Mercurial > hg > MetaDataManager

comparison src/de/mpiwg/itgroup/metadataManager/pid/DCTransformer.java @ 0:90a19cbda471

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first ingest
author dwinter
date Wed, 24 Nov 2010 16:54:52 +0100
parents
children 38d823b66aff
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-1:000000000000 0:90a19cbda471
1 package de.mpiwg.itgroup.metadataManager.pid;
2
3 import java.io.ByteArrayInputStream;
4 import java.io.IOException;
5 import java.io.InputStream;
6 import java.io.StringReader;
7 import java.io.UnsupportedEncodingException;
8 import java.net.MalformedURLException;
9 import java.net.URL;
10
11 import javax.xml.parsers.DocumentBuilder;
12 import javax.xml.parsers.DocumentBuilderFactory;
13
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 import org.jdom.Document;
19 import org.jdom.Element;
20 import org.jdom.JDOMException;
21 import org.jdom.input.SAXBuilder;
22 import org.jdom.xpath.XPath;
23
24 import org.xml.sax.InputSource;
25
26
27
28 public class DCTransformer {
29 static public String MPIWG = "http://www.mpiwg-berlin.mpg.de/ns/mpiwg";
30
31 public static String converterProvider = "http://127.0.0.1:28080/metadataMain";
32 private String metaDataLink;
33 private Logger logger = Logger.getLogger("transformerLogger");
34
35 public DCTransformer(String metaDataLink) {
36
37 this.metaDataLink=metaDataLink;
38 }
39
40 public Element getDCFromIndexMeta() {
41 //Verbinde mit metadataprovider
42 XmlRpcClientConfigImpl config = new XmlRpcClientConfigImpl();
43
44
45 try {
46 config.setServerURL(new URL(converterProvider));
47 } catch (MalformedURLException e) {
48 // TODO Auto-generated catch block
49 e.printStackTrace();
50 return null;
51 }
52
53 XmlRpcClient client = new XmlRpcClient();
54 client.setConfig(config);
55 Object[] params = new Object[] { metaDataLink };
56
57 String result;
58 try {
59 result = (String) client.execute("getDCFormatted", params);
60 } catch (XmlRpcException e) {
61 // TODO Auto-generated catch block
62 logger.error("CANNOT connector to:"+converterProvider);
63 e.printStackTrace();
64 return null;
65 }
66 logger.debug("dC:"+result);
67
68 SAXBuilder db = new SAXBuilder();
69 InputStream resultStream;
70 try {
71 resultStream = new ByteArrayInputStream(result.getBytes("utf-8"));
72 } catch (UnsupportedEncodingException e) {
73 // TODO Auto-generated catch block
74 e.printStackTrace();
75 return null;
76 }
77 Document dc;
78 try {
79 dc = db.build(resultStream);
80 } catch (JDOMException e) {
81 // TODO Auto-generated catch block
82 e.printStackTrace();
83 return null;
84 } catch (IOException e) {
85 // TODO Auto-generated catch block
86 e.printStackTrace();
87 return null;
88 }
89
90 return dc.getRootElement();
91 }
92
93 public Element getContentOfMetaTag() {
94 SAXBuilder db = new SAXBuilder();
95
96 Document dc;
97 try {
98 dc = db.build(metaDataLink);
99 } catch (JDOMException e) {
100 // TODO Auto-generated catch block
101 e.printStackTrace();
102 return null;
103 } catch (IOException e) {
104 // TODO Auto-generated catch block
105 e.printStackTrace();
106 return null;
107 }
108
109 Element retElement = null;
110 try {
111 XPath xp = getXPath("//meta");
112 retElement = (Element) xp.selectSingleNode(dc);
113
114 } catch (JDOMException e) {
115 //nothing to be done
116 }
117 if (retElement==null) { // versuche noch mal mit namespace
118 try {
119
120 XPath xp = getXPath("//mpiwg:meta");
121 retElement = (Element) xp.selectSingleNode(dc);
122
123 } catch (JDOMException e) {
124 //nothing to be done
125 }
126
127 }
128 return retElement;
129 }
130
131
132 private XPath getXPath(String xpath) throws JDOMException{
133 XPath xpathResources = XPath.newInstance(xpath);
134
135 xpathResources.addNamespace("mpiwg",MPIWG);
136
137 return xpathResources;
138 }
139
140 public String getImagePathFromIndexMeta() {
141 SAXBuilder db = new SAXBuilder();
142
143 Document dc;
144 try {
145 dc = db.build(metaDataLink);
146 } catch (JDOMException e) {
147 // TODO Auto-generated catch block
148 e.printStackTrace();
149 return null;
150 } catch (IOException e) {
151 // TODO Auto-generated catch block
152 e.printStackTrace();
153 return null;
154 }
155
156 Element retElement = null;
157 try {
158 XPath xp = getXPath("//texttool/image");
159 retElement = (Element) xp.selectSingleNode(dc);
160
161 } catch (JDOMException e) {
162 //nothing to be done
163 }
164 if (retElement==null) { // versuche noch mal mit namespace
165 try {
166 XPath xp = getXPath("//mpiwg:texttool/mpiwg:image");
167 retElement = (Element) xp.selectSingleNode(dc);
168
169 } catch (JDOMException e) {
170 //nothing to be done
171 }
172
173 }
174 if (retElement==null)
175 return "";
176 return retElement.getTextTrim();
177 }
178
179 }