/*
* Copyright 2010 Alibaba Group Holding Limited.
* All rights reserved.
*
* 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.alibaba.citrus.service.pull.support;
import static com.alibaba.citrus.springext.util.DomUtil.*;
import static com.alibaba.citrus.springext.util.SpringExtUtil.*;
import static com.alibaba.citrus.util.Assert.*;
import static com.alibaba.citrus.util.CollectionUtil.*;
import static com.alibaba.citrus.util.StringUtil.*;
import java.util.Map;
import java.util.Map.Entry;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.w3c.dom.Element;
import com.alibaba.citrus.service.pull.ToolSetFactory;
import com.alibaba.citrus.springext.support.parser.AbstractSingleBeanDefinitionParser;
import com.alibaba.citrus.springext.util.DomUtil.ElementSelector;
/**
* ��spring context�е�ָ��beanת����pull tool��
*
* @author Michael Zhou
*/
public class ContextExposerToolSet implements ToolSetFactory, ApplicationContextAware, InitializingBean {
private ApplicationContext context;
private Map<String, String> toolNamesAndBeanNames;
public void setApplicationContext(ApplicationContext context) {
this.context = context;
}
public void setBeanNames(Map<String, String> toolNamesAndBeanNames) {
this.toolNamesAndBeanNames = toolNamesAndBeanNames;
}
public void afterPropertiesSet() {
assertNotNull(context, "no context");
if (toolNamesAndBeanNames == null) {
toolNamesAndBeanNames = createHashMap();
}
// beanNameĬ�ϵ���toolName
for (Entry<String, String> entry : toolNamesAndBeanNames.entrySet()) {
String toolName = assertNotNull(trimToNull(entry.getKey()), "missing tool name");
String beanName = trimToNull(entry.getValue());
if (beanName == null) {
beanName = toolName;
entry.setValue(beanName);
}
}
}
public boolean isSingleton() {
return false;
}
public Iterable<String> getToolNames() {
return toolNamesAndBeanNames.keySet();
}
public Object createTool(String name) throws Exception {
String beanName = assertNotNull(toolNamesAndBeanNames.get(name), "no beanName for tool: %s", name);
return context.getBean(beanName);
}
public static class DefinitionParser extends AbstractSingleBeanDefinitionParser<ContextExposerToolSet> {
@Override
protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
Map<Object, Object> names = createManagedMap(element, parserContext);
ElementSelector toolSelector = and(sameNs(element), name("tool"));
for (Element subElement : subElements(element, toolSelector)) {
String toolName = assertNotNull(trimToNull(subElement.getAttribute("id")), "no tool id");
String beanName = trimToNull(subElement.getAttribute("beanName"));
names.put(toolName, beanName);
}
builder.addPropertyValue("beanNames", names);
}
}
}