001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * // Copyright (c) 1998, 2007, Oracle. All rights reserved.
005: *
006: *
007: * The contents of this file are subject to the terms of either the GNU
008: * General Public License Version 2 only ("GPL") or the Common Development
009: * and Distribution License("CDDL") (collectively, the "License"). You
010: * may not use this file except in compliance with the License. You can obtain
011: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
012: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
013: * language governing permissions and limitations under the License.
014: *
015: * When distributing the software, include this License Header Notice in each
016: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
017: * Sun designates this particular file as subject to the "Classpath" exception
018: * as provided by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the License
020: * Header, with the fields enclosed by brackets [] replaced by your own
021: * identifying information: "Portions Copyrighted [year]
022: * [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * If you wish your version of this file to be governed by only the CDDL or
027: * only the GPL Version 2, indicate your decision by adding "[Contributor]
028: * elects to include this software in this distribution under the [CDDL or GPL
029: * Version 2] license." If you don't indicate a single choice of license, a
030: * recipient has the option to distribute your version of this file under
031: * either the CDDL, the GPL Version 2 or to extend the choice of license to
032: * its licensees as provided above. However, if you add GPL Version 2 code
033: * and therefore, elected the GPL Version 2 license, then the option applies
034: * only if the new code is made subject to such option by the copyright
035: * holder.
036: */
037: package oracle.toplink.essentials.internal.parsing;
038:
039: import oracle.toplink.essentials.exceptions.EJBQLException;
040:
041: /**
042: * INTERNAL
043: * <p><b>Purpose</b>: Represent a range identification variable
044: * declaration as part of the FROM clause FROM Order o.
045: * <p><b>Responsibilities</b>:<ul>
046: * <li> Manage the abstract schema name range variable declaration.
047: * </ul>
048: */
049: public class RangeDeclNode extends IdentificationVariableDeclNode {
050:
051: private String abstractSchemaName;
052:
053: /** */
054: public String getAbstractSchemaName() {
055: return abstractSchemaName;
056: }
057:
058: /** */
059: public void setAbstractSchemaName(String name) {
060: abstractSchemaName = name;
061: }
062:
063: /**
064: * INTERNAL
065: * Check for an unqualified field access. If abstractSchemaName does not
066: * define a valid abstract schema name treat it as unqualified field
067: * access. Then method qualifies the field access and use it as the path
068: * expression of a new join variable declaration node returned by the
069: * method.
070: */
071: public Node qualifyAttributeAccess(ParseTreeContext context) {
072: TypeHelper typeHelper = context.getTypeHelper();
073: String name = abstractSchemaName;
074: if (typeHelper.resolveSchema(name) == null) {
075: // not a known abstract schema name => make it a join node with a
076: // qualified attribute access as path expression
077: context.unregisterVariable(getCanonicalVariableName());
078: NodeFactory factory = context.getNodeFactory();
079: Node path = (Node) factory.newQualifiedAttribute(getLine(),
080: getColumn(), context.getBaseVariable(), name);
081: return (Node) factory.newVariableDecl(getLine(),
082: getColumn(), path, getVariableName());
083: }
084: return this ;
085: }
086:
087: /**
088: * INTERNAL
089: * Validate node and calculate its type.
090: */
091: public void validate(ParseTreeContext context) {
092: super .validate(context);
093: TypeHelper typeHelper = context.getTypeHelper();
094: Object type = typeHelper.resolveSchema(abstractSchemaName);
095: if (type == null) {
096: throw EJBQLException.unknownAbstractSchemaType2(context
097: .getQueryInfo(), getLine(), getColumn(),
098: abstractSchemaName);
099: }
100: setType(type);
101: }
102: }
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