001: /*
002: * $Header: /export/home/cvsroot/MyPersonalizerRepository/MyPersonalizer/Subsystems/Kernel/Sources/es/udc/mypersonalizer/kernel/model/annotators/AbstractAnnotatorVisitor.java,v 1.1.1.1 2004/03/25 12:08:37 fbellas Exp $
003: * $Revision: 1.1.1.1 $
004: * $Date: 2004/03/25 12:08:37 $
005: *
006: * =============================================================================
007: *
008: * Copyright (c) 2003, The MyPersonalizer Development Group
009: * (http://www.tic.udc.es/~fbellas/mypersonalizer/index.html) at
010: * University Of A Coruņa
011: * All rights reserved.
012: *
013: * Redistribution and use in source and binary forms, with or without
014: * modification, are permitted provided that the following conditions are met:
015: *
016: * - Redistributions of source code must retain the above copyright notice,
017: * this list of conditions and the following disclaimer.
018: *
019: * - Redistributions in binary form must reproduce the above copyright notice,
020: * this list of conditions and the following disclaimer in the documentation
021: * and/or other materials provided with the distribution.
022: *
023: * - Neither the name of the University Of A Coruņa nor the names of its
024: * contributors may be used to endorse or promote products derived from
025: * this software without specific prior written permission.
026: *
027: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
028: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
029: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
030: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
031: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
032: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
033: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
034: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
035: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
036: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
037: * POSSIBILITY OF SUCH DAMAGE.
038: *
039: */
040:
041: package es.udc.mypersonalizer.kernel.model.annotators;
042:
043: import java.util.Iterator;
044:
045: import es.udc.mypersonalizer.kernel.model.metainfo.MetaCompoundProperty;
046: import es.udc.mypersonalizer.kernel.model.metainfo.MetaProperty;
047: import es.udc.mypersonalizer.kernel.model.metainfo.MetaSimpleProperty;
048: import es.udc.mypersonalizer.kernel.util.exceptions.InternalErrorException;
049: import es.udc.mypersonalizer.kernel.util.exceptions.VisitorException;
050:
051: /**
052: * Abstract implementation of an annotator visitor.
053: * <p>
054: * This implementation traverses the metaproperty tree in depth order,
055: * calling the single metaproperty annotation methods for each metaproperty.
056: *
057: * @author Abel Muinho
058: * @since 1.0
059: */
060: public abstract class AbstractAnnotatorVisitor implements
061: AnnotatorVisitor {
062: private AnnotationIndex index;
063: private String currentScope = "";
064:
065: public void setIndex(AnnotationIndex index) {
066: this .index = index;
067: }
068:
069: public Object visitMetaSimpleProperty(
070: MetaSimpleProperty metaProperty) throws VisitorException {
071:
072: String newScope = (currentScope.equals("")) ? metaProperty
073: .getSimpleName() : currentScope + "."
074: + metaProperty.getSimpleName();
075: Annotations externalAnnotations = index
076: .getAnnotationsFor(newScope);
077:
078: try {
079: annotate(metaProperty, externalAnnotations);
080: } catch (InternalErrorException e) {
081: throw new VisitorException(e);
082: }
083: return null;
084: }
085:
086: /* (non-Javadoc)
087: * @see es.udc.mypersonalizer.kernel.model.metainfo.MetaProperty.Visitor#visitMetaCompoundProperty(es.udc.mypersonalizer.kernel.model.metainfo.MetaCompoundProperty)
088: */
089: public Object visitMetaCompoundProperty(
090: MetaCompoundProperty metaProperty) throws VisitorException {
091:
092: String savedScope = currentScope;
093: String newScope = (currentScope.equals("")) ? metaProperty
094: .getSimpleName() : currentScope + "."
095: + metaProperty.getSimpleName();
096: /* Annotate this MetaProperty. */
097: Annotations externalAnnotations = index
098: .getAnnotationsFor(newScope);
099: try {
100: annotate(metaProperty, externalAnnotations);
101: } catch (InternalErrorException e) {
102: throw new VisitorException(e);
103: }
104:
105: /* Descend the tree. */
106: currentScope = newScope;
107: Iterator it = metaProperty.getMetaProperties();
108: while (it.hasNext()) {
109: MetaProperty next = (MetaProperty) it.next();
110: next.accept(this );
111: }
112: /* Done descending, go up again. */
113: currentScope = savedScope;
114: return null;
115: }
116:
117: }
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