Mercurial > hg > eSciDocImport

comparison src/de/mpiwg/itgroup/eSciDoc/echoObjects/ECHOObject.java @ 0:c6929e63b0b8

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first import
author dwinter
date Wed, 24 Nov 2010 16:52:07 +0100
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children 58b52df9763c
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-1:000000000000 0:c6929e63b0b8
1 package de.mpiwg.itgroup.eSciDoc.echoObjects;
2
3 import java.io.IOException;
4 import java.io.InputStream;
5 import java.net.MalformedURLException;
6 import java.net.URL;
7 import java.util.Properties;
8
9
10 import org.apache.http.HttpResponse;
11 import org.apache.http.client.HttpClient;
12 import org.apache.http.client.methods.HttpPost;
13 import org.apache.http.impl.client.DefaultHttpClient;
14 import org.apache.log4j.Logger;
15 import org.apache.xmlrpc.XmlRpcException;
16 import org.apache.xmlrpc.client.XmlRpcClient;
17 import org.apache.xmlrpc.client.XmlRpcClientConfigImpl;
18
19 import de.mpiwg.itgroup.eSciDoc.Tools.EScidocBasicHandler;
20 import de.mpiwg.itgroup.metadataManager.pid.PidGenerator;
21
22 public class ECHOObject {
23 Logger logger = Logger.getRootLogger();
24 public String CMM; // to be overwritten oder initialized with the CMM of this model.
25 public String name;
26 public String echoUrl;
27 public String pid;
28 public String metadataMananagerUrl;
29 public String context;
30 public String description ="";
31
32 public ECHOObject() throws IOException{
33 Properties echoProperties = new Properties();
34 echoProperties.load(getClass().getResourceAsStream("/de/mpiwg/itgroup/eSciDoc/config/echo.properties"));
35
36 metadataMananagerUrl = (String) echoProperties.get("metaDataManager");
37
38 }
39
40 public String getOrCreatePID() throws Exception {
41 Object[] parameters = new Object[] {};
42
43 String pid = null;
44
45 //Verbinde mit ECHO
46 XmlRpcClientConfigImpl config = new XmlRpcClientConfigImpl();
47 try {
48 config.setServerURL(new URL(echoUrl));
49 } catch (MalformedURLException e1) {
50 logger.info("PID-Generator: cannot contact"+echoUrl);
51 pid = null;
52 }
53 XmlRpcClient client = new XmlRpcClient();
54 client.setConfig(config);
55 // Hole pid aus ECHO
56 try {
57 pid = (String) client.execute("getPID", parameters);
58 } catch (Exception e) {
59 logger.info("PID-Generator: cannot contact"+echoUrl);
60 pid = null;
61 }
62 // Falls dort noch keine ist, erzeuge ein neue
63 if (pid == null)
64 {
65 pid = getPid();
66
67 }
68 else
69 logger.info("PID from ECHO:" + pid);
70
71 this.pid=pid;
72 return pid;
73 }
74
75 public String getPid() throws Exception, IOException {
76 String pid;
77 HttpClient hc = new DefaultHttpClient();
78 HttpPost pm = new HttpPost(metadataMananagerUrl+"/PID");
79 HttpResponse ret;
80 try {
81 ret = hc.execute(pm);
82
83 } catch (IOException e) {
84 // TODO Auto-generated catch block
85 e.printStackTrace();
86 throw new Exception("cannot generate PID");
87 }
88 pid=EScidocBasicHandler.convertStreamToString(ret.getEntity().getContent());
89 if (ret.getStatusLine().getStatusCode()>300){
90 //TODO define better Exceptions
91 throw new Exception("cannot generate PID");
92 }
93 return pid;
94 }
95 }