/******************************************************************************* | |
* Copyright (c) 1998, 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: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.internal.jpa.parsing; | |
import org.eclipse.persistence.exceptions.JPQLException; | |
/** | |
* INTERNAL | |
* <p><b>Purpose</b>: Represent a range identification variable | |
* declaration as part of the FROM clause FROM Order o. | |
* <p><b>Responsibilities</b>:<ul> | |
* <li> Manage the abstract schema name range variable declaration. | |
* </ul> | |
*/ | |
public class RangeDeclNode extends IdentificationVariableDeclNode { | |
private String abstractSchemaName; | |
/** */ | |
public String getAbstractSchemaName() { | |
return abstractSchemaName; | |
} | |
/** */ | |
public void setAbstractSchemaName(String name) { | |
abstractSchemaName = name; | |
} | |
/** | |
* INTERNAL | |
* Check for an unqualified field access. If abstractSchemaName does not | |
* define a valid abstract schema name treat it as unqualified field | |
* access. Then method qualifies the field access and use it as the path | |
* expression of a new join variable declaration node returned by the | |
* method. | |
*/ | |
public Node qualifyAttributeAccess(ParseTreeContext context) { | |
TypeHelper typeHelper = context.getTypeHelper(); | |
String name = abstractSchemaName; | |
if (typeHelper.resolveSchema(name) == null) { | |
// not a known abstract schema name => make it a join node with a | |
// qualified attribute access as path expression | |
context.unregisterVariable(getCanonicalVariableName()); | |
NodeFactory factory = context.getNodeFactory(); | |
Node path = (Node)factory.newQualifiedAttribute( | |
getLine(), getColumn(), context.getBaseVariable(), name); | |
return (Node)factory.newVariableDecl( | |
getLine(), getColumn(), path, getVariableName()); | |
} | |
return this; | |
} | |
/** | |
* INTERNAL | |
* Validate node and calculate its type. | |
*/ | |
public void validate(ParseTreeContext context) { | |
super.validate(context); | |
TypeHelper typeHelper = context.getTypeHelper(); | |
Object type = typeHelper.resolveSchema(abstractSchemaName); | |
if (type == null) { | |
throw JPQLException.entityTypeNotFound2( | |
context.getQueryInfo(), getLine(), getColumn(), abstractSchemaName); | |
} | |
setType(type); | |
} | |
} |