| /* |
| * 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.validator.core.metadata.extractor; |
| |
| import java.util.logging.Logger; |
| |
| import javax.faces.component.UIComponent; |
| import javax.faces.context.FacesContext; |
| |
| import org.apache.myfaces.extensions.validator.core.metadata.MetaDataEntry; |
| import org.apache.myfaces.extensions.validator.core.property.DefaultPropertyInformation; |
| import org.apache.myfaces.extensions.validator.core.property.PropertyDetails; |
| import org.apache.myfaces.extensions.validator.core.property.PropertyInformation; |
| import org.apache.myfaces.extensions.validator.core.property.PropertyInformationKeys; |
| import org.apache.myfaces.extensions.validator.core.storage.MetaDataStorage; |
| import org.apache.myfaces.extensions.validator.internal.Priority; |
| import org.apache.myfaces.extensions.validator.internal.ToDo; |
| import org.apache.myfaces.extensions.validator.internal.UsageCategory; |
| import org.apache.myfaces.extensions.validator.internal.UsageInformation; |
| import org.apache.myfaces.extensions.validator.util.ExtValAnnotationUtils; |
| import org.apache.myfaces.extensions.validator.util.ExtValUtils; |
| import org.apache.myfaces.extensions.validator.util.ProxyUtils; |
| |
| /** |
| * Default implementation which extracts meta-data (e.g. the annotations) of the value binding of a component. |
| * It extracts the meta-data of the field and the property. |
| * (Also the annotations of super classes and interfaces.) |
| * |
| * @author Gerhard Petracek |
| * @since 1.x.1 |
| */ |
| @UsageInformation(UsageCategory.INTERNAL) |
| public class DefaultComponentMetaDataExtractor implements MetaDataExtractor |
| { |
| protected final Logger logger = Logger.getLogger(getClass().getName()); |
| |
| public DefaultComponentMetaDataExtractor() |
| { |
| logger.fine(getClass().getName() + " instantiated"); |
| } |
| |
| @ToDo(Priority.MEDIUM) |
| public PropertyInformation extract(FacesContext facesContext, Object object) |
| { |
| //should never occur |
| if (!(object instanceof UIComponent)) |
| { |
| if (object != null) |
| { |
| this.logger.warning(object.getClass() + " is no valid component"); |
| } |
| return new DefaultPropertyInformation(); |
| } |
| |
| UIComponent uiComponent = (UIComponent) object; |
| |
| logger.finest("start extracting meta-data of " + uiComponent.getClass().getName()); |
| |
| PropertyDetails propertyDetails = ExtValUtils.getELHelper().getPropertyDetailsOfValueBinding(uiComponent); |
| |
| if (propertyDetails == null) |
| { |
| return new DefaultPropertyInformation(); |
| } |
| |
| /* |
| * get bean class and property name |
| */ |
| Class entityClass = ProxyUtils.getUnproxiedClass(propertyDetails.getBaseObject().getClass()); |
| |
| PropertyInformation propertyInformation = getPropertyInformation(entityClass, propertyDetails); |
| |
| logger.finest("extract finished"); |
| |
| return propertyInformation; |
| } |
| |
| protected PropertyInformation getPropertyInformation(Class entityClass, PropertyDetails propertyDetails) |
| { |
| MetaDataStorage storage = getMetaDataStorage(); |
| |
| PropertyInformation propertyInformation = new DefaultPropertyInformation(); |
| |
| if (isCached(storage, entityClass, propertyDetails.getProperty())) |
| { |
| //create |
| propertyInformation.setInformation(PropertyInformationKeys.PROPERTY_DETAILS, propertyDetails); |
| |
| for (MetaDataEntry metaDataEntry : getCachedMetaData(storage, entityClass, propertyDetails.getProperty())) |
| { |
| propertyInformation.addMetaDataEntry(metaDataEntry); |
| } |
| } |
| else |
| { |
| propertyInformation = ExtValAnnotationUtils.extractAnnotations(entityClass, propertyDetails); |
| cacheMetaData(storage, propertyInformation); |
| } |
| return propertyInformation; |
| } |
| |
| protected boolean isCached(MetaDataStorage storage, Class entityClass, String property) |
| { |
| return storage.containsMetaDataFor(entityClass, property); |
| } |
| |
| protected void cacheMetaData(MetaDataStorage storage, PropertyInformation propertyInformation) |
| { |
| storage.storeMetaDataOf(propertyInformation); |
| } |
| |
| protected MetaDataEntry[] getCachedMetaData(MetaDataStorage storage, Class entityClass, String property) |
| { |
| return storage.getMetaData(entityClass, property); |
| } |
| |
| protected MetaDataStorage getMetaDataStorage() |
| { |
| return ExtValUtils.getStorage(MetaDataStorage.class, MetaDataStorage.class.getName()); |
| } |
| } |