| /* |
| * 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 org.apache.myfaces.extensions.validator.core.WebXmlParameter; |
| import org.apache.myfaces.extensions.validator.core.ExtValContext; |
| import org.apache.myfaces.extensions.validator.core.CustomInformation; |
| import org.apache.myfaces.extensions.validator.util.ClassUtils; |
| import org.apache.myfaces.extensions.validator.util.ExtValUtils; |
| import org.apache.myfaces.extensions.validator.internal.ToDo; |
| import org.apache.myfaces.extensions.validator.internal.Priority; |
| import org.apache.myfaces.extensions.validator.internal.UsageInformation; |
| import org.apache.myfaces.extensions.validator.internal.UsageCategory; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * This factory creates a meta-data extractor which extracts the meta-data |
| * of the value binding of a component. |
| * <p/> |
| * order:<br/> |
| * <ol> |
| * <li>configured meta-data extractor (web.xml)</li> |
| * <li>configured meta-data extractor (information provider bean)</li> |
| * <li>default implementation</li> |
| * </ol> |
| * |
| * @author Gerhard Petracek |
| * @since 1.x.1 |
| */ |
| @UsageInformation(UsageCategory.INTERNAL) |
| public class DefaultComponentMetaDataExtractorFactory implements ComponentMetaDataExtractorFactory |
| { |
| private final Log logger = LogFactory.getLog(getClass()); |
| |
| private static MetaDataExtractor metaDataExtractor = null; |
| |
| public DefaultComponentMetaDataExtractorFactory() |
| { |
| if(logger.isDebugEnabled()) |
| { |
| logger.debug(getClass().getName() + " instantiated"); |
| } |
| } |
| |
| @ToDo(value = Priority.MEDIUM, description = "logging") |
| public MetaDataExtractor create() |
| { |
| if (metaDataExtractor == null) |
| { |
| List<String> metaDataExtractorClassNames = new ArrayList<String>(); |
| |
| metaDataExtractorClassNames.add(WebXmlParameter.CUSTOM_COMPONENT_META_DATA_EXTRACTOR); |
| metaDataExtractorClassNames |
| .add(ExtValContext.getContext().getInformationProviderBean() |
| .get(CustomInformation.COMPONENT_META_DATA_EXTRACTOR)); |
| metaDataExtractorClassNames.add(DefaultComponentMetaDataExtractor.class.getName()); |
| |
| for (String className : metaDataExtractorClassNames) |
| { |
| metaDataExtractor = (MetaDataExtractor) ClassUtils.tryToInstantiateClassForName(className); |
| |
| if (metaDataExtractor != null) |
| { |
| break; |
| } |
| } |
| } |
| |
| if(logger.isTraceEnabled()) |
| { |
| logger.trace(metaDataExtractor.getClass().getName() + " created"); |
| } |
| |
| return ExtValUtils.createInterceptedMetaDataExtractor(metaDataExtractor); |
| } |
| } |