| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.myfaces.extensions.scripting.jsf.annotation; |
| |
| |
| import org.apache.myfaces.extensions.scripting.core.api.AnnotationScanListener; |
| import org.apache.myfaces.extensions.scripting.jsf.annotation.purged.PurgedConverter; |
| |
| import javax.faces.application.Application; |
| import javax.faces.convert.FacesConverter; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * @author Werner Punz (latest modification by $Author$) |
| * @version $Revision$ $Date$ |
| */ |
| |
| public class ConverterImplementationListener extends MapEntityAnnotationScanner implements AnnotationScanListener |
| { |
| |
| private static final String PAR_VALUE = "value"; |
| private static final String PAR_DEFAULT = "forClass"; |
| |
| Map<AnnotationEntry, String> _inverseIndex = new HashMap<AnnotationEntry, String>(); |
| |
| class AnnotationEntry { |
| String value; |
| Class forClass; |
| |
| AnnotationEntry(String value, Class forClass) { |
| |
| this.value = value; |
| this.forClass = forClass; |
| } |
| |
| public boolean equals(Object incoming) { |
| if (incoming == null) { |
| return false; |
| } |
| |
| if (!(incoming instanceof AnnotationEntry)) { |
| return false; |
| } |
| AnnotationEntry toCompare = (AnnotationEntry) incoming; |
| |
| boolean firstEquals = compareValuePair(value, toCompare.getValue()); |
| boolean secondEquals = compareValuePair(forClass, toCompare.getForClass()); |
| |
| return firstEquals && secondEquals; |
| } |
| |
| @Override |
| public int hashCode() { |
| String retVal = checkForNull(value) + "_"; |
| retVal += ((forClass != null) ? forClass.getName() : ""); |
| return retVal.hashCode(); |
| } |
| |
| private String checkForNull(String in) { |
| return (in == null) ? "" : in; |
| } |
| |
| protected boolean compareValuePair(Object val1, Object val2) { |
| boolean retVal = false; |
| if (val1 == null) { |
| if (val2 != null) retVal = false; |
| if (val2 == null) { |
| retVal = true; |
| } |
| } else { |
| retVal = val1.equals(val2); |
| } |
| return retVal; |
| } |
| |
| public String getValue() { |
| return value; |
| } |
| |
| public Class getForClass() { |
| return forClass; |
| } |
| } |
| |
| public ConverterImplementationListener() { |
| super(PAR_VALUE, PAR_DEFAULT); |
| } |
| |
| @Override |
| protected void addEntity(Class clazz, Map<String, Object> params) { |
| String value = (String) params.get(PAR_VALUE); |
| Class forClass = (Class) params.get(PAR_DEFAULT); |
| |
| AnnotationEntry entry = new AnnotationEntry(value, forClass); |
| _alreadyRegistered.put(clazz.getName(), entry); |
| _inverseIndex.put(entry, clazz.getName()); |
| |
| getApplication().addConverter(entry.getValue(), clazz.getName()); |
| } |
| |
| @Override |
| protected boolean hasToReregister(Map params, Class clazz) { |
| String value = (String) params.get(PAR_VALUE); |
| Class forClass = (Class) params.get(PAR_DEFAULT); |
| |
| AnnotationEntry entry = new AnnotationEntry(value, forClass); |
| |
| AnnotationEntry alreadyRegistered = (AnnotationEntry) _alreadyRegistered.get(clazz.getName()); |
| |
| return (alreadyRegistered == null) || alreadyRegistered.equals(entry); |
| } |
| |
| public boolean supportsAnnotation(String annotation) { |
| return annotation.equals(FacesConverter.class.getName()); |
| } |
| |
| public boolean supportsAnnotation(Class annotation) { |
| return annotation.equals(FacesConverter.class); |
| } |
| |
| |
| @Override |
| public void purge(String className) { |
| super.purge(className); |
| AnnotationEntry entry = (AnnotationEntry) _alreadyRegistered.remove(className); |
| if (entry == null) { |
| return; |
| } |
| String _oldConverterClass = _inverseIndex.get(entry); |
| if (_oldConverterClass.equals(className)) { |
| Application application = getApplication(); |
| application.addConverter(entry.getValue(), PurgedConverter.class.getName()); |
| _inverseIndex.put(entry, className); |
| } |
| } |
| |
| } |