com.blazebit.persistence.integration.hibernate.CustomSubselectOneToManyLoader Maven / Gradle / Ivy
/*
* Copyright 2014 - 2021 Blazebit.
*
* 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.blazebit.persistence.integration.hibernate;
import com.blazebit.persistence.integration.hibernate.base.SubselectLoaderUtils;
import org.hibernate.MappingException;
import org.hibernate.engine.spi.LoadQueryInfluencers;
import org.hibernate.engine.spi.QueryParameters;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.loader.collection.SubselectOneToManyLoader;
import org.hibernate.persister.collection.QueryableCollection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Map;
import static com.blazebit.persistence.integration.hibernate.base.SubselectLoaderUtils.getPreparedStatementProxy;
/**
*
* @author Christian Beikov
* @since 1.2.0
*/
public class CustomSubselectOneToManyLoader extends SubselectOneToManyLoader {
private final int cteParameterCount;
public CustomSubselectOneToManyLoader(QueryableCollection persister, String subquery, java.util.Collection entityKeys, QueryParameters queryParameters, Map namedParameterLocMap, SessionFactoryImplementor factory, LoadQueryInfluencers loadQueryInfluencers) throws MappingException {
super(persister, subquery, entityKeys, queryParameters, namedParameterLocMap, factory, loadQueryInfluencers);
String originalSql = queryParameters.getFilteredSQL();
if (originalSql.startsWith("with ")) {
StringBuilder sb = new StringBuilder(sql.length() + originalSql.length());
cteParameterCount = SubselectLoaderUtils.applyCteAndCountParameters(originalSql, sb);
sb.append(sql);
this.sql = sb.toString();
} else {
cteParameterCount = 0;
}
}
@Override
protected int bindParameterValues(PreparedStatement statement, QueryParameters queryParameters, int startIndex, SharedSessionContractImplementor session) throws SQLException {
if (cteParameterCount > 0) {
statement = getPreparedStatementProxy(statement, queryParameters, cteParameterCount, 0);
}
return super.bindParameterValues(statement, queryParameters, startIndex, session);
}
}