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org.apache.commons.jelly.tags.soap.InvokeRawTag	0%	0%

1		/*
2		* Copyright 2002,2004 The Apache Software Foundation.
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
17		package org.apache.commons.jelly.tags.soap;
18
19		import java.io.IOException;
20		import java.net.MalformedURLException;
21		import java.rmi.RemoteException;
22
23		import org.apache.commons.httpclient.HttpClient;
24		import org.apache.commons.httpclient.HttpException;
25		import org.apache.commons.httpclient.methods.EntityEnclosingMethod;
26		import org.apache.commons.httpclient.methods.PostMethod;
27		import org.apache.commons.jelly.JellyTagException;
28		import org.apache.commons.jelly.MissingAttributeException;
29		import org.apache.commons.jelly.TagSupport;
30		import org.apache.commons.jelly.XMLOutput;
31
32		/**
33		* Invokes a web service
34		*
35		* @author <a href="mailto:jim@bnainc.net">James Birchfield</a>
36		* @version $Revision: 155420 $
37		*/
38		public class InvokeRawTag extends TagSupport
39		{
40
41		private String var;
42	0	private String endpoint = null;
43		private String soapAction;
44
45		public InvokeRawTag()
46	0	{
47	0	}
48
49		// Tag interface
50		//-------------------------------------------------------------------------
51		public void doTag(XMLOutput output)
52		throws MissingAttributeException, JellyTagException
53		{
54	0	if (endpoint == null)
55		{
56	0	throw new MissingAttributeException("endpoint");
57		}
58
59	0	String request = getBodyText();
60
61	0	String answer = null;
62		try
63		{
64		// Prepare HTTP post
65	0	PostMethod post = new PostMethod(endpoint);
66
67		// Request content will be retrieved directly
68		// from the input stream
69	0	post.setRequestBody(new StringInputStream(request));
70
71		// Per default, the request content needs to be buffered
72		// in order to determine its length.
73		// Request body buffering can be avoided when
74		// = content length is explicitly specified
75		// = chunk-encoding is used
76	0	if (request.length() < Integer.MAX_VALUE)
77		{
78	0	post.setRequestContentLength((int) request.length());
79		}
80		else
81		{
82	0	post.setRequestContentLength(
83		EntityEnclosingMethod.CONTENT_LENGTH_CHUNKED);
84		}
85
86		// Specify content type and encoding
87		// If content encoding is not explicitly specified
88		// ISO-8859-1 is assumed
89	0	post.setRequestHeader(
90		"Content-type",
91		"text/xml; charset=ISO-8859-1");
92
93		// Set the SOAPAction header
94	0	if ( soapAction == null )
95		{
96	0	post.setRequestHeader( "SOAPAction", "");
97		}
98		else
99		{
100	0	post.setRequestHeader( "SOAPAction", soapAction);
101		}
102
103		// Get HTTP client
104	0	HttpClient httpclient = new HttpClient();
105		// Execute request
106	0	int result = httpclient.executeMethod(post);
107
108	0	answer = post.getResponseBodyAsString();
109
110		// Release current connection to the connection pool once you are done
111	0	post.releaseConnection();
112		}
113	0	catch (MalformedURLException e)
114		{
115	0	throw new JellyTagException(e);
116		}
117	0	catch (RemoteException e)
118		{
119	0	throw new JellyTagException(e);
120		}
121	0	catch (HttpException e)
122		{
123	0	throw new JellyTagException(e);
124		}
125	0	catch (IOException e)
126		{
127	0	throw new JellyTagException(e);
128	0	}
129
130	0	if (var != null)
131		{
132	0	context.setVariable(var, answer);
133		}
134		else
135		{
136		// should turn the answer into XML events...
137	0	throw new JellyTagException(
138		"Not implemented yet; should stream results as XML events. Results: "
139		+ answer);
140		}
141	0	}
142
143		// Properties
144		//-------------------------------------------------------------------------
145		/**
146		* Sets the end point to which the invocation will occur
147		*/
148		public void setEndpoint(String endpoint)
149		{
150	0	this.endpoint = endpoint;
151	0	}
152
153		/**
154		* Sets the name of the variable to output the results of the SOAP call to.
155		*/
156		public void setVar(String var)
157		{
158	0	this.var = class="keyword">var;
159	0	}
160
161		/**
162		* The SOAPAction HTTP header.
163		*/
164		public void setSoapAction(String action)
165		{
166	0	soapAction = action;
167	0	}
168
169		}

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