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An JDBC datasource implementation.
/*
* Copyright 1999-2018 Alibaba Group Holding Ltd.
*
* Licensed 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 com.alibaba.druid.sql.dialect.db2.parser;
import com.alibaba.druid.sql.ast.SQLName;
import com.alibaba.druid.sql.ast.SQLPartitionBy;
import com.alibaba.druid.sql.ast.SQLPartitionByHash;
import com.alibaba.druid.sql.ast.statement.*;
import com.alibaba.druid.sql.dialect.db2.ast.stmt.DB2CreateTableStatement;
import com.alibaba.druid.sql.parser.ParserException;
import com.alibaba.druid.sql.parser.SQLCreateTableParser;
import com.alibaba.druid.sql.parser.SQLExprParser;
import com.alibaba.druid.sql.parser.Token;
import com.alibaba.druid.util.FnvHash;
import com.alibaba.druid.util.JdbcConstants;
public class DB2CreateTableParser extends SQLCreateTableParser {
public DB2CreateTableParser(String sql) {
super(new DB2ExprParser(sql));
}
public DB2CreateTableParser(SQLExprParser exprParser) {
super(exprParser);
}
public SQLCreateTableStatement parseCreateTable(boolean acceptCreate) {
DB2CreateTableStatement createTable = newCreateStatement();
if (acceptCreate) {
if (lexer.hasComment() && lexer.isKeepComments()) {
createTable.addBeforeComment(lexer.readAndResetComments());
}
accept(Token.CREATE);
}
if (lexer.identifierEquals("GLOBAL")) {
lexer.nextToken();
if (lexer.identifierEquals("TEMPORARY")) {
lexer.nextToken();
createTable.setType(SQLCreateTableStatement.Type.GLOBAL_TEMPORARY);
} else {
throw new ParserException("syntax error " + lexer.info());
}
} else if (lexer.token() == Token.IDENTIFIER && lexer.stringVal().equalsIgnoreCase("LOCAL")) {
lexer.nextToken();
if (lexer.token() == Token.IDENTIFIER && lexer.stringVal().equalsIgnoreCase("TEMPORAY")) {
lexer.nextToken();
createTable.setType(SQLCreateTableStatement.Type.LOCAL_TEMPORARY);
} else {
throw new ParserException("syntax error. " + lexer.info());
}
}
accept(Token.TABLE);
createTable.setName(this.exprParser.name());
if (lexer.token() == Token.LPAREN) {
lexer.nextToken();
for (; ; ) {
Token token = lexer.token();
if (token == Token.IDENTIFIER
&& lexer.stringVal().equalsIgnoreCase("SUPPLEMENTAL")
&& JdbcConstants.ORACLE.equals(dbType)) {
this.parseCreateTableSupplementalLogingProps(createTable);
} else if (token == Token.IDENTIFIER //
|| token == Token.LITERAL_ALIAS) {
SQLColumnDefinition column = this.exprParser.parseColumn();
createTable.getTableElementList().add(column);
} else if (token == Token.PRIMARY //
|| token == Token.UNIQUE //
|| token == Token.CHECK //
|| token == Token.CONSTRAINT
|| token == Token.FOREIGN) {
SQLConstraint constraint = this.exprParser.parseConstaint();
constraint.setParent(createTable);
createTable.getTableElementList().add((SQLTableElement) constraint);
} else if (token == Token.TABLESPACE) {
throw new ParserException("TODO " + lexer.info());
} else {
SQLColumnDefinition column = this.exprParser.parseColumn();
createTable.getTableElementList().add(column);
}
if (lexer.token() == Token.COMMA) {
lexer.nextToken();
if (lexer.token() == Token.RPAREN) { // compatible for sql server
break;
}
continue;
}
break;
}
accept(Token.RPAREN);
if (lexer.identifierEquals("INHERITS")) {
lexer.nextToken();
accept(Token.LPAREN);
SQLName inherits = this.exprParser.name();
createTable.setInherits(new SQLExprTableSource(inherits));
accept(Token.RPAREN);
}
}
if (lexer.token() == Token.AS) {
lexer.nextToken();
SQLSelect select = this.createSQLSelectParser().select();
createTable.setSelect(select);
}
for (;;) {
if (lexer.identifierEquals(FnvHash.Constants.DATA)) {
lexer.nextToken();
acceptIdentifier("CAPTURE");
if (lexer.identifierEquals(FnvHash.Constants.NONE)) {
lexer.nextToken();
createTable.setDataCaptureNone(true);
continue;
}
throw new ParserException("TODO " + lexer.info());
} else if (lexer.token() == Token.IN) {
lexer.nextToken();
if (lexer.token() == Token.DATABASE) {
lexer.nextToken();
SQLName database = this.exprParser.name();
createTable.setDatabase(database);
} else if (lexer.identifierEquals("tablespace")) {
throw new ParserException("TODO " + lexer.info());
} else {
SQLName tablespace = this.exprParser.name();
createTable.setTablespace(tablespace);
}
continue;
} else if (lexer.identifierEquals(FnvHash.Constants.PARTITIONING)) {
SQLPartitionByHash partitionBy = new SQLPartitionByHash();
lexer.nextToken();
accept(Token.KEY);
accept(Token.LPAREN);
this.exprParser.exprList(partitionBy.getColumns(), partitionBy);
accept(Token.RPAREN);
accept(Token.USING);
acceptIdentifier("HASHING");
createTable.setPartitioning(partitionBy);
continue;
} else if (lexer.identifierEquals(FnvHash.Constants.VALIDPROC)) {
lexer.nextToken();
SQLName validproc = this.exprParser.name();
createTable.setValidproc(validproc);
continue;
} else if (lexer.identifierEquals(FnvHash.Constants.COMPRESS)) {
lexer.nextToken();
createTable.setCompress(true);
if (lexer.identifierEquals(FnvHash.Constants.YES)) {
lexer.nextToken();
}
continue;
} else if (lexer.token() == Token.INDEX) {
lexer.nextToken();
accept(Token.IN);
SQLName indexIn = this.exprParser.name();
createTable.setIndexIn(indexIn);
continue;
}
break;
}
return createTable;
}
protected DB2CreateTableStatement newCreateStatement() {
return new DB2CreateTableStatement();
}
}