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com.clickhouse.jdbc.parser.ClickHouseSqlStatement Maven / Gradle / Ivy
package com.clickhouse.jdbc.parser;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.Map.Entry;
public class ClickHouseSqlStatement {
public static final String DEFAULT_DATABASE = "system";
public static final String DEFAULT_TABLE = "unknown";
public static final String KEYWORD_DATABASE = "DATABASE";
public static final String KEYWORD_EXISTS = "EXISTS";
public static final String KEYWORD_FORMAT = "FORMAT";
public static final String KEYWORD_REPLACE = "REPLACE";
public static final String KEYWORD_TOTALS = "TOTALS";
public static final String KEYWORD_VALUES = "VALUES";
public static final String KEYWORD_TABLE_COLUMNS_START = "ColumnsStart";
public static final String KEYWORD_TABLE_COLUMNS_END = "ColumnsEnd";
public static final String KEYWORD_VALUES_START = "ValuesStart";
public static final String KEYWORD_VALUES_END = "ValuesEnd";
private final String sql;
private final StatementType stmtType;
private final String cluster;
private final String database;
private final String table;
private final String input;
private final String format;
private final String outfile;
private final List parameters;
private final Map positions;
private final Map settings;
private final Set tempTables;
public ClickHouseSqlStatement(String sql) {
this(sql, StatementType.UNKNOWN, null, null, null, null, null, null, null, null, null, null);
}
public ClickHouseSqlStatement(String sql, StatementType stmtType) {
this(sql, stmtType, null, null, null, null, null, null, null, null, null, null);
}
public ClickHouseSqlStatement(String sql, StatementType stmtType, String cluster, String database, String table,
String input, String format, String outfile, List parameters, Map positions,
Map settings, Set tempTables) {
this.sql = sql;
this.stmtType = stmtType;
this.cluster = cluster;
this.database = database;
this.table = table == null || table.isEmpty() ? DEFAULT_TABLE : table;
this.input = input;
this.format = format;
this.outfile = outfile;
if (parameters != null && !parameters.isEmpty()) {
this.parameters = Collections.unmodifiableList(parameters);
} else {
this.parameters = Collections.emptyList();
}
if (positions != null && !positions.isEmpty()) {
Map p = new HashMap<>();
for (Entry e : positions.entrySet()) {
String keyword = e.getKey();
Integer position = e.getValue();
if (keyword != null && position != null) {
p.put(keyword, position);
}
}
this.positions = Collections.unmodifiableMap(p);
} else {
this.positions = Collections.emptyMap();
}
if (settings != null && !settings.isEmpty()) {
Map s = new LinkedHashMap<>();
for (Entry e : settings.entrySet()) {
String key = e.getKey();
String value = e.getValue();
if (key != null && value != null) {
s.put(key, String.valueOf(e.getValue()));
}
}
this.settings = Collections.unmodifiableMap(s);
} else {
this.settings = Collections.emptyMap();
}
if (tempTables != null && !tempTables.isEmpty()) {
Set s = new LinkedHashSet<>();
s.addAll(tempTables);
this.tempTables = Collections.unmodifiableSet(s);
} else {
this.tempTables = Collections.emptySet();
}
}
public String getSQL() {
return this.sql;
}
public boolean isRecognized() {
return stmtType != StatementType.UNKNOWN;
}
public boolean isDDL() {
return this.stmtType.getLanguageType() == LanguageType.DDL;
}
public boolean isDML() {
return this.stmtType.getLanguageType() == LanguageType.DML;
}
public boolean isQuery() {
return this.stmtType.getOperationType() == OperationType.READ && !this.hasOutfile();
}
public boolean isMutation() {
return this.stmtType.getOperationType() == OperationType.WRITE || this.hasOutfile();
}
public boolean isIdemponent() {
boolean result = this.stmtType.isIdempotent() && !this.hasOutfile();
if (!result) { // try harder
switch (this.stmtType) {
case ATTACH:
case CREATE:
case DETACH:
case DROP:
result = positions.containsKey(KEYWORD_EXISTS) || positions.containsKey(KEYWORD_REPLACE);
break;
default:
break;
}
}
return result;
}
public LanguageType getLanguageType() {
return this.stmtType.getLanguageType();
}
public OperationType getOperationType() {
return this.stmtType.getOperationType();
}
public StatementType getStatementType() {
return this.stmtType;
}
public String getCluster() {
return this.cluster;
}
public String getDatabase() {
return this.database;
}
public String getDatabaseOrDefault(String database) {
return this.database == null ? (database == null ? DEFAULT_DATABASE : database) : this.database;
}
public String getTable() {
return this.table;
}
public String getInput() {
return this.input;
}
public String getFormat() {
return this.format;
}
public String getOutfile() {
return this.outfile;
}
public String getContentBetweenKeywords(String startKeyword, String endKeyword) {
return getContentBetweenKeywords(startKeyword, endKeyword, 0);
}
public String getContentBetweenKeywords(String startKeyword, String endKeyword, int startOffset) {
if (startOffset < 0) {
startOffset = 0;
}
Integer startPos = positions.get(startKeyword);
Integer endPos = positions.get(endKeyword);
String content = "";
if (startPos != null && endPos != null && startPos + startOffset < endPos) {
content = sql.substring(startPos + startOffset, endPos);
}
return content;
}
public boolean containsKeyword(String keyword) {
if (keyword == null || keyword.isEmpty()) {
return false;
}
return positions.containsKey(keyword.toUpperCase(Locale.ROOT));
}
public boolean hasFormat() {
return this.format != null && !this.format.isEmpty();
}
public boolean hasInput() {
return this.input != null && !this.input.isEmpty();
}
public boolean hasOutfile() {
return this.outfile != null && !this.outfile.isEmpty();
}
public boolean hasSettings() {
return !this.settings.isEmpty();
}
public boolean hasWithTotals() {
return this.positions.containsKey(KEYWORD_TOTALS);
}
public boolean hasValues() {
return this.positions.containsKey(KEYWORD_VALUES);
}
public boolean hasTempTable() {
return !this.tempTables.isEmpty();
}
public List getParameters() {
return this.parameters;
}
public int getStartPosition(String keyword) {
int position = -1;
if (!this.positions.isEmpty() && keyword != null) {
Integer p = this.positions.get(keyword.toUpperCase(Locale.ROOT));
if (p != null) {
position = p.intValue();
}
}
return position;
}
public int getEndPosition(String keyword) {
int position = getStartPosition(keyword);
return position != -1 && keyword != null ? position + keyword.length() : position;
}
public Map getPositions() {
return this.positions;
}
public Map getSettings() {
return this.settings;
}
public Set getTempTables() {
return this.tempTables;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append('[').append(stmtType.name()).append(']').append(" cluster=").append(cluster).append(", database=")
.append(database).append(", table=").append(table).append(", input=").append(input).append(", format=")
.append(format).append(", outfile=").append(outfile).append(", parameters=").append(parameters)
.append(", positions=").append(positions).append(", settings=").append(settings).append(", tempTables=")
.append(settings).append("\nSQL:\n")
.append(sql);
return sb.toString();
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((sql == null) ? 0 : sql.hashCode());
result = prime * result + ((cluster == null) ? 0 : cluster.hashCode());
result = prime * result + ((database == null) ? 0 : database.hashCode());
result = prime * result + table.hashCode();
result = prime * result + ((input == null) ? 0 : input.hashCode());
result = prime * result + ((format == null) ? 0 : format.hashCode());
result = prime * result + ((outfile == null) ? 0 : outfile.hashCode());
result = prime * result + ((stmtType == null) ? 0 : stmtType.hashCode());
result = prime * result + parameters.hashCode();
result = prime * result + positions.hashCode();
result = prime * result + settings.hashCode();
result = prime * result + tempTables.hashCode();
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
ClickHouseSqlStatement other = (ClickHouseSqlStatement) obj;
return stmtType == other.stmtType && Objects.equals(sql, other.sql) && Objects.equals(cluster, other.cluster)
&& Objects.equals(database, other.database) && Objects.equals(table, other.table)
&& Objects.equals(input, other.input) && Objects.equals(format, other.format)
&& Objects.equals(outfile, other.outfile) && parameters.equals(other.parameters)
&& positions.equals(other.positions) && settings.equals(other.settings)
&& tempTables.equals(other.tempTables);
}
}
