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package org.mule.interceptors; |
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import org.mule.umo.Invocation; |
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import org.mule.umo.UMOException; |
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import org.mule.umo.UMOInterceptor; |
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import org.mule.umo.UMOInterceptorStack; |
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import org.mule.umo.UMOMessage; |
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import org.mule.umo.lifecycle.Disposable; |
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import org.mule.umo.lifecycle.Initialisable; |
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import org.mule.umo.lifecycle.InitialisationException; |
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import java.util.Iterator; |
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import java.util.List; |
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31 | 0 | public class InterceptorStack implements UMOInterceptorStack, Initialisable, Disposable |
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{ |
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private List interceptors; |
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public InterceptorStack() |
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{ |
38 | 0 | super(); |
39 | 0 | } |
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public InterceptorStack(List interceptors) |
42 | 0 | { |
43 | 0 | this.interceptors = interceptors; |
44 | 0 | } |
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public UMOMessage intercept(Invocation invocation) throws UMOException |
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{ |
48 | 0 | return new Invoc(invocation).execute(); |
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} |
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private class Invoc extends Invocation |
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{ |
53 | 0 | private int cursor = 0; |
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private Invocation invocation; |
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public Invoc(Invocation invocation) |
57 | 0 | { |
58 | 0 | super(invocation.getDescriptor(), invocation.getMessage(), invocation); |
59 | 0 | this.invocation = invocation; |
60 | 0 | } |
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public UMOMessage execute() throws UMOException |
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{ |
64 | 0 | if (interceptors != null && cursor < interceptors.size()) |
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{ |
66 | 0 | UMOInterceptor interceptor = (UMOInterceptor) interceptors.get(cursor); |
67 | 0 | cursor++; |
68 | 0 | setMessage(interceptor.intercept(this)); |
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} |
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else |
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{ |
72 | 0 | invocation.setMessage(getMessage()); |
73 | 0 | setMessage(invocation.execute()); |
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} |
75 | 0 | return getMessage(); |
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} |
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} |
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public List getInterceptors() |
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{ |
82 | 0 | return interceptors; |
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} |
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public void setInterceptors(List interceptors) |
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{ |
87 | 0 | this.interceptors = interceptors; |
88 | 0 | } |
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public void initialise() throws InitialisationException |
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{ |
92 | 0 | for (Iterator it = interceptors.iterator(); it.hasNext();) |
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{ |
94 | 0 | UMOInterceptor interceptor = (UMOInterceptor) it.next(); |
95 | 0 | if (interceptor instanceof Initialisable) |
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{ |
97 | 0 | ((Initialisable) interceptor).initialise(); |
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} |
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} |
100 | 0 | } |
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public void dispose() |
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{ |
104 | 0 | for (Iterator it = interceptors.iterator(); it.hasNext();) |
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{ |
106 | 0 | UMOInterceptor interceptor = (UMOInterceptor) it.next(); |
107 | 0 | if (interceptor instanceof Disposable) |
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{ |
109 | 0 | ((Disposable) interceptor).dispose(); |
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} |
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} |
112 | 0 | } |
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} |