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Java > Open Source Codes > org > springframework > webflow > executor > RequestParameterInputMapper


1 /*
2  * Copyright 2002-2006 the original author or authors.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.springframework.webflow.executor;
17
18 import org.springframework.binding.mapping.AttributeMapper;
19 import org.springframework.binding.mapping.MappingContext;
20 import org.springframework.webflow.context.ExternalContext;
21 import org.springframework.webflow.core.collection.MutableAttributeMap;
22
23 /**
24  * Simple attribute mapper implementation that puts all entries in the
25  * request parameter map of a source {@link ExternalContext} into the
26  * FlowExecution inputMap. This makes request parameters available to launching
27  * flows for input mapping.
28  * <p>
29  * Used by {@link FlowExecutorImpl} as the default AttributeMapper
30  * implementation.
31  *
32  * @see ExternalContext#getRequestParameterMap()
33  * @see FlowExecutor#launch(String, ExternalContext)
34  *
35  * @author Keith Donald
36  */
37 public class RequestParameterInputMapper implements AttributeMapper {
38     public void map(Object JavaDoc source, Object JavaDoc target, MappingContext context) {
39         ExternalContext externalContext = (ExternalContext)source;
40         MutableAttributeMap inputMap = (MutableAttributeMap)target;
41         inputMap.putAll(externalContext.getRequestParameterMap().asAttributeMap());
42     }
43 }
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