MilongaBeanDefinitionParser.java

/*
 * Copyright 2014 K.M. Kim
 *
 * 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 com.skp.milonga.config.tag;

import java.util.List;

import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.support.BeanDefinitionReaderUtils;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.beans.factory.xml.BeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
import org.springframework.util.xml.DomUtils;
import org.w3c.dom.Element;

import com.skp.milonga.servlet.handler.AtmosRequestMappingHandlerMapping;

public class MilongaBeanDefinitionParser implements BeanDefinitionParser {
	
	public static final String PROPERTY_USER_SOURCE_LOCATION = "userSourceLocations";
	public static final String PROPERTY_AUTO_REFRESHABLE = "autoRefreshable";
	
	public static final String DEFAULT_USER_SOURCE_LOCATION = "WEB-INF/js";
	public static final String DEFAULT_AUTO_REFRESHABLE = "true";
	
	@Override
	public BeanDefinition parse(Element element, ParserContext parserContext) {
		RootBeanDefinition handlerMappingDef = new RootBeanDefinition(
				AtmosRequestMappingHandlerMapping.class);
		handlerMappingDef.setSource(parserContext.extractSource(element));
		
		boolean autoRefreshable = false;
		Element autoRefreshableElem = DomUtils.getChildElementByTagName(
				element, "autoRefreshable");
		if (autoRefreshableElem != null) {
			autoRefreshable = Boolean.parseBoolean(autoRefreshableElem.getAttribute("value"));
		}
		
		List<Element> dirElemList = DomUtils.getChildElementsByTagName(element, "location");
		String[] dirStrArr = new String[dirElemList.size()];
		for (int i = 0 ; i < dirStrArr.length ; i++) {
			dirStrArr[i] = dirElemList.get(i).getTextContent();
		}
		
		handlerMappingDef.getPropertyValues().addPropertyValue(
				PROPERTY_USER_SOURCE_LOCATION, dirStrArr);
		handlerMappingDef.getPropertyValues().addPropertyValue(
				PROPERTY_AUTO_REFRESHABLE, autoRefreshable);
		String handlerMappingName = parserContext.getReaderContext()
				.registerWithGeneratedName(handlerMappingDef);
		BeanDefinitionHolder handlerMappingBeanDefinitionHolder = new BeanDefinitionHolder(
				handlerMappingDef, handlerMappingName);
		BeanDefinitionReaderUtils
				.registerBeanDefinition(handlerMappingBeanDefinitionHolder,
						parserContext.getRegistry());

		RootBeanDefinition propertySourceConfigurerDef = new RootBeanDefinition(
				PropertySourcesPlaceholderConfigurer.class);
		String propertySourceConfigurerName = parserContext.getReaderContext()
				.registerWithGeneratedName(propertySourceConfigurerDef);
		BeanDefinitionHolder propertySourceConfigurerBeanDefinitionHolder = new BeanDefinitionHolder(
				propertySourceConfigurerDef, propertySourceConfigurerName);
		BeanDefinitionReaderUtils.registerBeanDefinition(
				propertySourceConfigurerBeanDefinitionHolder,
				parserContext.getRegistry());

		return handlerMappingDef;
	}

}