oracle.toplink.essentials.internal.parsing.RangeDeclNode Maven / Gradle / Ivy
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the "License"). You may not use this file except
* in compliance with the License.
*
* You can obtain a copy of the license at
* glassfish/bootstrap/legal/CDDLv1.0.txt or
* https://glassfish.dev.java.net/public/CDDLv1.0.html.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* HEADER in each file and include the License file at
* glassfish/bootstrap/legal/CDDLv1.0.txt. If applicable,
* add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your
* own identifying information: Portions Copyright [yyyy]
* [name of copyright owner]
*/
// Copyright (c) 1998, 2007, Oracle. All rights reserved.
package oracle.toplink.essentials.internal.parsing;
import oracle.toplink.essentials.exceptions.EJBQLException;
/**
* INTERNAL
* Purpose: Represent a range identification variable
* declaration as part of the FROM clause FROM Order o.
*
Responsibilities:
* - Manage the abstract schema name range variable declaration.
*
*/
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 EJBQLException.unknownAbstractSchemaType2(
context.getQueryInfo(), getLine(), getColumn(), abstractSchemaName);
}
setType(type);
}
}