/*
* Copyright 2008-2009 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 net.hasor.web.definition;
import net.hasor.core.AppContext;
import net.hasor.core.BindInfo;
import net.hasor.core.utils.Iterators;
import net.hasor.web.Invoker;
import net.hasor.web.InvokerChain;
import net.hasor.web.InvokerConfig;
import net.hasor.web.InvokerFilter;
import java.util.Enumeration;
import java.util.Map;
/**
* InvokerFilter 定义
* @version : 2017-01-10
* @author 赵永春 (zyc@hasor.net)
*/
public class InvokeFilterDefinition extends AbstractDefinition {
private BindInfo<? extends InvokerFilter> bindInfo = null;
private InvokerFilter instance = null;
//
public InvokeFilterDefinition(long index, String pattern, UriPatternMatcher uriPatternMatcher,//
BindInfo<? extends InvokerFilter> bindInfo, Map<String, String> initParams) {
super(index, pattern, uriPatternMatcher, initParams);
this.bindInfo = bindInfo;
}
//
protected final InvokerFilter getTarget() throws Throwable {
if (this.instance != null) {
return this.instance;
}
//
final Map<String, String> initParams = this.getInitParams();
final AppContext appContext = this.getAppContext();
this.instance = appContext.getInstance(this.bindInfo);
this.instance.init(new InvokerConfig() {
@Override
public String getInitParameter(String name) {
return initParams.get(name);
}
@Override
public Enumeration<String> getInitParameterNames() {
return Iterators.asEnumeration(initParams.keySet().iterator());
}
@Override
public AppContext getAppContext() {
return appContext;
}
});
return this.instance;
}
//
/*--------------------------------------------------------------------------------------------------------*/
public void doInvoke(Invoker invoker, InvokerChain chain) throws Throwable {
InvokerFilter filter = this.getTarget();
if (filter != null) {
filter.doInvoke(invoker, chain);
} else {
chain.doNext(invoker);
}
}
public void destroy() {
if (this.instance != null) {
this.instance.destroy();
}
}
}