/*
* Copyright (c) 1998-2011 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 Rodrigo Westrupp
*/
package com.caucho.amber.expr;
import com.caucho.amber.entity.Embeddable;
import com.caucho.amber.field.AmberField;
import com.caucho.amber.manager.AmberConnection;
import com.caucho.amber.query.FromItem;
import com.caucho.amber.query.QueryParser;
import com.caucho.amber.table.LinkColumns;
import com.caucho.amber.table.AmberTable;
import com.caucho.amber.type.EmbeddableType;
import com.caucho.amber.type.AmberType;
import com.caucho.util.CharBuffer;
import java.lang.reflect.Method;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
/**
* An embedded expression which should be loaded.
*/
public class LoadEmbeddedExpr extends LoadExpr {
LoadEmbeddedExpr(PathExpr expr)
{
super(expr);
}
/**
* Returns the embeddable type.
*/
public EmbeddableType getEmbeddableType()
{
return (EmbeddableType) getType();
}
/**
* Binds the expression as a select item.
*/
public AmberExpr bindSelect(QueryParser parser)
{
_fromItem = _expr.bindSubPath(parser);
if (_fromItem == null)
throw new NullPointerException(_expr.getClass().getName() + " " + _expr);
return this;
}
/**
* Returns the object for the expr.
*/
public Object getObject(AmberConnection aConn, ResultSet rs, int index)
throws SQLException
{
Embeddable embeddable = getEmbeddableType().createObject();
embeddable.__caucho_load(aConn, rs, index);
return embeddable;
}
/**
* Returns the object for the expr.
*/
public Object getCacheObject(AmberConnection aConn,
ResultSet rs,
int index)
throws SQLException
{
// XXX: needs to handle embeddable type caching.
return getObject(aConn, rs, index);
}
}