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/*
* Copyright (c) 1998-2018 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.amber.field;
import com.caucho.amber.expr.AmberExpr;
import com.caucho.amber.expr.DependentEntityOneToOneExpr;
import com.caucho.amber.expr.PathExpr;
import com.caucho.amber.manager.AmberPersistenceUnit;
import com.caucho.amber.query.QueryParser;
import com.caucho.amber.table.*;
import com.caucho.amber.type.*;
import com.caucho.config.ConfigException;
import com.caucho.java.JavaWriter;
import com.caucho.util.CharBuffer;
import com.caucho.util.L10N;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.logging.Logger;
import javax.persistence.CascadeType;
/**
* Represents the dependent side of a one-to-one bidirectional link.
*/
public class DependentEntityOneToOneField extends CascadableField {
private static final L10N L = new L10N(DependentEntityOneToOneField.class);
private static final Logger log
= Logger.getLogger(DependentEntityOneToOneField.class.getName());
private ManyToOneField _targetField;
private long _targetLoadIndex;
private boolean _isCascadeDelete;
public DependentEntityOneToOneField(EntityType relatedType,
String name)
throws ConfigException
{
super(relatedType, name, null);
}
public DependentEntityOneToOneField(EntityType relatedType,
String name,
CascadeType[] cascadeTypes)
throws ConfigException
{
super(relatedType, name, cascadeTypes);
}
/**
* Sets the target field.
*/
public void setTargetField(ManyToOneField targetField)
{
_targetField = targetField;
}
/**
* Sets the target field.
*/
public ManyToOneField getTargetField()
{
return _targetField;
}
/**
* Gets the target load index.
*/
public long getTargetLoadIndex()
{
return _targetLoadIndex;
}
/**
* Returns the source type as
* entity or mapped-superclass.
*/
public EntityType getEntitySourceType()
{
return (EntityType) getSourceType();
}
/**
* Returns the target type as
* entity or mapped-superclass.
*/
public EntityType getEntityTargetType()
{
return (EntityType) _targetField.getSourceType();
}
/**
* Returns the target type.
*/
public AmberType getType()
{
return getEntityTargetType();
}
/**
* Returns the foreign type.
*/
public String getForeignTypeName()
{
//return ((KeyColumn) getColumn()).getType().getForeignTypeName();
return getEntityTargetType().getForeignTypeName();
}
/**
* Sets the column.
*/
public void setColumn(AmberColumn column)
{
throw new IllegalStateException();
}
/**
* Sets the cascade-delete property.
*/
public void setCascadeDelete(boolean isCascadeDelete)
{
_isCascadeDelete = isCascadeDelete;
}
/**
* Returns the cascade-delete property.
*/
public boolean isCascadeDelete()
{
return _isCascadeDelete;
}
public void init()
throws ConfigException
{
super.init();
_targetLoadIndex = getEntitySourceType().nextLoadGroupIndex();
}
/**
* Creates the expression for the field.
*/
public AmberExpr createExpr(QueryParser parser, PathExpr parent)
{
return new DependentEntityOneToOneExpr(parent,
_targetField.getLinkColumns());
}
/**
* Gets the column corresponding to the target field.
*/
public ForeignColumn getColumn(IdField targetField)
{
/*
EntityColumn entityColumn = (EntityColumn) getColumn();
ArrayList columns = entityColumn.getColumns();
Id id = getEntityTargetType().getId();
ArrayList keys = id.getKeys();
for (int i = 0; i < keys.size(); i++ ){
if (keys.get(i) == targetField)
return columns.get(i);
}
*/
return null;
}
/**
* Generates the flush check for this child.
*/
/*
public boolean generateFlushCheck(JavaWriter out)
throws IOException
{
// ejb/06bi
if (! getEntitySourceType().getPersistenceUnit().isJPA())
return false;
String getter = generateSuperGetter("this");
out.println("if (" + getter + " != null) {");
out.pushDepth();
out.println("com.caucho.amber.entity.EntityState state = ((com.caucho.amber.entity.Entity) " + getter + ").__caucho_getEntityState();");
// jpa/0s2d
out.println("if (__caucho_state.isTransactional() && ! state.isManaged())");
String errorString = ("(\"amber flush: unable to flush " +
getEntitySourceType().getName() + "[\" + __caucho_getPrimaryKey() + \"] "+
"with non-managed relationship one-to-one to "+
getEntityTargetType().getName() + " with state='\" + __caucho_state + \"'\")");
// jpa/0o37 (tck)
out.println(" throw new IllegalStateException" + errorString + ";");
out.popDepth();
out.println("}");
return true;
}
*/
/**
* Generates any prologue.
*/
public void generatePrologue(JavaWriter out, HashSet