com.querydsl.jpa.support.QDerbyDialect Maven / Gradle / Ivy
/*
* Copyright 2015, The Querydsl Team (http://www.querydsl.com/team)
*
* 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.querydsl.jpa.support;
import java.util.Arrays;
import java.util.List;
import org.hibernate.dialect.DerbyDialect;
import org.hibernate.dialect.function.CastFunction;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.type.Type;
import com.querydsl.core.types.Ops;
import com.querydsl.sql.DerbyTemplates;
import com.querydsl.sql.SQLTemplates;
/**
* {@code QDerbyDialect} extends {@code DerbyDialect} with additional functions
*/
public class QDerbyDialect extends DerbyDialect {
private static final CastFunction castFunction = new CastFunction() {
@Override
public String render(Type columnType, List args, SessionFactoryImplementor factory) {
if (args.get(1).equals("string")) {
return super.render(columnType, Arrays.asList("char(" + args.get(0) + ")", args.get(1)), factory);
} else {
return super.render(columnType, args, factory);
}
}
};
public QDerbyDialect() {
SQLTemplates templates = DerbyTemplates.DEFAULT;
getFunctions().putAll(DialectSupport.createFunctions(templates));
registerFunction("concat", DialectSupport.createFunction(templates, Ops.CONCAT));
registerFunction("cast", castFunction);
}
}