01: /* Copyright (c) 2006-2007, Vladimir Nikic
02: All rights reserved.
03:
04: Redistribution and use of this software in source and binary forms,
05: with or without modification, are permitted provided that the following
06: conditions are met:
07:
08: * Redistributions of source code must retain the above
09: copyright notice, this list of conditions and the
10: following disclaimer.
11:
12: * Redistributions in binary form must reproduce the above
13: copyright notice, this list of conditions and the
14: following disclaimer in the documentation and/or other
15: materials provided with the distribution.
16:
17: * The name of Web-Harvest may not be used to endorse or promote
18: products derived from this software without specific prior
19: written permission.
20:
21: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25: LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29: CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31: POSSIBILITY OF SUCH DAMAGE.
32:
33: You can contact Vladimir Nikic by sending e-mail to
34: nikic_vladimir@yahoo.com. Please include the word "Web-Harvest" in the
35: subject line.
36: */
37: package org.webharvest.runtime.processors;
38:
39: import org.webharvest.definition.HttpHeaderDef;
40: import org.webharvest.exception.HttpException;
41: import org.webharvest.runtime.Scraper;
42: import org.webharvest.runtime.ScraperContext;
43: import org.webharvest.runtime.scripting.ScriptEngine;
44: import org.webharvest.runtime.templaters.BaseTemplater;
45: import org.webharvest.runtime.variables.IVariable;
46:
47: /**
48: * Variable definition http header processor.
49: */
50: public class HttpHeaderProcessor extends BaseProcessor {
51:
52: private HttpHeaderDef httpHeaderDef;
53:
54: public HttpHeaderProcessor(HttpHeaderDef httpHeaderDef) {
55: super (httpHeaderDef);
56: this .httpHeaderDef = httpHeaderDef;
57: }
58:
59: public IVariable execute(Scraper scraper, ScraperContext context) {
60: ScriptEngine scriptEngine = scraper.getScriptEngine();
61: String name = BaseTemplater.execute(httpHeaderDef.getName(),
62: scriptEngine);
63: IVariable value = getBodyTextContent(httpHeaderDef, scraper,
64: context);
65:
66: HttpProcessor httpProcessor = scraper.getRunningHttpProcessor();
67: if (httpProcessor != null) {
68: httpProcessor.addHttpHeader(name, value.toString());
69: } else {
70: throw new HttpException(
71: "Usage of http-header processor is not allowed outside of http processor!");
72: }
73:
74: return value;
75: }
76:
77: }
|