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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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28 | 16 | 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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{ |
35 | 2 | super(); |
36 | 2 | } |
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public InterceptorStack(List interceptors) |
39 | 0 | { |
40 | 0 | this.interceptors = interceptors; |
41 | 0 | } |
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public UMOMessage intercept(Invocation invocation) throws UMOException |
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{ |
45 | 2 | return new Invoc(invocation).execute(); |
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} |
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private class Invoc extends Invocation |
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{ |
50 | 2 | private int cursor = 0; |
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private Invocation invocation; |
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public Invoc(Invocation invocation) |
54 | 2 | { |
55 | 2 | super(invocation.getDescriptor(), invocation.getMessage(), invocation); |
56 | 2 | this.invocation = invocation; |
57 | 2 | } |
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public UMOMessage execute() throws UMOException |
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{ |
61 | 6 | if (interceptors != null && cursor < interceptors.size()) |
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{ |
63 | 4 | UMOInterceptor interceptor = (UMOInterceptor) interceptors.get(cursor); |
64 | 4 | cursor++; |
65 | 4 | setMessage(interceptor.intercept(this)); |
66 | 4 | } |
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else |
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{ |
69 | 2 | invocation.setMessage(getMessage()); |
70 | 2 | setMessage(invocation.execute()); |
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} |
72 | 6 | return getMessage(); |
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} |
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} |
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public List getInterceptors() |
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{ |
79 | 0 | return interceptors; |
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} |
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public void setInterceptors(List interceptors) |
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{ |
84 | 2 | this.interceptors = interceptors; |
85 | 2 | } |
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public void initialise() throws InitialisationException |
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{ |
89 | 0 | for (Iterator it = interceptors.iterator(); it.hasNext();) |
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{ |
91 | 0 | UMOInterceptor interceptor = (UMOInterceptor) it.next(); |
92 | 0 | if (interceptor instanceof Initialisable) |
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{ |
94 | 0 | ((Initialisable) interceptor).initialise(); |
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} |
96 | 0 | } |
97 | 0 | } |
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public void dispose() |
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{ |
101 | 0 | for (Iterator it = interceptors.iterator(); it.hasNext();) |
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{ |
103 | 0 | UMOInterceptor interceptor = (UMOInterceptor) it.next(); |
104 | 0 | if (interceptor instanceof Disposable) |
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{ |
106 | 0 | ((Disposable) interceptor).dispose(); |
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} |
108 | 0 | } |
109 | 0 | } |
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} |