/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.openjpa.jdbc.kernel;
import java.sql.SQLException;
import org.apache.openjpa.jdbc.meta.ClassMapping;
import org.apache.openjpa.jdbc.sql.Result;
import org.apache.openjpa.jdbc.sql.Select;
import org.apache.openjpa.jdbc.sql.SelectExecutor;
import org.apache.openjpa.util.ProxyCalendar;
/**
* Object provider implementation wrapped around a {@link Select}.
*
* @author Abe White
* @nojavadoc
*/
public class InstanceResultObjectProvider
extends SelectResultObjectProvider {
private final ClassMapping _mapping;
/**
* Constructor.
*
* @param sel the select to execute
* @param mapping the mapping for the base class of the result objects
* @param store the store to delegate loading to
* @param fetch the fetch configuration, or null for default
*/
public InstanceResultObjectProvider(SelectExecutor sel,
ClassMapping mapping, JDBCStore store, JDBCFetchConfiguration fetch) {
super(sel, store, fetch);
_mapping = mapping;
}
public Object getResultObject()
throws SQLException {
Result res = getResult();
ClassMapping mapping = res.getBaseMapping();
if (mapping == null)
mapping = _mapping;
Object ret = res.load(mapping, getStore(), getFetchConfiguration());
if (ret != null && ret instanceof ProxyCalendar) {
ret = ((ProxyCalendar) ret).copy(ret);
}
return ret;
}
}