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Java > Open Source Codes > org > apache > tapestry > engine > IMonitorFactory


1 // Copyright 2004, 2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
14

15 package org.apache.tapestry.engine;
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17 import org.apache.tapestry.web.WebRequest;
18
19 /**
20  * Interface for an object that can create a {@link IMonitor}instance for a particular
21  * {@link org.apache.tapestry.request.RequestContext}. The engine expects there to be a monitor
22  * factory as application extension <code>org.apache.tapestry.monitor-factory</code>. If no such
23  * extension exists, then {@link org.apache.tapestry.engine.DefaultMonitorFactory}is used instead.
24  *
25  * @author Howard Lewis Ship
26  * @since 3.0
27  */

28 public interface IMonitorFactory
29 {
30     /**
31      * Create a new {@link IMonitor}instance. Alternately, return a shared instance. This method
32      * may be invoked by multiple threads.
33      */

34
35     public IMonitor createMonitor(WebRequest request);
36 }
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