uicomponentbeandefinitionparser.java

Please read your package and describe it at least 40 bytes in English. System will automatically de

/*
 * Copyright 2002-2004 the original author or authors.
 * 
 * Licensed 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 de.mindmatters.faces.spring.factory.aspectj;

import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.parsing.BeanComponentDefinition;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.BeanDefinitionReaderUtils;
import org.springframework.beans.factory.support.ManagedList;
import org.springframework.beans.factory.xml.BeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.w3c.dom.Element;

/**
 * {@link org.springframework.beans.factory.xml.BeanDefinitionParser}
 * implementation for parsing JSF component tags and creating the appropriate
 * {@link UIComponentDefinition} definitions.
 * 
 * @author Andreas Kuhrwahl
 * 
 */
final class UIComponentBeanDefinitionParser extends
        AbstractUIComponentBeanDefinitionDecorator implements
        BeanDefinitionParser {

    /**
     * {@inheritDoc}
     */
    protected void decorateInternal(final Element componentElement,
            final BeanDefinitionHolder definition, final ManagedList list,
            final ParserContext parserContext) {
        list.add(parserContext.getDelegate().parseCustomElement(
                componentElement, definition.getBeanDefinition()));
    }

    /**
     * {@inheritDoc}
     */
    public BeanDefinition parse(final Element element,
            final ParserContext parserContext) {
        AbstractBeanDefinition component = null;
        Class componentClass = JsfBeanDefinitionParserUtils
                .createExtendedUIComponentClass(
                        element
                                .getAttribute(JsfBeanDefinitionParserUtils.CLASS_ATTRIBUTE),
                        parserContext);
        if (componentClass != null) {
            String componentType = element
                    .getAttribute(JsfBeanDefinitionParserUtils.TYPE_ATTRIBUTE);
            String componentClassName = componentClass.getName();
            component = parserContext.getDelegate().parseBeanDefinitionElement(
                    element, null, null);
            component.setBeanClass(componentClass);
            component.setSingleton(false);
            component.setRole(BeanDefinition.ROLE_SUPPORT);
            BeanDefinitionHolder holder = new BeanDefinitionHolder(component,
                    componentClassName);
            parserContext.getDelegate().decorateBeanDefinitionIfRequired(
                    element, holder);
            BeanDefinitionReaderUtils.registerBeanDefinition(holder,
                    parserContext.getRegistry());
            parserContext.getRegistry().registerAlias(componentClassName,
                    componentType);
            registerUIComponentDefinition(componentType, componentClassName,
                    parserContext);
            if (!parserContext.isNested()) {
                parserContext.getReaderContext().fireComponentRegistered(
                        new BeanComponentDefinition(holder));
            }
        }
        return component;
    }

    /**
     * Registers the {@link UIComponentDefinition}.
     * 
     * @param componentType
     *            the type of the component
     * @param componentClassName
     *            the class name of the component
     * @param parserContext
     *            the {@link ParserContext}
     */
    private void registerUIComponentDefinition(final String componentType,
            final String componentClassName, final ParserContext parserContext) {
        BeanDefinitionBuilder builder = BeanDefinitionBuilder
                .rootBeanDefinition(UIComponentDefinition.class);
        builder.addConstructorArg(componentType);
        builder.addConstructorArg(componentClassName);
        builder.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
        BeanDefinitionReaderUtils.registerWithGeneratedName(builder
                .getBeanDefinition(), parserContext.getRegistry());
    }

}