src/site/assets/static/1.2.4/apidocs/src-html/org/apache/shiro/web/servlet/ProxiedFilterChain.html - shiro-site - Git at Google

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 <FONT color="green">001</FONT>    /*<a name="line.1"></a>
 <FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
 <FONT color="green">003</FONT>     * or more contributor license agreements.  See the NOTICE file<a name="line.3"></a>
 <FONT color="green">004</FONT>     * distributed with this work for additional information<a name="line.4"></a>
 <FONT color="green">005</FONT>     * regarding copyright ownership.  The ASF licenses this file<a name="line.5"></a>
 <FONT color="green">006</FONT>     * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
 <FONT color="green">007</FONT>     * "License"); you may not use this file except in compliance<a name="line.7"></a>
 <FONT color="green">008</FONT>     * with the License.  You may obtain a copy of the License at<a name="line.8"></a>
 <FONT color="green">009</FONT>     *<a name="line.9"></a>
 <FONT color="green">010</FONT>     *     http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
 <FONT color="green">011</FONT>     *<a name="line.11"></a>
 <FONT color="green">012</FONT>     * Unless required by applicable law or agreed to in writing,<a name="line.12"></a>
 <FONT color="green">013</FONT>     * software distributed under the License is distributed on an<a name="line.13"></a>
 <FONT color="green">014</FONT>     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a>
 <FONT color="green">015</FONT>     * KIND, either express or implied.  See the License for the<a name="line.15"></a>
 <FONT color="green">016</FONT>     * specific language governing permissions and limitations<a name="line.16"></a>
 <FONT color="green">017</FONT>     * under the License.<a name="line.17"></a>
 <FONT color="green">018</FONT>     */<a name="line.18"></a>
 <FONT color="green">019</FONT>    package org.apache.shiro.web.servlet;<a name="line.19"></a>
 <FONT color="green">020</FONT>    <a name="line.20"></a>
 <FONT color="green">021</FONT>    import org.slf4j.Logger;<a name="line.21"></a>
 <FONT color="green">022</FONT>    import org.slf4j.LoggerFactory;<a name="line.22"></a>
 <FONT color="green">023</FONT>    <a name="line.23"></a>
 <FONT color="green">024</FONT>    import javax.servlet.*;<a name="line.24"></a>
 <FONT color="green">025</FONT>    import java.io.IOException;<a name="line.25"></a>
 <FONT color="green">026</FONT>    import java.util.List;<a name="line.26"></a>
 <FONT color="green">027</FONT>    <a name="line.27"></a>
 <FONT color="green">028</FONT>    /**<a name="line.28"></a>
 <FONT color="green">029</FONT>     * A proxied filter chain is a {@link FilterChain} instance that proxies an original {@link FilterChain} as well<a name="line.29"></a>
 <FONT color="green">030</FONT>     * as a {@link List List} of other {@link Filter Filter}s that might need to execute prior to the final wrapped<a name="line.30"></a>
 <FONT color="green">031</FONT>     * original chain.  It allows a list of filters to execute before continuing the original (proxied)<a name="line.31"></a>
 <FONT color="green">032</FONT>     * {@code FilterChain} instance.<a name="line.32"></a>
 <FONT color="green">033</FONT>     *<a name="line.33"></a>
 <FONT color="green">034</FONT>     * @since 0.9<a name="line.34"></a>
 <FONT color="green">035</FONT>     */<a name="line.35"></a>
 <FONT color="green">036</FONT>    public class ProxiedFilterChain implements FilterChain {<a name="line.36"></a>
 <FONT color="green">037</FONT>    <a name="line.37"></a>
 <FONT color="green">038</FONT>        //TODO - complete JavaDoc<a name="line.38"></a>
 <FONT color="green">039</FONT>    <a name="line.39"></a>
 <FONT color="green">040</FONT>        private static final Logger log = LoggerFactory.getLogger(ProxiedFilterChain.class);<a name="line.40"></a>
 <FONT color="green">041</FONT>    <a name="line.41"></a>
 <FONT color="green">042</FONT>        private FilterChain orig;<a name="line.42"></a>
 <FONT color="green">043</FONT>        private List&lt;Filter&gt; filters;<a name="line.43"></a>
 <FONT color="green">044</FONT>        private int index = 0;<a name="line.44"></a>
 <FONT color="green">045</FONT>    <a name="line.45"></a>
 <FONT color="green">046</FONT>        public ProxiedFilterChain(FilterChain orig, List&lt;Filter&gt; filters) {<a name="line.46"></a>
 <FONT color="green">047</FONT>            if (orig == null) {<a name="line.47"></a>
 <FONT color="green">048</FONT>                throw new NullPointerException("original FilterChain cannot be null.");<a name="line.48"></a>
 <FONT color="green">049</FONT>            }<a name="line.49"></a>
 <FONT color="green">050</FONT>            this.orig = orig;<a name="line.50"></a>
 <FONT color="green">051</FONT>            this.filters = filters;<a name="line.51"></a>
 <FONT color="green">052</FONT>            this.index = 0;<a name="line.52"></a>
 <FONT color="green">053</FONT>        }<a name="line.53"></a>
 <FONT color="green">054</FONT>    <a name="line.54"></a>
 <FONT color="green">055</FONT>        public void doFilter(ServletRequest request, ServletResponse response) throws IOException, ServletException {<a name="line.55"></a>
 <FONT color="green">056</FONT>            if (this.filters == null || this.filters.size() == this.index) {<a name="line.56"></a>
 <FONT color="green">057</FONT>                //we've reached the end of the wrapped chain, so invoke the original one:<a name="line.57"></a>
 <FONT color="green">058</FONT>                if (log.isTraceEnabled()) {<a name="line.58"></a>
 <FONT color="green">059</FONT>                    log.trace("Invoking original filter chain.");<a name="line.59"></a>
 <FONT color="green">060</FONT>                }<a name="line.60"></a>
 <FONT color="green">061</FONT>                this.orig.doFilter(request, response);<a name="line.61"></a>
 <FONT color="green">062</FONT>            } else {<a name="line.62"></a>
 <FONT color="green">063</FONT>                if (log.isTraceEnabled()) {<a name="line.63"></a>
 <FONT color="green">064</FONT>                    log.trace("Invoking wrapped filter at index [" + this.index + "]");<a name="line.64"></a>
 <FONT color="green">065</FONT>                }<a name="line.65"></a>
 <FONT color="green">066</FONT>                this.filters.get(this.index++).doFilter(request, response, this);<a name="line.66"></a>
 <FONT color="green">067</FONT>            }<a name="line.67"></a>
 <FONT color="green">068</FONT>        }<a name="line.68"></a>
 <FONT color="green">069</FONT>    }<a name="line.69"></a>


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	<FONT color="green">001</FONT> /*<a name="line.1"></a>
	<FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
	<FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
	<FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a>
	<FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
	<FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
	<FONT color="green">007</FONT> * "License"); you may not use this file except in compliance<a name="line.7"></a>
	<FONT color="green">008</FONT> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
	<FONT color="green">009</FONT> *<a name="line.9"></a>
	<FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
	<FONT color="green">011</FONT> *<a name="line.11"></a>
	<FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a>
	<FONT color="green">013</FONT> * software distributed under the License is distributed on an<a name="line.13"></a>
	<FONT color="green">014</FONT> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a>
	<FONT color="green">015</FONT> * KIND, either express or implied. See the License for the<a name="line.15"></a>
	<FONT color="green">016</FONT> * specific language governing permissions and limitations<a name="line.16"></a>
	<FONT color="green">017</FONT> * under the License.<a name="line.17"></a>
	<FONT color="green">018</FONT> */<a name="line.18"></a>
	<FONT color="green">019</FONT> package org.apache.shiro.web.servlet;<a name="line.19"></a>
	<FONT color="green">020</FONT> <a name="line.20"></a>
	<FONT color="green">021</FONT> import org.slf4j.Logger;<a name="line.21"></a>
	<FONT color="green">022</FONT> import org.slf4j.LoggerFactory;<a name="line.22"></a>
	<FONT color="green">023</FONT> <a name="line.23"></a>
	<FONT color="green">024</FONT> import javax.servlet.*;<a name="line.24"></a>
	<FONT color="green">025</FONT> import java.io.IOException;<a name="line.25"></a>
	<FONT color="green">026</FONT> import java.util.List;<a name="line.26"></a>
	<FONT color="green">027</FONT> <a name="line.27"></a>
	<FONT color="green">028</FONT> /**<a name="line.28"></a>
	<FONT color="green">029</FONT> * A proxied filter chain is a {@link FilterChain} instance that proxies an original {@link FilterChain} as well<a name="line.29"></a>
	<FONT color="green">030</FONT> * as a {@link List List} of other {@link Filter Filter}s that might need to execute prior to the final wrapped<a name="line.30"></a>
	<FONT color="green">031</FONT> * original chain. It allows a list of filters to execute before continuing the original (proxied)<a name="line.31"></a>
	<FONT color="green">032</FONT> * {@code FilterChain} instance.<a name="line.32"></a>
	<FONT color="green">033</FONT> *<a name="line.33"></a>
	<FONT color="green">034</FONT> * @since 0.9<a name="line.34"></a>
	<FONT color="green">035</FONT> */<a name="line.35"></a>
	<FONT color="green">036</FONT> public class ProxiedFilterChain implements FilterChain {<a name="line.36"></a>
	<FONT color="green">037</FONT> <a name="line.37"></a>
	<FONT color="green">038</FONT> //TODO - complete JavaDoc<a name="line.38"></a>
	<FONT color="green">039</FONT> <a name="line.39"></a>
	<FONT color="green">040</FONT> private static final Logger log = LoggerFactory.getLogger(ProxiedFilterChain.class);<a name="line.40"></a>
	<FONT color="green">041</FONT> <a name="line.41"></a>
	<FONT color="green">042</FONT> private FilterChain orig;<a name="line.42"></a>
	<FONT color="green">043</FONT> private List<Filter> filters;<a name="line.43"></a>
	<FONT color="green">044</FONT> private int index = 0;<a name="line.44"></a>
	<FONT color="green">045</FONT> <a name="line.45"></a>
	<FONT color="green">046</FONT> public ProxiedFilterChain(FilterChain orig, List<Filter> filters) {<a name="line.46"></a>
	<FONT color="green">047</FONT> if (orig == null) {<a name="line.47"></a>
	<FONT color="green">048</FONT> throw new NullPointerException("original FilterChain cannot be null.");<a name="line.48"></a>
	<FONT color="green">049</FONT> }<a name="line.49"></a>
	<FONT color="green">050</FONT> this.orig = orig;<a name="line.50"></a>
	<FONT color="green">051</FONT> this.filters = filters;<a name="line.51"></a>
	<FONT color="green">052</FONT> this.index = 0;<a name="line.52"></a>
	<FONT color="green">053</FONT> }<a name="line.53"></a>
	<FONT color="green">054</FONT> <a name="line.54"></a>
	<FONT color="green">055</FONT> public void doFilter(ServletRequest request, ServletResponse response) throws IOException, ServletException {<a name="line.55"></a>
	<FONT color="green">056</FONT> if (this.filters == null \|\| this.filters.size() == this.index) {<a name="line.56"></a>
	<FONT color="green">057</FONT> //we've reached the end of the wrapped chain, so invoke the original one:<a name="line.57"></a>
	<FONT color="green">058</FONT> if (log.isTraceEnabled()) {<a name="line.58"></a>
	<FONT color="green">059</FONT> log.trace("Invoking original filter chain.");<a name="line.59"></a>
	<FONT color="green">060</FONT> }<a name="line.60"></a>
	<FONT color="green">061</FONT> this.orig.doFilter(request, response);<a name="line.61"></a>
	<FONT color="green">062</FONT> } else {<a name="line.62"></a>
	<FONT color="green">063</FONT> if (log.isTraceEnabled()) {<a name="line.63"></a>
	<FONT color="green">064</FONT> log.trace("Invoking wrapped filter at index [" + this.index + "]");<a name="line.64"></a>
	<FONT color="green">065</FONT> }<a name="line.65"></a>
	<FONT color="green">066</FONT> this.filters.get(this.index++).doFilter(request, response, this);<a name="line.66"></a>
	<FONT color="green">067</FONT> }<a name="line.67"></a>
	<FONT color="green">068</FONT> }<a name="line.68"></a>
	<FONT color="green">069</FONT> }<a name="line.69"></a>




























































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