes(astKeyName);
}
String colType = partCols.get(astKeyName);
ObjectInspector inputOI = TypeInfoUtils.getStandardJavaObjectInspectorFromTypeInfo
(astExprNodePair.getValue().getTypeInfo());
TypeInfo expectedType =
TypeInfoUtils.getTypeInfoFromTypeString(colType);
ObjectInspector outputOI =
TypeInfoUtils.getStandardJavaObjectInspectorFromTypeInfo(expectedType);
// Since partVal is a constant, it is safe to cast ExprNodeDesc to ExprNodeConstantDesc.
// Its value should be in normalized format (e.g. no leading zero in integer, date is in
// format of YYYY-MM-DD etc)
Object value = ((ExprNodeConstantDesc)astExprNodePair.getValue()).getValue();
Object convertedValue = value;
if (!inputOI.getTypeName().equals(outputOI.getTypeName())) {
convertedValue = ObjectInspectorConverters.getConverter(inputOI, outputOI).convert(value);
if (convertedValue == null) {
throw new SemanticException(ErrorMsg.PARTITION_SPEC_TYPE_MISMATCH, astKeyName,
inputOI.getTypeName(), outputOI.getTypeName());
}
if (!convertedValue.toString().equals(value.toString())) {
// value might have been changed because of the normalization in conversion
STATIC_LOG.warn("Partition " + astKeyName + " expects type " + outputOI.getTypeName()
+ " but input value is in type " + inputOI.getTypeName() + ". Convert "
+ value.toString() + " to " + convertedValue.toString());
}
}
if (!convertedValue.toString().equals(partSpec.get(astKeyName))) {
STATIC_LOG.warn("Partition Spec " + astKeyName + "=" + partSpec.get(astKeyName)
+ " has been changed to " + astKeyName + "=" + convertedValue.toString());
}
partSpec.put(astKeyName, convertedValue.toString());
}
}
@VisibleForTesting
static void normalizeColSpec(Map partSpec, String colName,
String colType, String originalColSpec, Object colValue) throws SemanticException {
if (colValue == null) {
return; // nothing to do with nulls
}
String normalizedColSpec = originalColSpec;
if (colType.equals(serdeConstants.DATE_TYPE_NAME)) {
normalizedColSpec = normalizeDateCol(colValue, originalColSpec);
}
if (!normalizedColSpec.equals(originalColSpec)) {
STATIC_LOG.warn("Normalizing partition spec - " + colName + " from "
+ originalColSpec + " to " + normalizedColSpec);
partSpec.put(colName, normalizedColSpec);
}
}
private static String normalizeDateCol(
Object colValue, String originalColSpec) throws SemanticException {
Date value;
if (colValue instanceof DateWritable) {
value = ((DateWritable) colValue).get(false); // Time doesn't matter.
} else if (colValue instanceof Date) {
value = (Date) colValue;
} else {
throw new SemanticException("Unexpected date type " + colValue.getClass());
}
return MetaStoreUtils.PARTITION_DATE_FORMAT.get().format(value);
}
protected WriteEntity toWriteEntity(String location) throws SemanticException {
return toWriteEntity(new Path(location));
}
protected WriteEntity toWriteEntity(Path location) throws SemanticException {
return toWriteEntity(location,conf);
}
public static WriteEntity toWriteEntity(Path location, HiveConf conf) throws SemanticException {
try {
Path path = tryQualifyPath(location,conf);
return new WriteEntity(path, FileUtils.isLocalFile(conf, path.toUri()));
} catch (Exception e) {
throw new SemanticException(e);
}
}
protected ReadEntity toReadEntity(String location) throws SemanticException {
return toReadEntity(new Path(location));
}
protected ReadEntity toReadEntity(Path location) throws SemanticException {
return toReadEntity(location, conf);
}
public static ReadEntity toReadEntity(Path location, HiveConf conf) throws SemanticException {
try {
Path path = tryQualifyPath(location, conf);
return new ReadEntity(path, FileUtils.isLocalFile(conf, path.toUri()));
} catch (Exception e) {
throw new SemanticException(e);
}
}
private Path tryQualifyPath(Path path) throws IOException {
return tryQualifyPath(path,conf);
}
public static Path tryQualifyPath(Path path, HiveConf conf) throws IOException {
try {
return path.getFileSystem(conf).makeQualified(path);
} catch (IOException e) {
return path; // some tests expected to pass invalid schema
}
}
protected Database getDatabase(String dbName) throws SemanticException {
return getDatabase(dbName, true);
}
protected Database getDatabase(String dbName, boolean throwException) throws SemanticException {
Database database;
try {
database = db.getDatabase(dbName);
} catch (Exception e) {
throw new SemanticException(e.getMessage(), e);
}
if (database == null && throwException) {
throw new SemanticException(ErrorMsg.DATABASE_NOT_EXISTS.getMsg(dbName));
}
return database;
}
protected Table getTable(String[] qualified) throws SemanticException {
return getTable(qualified[0], qualified[1], true);
}
protected Table getTable(String[] qualified, boolean throwException) throws SemanticException {
return getTable(qualified[0], qualified[1], throwException);
}
protected Table getTable(String tblName) throws SemanticException {
return getTable(null, tblName, true);
}
protected Table getTable(String tblName, boolean throwException) throws SemanticException {
return getTable(null, tblName, throwException);
}
protected Table getTable(String database, String tblName, boolean throwException)
throws SemanticException {
Table tab;
try {
tab = database == null ? db.getTable(tblName, false)
: db.getTable(database, tblName, false);
}
catch (InvalidTableException e) {
throw new SemanticException(ErrorMsg.INVALID_TABLE.getMsg(tblName), e);
}
catch (Exception e) {
throw new SemanticException(e.getMessage(), e);
}
if (tab == null && throwException) {
throw new SemanticException(ErrorMsg.INVALID_TABLE.getMsg(tblName));
}
return tab;
}
protected Partition getPartition(Table table, Map partSpec,
boolean throwException) throws SemanticException {
Partition partition;
try {
partition = db.getPartition(table, partSpec, false);
} catch (Exception e) {
throw new SemanticException(toMessage(ErrorMsg.INVALID_PARTITION, partSpec), e);
}
if (partition == null && throwException) {
throw new SemanticException(toMessage(ErrorMsg.INVALID_PARTITION, partSpec));
}
return partition;
}
protected List getPartitions(Table table, Map partSpec,
boolean throwException) throws SemanticException {
List partitions;
try {
partitions = partSpec == null ? db.getPartitions(table) :
db.getPartitions(table, partSpec);
} catch (Exception e) {
throw new SemanticException(toMessage(ErrorMsg.INVALID_PARTITION, partSpec), e);
}
if (partitions.isEmpty() && throwException) {
throw new SemanticException(toMessage(ErrorMsg.INVALID_PARTITION, partSpec));
}
return partitions;
}
protected String toMessage(ErrorMsg message, Object detail) {
return detail == null ? message.getMsg() : message.getMsg(detail.toString());
}
public List> getAllRootTasks() {
return rootTasks;
}
public HashSet getAllInputs() {
return inputs;
}
public HashSet getAllOutputs() {
return outputs;
}
public QueryState getQueryState() {
return queryState;
}
/**
* Create a FetchTask for a given schema.
*
* @param schema string
*/
protected FetchTask createFetchTask(String schema) {
Properties prop = new Properties();
// Sets delimiter to tab (ascii 9)
prop.setProperty(serdeConstants.SERIALIZATION_FORMAT, Integer.toString(Utilities.tabCode));
prop.setProperty(serdeConstants.SERIALIZATION_NULL_FORMAT, " ");
String[] colTypes = schema.split("#");
prop.setProperty("columns", colTypes[0]);
prop.setProperty("columns.types", colTypes[1]);
prop.setProperty(serdeConstants.SERIALIZATION_LIB, LazySimpleSerDe.class.getName());
FetchWork fetch =
new FetchWork(ctx.getResFile(), new TableDesc(TextInputFormat.class,
IgnoreKeyTextOutputFormat.class, prop), -1);
fetch.setSerializationNullFormat(" ");
return (FetchTask) TaskFactory.get(fetch);
}
protected HiveTxnManager getTxnMgr() {
if (txnManager != null) {
return txnManager;
}
return SessionState.get().getTxnMgr();
}
public CacheUsage getCacheUsage() {
return cacheUsage;
}
public void setCacheUsage(CacheUsage cacheUsage) {
this.cacheUsage = cacheUsage;
}
public DDLDescWithWriteId getAcidDdlDesc() {
return null;
}
}
