Mercurial > hg > eSciDocMPIWGServicesRestlet

comparison src/de/mpiwg/itgroup/escidoc/MPIWGServices/Restlet/services/redirect/ComponentURLRedirector.java @ 0:1aac45997235

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first ingest
author dwinter
date Wed, 01 Dec 2010 17:35:51 +0100
parents
children 498b68667ff3
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-1:000000000000 0:1aac45997235
1 package de.mpiwg.itgroup.escidoc.MPIWGServices.Restlet.services.redirect;
2
3
4 import java.io.IOException;
5 import java.io.InputStream;
6 import java.util.Properties;
7
8 import org.apache.http.HttpResponse;
9 import org.jdom.Attribute;
10 import org.jdom.Document;
11 import org.jdom.JDOMException;
12 import org.jdom.input.SAXBuilder;
13 import org.jdom.xpath.XPath;
14 import org.restlet.data.Status;
15 import org.restlet.representation.Representation;
16 import org.restlet.representation.StringRepresentation;
17 import org.restlet.resource.Get;
18 import org.restlet.resource.ServerResource;
19
20 import de.mpiwg.itgroup.eSciDoc.Tools.EScidocBasicHandler;
21 import de.mpiwg.itgroup.eSciDoc.Tools.EScidocTools;
22
23
24 public class ComponentURLRedirector extends ServerResource{
25
26 private String eScidocServer;
27 private String eScidocPort;
28 private String content_cat;
29 private String eScidocUser;
30 private String eScidocUserPW;
31
32 public ComponentURLRedirector(String content_cat) throws IOException{
33 this.content_cat = content_cat;
34 InputStream is = getClass().getResourceAsStream("/de/mpiwg/itgroup/escidoc/MPIWGServices/Restlet/config/eScidocServer.config");
35 Properties prop = new Properties();
36 prop.load(is);
37
38 eScidocServer= (String)prop.get("eScidocServer");
39 eScidocPort=(String)prop.get("eScidocPort");
40 eScidocUser = (String)prop.get("eScidocUser");
41 eScidocUserPW=(String)prop.get("eScidocUserPW");
42
43 }
44 @Get("html")
45 public Representation getHtml()
46 {
47 String id = (String)getRequest().getAttributes().get("escidocId");
48 EScidocBasicHandler handler = null;
49 if (getContext().getAttributes().containsKey("escidocHandler")){
50 handler = (EScidocBasicHandler) getContext().getAttributes().get("escidocHandler");
51 }
52
53 if (handler==null){
54 handler = new EScidocBasicHandler(eScidocServer, Integer.valueOf(eScidocPort),eScidocUser,eScidocUserPW);
55 }
56
57
58 HttpResponse resp;
59 try {
60 resp = handler.eScidocGet("/ir/item/"+id);
61 } catch (IOException e) {
62 setStatus(Status.SERVER_ERROR_INTERNAL);
63 return new StringRepresentation("<html><body>error1</body></html>");
64 }
65 int code = resp.getStatusLine().getStatusCode();
66 if (code!=200){
67 setStatus(new Status(code));
68 return new StringRepresentation("<html><body>error2</body></html>");
69
70 }
71
72 Document doc;
73 String url;
74 try {
75 doc = new SAXBuilder().build(resp.getEntity().getContent());
76
77
78 XPath xp= EScidocTools.getESciDocXpath("//escidocComponents:component[escidocComponents:properties/prop:content-category[text()='"+content_cat+"']]/escidocComponents:content/@xlink:href");
79 Attribute item = (Attribute)xp.selectSingleNode(doc);
80 url = item.getValue();
81
82 } catch (Exception e) {
83
84 if (content_cat.equals("display_url")) // wemm display und error dann versuche genrische anzeige der bilder
85 {
86 url="./images";
87 StringRepresentation repr = new StringRepresentation(url);
88 getResponse().redirectPermanent(url);
89 return repr;
90
91 } else {
92 setStatus(Status.SERVER_ERROR_INTERNAL);
93
94 return new StringRepresentation("<html><body>error3a</body></html>");
95 }
96 }
97
98
99 if (!url.startsWith("http")) { // relative url
100 url="http://"+eScidocServer+":"+eScidocPort+url;
101 }
102
103 StringRepresentation repr = new StringRepresentation(url);
104 getResponse().redirectPermanent(url);
105 return repr;
106 }
107 }