/*
* 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 Scott Ferguson
*/
package com.caucho.amber.expr;
import com.caucho.amber.query.FromItem;
import com.caucho.amber.query.QueryParser;
import com.caucho.amber.type.BeanType;
/**
* Represents an amber mapping query expression
*/
public interface PathExpr extends AmberExpr {
/**
* Returns the target type.
*/
public BeanType getTargetType();
/**
* Creates the expr from the path.
*/
public AmberExpr createField(QueryParser parser, String field);
/**
* Creates an array reference.
*/
public AmberExpr createArray(AmberExpr field);
/**
* Creates an id expression.
*/
public IdExpr createId(FromItem from);
/**
* Creates a load expression.
*/
public LoadExpr createLoad();
/**
* Binds the expression as a select item.
*/
public PathExpr bindSelect(QueryParser parser, String tableName);
/**
* Binds the expression as a select item.
*/
public FromItem bindSubPath(QueryParser parser);
/**
* Returns the from item
*/
public FromItem getChildFromItem();
}