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net.snowflake.client.jdbc.SnowflakeDatabaseMetaData Maven / Gradle / Ivy
/*
* Copyright (c) 2012-2017 Snowflake Computing Inc. All rights reserved.
*/
package net.snowflake.client.jdbc;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import net.snowflake.common.core.SqlState;
import net.snowflake.client.core.SFSession;
import org.apache.commons.lang3.StringUtils;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.sql.RowIdLifetime;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.sql.Statement;
import java.sql.Types;
import java.util.List;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import java.util.regex.Pattern;
import net.snowflake.common.util.Wildcard;
import net.snowflake.common.core.SqlState;
import net.snowflake.client.log.SFLogger;
import net.snowflake.client.log.SFLoggerFactory;
import static net.snowflake.client.jdbc.DBMetadataResultSetMetadata.*;
/**
*
* @author jhuang
*/
public class SnowflakeDatabaseMetaData implements DatabaseMetaData
{
static final SFLogger logger = SFLoggerFactory.getLogger(SnowflakeDatabaseMetaData.class);
static final ObjectMapper mapper = new ObjectMapper();
static final private String DatabaseProductName = "Snowflake";
static final private String DriverName = "Snowflake";
static final private char SEARCH_STRING_ESCAPE = '\\';
static final private String JDBCVersion = "1.0";
// Open Group CLI Functions
// LOG10 is not supported
static final private String NumericFunctionsSupported = "ABS,ACOS,ASIN,"
+ "CEILING,COS,COT,DEGREES,EXP,FLOOR,LOG,MOD,PI,POWER,RADIANS,RAND,"
+ "ROUND,SIGN,SQRT,TAN,TRUNCATE";
// DIFFERENCE and SOUNDEX are not supported
static final private String StringFunctionsSupported = "ASCII,CHAR,"
+ "CONCAT,INSERT,LCASE,LEFT,LENGTH,LOCATE,LTRIM,REPEAT,REPLACE,"
+ "RIGHT,RTRIM,SPACE,SUBSTRING,UCASE";
static final private String DateAndTimeFunctionsSupported = "CURDATE," +
"CURTIME,DAYNAME,DAYOFMONTH,DAYOFWEEK,DAYOFYEAR,HOUR,MINUTE,MONTH," +
"MONTHNAME,NOW,QUARTER,SECOND,TIMESTAMPADD,TIMESTAMPDIFF,WEEK,YEAR";
static final private String SystemFunctionsSupported = "DATABASE,IFNULL,USER";
// These are keywords not in SQL2003 standard
static final private String notSQL2003Keywords = "ACCOUNT,DATABASE,SCHEMA,VIEW,ISSUE,DATE_PART,EXTRACT," +
"POSITION,TRY_CAST,BIT,DATETIME,NUMBERC,OBJECT,BYTEINT,STRING,TEXT," +
"TIMESTAMPLTZ,TIMESTAMPNTZ,TIMESTAMPTZ,TIMESTAMP_LTZ,TIMESTAMP_NTZ,TIMESTAMP_TZ,TINYINT," +
"VARBINARY,VARIANT,ACCOUNTS,ACTION,ACTIVATE,ASC,AUTOINCREMENT,BEFORE," +
"BUILTIN,BYTE,CACHE,CHANGE,CLEAREPCACHE,CLONE,CLUSTER,CLUSTERS,COLUMNS,COMMENT," +
"COMPRESSION,CONSTRAINTS,COPY,CP,CREDENTIALS,D,DATA,DATABASES,DEFERRABLE," +
"DEFERRED,DELIMITED,DESC,DIRECTORY,DISABLE,DUAL,ENABLE,ENFORCED," +
"EXCLUSIVE,EXPLAIN,EXPORTED,FAIL,FIELDS,FILE,FILES,FIRST,FN,FORCE,FORMAT," +
"FORMATS,FUNCTIONS,GRANTS,GSINSTANCE,GSINSTANCES,HELP,HIBERNATE,HINTS," +
"HISTORY,IDENTIFIED,IMMUTABLE,IMPORTED,INCIDENT,INCIDENTS,INFO,INITIALLY," +
"ISSUES,KEEP,KEY,KEYS,LAST,LIMIT,LIST,LOAD,LOCATION,LOCK,LOCKS,LS,MANAGE,MAP,MATCHED," +
"MATERIALIZED,MODIFY,MONITOR,MONITORS,NAME,NETWORK,NEXT,NORELY,NOTIFY,NOVALIDATE,NULLS,OBJECTS," +
"OFFSET,OJ,OPERATE,OPERATION,OPTION,OWNERSHIP,PARAMETERS,PARTIAL," +
"PERCENT,PLAN,PLUS,POLICIES,POLICY,POOL,PRESERVE,PRIVILEGES,PUBLIC,PURGE,PUT,QUIESCE," +
"READ,RECLUSTER,REFERENCE,RELY,REMOVE,RENAME,REPLACE,REPLACE_FAIL,RESOURCE," +
"RESTART,RESTORE,RESTRICT,RESUME,REWRITE,RM,ROLE,ROLES,RULE,SAMPLE,SCHEMAS,SEMI," +
"SEQUENCE,SEQUENCES,SERVER,SERVERS,SESSION,SETLOGLEVEL,SETS,SFC,SHARE,SHARED,SHARES,SHOW,SHUTDOWN,SIMPLE,SORT," +
"STAGE,STAGES,STATEMENT,STATISTICS,STOP,STORED,STRICT,STRUCT,SUSPEND,SUSPEND_IMMEDIATE,SWAP,SWITCH,T," +
"TABLES,TEMP,TEMPORARY,TRANSACTION,TRANSACTIONS,TRANSIENT,TRIGGERS,TRUNCATE,TS,TYPE,UNDROP,UNLOCK,UNSET," +
"UPGRADE,USAGE,USE,USERS,UTC,UTCTIMESTAMP,VALIDATE,VARIABLES,VERSION,VIEWS,VOLATILE,VOLUME," +
"VOLUMES,WAREHOUSE,WAREHOUSES,WARN,WORK,WRITE,ZONE,INCREMENT,MINUS,REGEXP,RLIKE";
private Connection connection;
private SFSession session;
private boolean metadataRequestUseConnectionCtx;
public SnowflakeDatabaseMetaData(Connection connection)
{
logger.debug(
"public SnowflakeDatabaseMetaData(SnowflakeConnection connection)");
this.connection = connection;
this.session = ((SnowflakeConnectionV1)connection).getSfSession();
this.metadataRequestUseConnectionCtx = session.getMetadataRequestUseConnectionCtx();
}
@Override
public boolean allProceduresAreCallable() throws SQLException
{
logger.debug(
"public boolean allProceduresAreCallable()");
return false;
}
@Override
public boolean allTablesAreSelectable() throws SQLException
{
logger.debug("public boolean allTablesAreSelectable()");
return true;
}
@Override
public String getURL() throws SQLException
{
logger.debug("public String getURL()");
return ((SnowflakeConnectionV1)connection).getURL();
}
@Override
public String getUserName() throws SQLException
{
logger.debug("public String getUserName()");
return ((SnowflakeConnectionV1)connection).getUserName();
}
@Override
public boolean isReadOnly() throws SQLException
{
logger.debug("public boolean isReadOnly()");
return false;
}
@Override
public boolean nullsAreSortedHigh() throws SQLException
{
logger.debug("public boolean nullsAreSortedHigh()");
return true;
}
@Override
public boolean nullsAreSortedLow() throws SQLException
{
logger.debug("public boolean nullsAreSortedLow()");
return false;
}
@Override
public boolean nullsAreSortedAtStart() throws SQLException
{
logger.debug("public boolean nullsAreSortedAtStart()");
return false;
}
@Override
public boolean nullsAreSortedAtEnd() throws SQLException
{
logger.debug("public boolean nullsAreSortedAtEnd()");
return false;
}
@Override
public String getDatabaseProductName() throws SQLException
{
logger.debug("public String getDatabaseProductName()");
return DatabaseProductName;
}
@Override
public String getDatabaseProductVersion() throws SQLException
{
logger.debug("public String getDatabaseProductVersion()");
// We will use the same version numbers for client, GS and XP +
return ((SnowflakeConnectionV1)connection).getDatabaseVersion() +
" (" + getDriverVersion() + ")";
}
@Override
public String getDriverName() throws SQLException
{
logger.debug("public String getDriverName()");
return DriverName;
}
@Override
public String getDriverVersion() throws SQLException
{
logger.debug("public String getDriverVersion()");
StringBuilder versionBuilder = new StringBuilder();
versionBuilder.append(("driver change version: "));
versionBuilder.append(SnowflakeDriver.majorVersion);
versionBuilder.append(".");
versionBuilder.append(SnowflakeDriver.minorVersion);
versionBuilder.append(".");
versionBuilder.append(SnowflakeDriver.changeVersion);
String newClientForUpdate = "";
newClientForUpdate =
((SnowflakeConnectionV1)connection).getNewClientForUpdate();
// add new client version if current is older
if (newClientForUpdate != null)
{
versionBuilder.append(", latest change version: ");
versionBuilder.append(newClientForUpdate);
}
return versionBuilder.toString();
}
@Override
public int getDriverMajorVersion()
{
logger.debug("public int getDriverMajorVersion()");
return SnowflakeDriver.majorVersion;
}
@Override
public int getDriverMinorVersion()
{
logger.debug("public int getDriverMinorVersion()");
return SnowflakeDriver.minorVersion;
}
@Override
public boolean usesLocalFiles() throws SQLException
{
logger.debug("public boolean usesLocalFiles()");
return false;
}
@Override
public boolean usesLocalFilePerTable() throws SQLException
{
logger.debug("public boolean usesLocalFilePerTable()");
return false;
}
@Override
public boolean supportsMixedCaseIdentifiers() throws SQLException
{
logger.debug(
"public boolean supportsMixedCaseIdentifiers()");
return false;
}
@Override
public boolean storesUpperCaseIdentifiers() throws SQLException
{
logger.debug(
"public boolean storesUpperCaseIdentifiers()");
return true;
}
@Override
public boolean storesLowerCaseIdentifiers() throws SQLException
{
logger.debug(
"public boolean storesLowerCaseIdentifiers()");
return false;
}
@Override
public boolean storesMixedCaseIdentifiers() throws SQLException
{
logger.debug(
"public boolean storesMixedCaseIdentifiers()");
return false;
}
@Override
public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException
{
logger.debug(
"public boolean supportsMixedCaseQuotedIdentifiers()");
return true;
}
@Override
public boolean storesUpperCaseQuotedIdentifiers() throws SQLException
{
logger.debug(
"public boolean storesUpperCaseQuotedIdentifiers()");
return false;
}
@Override
public boolean storesLowerCaseQuotedIdentifiers() throws SQLException
{
logger.debug(
"public boolean storesLowerCaseQuotedIdentifiers()");
return false;
}
@Override
public boolean storesMixedCaseQuotedIdentifiers() throws SQLException
{
logger.debug(
"public boolean storesMixedCaseQuotedIdentifiers()");
return true;
}
@Override
public String getIdentifierQuoteString() throws SQLException
{
logger.debug(
"public String getIdentifierQuoteString()");
return "\"";
}
@Override
public String getSQLKeywords() throws SQLException
{
logger.debug("public String getSQLKeywords()");
return notSQL2003Keywords;
}
@Override
public String getNumericFunctions() throws SQLException
{
logger.debug("public String getNumericFunctions()");
return NumericFunctionsSupported;
}
@Override
public String getStringFunctions() throws SQLException
{
logger.debug("public String getStringFunctions()");
return StringFunctionsSupported;
}
@Override
public String getSystemFunctions() throws SQLException
{
logger.debug("public String getSystemFunctions()");
return SystemFunctionsSupported;
}
@Override
public String getTimeDateFunctions() throws SQLException
{
logger.debug("public String getTimeDateFunctions()");
return DateAndTimeFunctionsSupported;
}
@Override
public String getSearchStringEscape() throws SQLException
{
logger.debug("public String getSearchStringEscape()");
return Character.toString(SEARCH_STRING_ESCAPE);
}
@Override
public String getExtraNameCharacters() throws SQLException
{
logger.debug("public String getExtraNameCharacters()");
return "$";
}
@Override
public boolean supportsAlterTableWithAddColumn() throws SQLException
{
logger.debug(
"public boolean supportsAlterTableWithAddColumn()");
return true;
}
@Override
public boolean supportsAlterTableWithDropColumn() throws SQLException
{
logger.debug(
"public boolean supportsAlterTableWithDropColumn()");
return true;
}
@Override
public boolean supportsColumnAliasing() throws SQLException
{
logger.debug("public boolean supportsColumnAliasing()");
return true;
}
@Override
public boolean nullPlusNonNullIsNull() throws SQLException
{
logger.debug("public boolean nullPlusNonNullIsNull()");
return true;
}
@Override
public boolean supportsConvert() throws SQLException
{
logger.debug("public boolean supportsConvert()");
return false;
}
@Override
public boolean supportsConvert(int fromType, int toType) throws SQLException
{
logger.debug(
"public boolean supportsConvert(int fromType, int toType)");
return false;
}
@Override
public boolean supportsTableCorrelationNames() throws SQLException
{
logger.debug(
"public boolean supportsTableCorrelationNames()");
return true;
}
@Override
public boolean supportsDifferentTableCorrelationNames() throws SQLException
{
logger.debug(
"public boolean supportsDifferentTableCorrelationNames()");
return false;
}
@Override
public boolean supportsExpressionsInOrderBy() throws SQLException
{
logger.debug(
"public boolean supportsExpressionsInOrderBy()");
return true;
}
@Override
public boolean supportsOrderByUnrelated() throws SQLException
{
logger.debug(
"public boolean supportsOrderByUnrelated()");
return true;
}
@Override
public boolean supportsGroupBy() throws SQLException
{
logger.debug("public boolean supportsGroupBy()");
return true;
}
@Override
public boolean supportsGroupByUnrelated() throws SQLException
{
logger.debug(
"public boolean supportsGroupByUnrelated()");
return false;
}
@Override
public boolean supportsGroupByBeyondSelect() throws SQLException
{
logger.debug(
"public boolean supportsGroupByBeyondSelect()");
return true;
}
@Override
public boolean supportsLikeEscapeClause() throws SQLException
{
logger.debug(
"public boolean supportsLikeEscapeClause()");
return false;
}
@Override
public boolean supportsMultipleResultSets() throws SQLException
{
logger.debug(
"public boolean supportsMultipleResultSets()");
return false;
}
@Override
public boolean supportsMultipleTransactions() throws SQLException
{
logger.debug(
"public boolean supportsMultipleTransactions()");
return true;
}
@Override
public boolean supportsNonNullableColumns() throws SQLException
{
logger.debug(
"public boolean supportsNonNullableColumns()");
return true;
}
@Override
public boolean supportsMinimumSQLGrammar() throws SQLException
{
logger.debug(
"public boolean supportsMinimumSQLGrammar()");
return false;
}
@Override
public boolean supportsCoreSQLGrammar() throws SQLException
{
logger.debug("public boolean supportsCoreSQLGrammar()");
return false;
}
@Override
public boolean supportsExtendedSQLGrammar() throws SQLException
{
logger.debug(
"public boolean supportsExtendedSQLGrammar()");
return false;
}
@Override
public boolean supportsANSI92EntryLevelSQL() throws SQLException
{
logger.debug(
"public boolean supportsANSI92EntryLevelSQL()");
return true;
}
@Override
public boolean supportsANSI92IntermediateSQL() throws SQLException
{
logger.debug(
"public boolean supportsANSI92IntermediateSQL()");
return false;
}
@Override
public boolean supportsANSI92FullSQL() throws SQLException
{
logger.debug("public boolean supportsANSI92FullSQL()");
return false;
}
@Override
public boolean supportsIntegrityEnhancementFacility() throws SQLException
{
logger.debug(
"public boolean supportsIntegrityEnhancementFacility()");
return false;
}
@Override
public boolean supportsOuterJoins() throws SQLException
{
logger.debug("public boolean supportsOuterJoins()");
return true;
}
@Override
public boolean supportsFullOuterJoins() throws SQLException
{
logger.debug("public boolean supportsFullOuterJoins()");
return true;
}
@Override
public boolean supportsLimitedOuterJoins() throws SQLException
{
logger.debug(
"public boolean supportsLimitedOuterJoins()");
return true;
}
@Override
public String getSchemaTerm() throws SQLException
{
logger.debug("public String getSchemaTerm()");
return "schema";
}
@Override
public String getProcedureTerm() throws SQLException
{
logger.debug("public String getProcedureTerm()");
return "procedure";
}
@Override
public String getCatalogTerm() throws SQLException
{
logger.debug("public String getCatalogTerm()");
return "database";
}
@Override
public boolean isCatalogAtStart() throws SQLException
{
logger.debug("public boolean isCatalogAtStart()");
return true;
}
@Override
public String getCatalogSeparator() throws SQLException
{
logger.debug("public String getCatalogSeparator()");
return ".";
}
@Override
public boolean supportsSchemasInDataManipulation() throws SQLException
{
logger.debug(
"public boolean supportsSchemasInDataManipulation()");
return true;
}
@Override
public boolean supportsSchemasInProcedureCalls() throws SQLException
{
logger.debug(
"public boolean supportsSchemasInProcedureCalls()");
return false;
}
@Override
public boolean supportsSchemasInTableDefinitions() throws SQLException
{
logger.debug(
"public boolean supportsSchemasInTableDefinitions()");
return true;
}
@Override
public boolean supportsSchemasInIndexDefinitions() throws SQLException
{
logger.debug(
"public boolean supportsSchemasInIndexDefinitions()");
return false;
}
@Override
public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException
{
logger.debug(
"public boolean supportsSchemasInPrivilegeDefinitions()");
return false;
}
@Override
public boolean supportsCatalogsInDataManipulation() throws SQLException
{
logger.debug(
"public boolean supportsCatalogsInDataManipulation()");
return true;
}
@Override
public boolean supportsCatalogsInProcedureCalls() throws SQLException
{
logger.debug(
"public boolean supportsCatalogsInProcedureCalls()");
return false;
}
@Override
public boolean supportsCatalogsInTableDefinitions() throws SQLException
{
logger.debug(
"public boolean supportsCatalogsInTableDefinitions()");
return true;
}
@Override
public boolean supportsCatalogsInIndexDefinitions() throws SQLException
{
logger.debug(
"public boolean supportsCatalogsInIndexDefinitions()");
return false;
}
@Override
public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException
{
logger.debug(
"public boolean supportsCatalogsInPrivilegeDefinitions()");
return false;
}
@Override
public boolean supportsPositionedDelete() throws SQLException
{
logger.debug(
"public boolean supportsPositionedDelete()");
return false;
}
@Override
public boolean supportsPositionedUpdate() throws SQLException
{
logger.debug(
"public boolean supportsPositionedUpdate()");
return false;
}
@Override
public boolean supportsSelectForUpdate() throws SQLException
{
logger.debug(
"public boolean supportsSelectForUpdate()");
return false;
}
@Override
public boolean supportsStoredProcedures() throws SQLException
{
logger.debug(
"public boolean supportsStoredProcedures()");
return false;
}
@Override
public boolean supportsSubqueriesInComparisons() throws SQLException
{
logger.debug(
"public boolean supportsSubqueriesInComparisons()");
return true;
}
@Override
public boolean supportsSubqueriesInExists() throws SQLException
{
logger.debug(
"public boolean supportsSubqueriesInExists()");
return true;
}
@Override
public boolean supportsSubqueriesInIns() throws SQLException
{
logger.debug(
"public boolean supportsSubqueriesInIns()");
return true;
}
@Override
public boolean supportsSubqueriesInQuantifieds() throws SQLException
{
logger.debug(
"public boolean supportsSubqueriesInQuantifieds()");
return false;
}
@Override
public boolean supportsCorrelatedSubqueries() throws SQLException
{
logger.debug(
"public boolean supportsCorrelatedSubqueries()");
return true;
}
@Override
public boolean supportsUnion() throws SQLException
{
logger.debug("public boolean supportsUnion()");
return true;
}
@Override
public boolean supportsUnionAll() throws SQLException
{
logger.debug("public boolean supportsUnionAll()");
return true;
}
@Override
public boolean supportsOpenCursorsAcrossCommit() throws SQLException
{
logger.debug(
"public boolean supportsOpenCursorsAcrossCommit()");
return false;
}
@Override
public boolean supportsOpenCursorsAcrossRollback() throws SQLException
{
logger.debug(
"public boolean supportsOpenCursorsAcrossRollback()");
return false;
}
@Override
public boolean supportsOpenStatementsAcrossCommit() throws SQLException
{
logger.debug(
"public boolean supportsOpenStatementsAcrossCommit()");
return false;
}
@Override
public boolean supportsOpenStatementsAcrossRollback() throws SQLException
{
logger.debug(
"public boolean supportsOpenStatementsAcrossRollback()");
return false;
}
@Override
public int getMaxBinaryLiteralLength() throws SQLException
{
logger.debug("public int getMaxBinaryLiteralLength()");
return 0;
}
@Override
public int getMaxCharLiteralLength() throws SQLException
{
logger.debug("public int getMaxCharLiteralLength()");
return 16777216;
}
@Override
public int getMaxColumnNameLength() throws SQLException
{
logger.debug("public int getMaxColumnNameLength()");
return 255;
}
@Override
public int getMaxColumnsInGroupBy() throws SQLException
{
logger.debug("public int getMaxColumnsInGroupBy()");
return 0;
}
@Override
public int getMaxColumnsInIndex() throws SQLException
{
logger.debug("public int getMaxColumnsInIndex()");
return 0;
}
@Override
public int getMaxColumnsInOrderBy() throws SQLException
{
logger.debug("public int getMaxColumnsInOrderBy()");
return 0;
}
@Override
public int getMaxColumnsInSelect() throws SQLException
{
logger.debug("public int getMaxColumnsInSelect()");
return 0;
}
@Override
public int getMaxColumnsInTable() throws SQLException
{
logger.debug("public int getMaxColumnsInTable()");
return 0;
}
@Override
public int getMaxConnections() throws SQLException
{
logger.debug("public int getMaxConnections()");
return 0;
}
@Override
public int getMaxCursorNameLength() throws SQLException
{
logger.debug("public int getMaxCursorNameLength()");
return 0;
}
@Override
public int getMaxIndexLength() throws SQLException
{
logger.debug("public int getMaxIndexLength()");
return 0;
}
@Override
public int getMaxSchemaNameLength() throws SQLException
{
logger.debug("public int getMaxSchemaNameLength()");
return 255;
}
@Override
public int getMaxProcedureNameLength() throws SQLException
{
logger.debug("public int getMaxProcedureNameLength()");
return 0;
}
@Override
public int getMaxCatalogNameLength() throws SQLException
{
logger.debug("public int getMaxCatalogNameLength()");
return 255;
}
@Override
public int getMaxRowSize() throws SQLException
{
logger.debug("public int getMaxRowSize()");
return 0;
}
@Override
public boolean doesMaxRowSizeIncludeBlobs() throws SQLException
{
logger.debug(
"public boolean doesMaxRowSizeIncludeBlobs()");
return true;
}
@Override
public int getMaxStatementLength() throws SQLException
{
logger.debug("public int getMaxStatementLength()");
return 0;
}
@Override
public int getMaxStatements() throws SQLException
{
logger.debug("public int getMaxStatements()");
return 0;
}
@Override
public int getMaxTableNameLength() throws SQLException
{
logger.debug("public int getMaxTableNameLength()");
return 255;
}
@Override
public int getMaxTablesInSelect() throws SQLException
{
logger.debug("public int getMaxTablesInSelect()");
return 0;
}
@Override
public int getMaxUserNameLength() throws SQLException
{
logger.debug("public int getMaxUserNameLength()");
return 255;
}
@Override
public int getDefaultTransactionIsolation() throws SQLException
{
logger.debug(
"public int getDefaultTransactionIsolation()");
return Connection.TRANSACTION_READ_COMMITTED;
}
@Override
public boolean supportsTransactions() throws SQLException
{
logger.debug("public boolean supportsTransactions()");
return true;
}
@Override
public boolean supportsTransactionIsolationLevel(int level)
throws SQLException
{
logger.debug(
"public boolean supportsTransactionIsolationLevel(int level)");
return (level == Connection.TRANSACTION_NONE)
|| (level == Connection.TRANSACTION_READ_COMMITTED);
}
@Override
public boolean supportsDataDefinitionAndDataManipulationTransactions()
throws SQLException
{
logger.debug(
"public boolean "
+ "supportsDataDefinitionAndDataManipulationTransactions()");
return true;
}
@Override
public boolean supportsDataManipulationTransactionsOnly() throws SQLException
{
logger.debug(
"public boolean supportsDataManipulationTransactionsOnly()");
return false;
}
@Override
public boolean dataDefinitionCausesTransactionCommit() throws SQLException
{
logger.debug(
"public boolean dataDefinitionCausesTransactionCommit()");
return true;
}
@Override
public boolean dataDefinitionIgnoredInTransactions() throws SQLException
{
logger.debug(
"public boolean dataDefinitionIgnoredInTransactions()");
return false;
}
@Override
public ResultSet getProcedures(String catalog, String schemaPattern,
String procedureNamePattern)
throws SQLException
{
logger.debug(
"public ResultSet getProcedures(String catalog, "
+ "String schemaPattern,String procedureNamePattern)");
Statement statement = connection.createStatement();
// Return empty result set since we don't have primary keys yet
return new SnowflakeDatabaseMetaDataResultSet(
Arrays.asList("PROCEDURE_CAT", "PROCEDURE_SCHEM", "PROCEDURE_NAME",
"REMARKS", "PROCEDURE_TYPE", "SPECIFIC_NAME"),
Arrays.asList("TEXT", "TEXT", "TEXT", "TEXT",
"SHORT", "TEXT"),
Arrays.asList(Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
Types.VARCHAR, Types.SMALLINT, Types.VARCHAR),
new Object[][]
{
}, statement);
}
@Override
public ResultSet getProcedureColumns(String catalog, String schemaPattern,
String procedureNamePattern,
String columnNamePattern)
throws SQLException
{
logger.debug(
"public ResultSet getProcedureColumns(String catalog, "
+ "String schemaPattern,String procedureNamePattern,"
+ "String columnNamePattern)");
Statement statement = connection.createStatement();
//throw new SQLFeatureNotSupportedException();
return new SnowflakeDatabaseMetaDataResultSet(
Arrays.asList("PROCEDURE_CAT", "PROCEDURE_SCHEM", "PROCEDURE_NAME",
"COLUMN_NAME", "COLUMN_TYPE", "DATA_TYPE", "TYPE_NAME",
"PRECISION", "LENGTH", "SCALE", "RADIX", "NULLABLE",
"REMARKS", "COLUMN_DEF", "SQL_DATA_TYPE", "SQL_DATETIME_SUB",
"CHAR_OCTET_LENGTH", "ORDINAL_POSITION", "IS_NULLABLE",
"SPECIFIC_NAME"),
Arrays.asList("TEXT", "TEXT", "TEXT", "TEXT", "SHORT", "INTEGER", "TEXT",
"INTEGER", "INTEGER", "SHORT", "SHORT", "SHORT", "TEXT",
"TEXT", "INTEGER", "INTEGER", "INTEGER", "INTEGER", "TEXT", "TEXT"),
Arrays.asList(Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
Types.SMALLINT, Types.INTEGER, Types.VARCHAR, Types.INTEGER,
Types.INTEGER, Types.SMALLINT, Types.SMALLINT, Types.SMALLINT,
Types.VARCHAR, Types.VARCHAR, Types.INTEGER, Types.INTEGER,
Types.INTEGER, Types.INTEGER, Types.VARCHAR, Types.VARCHAR),
new Object[][]{},
statement
);
}
@Override
public ResultSet getTables(String catalog, String schemaPattern,
String tableNamePattern, String[] types)
throws SQLException
{
logger.debug(
"public ResultSet getTables(String catalog={}, String "
+ "schemaPattern={}, String tableNamePattern={}, " +
"String[] types={})",
new Object[]{catalog, schemaPattern, tableNamePattern,
StringUtils.join(types, ",")});
Set supportedTableTypes = new HashSet<>();
ResultSet resultSet = getTableTypes();
while(resultSet.next())
{
supportedTableTypes.add(resultSet.getString("TABLE_TYPE"));
}
resultSet.close();
List inputValidTableTypes = new ArrayList<>();
// then filter on the input table types;
if (types != null)
{
for (int i = 0; i < types.length; i++) {
if (supportedTableTypes.contains(types[i])) {
inputValidTableTypes.add(types[i]);
}
}
}
else
{
inputValidTableTypes = new ArrayList(supportedTableTypes);
}
// if the input table types don't have types supported by Snowflake,
// then return an empty result set directly
Statement statement = connection.createStatement();
if (inputValidTableTypes.size() == 0)
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_TABLES, statement);
}
if (catalog == null && schemaPattern == null && metadataRequestUseConnectionCtx)
{
catalog = session.getDatabase();
schemaPattern = session.getSchema();
}
final Pattern compiledSchemaPattern = Wildcard.toRegexPattern(schemaPattern, true);
final Pattern compiledTablePattern = Wildcard.toRegexPattern(tableNamePattern, true);
String showCommand = null;
final boolean viewOnly = inputValidTableTypes.size() == 1
&& "VIEW".equalsIgnoreCase(inputValidTableTypes.get(0));
final boolean tableOnly = inputValidTableTypes.size() == 1
&& "TABLE".equalsIgnoreCase(inputValidTableTypes.get(0));
if (viewOnly)
{
showCommand = "show /* JDBC:DatabaseMetaData.getTables() */ views";
}
else if (tableOnly)
{
showCommand = "show /* JDBC:DatabaseMetaData.getTables() */ tables";
}
else
{
showCommand = "show /* JDBC:DatabaseMetaData.getTables() */ objects";
}
// only add pattern if it is not empty and not matching all character.
if (tableNamePattern != null && !tableNamePattern.isEmpty()
&& !tableNamePattern.trim().equals("%")
&& !tableNamePattern.trim().equals(".*"))
{
showCommand += " like '" + tableNamePattern + "'";
}
if (catalog == null)
{
showCommand += " in account";
}
else if (catalog.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_TABLES, statement);
}
else
{
// if the schema pattern is a deterministic identifier, specify schema
// in the show command. This is necessary for us to see any tables in
// a schema if the current schema a user is connected to is different
// given that we don't support show tables without a known schema.
if (schemaPattern == null || Wildcard.isWildcardPatternStr(schemaPattern))
{
showCommand += " in database \"" + catalog + "\"";
}
else if (schemaPattern.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_TABLES, statement);
}
else
{
schemaPattern = schemaPattern.replace("\\", "");
showCommand += " in schema \"" + catalog + "\".\"" +
schemaPattern + "\"";
}
}
logger.info("sql command to get table metadata: {}", showCommand);
resultSet = executeAndReturnEmptyResultIfNotFound(statement, showCommand, GET_TABLES);
return new SnowflakeDatabaseMetaDataResultSet(GET_TABLES, resultSet, statement)
{
public boolean next() throws SQLException
{
logger.debug("public boolean next()");
// iterate throw the show table result until we find an entry
// that matches the table name
while (showObjectResultSet.next())
{
String tableName = showObjectResultSet.getString(2);
String dbName;
String schemaName;
String kind;
String comment;
if (viewOnly)
{
dbName = showObjectResultSet.getString(4);
schemaName = showObjectResultSet.getString(5);
kind = "VIEW";
comment = showObjectResultSet.getString(7);
}
else
{
dbName = showObjectResultSet.getString(3);
schemaName = showObjectResultSet.getString(4);
kind = showObjectResultSet.getString(5);
comment = showObjectResultSet.getString(6);
}
if ((compiledTablePattern == null
|| compiledTablePattern.matcher(tableName).matches())
&& (compiledSchemaPattern == null
|| compiledSchemaPattern.matcher(schemaName).matches()))
{
nextRow[0] = dbName;
nextRow[1] = schemaName;
nextRow[2] = tableName;
nextRow[3] = kind;
nextRow[4] = comment;
nextRow[5] = null;
nextRow[6] = null;
nextRow[7] = null;
nextRow[8] = null;
nextRow[9] = null;
return true;
}
}
statement.close();
statement = null;
return false;
}
};
}
@Override
public ResultSet getSchemas() throws SQLException
{
logger.debug("public ResultSet getSchemas()");
return getSchemas(null, null);
}
@Override
public ResultSet getCatalogs() throws SQLException
{
logger.debug("public ResultSet getCatalogs()");
String showDB = "show /* JDBC:DatabaseMetaData.getCatalogs() */ databases in account";
Statement statement = connection.createStatement();
return new SnowflakeDatabaseMetaDataResultSet(GET_CATALOGS,
statement.executeQuery(showDB), statement)
{
public boolean next() throws SQLException
{
logger.debug("public boolean next()");
// iterate throw the show databases result
while (showObjectResultSet.next())
{
String dbName = showObjectResultSet.getString(2);
nextRow[0] = dbName;
return true;
}
statement.close();
statement = null;
return false;
}
};
}
@Override
public ResultSet getTableTypes() throws SQLException
{
logger.debug("public ResultSet getTableTypes()");
Statement statement = connection.createStatement();
// TODO: We should really get the list of table types from GS
return new SnowflakeDatabaseMetaDataResultSet(
Arrays.asList("TABLE_TYPE"),
Arrays.asList("TEXT"),
Arrays.asList(Types.VARCHAR),
new Object[][]
{
{
"TABLE"
},
{
"VIEW"
}
}, statement);
}
@Override
public ResultSet getColumns(String catalog, String schemaPattern,
String tableNamePattern,
String columnNamePattern)
throws SQLException
{
return getColumns(catalog, schemaPattern, tableNamePattern,
columnNamePattern, false);
}
public ResultSet getColumns(String catalog, String schemaPattern,
String tableNamePattern,
String columnNamePattern,
final boolean extendedSet)
throws SQLException
{
Statement statement = connection.createStatement();
logger.debug("public ResultSet getColumns(String catalog={}, String schemaPattern={}" +
"String tableNamePattern={}, String columnNamePattern={}, boolean extendedSet={}",
catalog, schemaPattern, tableNamePattern, columnNamePattern, extendedSet);
if (catalog == null && schemaPattern == null && metadataRequestUseConnectionCtx)
{
catalog = session.getDatabase();
schemaPattern = session.getSchema();
}
final Pattern compiledSchemaPattern = Wildcard.toRegexPattern(schemaPattern, true);
final Pattern compiledTablePattern = Wildcard.toRegexPattern(tableNamePattern, true);
final Pattern compiledColumnPattern = Wildcard.toRegexPattern(columnNamePattern, true);
String showColumnCommand = "show /* JDBC:DatabaseMetaData.getColumns() */ columns";
if (columnNamePattern != null && !columnNamePattern.isEmpty() &&
!columnNamePattern.trim().equals("%") &&
!columnNamePattern.trim().equals(".*"))
{
showColumnCommand += " like '" + columnNamePattern + "'";
}
if (catalog == null)
{
showColumnCommand += " in account";
}
else if (catalog.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(
extendedSet ? GET_COLUMNS_EXTENDED_SET : GET_COLUMNS, statement);
}
else
{
if (schemaPattern == null || Wildcard.isWildcardPatternStr(schemaPattern))
{
showColumnCommand += " in database \"" + catalog + "\"";
}
else if (schemaPattern.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(
extendedSet ? GET_COLUMNS_EXTENDED_SET : GET_COLUMNS, statement);
}
else
{
schemaPattern = schemaPattern.replace("\\", "");
if (tableNamePattern == null || Wildcard.isWildcardPatternStr(tableNamePattern))
{
showColumnCommand += " in schema \"" + catalog + "\".\"" +
schemaPattern + "\"";
}
else if (tableNamePattern.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(
extendedSet ? GET_COLUMNS_EXTENDED_SET : GET_COLUMNS, statement);
}
else
{
tableNamePattern = tableNamePattern.replace("\\", "");
showColumnCommand += " in table \"" + catalog + "\".\"" +
schemaPattern + "\".\"" + tableNamePattern + "\"";
}
}
}
logger.info("sql command to get column metadata: {}",
showColumnCommand);
ResultSet resultSet = executeAndReturnEmptyResultIfNotFound(statement, showColumnCommand,
extendedSet ? GET_COLUMNS_EXTENDED_SET : GET_COLUMNS);
return new SnowflakeDatabaseMetaDataResultSet(
extendedSet ? GET_COLUMNS_EXTENDED_SET : GET_COLUMNS,
resultSet, statement)
{
int ordinalPosition = 0;
String currentTableName = null;
public boolean next() throws SQLException
{
logger.debug("public boolean next()");
// iterate throw the show table result until we find an entry
// that matches the table name
while (showObjectResultSet.next())
{
String tableName = showObjectResultSet.getString(1);
String schemaName = showObjectResultSet.getString(2);
String columnName = showObjectResultSet.getString(3);
String dataTypeStr = showObjectResultSet.getString(4);
String defaultValue = showObjectResultSet.getString(6);
String comment = showObjectResultSet.getString(9);
String catalogName = showObjectResultSet.getString(10);
String autoIncrement = showObjectResultSet.getString(11);
if ((compiledTablePattern == null
|| compiledTablePattern.matcher(tableName).matches())
&& (compiledSchemaPattern == null
|| compiledSchemaPattern.matcher(schemaName).matches())
&& (compiledColumnPattern == null
|| compiledColumnPattern.matcher(columnName).matches()))
{
logger.debug(
"Found a matched column:" + tableName
+ "." + columnName);
// reset ordinal position for new table
if (!tableName.equals(currentTableName))
{
ordinalPosition = 1;
currentTableName = tableName;
}
else
{
ordinalPosition++;
}
JsonNode jsonNode;
try
{
jsonNode = mapper.readTree(dataTypeStr);
}
catch (Exception ex)
{
logger.error("Exeception when parsing column"
+ " result", ex);
throw new SnowflakeSQLException(SqlState.INTERNAL_ERROR,
ErrorCode.INTERNAL_ERROR
.getMessageCode(),
"error parsing data type: "
+ dataTypeStr);
}
logger.debug("data type string: {}",
dataTypeStr);
SnowflakeColumnMetadata columnMetadata
= SnowflakeUtil
.extractColumnMetadata(jsonNode);
logger.debug("nullable: {}",
columnMetadata.isNullable());
// SNOW-16881: add catalog name
nextRow[0] = catalogName;
nextRow[1] = schemaName;
nextRow[2] = tableName;
nextRow[3] = columnName;
int internalColumnType = columnMetadata.getType();
int externalColumnType = internalColumnType;
if (internalColumnType == SnowflakeUtil.EXTRA_TYPES_TIMESTAMP_LTZ ||
internalColumnType == SnowflakeUtil.EXTRA_TYPES_TIMESTAMP_TZ)
externalColumnType = Types.TIMESTAMP;
nextRow[4] = new Integer(externalColumnType);
nextRow[5] = columnMetadata.getTypeName();
int columnSize = 0;
if (columnMetadata.getType() == Types.VARCHAR
|| columnMetadata.getType() == Types.CHAR)
{
columnSize = columnMetadata.getLength();
}
else if (columnMetadata.getType() == Types.DECIMAL
|| columnMetadata.getType() == Types.TIME
|| columnMetadata.getType() == Types.TIMESTAMP)
{
columnSize = columnMetadata.getPrecision();
}
nextRow[6] = new Integer(columnSize);
nextRow[7] = null;
nextRow[8] = new Integer(columnMetadata.getScale());
nextRow[9] = null;
nextRow[10] = (columnMetadata.isNullable()
? columnNullable : columnNoNulls);
logger.debug("returning nullable: {}",
nextRow[10]);
nextRow[11] = comment;
nextRow[12] = defaultValue;
// snow-10597: sql data type is integer instead of string
nextRow[13] = externalColumnType;
nextRow[14] = null;
nextRow[15] = (columnMetadata.getType() == Types.VARCHAR
|| columnMetadata.getType() == Types.CHAR)
? new Integer(columnMetadata.getLength()) : null;
nextRow[16] = new Integer(ordinalPosition);
nextRow[17] = (columnMetadata.isNullable() ? "YES" : "NO");
nextRow[18] = null;
nextRow[19] = null;
nextRow[20] = null;
nextRow[21] = null;
nextRow[22] = "".equals(autoIncrement) ? "NO" : "YES";
nextRow[23] = "NO";
if (extendedSet)
{
nextRow[24] = columnMetadata.getBase().name();
}
return true;
}
}
statement.close();
statement = null;
return false;
}
};
}
@Override
public ResultSet getColumnPrivileges(String catalog, String schema,
String table, String columnNamePattern)
throws SQLException
{
logger.debug(
"public ResultSet getColumnPrivileges(String catalog, "
+ "String schema,String table, String columnNamePattern)");
Statement statement = connection.createStatement();
return new SnowflakeDatabaseMetaDataResultSet(
Arrays.asList("TABLE_CAT", "TABLE_SCHEM", "TABLE_NAME", "COLUMN_NAME",
"GRANTOR", "GRANTEE", "PRIVILEGE", "IS_GRANTABLE"),
Arrays.asList("TEXT", "TEXT", "TEXT", "TEXT",
"TEXT", "TEXT", "TEXT", "TEXT"),
Arrays.asList(Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
Types.VARCHAR, Types.VARCHAR, Types.VARCHAR, Types.VARCHAR),
new Object[][]
{
}, statement);
}
@Override
public ResultSet getTablePrivileges(String catalog, String schemaPattern,
String tableNamePattern)
throws SQLException
{
logger.debug(
"public ResultSet getTablePrivileges(String catalog, "
+ "String schemaPattern,String tableNamePattern)");
Statement statement = connection.createStatement();
// Return empty result set since we don't have primary keys yet
return new SnowflakeDatabaseMetaDataResultSet(
Arrays.asList("TABLE_CAT", "TABLE_SCHEM", "TABLE_NAME", "GRANTOR",
"GRANTEE", "PRIVILEGE", "IS_GRANTABLE"),
Arrays.asList("TEXT", "TEXT", "TEXT", "TEXT", "TEXT",
"TEXT", "TEXT"),
Arrays.asList(Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
Types.VARCHAR),
new Object[][]
{
}, statement);
}
@Override
public ResultSet getBestRowIdentifier(String catalog, String schema,
String table, int scope,
boolean nullable) throws SQLException
{
logger.debug(
"public ResultSet getBestRowIdentifier(String catalog, "
+ "String schema,String table, int scope,boolean nullable)");
throw new SQLFeatureNotSupportedException();
}
@Override
public ResultSet getVersionColumns(String catalog, String schema,
String table) throws SQLException
{
logger.debug(
"public ResultSet getVersionColumns(String catalog, "
+ "String schema, String table)");
throw new SQLFeatureNotSupportedException();
}
@Override
public ResultSet getPrimaryKeys(String catalog, String schema, final String table)
throws SQLException
{
Statement statement = connection.createStatement();
logger.debug(
"public ResultSet getPrimaryKeys(String catalog={}, "
+ "String schema={}, String table={})",
new Object[]{catalog, schema, table});
String showPKCommand = "show /* JDBC:DatabaseMetaData.getPrimaryKeys() */ primary keys in ";
if (catalog == null && schema == null && metadataRequestUseConnectionCtx)
{
catalog = session.getDatabase();
schema = session.getSchema();
}
if (catalog == null)
{
showPKCommand += "account";
}
else if (catalog.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_PRIMARY_KEYS, statement);
}
else
{
if (schema == null)
{
showPKCommand += "database \"" + catalog + "\"";
}
else if (schema.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_PRIMARY_KEYS, statement);
}
else
{
if (table == null)
{
showPKCommand += "schema \"" + catalog + "\".\"" + schema + "\"";
}
else if (table.isEmpty())
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_PRIMARY_KEYS, statement);
else
{
showPKCommand += "table \"" + catalog + "\".\"" + schema + "\".\"" +
table + "\"";
}
}
}
final String catalogIn = catalog;
final String schemaIn = schema;
final String tableIn = table;
logger.info("sql command to get primary key metadata: {}",
showPKCommand);
ResultSet resultSet = executeAndReturnEmptyResultIfNotFound(statement, showPKCommand, GET_PRIMARY_KEYS);
// Return empty result set since we don't have primary keys yet
return new SnowflakeDatabaseMetaDataResultSet(GET_PRIMARY_KEYS, resultSet, statement)
{
@Override
public boolean next() throws SQLException
{
logger.debug("public boolean next()");
while (showObjectResultSet.next())
{
// Get the values for each field to display
String table_cat = showObjectResultSet.getString(2);
String table_schem = showObjectResultSet.getString(3);
String table_name = showObjectResultSet.getString(4);
String column_name = showObjectResultSet.getString(5);
int key_seq = showObjectResultSet.getInt(6);
String pk_name = showObjectResultSet.getString(7);
// Post filter based on the input
if ((catalogIn == null || catalogIn.equals(table_cat)) &&
(schemaIn == null || schemaIn.equals(table_schem)) &&
(tableIn == null || tableIn.equals(table_name)))
{
nextRow[0] = table_cat;
nextRow[1] = table_schem;
nextRow[2] = table_name;
nextRow[3] = column_name;
nextRow[4] = key_seq;
nextRow[5] = pk_name;
return true;
}
}
statement.close();
statement = null;
return false;
}
};
}
/**
*
* @param client
* @param parentCatalog
* @param parentSchema
* @param parentTable
* @param foreignCatalog
* @param foreignSchema
* @param foreignTable
* @return
*/
private ResultSet getForeignKeys(
final String client, String parentCatalog,
String parentSchema,
final String parentTable, final String foreignCatalog,
final String foreignSchema,
final String foreignTable) throws SQLException
{
Statement statement = connection.createStatement();
StringBuilder commandBuilder = new StringBuilder();
if (client.equals("export") || client.equals("cross"))
{
commandBuilder.append("show /* JDBC:DatabaseMetaData.getForeignKeys() */ " +
"exported keys in ");
}
else if (client.equals("import"))
{
commandBuilder.append("show /* JDBC:DatabaseMetaData.getForeignKeys() */ " +
"imported keys in ");
}
if (parentCatalog == null)
{
commandBuilder.append("account");
}
else if (parentCatalog.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_FOREIGN_KEYS, statement);
}
else
{
if (parentSchema == null)
{
commandBuilder.append("database \"" + parentCatalog + "\"");
}
else if (parentSchema.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_FOREIGN_KEYS, statement);
}
else
{
if (parentTable == null)
{
commandBuilder.append("schema \"" + parentCatalog + "\".\"" +
parentSchema + "\"");
}
else if (parentTable.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_FOREIGN_KEYS, statement);
}
else
{
commandBuilder.append("table \"" + parentCatalog + "\".\"" +
parentSchema + "\".\"" + parentTable + "\"");
}
}
}
final String finalParentCatalog = parentCatalog;
final String finalParentSchema = parentSchema;
String command = commandBuilder.toString();
ResultSet resultSet = executeAndReturnEmptyResultIfNotFound(statement, command, GET_FOREIGN_KEYS);
return new SnowflakeDatabaseMetaDataResultSet(GET_FOREIGN_KEYS, resultSet, statement)
{
@Override
public boolean next() throws SQLException
{
logger.debug("public boolean next()");
while (showObjectResultSet.next())
{
// Get the value for each field to display
String pktable_cat = showObjectResultSet.getString(2);
String pktable_schem = showObjectResultSet.getString(3);
String pktable_name = showObjectResultSet.getString(4);
String pkcolumn_name = showObjectResultSet.getString(5);
String fktable_cat = showObjectResultSet.getString(6);
String fktable_schem = showObjectResultSet.getString(7);
String fktable_name = showObjectResultSet.getString(8);
String fkcolumn_name = showObjectResultSet.getString(9);
int key_seq = showObjectResultSet.getInt(10);
short updateRule = getForeignKeyConstraintProperty(
"update", showObjectResultSet.getString(11));
short deleteRule = getForeignKeyConstraintProperty(
"delete", showObjectResultSet.getString(12));
String fk_name = showObjectResultSet.getString(13);
String pk_name = showObjectResultSet.getString(14);
short deferrability = getForeignKeyConstraintProperty(
"deferrability", showObjectResultSet.getString(15));
boolean passedFilter = false;
// Post filter the results based on the clinet type
if (client.equals("import"))
{
// For imported dkeys, filter on the foreign key table
if ((finalParentCatalog == null || finalParentCatalog.equals(fktable_cat)) &&
(finalParentSchema == null || finalParentSchema.equals(fktable_schem)) &&
(parentTable == null || parentTable.equals(fktable_name)))
passedFilter = true;
}
else if (client.equals("export"))
{
// For exported keys, filter on the primary key table
if ((finalParentCatalog == null || finalParentCatalog.equals(pktable_cat)) &&
(finalParentSchema == null || finalParentSchema.equals(pktable_schem)) &&
(parentTable == null || parentTable.equals(pktable_name)))
passedFilter = true;
}
else if (client.equals("cross"))
{
// For cross references, filter on both the primary key and foreign
// key table
if ((finalParentCatalog == null || finalParentCatalog.equals(pktable_cat)) &&
(finalParentSchema == null || finalParentSchema.equals(pktable_schem)) &&
(parentTable == null || parentTable.equals(pktable_name)) &&
(foreignCatalog == null ||
foreignCatalog.equals(fktable_cat)) &&
(foreignSchema == null ||
foreignSchema.equals(fktable_schem)) &&
(foreignTable == null ||
foreignTable.equals(fktable_name)))
passedFilter = true;
}
if (passedFilter)
{
nextRow[0] = pktable_cat;
nextRow[1] = pktable_schem;
nextRow[2] = pktable_name;
nextRow[3] = pkcolumn_name;
nextRow[4] = fktable_cat;
nextRow[5] = fktable_schem;
nextRow[6] = fktable_name;
nextRow[7] = fkcolumn_name;
nextRow[8] = key_seq;
nextRow[9] = updateRule;
nextRow[10] = deleteRule;
nextRow[11] = fk_name;
nextRow[12] = pk_name;
nextRow[13] = deferrability;
return true;
}
}
statement.close();
statement = null;
return false;
}
};
}
/**
* Returns the ODBC standard property string for the property string used
* in our show constraint commands
* @param property_name
* @param property
* @return
*/
private short getForeignKeyConstraintProperty(
String property_name, String property)
{
short result = 0;
if (property_name.equals("update") || property_name.equals("delete"))
{
if (property.equals("NO ACTION"))
result = importedKeyNoAction;
if (property.equals("CASCADE"))
result = importedKeyCascade;
if (property.equals("SET NULL"))
result = importedKeySetNull;
if (property.equals("SET DEFAULT"))
result = importedKeySetDefault;
if (property.equals("RESTRICT"))
result = importedKeyRestrict;
}
else // deferrability
{
if (property.equals("INITIALLY DEFERRED"))
result = importedKeyInitiallyDeferred;
else if (property.equals("INITIALLY IMMEDIATE"))
result = importedKeyInitiallyImmediate;
else if (property.equals("NOT DEFERRABLE"))
result = importedKeyNotDeferrable;
}
return result;
}
@Override
public ResultSet getImportedKeys(String catalog, String schema, String table)
throws SQLException
{
logger.debug(
"public ResultSet getImportedKeys(String catalog={}, "
+ "String schema={}, String table={})",
new Object[]{catalog, schema, table});
return getForeignKeys("import", catalog, schema, table, null, null, null);
}
@Override
public ResultSet getExportedKeys(String catalog, String schema, String table)
throws SQLException
{
logger.debug(
"public ResultSet getExportedKeys(String catalog={}, "
+ "String schema={}, String table={})",
new Object[]{catalog, schema, table});
return getForeignKeys("export", catalog, schema, table, null, null, null);
}
@Override
public ResultSet getCrossReference(String parentCatalog, String parentSchema,
String parentTable, String foreignCatalog,
String foreignSchema, String foreignTable)
throws SQLException
{
logger.debug(
"public ResultSet getCrossReference(String parentCatalog={}, "
+ "String parentSchema={}, String parentTable={}, "
+ "String foreignCatalog={}, String foreignSchema={}, "
+ "String foreignTable={})",
new Object[]{parentCatalog, parentSchema, parentTable,
foreignCatalog, foreignSchema, foreignTable});
return getForeignKeys("cross", parentCatalog, parentSchema, parentTable,
foreignCatalog, foreignSchema, foreignTable);
}
@Override
public ResultSet getTypeInfo() throws SQLException
{
logger.debug("public ResultSet getTypeInfo()");
Statement statement = connection.createStatement();
// Return empty result set since we don't have primary keys yet
return new SnowflakeDatabaseMetaDataResultSet(
Arrays.asList("TYPE_NAME", "DATA_TYPE", "PRECISION",
"LITERAL_PREFIX", "LITERAL_SUFFIX", "CREATE_PARAMS",
"NULLABLE", "CASE_SENSITIVE", "SEARCHABLE",
"UNSIGNED_ATTRIBUTE", "FIXED_PREC_SCALE",
"AUTO_INCREMENT", "LOCAL_TYPE_NAME", "MINIMUM_SCALE",
"MAXIMUM_SCALE", "SQL_DATA_TYPE", "SQL_DATETIME_SUB",
"NUM_PREC_RADIX"),
Arrays.asList("TEXT", "INTEGER", "INTEGER", "TEXT", "TEXT",
"TEXT", "SHORT", "BOOLEAN", "SHORT", "BOOLEAN",
"BOOLEAN", "BOOLEAN", "TEXT", "SHORT", "SHORT",
"INTEGER", "INTEGER", "INTEGER"),
Arrays.asList(Types.VARCHAR, Types.INTEGER, Types.INTEGER,
Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
Types.SMALLINT, Types.BOOLEAN, Types.SMALLINT,
Types.BOOLEAN, Types.BOOLEAN, Types.BOOLEAN,
Types.VARCHAR, Types.SMALLINT, Types.SMALLINT,
Types.INTEGER, Types.INTEGER, Types.INTEGER),
new Object[][]
{
{
"NUMBER", Types.DECIMAL, 38, null, null, null, typeNullable,
false, typeSearchable, false, true, true, null, 0, 37, -1,
-1, -1
},
{
"INTEGER", Types.INTEGER, 38, null, null, null, typeNullable,
false, typeSearchable, false, true, true, null, 0, 0, -1,
-1, -1
},
{
"DOUBLE", Types.DOUBLE, 38, null, null, null, typeNullable,
false, typeSearchable, false, true, true, null, 0, 37, -1,
-1, -1
},
{
"VARCHAR", Types.VARCHAR, -1, null, null, null, typeNullable,
false, typeSearchable, false, true, true, null, -1, -1, -1,
-1, -1
},
{
"DATE", Types.DATE, -1, null, null, null, typeNullable,
false, typeSearchable, false, true, true, null, -1, -1, -1,
-1, -1
},
{
"TIME", Types.TIME, -1, null, null, null, typeNullable,
false, typeSearchable, false, true, true, null, -1, -1, -1,
-1, -1
},
{
"TIMESTAMP", Types.TIMESTAMP, -1, null, null, null, typeNullable,
false, typeSearchable, false, true, true, null, -1, -1, -1,
-1, -1
},
{
"BOOLEAN", Types.BOOLEAN, -1, null, null, null, typeNullable,
false, typeSearchable, false, true, true, null, -1, -1, -1,
-1, -1
}
}, statement);
}
@Override
public ResultSet getIndexInfo(String catalog, String schema, String table,
boolean unique, boolean approximate)
throws SQLException
{
logger.debug(
"public ResultSet getIndexInfo(String catalog, String schema, "
+ "String table,boolean unique, boolean approximate)");
Statement statement = connection.createStatement();
// Return empty result set since we don't have primary keys yet
return new SnowflakeDatabaseMetaDataResultSet(
Arrays.asList("TABLE_CAT", "TABLE_SCHEM", "TABLE_NAME",
"NON_UNIQUE", "INDEX_QUALIFIER", "INDEX_NAME",
"TYPE", "ORDINAL_POSITION", "COLUMN_NAME",
"ASC_OR_DESC", "CARDINALITY", "PAGES",
"FILTER_CONDITION"),
Arrays.asList("TEXT", "TEXT", "TEXT", "BOOLEAN", "TEXT", "TEXT",
"SHORT", "SHORT", "TEXT", "TEXT", "INTEGER",
"INTEGER", "TEXT"),
Arrays.asList(Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
Types.BOOLEAN, Types.VARCHAR, Types.VARCHAR,
Types.SMALLINT, Types.SMALLINT, Types.VARCHAR,
Types.VARCHAR, Types.INTEGER, Types.INTEGER,
Types.VARCHAR),
new Object[][]
{
}, statement);
}
@Override
public boolean supportsResultSetType(int type) throws SQLException
{
logger.debug(
"public boolean supportsResultSetType(int type)");
return (type == ResultSet.TYPE_FORWARD_ONLY);
}
@Override
public boolean supportsResultSetConcurrency(int type, int concurrency)
throws SQLException
{
logger.debug(
"public boolean supportsResultSetConcurrency(int type, "
+ "int concurrency)");
return (type == ResultSet.TYPE_FORWARD_ONLY
&& concurrency == ResultSet.CONCUR_READ_ONLY);
}
@Override
public boolean ownUpdatesAreVisible(int type) throws SQLException
{
logger.debug(
"public boolean ownUpdatesAreVisible(int type)");
return false;
}
@Override
public boolean ownDeletesAreVisible(int type) throws SQLException
{
logger.debug(
"public boolean ownDeletesAreVisible(int type)");
return false;
}
@Override
public boolean ownInsertsAreVisible(int type) throws SQLException
{
logger.debug(
"public boolean ownInsertsAreVisible(int type)");
return false;
}
@Override
public boolean othersUpdatesAreVisible(int type) throws SQLException
{
logger.debug(
"public boolean othersUpdatesAreVisible(int type)");
return false;
}
@Override
public boolean othersDeletesAreVisible(int type) throws SQLException
{
logger.debug(
"public boolean othersDeletesAreVisible(int type)");
return false;
}
@Override
public boolean othersInsertsAreVisible(int type) throws SQLException
{
logger.debug(
"public boolean othersInsertsAreVisible(int type)");
return false;
}
@Override
public boolean updatesAreDetected(int type) throws SQLException
{
logger.debug(
"public boolean updatesAreDetected(int type)");
return false;
}
@Override
public boolean deletesAreDetected(int type) throws SQLException
{
logger.debug(
"public boolean deletesAreDetected(int type)");
return false;
}
@Override
public boolean insertsAreDetected(int type) throws SQLException
{
logger.debug(
"public boolean insertsAreDetected(int type)");
return false;
}
@Override
public boolean supportsBatchUpdates() throws SQLException
{
logger.debug("public boolean supportsBatchUpdates()");
return true;
}
@Override
public ResultSet getUDTs(String catalog, String schemaPattern,
String typeNamePattern, int[] types)
throws SQLException
{
logger.debug(
"public ResultSet getUDTs(String catalog, "
+ "String schemaPattern,String typeNamePattern, int[] types)");
// We don't user-defined types, so return an empty result set
Statement statement = connection.createStatement();
return new SnowflakeDatabaseMetaDataResultSet(
Arrays.asList("TYPE_CAT", "TYPE_SCHEM", "TYPE_NAME", "CLASS_NAME",
"DATA_TYPE", "REMARKS", "BASE_TYPE"),
Arrays.asList("TEXT", "TEXT", "TEXT", "TEXT", "INTEGER",
"TEXT", "SHORT"),
Arrays.asList(Types.VARCHAR, Types.VARCHAR, Types.VARCHAR,
Types.VARCHAR, Types.INTEGER, Types.VARCHAR, Types.SMALLINT),
new Object[][]
{
}, statement);
}
@Override
public Connection getConnection() throws SQLException
{
logger.debug("public Connection getConnection()");
return connection;
}
@Override
public boolean supportsSavepoints() throws SQLException
{
logger.debug("public boolean supportsSavepoints()");
return false;
}
@Override
public boolean supportsNamedParameters() throws SQLException
{
logger.debug(
"public boolean supportsNamedParameters()");
return false;
}
@Override
public boolean supportsMultipleOpenResults() throws SQLException
{
logger.debug(
"public boolean supportsMultipleOpenResults()");
return false;
}
@Override
public boolean supportsGetGeneratedKeys() throws SQLException
{
logger.debug(
"public boolean supportsGetGeneratedKeys()");
return false;
}
@Override
public ResultSet getSuperTypes(String catalog, String schemaPattern,
String typeNamePattern) throws SQLException
{
logger.debug(
"public ResultSet getSuperTypes(String catalog, "
+ "String schemaPattern,String typeNamePattern)");
throw new SQLFeatureNotSupportedException();
}
@Override
public ResultSet getSuperTables(String catalog, String schemaPattern,
String tableNamePattern) throws SQLException
{
logger.debug(
"public ResultSet getSuperTables(String catalog, "
+ "String schemaPattern,String tableNamePattern)");
throw new SQLFeatureNotSupportedException();
}
@Override
public ResultSet getAttributes(String catalog, String schemaPattern,
String typeNamePattern,
String attributeNamePattern)
throws SQLException
{
logger.debug(
"public ResultSet getAttributes(String catalog, String "
+ "schemaPattern,"
+ "String typeNamePattern,String attributeNamePattern)");
throw new SQLFeatureNotSupportedException();
}
@Override
public boolean supportsResultSetHoldability(int holdability)
throws SQLException
{
logger.debug(
"public boolean supportsResultSetHoldability(int holdability)");
return false;
}
@Override
public int getResultSetHoldability() throws SQLException
{
logger.debug("public int getResultSetHoldability()");
throw new SQLFeatureNotSupportedException();
}
@Override
public int getDatabaseMajorVersion() throws SQLException
{
logger.debug("public int getDatabaseMajorVersion()");
return ((SnowflakeConnectionV1)connection).getDatabaseMajorVersion();
}
@Override
public int getDatabaseMinorVersion() throws SQLException
{
logger.debug("public int getDatabaseMinorVersion()");
return ((SnowflakeConnectionV1)connection).getDatabaseMinorVersion();
}
@Override
public int getJDBCMajorVersion() throws SQLException
{
logger.debug("public int getJDBCMajorVersion()");
return Integer.parseInt(JDBCVersion.split("\\.", 2)[0]);
}
@Override
public int getJDBCMinorVersion() throws SQLException
{
logger.debug("public int getJDBCMinorVersion()");
return Integer.parseInt(JDBCVersion.split("\\.", 2)[1]);
}
@Override
public int getSQLStateType() throws SQLException
{
logger.debug("public int getSQLStateType()");
throw new SQLFeatureNotSupportedException();
}
@Override
public boolean locatorsUpdateCopy() throws SQLException
{
logger.debug("public boolean locatorsUpdateCopy()");
throw new SQLFeatureNotSupportedException();
}
@Override
public boolean supportsStatementPooling() throws SQLException
{
logger.debug(
"public boolean supportsStatementPooling()");
return false;
}
@Override
public RowIdLifetime getRowIdLifetime() throws SQLException
{
logger.debug("public RowIdLifetime getRowIdLifetime()");
throw new SQLFeatureNotSupportedException();
}
@Override
public ResultSet getSchemas(String catalog, String schemaPattern)
throws SQLException
{
logger.debug(
"public ResultSet getSchemas(String catalog={}, String "
+ "schemaPattern={})",
new Object[]{catalog, schemaPattern});
// try to determine if to use session database and schema
if (catalog == null && schemaPattern == null && metadataRequestUseConnectionCtx)
{
catalog = session.getDatabase();
schemaPattern = session.getSchema();
}
final Pattern compiledSchemaPattern = Wildcard.toRegexPattern(schemaPattern, true);
String showSchemas = "show /* JDBC:DatabaseMetaData.getSchemas() */ schemas";
Statement statement = connection.createStatement();
// only add pattern if it is not empty and not matching all character.
if (schemaPattern != null && !schemaPattern.isEmpty()
&& !schemaPattern.trim().equals("%")
&& !schemaPattern.trim().equals(".*"))
{
showSchemas += " like '" + schemaPattern + "'";
}
if (catalog == null)
{
showSchemas += " in account";
}
else if (catalog.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_SCHEMAS, statement);
}
else
{
showSchemas += " in database \"" + catalog + "\"";
}
logger.info("sql command to get schemas metadata: {}",
showSchemas);
ResultSet resultSet = executeAndReturnEmptyResultIfNotFound(statement, showSchemas, GET_SCHEMAS);
return new SnowflakeDatabaseMetaDataResultSet(GET_SCHEMAS, resultSet, statement)
{
public boolean next() throws SQLException
{
logger.debug("public boolean next()");
// iterate throw the show table result until we find an entry
// that matches the table name
while (showObjectResultSet.next())
{
String schemaName = showObjectResultSet.getString(2);
String dbName = showObjectResultSet.getString(5);
if (compiledSchemaPattern == null
|| compiledSchemaPattern.matcher(schemaName).matches())
{
nextRow[0] = schemaName;
nextRow[1] = dbName;
return true;
}
}
statement.close();
statement = null;
return false;
}
};
}
@Override
public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException
{
logger.debug(
"public boolean supportsStoredFunctionsUsingCallSyntax()");
return false;
}
@Override
public boolean autoCommitFailureClosesAllResultSets() throws SQLException
{
logger.debug(
"public boolean autoCommitFailureClosesAllResultSets()");
throw new SQLFeatureNotSupportedException();
}
@Override
public ResultSet getClientInfoProperties() throws SQLException
{
logger.debug(
"public ResultSet getClientInfoProperties()");
throw new SQLFeatureNotSupportedException();
}
@Override
public ResultSet getFunctions(String catalog, String schemaPattern,
String functionNamePattern) throws SQLException
{
Statement statement = connection.createStatement();
logger.debug("public ResultSet getFunctions(String catalog={}, String schemaPattern={}, " +
"String functionNamePattern={}",
catalog, schemaPattern, functionNamePattern);
if (catalog == null && schemaPattern == null && metadataRequestUseConnectionCtx)
{
catalog = session.getDatabase();
schemaPattern = session.getSchema();
}
final Pattern compiledSchemaPattern = Wildcard.toRegexPattern(schemaPattern, true);
final Pattern compiledFunctionPattern = Wildcard.toRegexPattern(functionNamePattern, true);
String showFunctionCommand = "show /* JDBC:DatabaseMetaData.getFunctions() */ functions";
if (functionNamePattern != null && !functionNamePattern.isEmpty() &&
!functionNamePattern.trim().equals("%") &&
!functionNamePattern.trim().equals(".*"))
{
showFunctionCommand += " like '" + functionNamePattern + "'";
}
if (catalog == null)
{
showFunctionCommand += " in account";
}
else if (catalog.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_FUNCTIONS, statement);
}
else
{
if (schemaPattern == null || Wildcard.isWildcardPatternStr(schemaPattern))
{
showFunctionCommand += " in database \"" + catalog + "\"";
}
else if (schemaPattern.isEmpty())
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(GET_FUNCTIONS, statement);
}
else
{
schemaPattern = schemaPattern.replace("\\", "");
showFunctionCommand += " in schema \"" + catalog + "\".\"" +
schemaPattern + "\"";
}
}
logger.info("sql command to get column metadata: {}",
showFunctionCommand);
ResultSet resultSet = executeAndReturnEmptyResultIfNotFound(statement, showFunctionCommand, GET_FUNCTIONS);
return new SnowflakeDatabaseMetaDataResultSet(GET_FUNCTIONS, resultSet, statement)
{
public boolean next() throws SQLException
{
logger.debug("public boolean next()");
// iterate throw the show table result until we find an entry
// that matches the table name
while (showObjectResultSet.next())
{
String catalogName = showObjectResultSet.getString(11);
String schemaName = showObjectResultSet.getString(3);
String functionName = showObjectResultSet.getString(2);
String remarks = showObjectResultSet.getString(10);
int functionType = ("Y".equals(showObjectResultSet.getString(12)) ?
functionReturnsTable : functionNoTable);
String specificName = functionName;
if ((compiledFunctionPattern == null
|| compiledFunctionPattern.matcher(functionName).matches())
&& (compiledSchemaPattern == null
|| compiledSchemaPattern.matcher(schemaName).matches()))
{
logger.debug(
"Found a matched function:" + schemaName
+ "." + functionName);
nextRow[0] = catalogName;
nextRow[1] = schemaName;
nextRow[2] = functionName;
nextRow[3] = remarks;
nextRow[4] = functionType;
nextRow[5] = specificName;
return true;
}
}
statement.close();
statement = null;
return false;
}
};
}
@Override
public ResultSet getFunctionColumns(String catalog, String schemaPattern,
String functionNamePattern,
String columnNamePattern)
throws SQLException
{
logger.debug(
"public ResultSet getFunctionColumns(String catalog, "
+ "String schemaPattern,String functionNamePattern,"
+ "String columnNamePattern)");
throw new SQLFeatureNotSupportedException();
}
//@Override
public ResultSet getPseudoColumns(String catalog, String schemaPattern,
String tableNamePattern,
String columnNamePattern)
throws SQLException
{
logger.debug(
"public ResultSet getPseudoColumns(String catalog, "
+ "String schemaPattern,String tableNamePattern,"
+ "String columnNamePattern)");
throw new SQLFeatureNotSupportedException();
}
//@Override
public boolean generatedKeyAlwaysReturned() throws SQLException
{
logger.debug(
"public boolean generatedKeyAlwaysReturned()");
throw new SQLFeatureNotSupportedException();
}
@Override
public T unwrap(
Class iface) throws SQLException
{
logger.debug("public T unwrap(Class iface)");
throw new SQLFeatureNotSupportedException();
}
@Override
public boolean isWrapperFor(
Class iface) throws SQLException
{
logger.debug(
"public boolean isWrapperFor(Class iface)");
throw new SQLFeatureNotSupportedException();
}
/**
* A small helper function to execute show command to get metadata,
* And if object does not exist, return an empty result set instead of
* throwing a SnowflakeSQLException
*/
private ResultSet executeAndReturnEmptyResultIfNotFound(Statement statement, String sql,
DBMetadataResultSetMetadata metadataType)
throws SQLException
{
ResultSet resultSet;
try
{
resultSet = statement.executeQuery(sql);
}
catch(SnowflakeSQLException e)
{
if (e.getSQLState().equals(SqlState.NO_DATA))
{
return SnowflakeDatabaseMetaDataResultSet.getEmptyResultSet(metadataType, statement);
}
else
{
throw e;
}
}
return resultSet;
}
}
