org.apache.lucene.store.jdbc.dialect.MySQLDialect Maven / Gradle / Ivy
/*
* Copyright 2004-2009 the original author or authors.
*
* 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 org.apache.lucene.store.jdbc.dialect;
/**
* A MySQL dialect.
*
* @author kimchy
*/
public class MySQLDialect extends Dialect {
/**
* MySQL requires quoting the blob column with connector J 3.1 when using emulateLocators=true.
*/
public String openBlobSelectQuote() {
return "'";
}
/**
* MySQL requires quoting the blob column with connector J 3.1 when using emulateLocators=true.
*/
public String closeBlobSelectQuote() {
return "'";
}
public char closeQuote() {
return '`';
}
public char openQuote() {
return '`';
}
/**
* MySQL supports select ... for update.
*/
public boolean supportsForUpdate() {
return true;
}
/**
* MySQL supports if exists before the table name.
*/
public boolean supportsIfExistsBeforeTableName() {
return true;
}
/**
* MySQL supports current timestamp selection.
*/
public boolean supportsCurrentTimestampSelection() {
return true;
}
public boolean isCurrentTimestampSelectStringCallable() {
return false;
}
public String getCurrentTimestampSelectString() {
return "select now()";
}
public String getVarcharType(int length) {
return "varchar(" + length + ")";
}
public String getBlobType(long length) {
return "longblob";
}
public String getNumberType() {
return "integer";
}
public String getTimestampType() {
return "datetime";
}
public String getCurrentTimestampFunction() {
return "current_timestamp";
}
public String getBitType() {
return "bit";
}
}