/*******************************************************************************
* Copyright (c) 2011, 2013 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Gordon Yorke - Initial development
*
******************************************************************************/
package org.eclipse.persistence.internal.jpa.querydef;
import java.lang.reflect.Constructor;
import javax.persistence.criteria.Selection;
import org.eclipse.persistence.internal.queries.ReportItem;
import org.eclipse.persistence.queries.ConstructorReportItem;
/**
* <p>
* <b>Purpose</b>: Contains the implementation of the Selection interface of the JPA
* criteria API. Specifically this class represents the Selection of a Constructor.
* <p>
* <b>Description</b>: The Selection is the expression describing what should be returned by the query.
* <p>
*
* @see javax.persistence.criteria Join
*
* @author gyorke
* @since EclipseLink 1.2
*/
public class ConstructorSelectionImpl extends CompoundSelectionImpl {
protected Constructor constructor;
protected Class[] constructorArgTypes;
public ConstructorSelectionImpl(Class javaType, Selection[] subSelections) {
super(javaType, subSelections);
}
public ConstructorReportItem translate(){
ConstructorReportItem item = new ConstructorReportItem(this.getAlias());
item.setResultType(this.getJavaType());
item.setConstructor(constructor);
for(Selection selection : this.getCompoundSelectionItems()){
if (((SelectionImpl)selection).isCompoundSelection()){
item.addItem(((ConstructorSelectionImpl)selection).translate());
}else{
ReportItem reportItem = new ReportItem(item.getName()+item.getReportItems().size(),
((SelectionImpl)selection).getCurrentNode());
//bug: 297385 - set type here because the selection already knows the type
reportItem.setResultType(selection.getJavaType());
item.addItem(reportItem);
}
}
return item;
}
public boolean isConstructor(){
return true;
}
/**
* INTERNAL:
* Set the constructor.
*/
public void setConstructor(Constructor constructor){
this.constructor = constructor;
}
/**
* INTERNAL:
* Set the constructorArgTypes.
*/
public void setConstructorArgTypes(Class[] constructorArgTypes){
this.constructorArgTypes = constructorArgTypes;
}
public void findRootAndParameters(AbstractQueryImpl query){
for (Selection selection: getCompoundSelectionItems()){
((InternalSelection)selection).findRootAndParameters(query);
}
}
}