- added code to extract the attributes of transfomed results

java/org/slub/rosetta/dps/repository/plugin/SLUBTechnicalMetadataExtractorMediaConchPlugin.java

@@ -19,12 +19,24 @@ package org.slub.rosetta.dps.repository.plugin;
 
 import com.exlibris.core.sdk.strings.StringUtils;
 import com.exlibris.dps.sdk.techmd.MDExtractorPlugin;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.SAXException;
 
 import javax.xml.XMLConstants;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
 import javax.xml.transform.Transformer;
 import javax.xml.transform.TransformerFactory;
 import javax.xml.transform.stream.StreamResult;
 import javax.xml.transform.stream.StreamSource;
+import javax.xml.xpath.XPath;
+import javax.xml.xpath.XPathConstants;
+import javax.xml.xpath.XPathExpression;
+import javax.xml.xpath.XPathExpressionException;
+import javax.xml.xpath.XPathFactory;
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileInputStream;
@@ -173,11 +185,27 @@ public class SLUBTechnicalMetadataExtractorMediaConchPlugin implements MDExtract
         /* debug output: */
         StreamResult result = new StreamResult(temp_media_transformed_outputstream);
         transformer.transform(mediainfo_source, result);
-        /* TODO: read debugFile and return attributes */
-        attributes.put("key", "value");
-        /* */
         temp_media_transformed_outputstream.close();
         mediastream.close();
+        /* TODO: read transformed outputfile and return attributes */
+        extract_attributes_of_transformed_result(temp_media_transformed_outputfile);
+    }
+
+    private void extract_attributes_of_transformed_result(File temp_media_transformed_outputfile) throws XPathExpressionException, ParserConfigurationException, SAXException, IOException {
+        XPathFactory xPathfactory = XPathFactory.newInstance();
+        XPath xpath = xPathfactory.newXPath();
+        XPathExpression expr = xpath.compile("/mdExtractor/attributes/key");
+        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+        DocumentBuilder db = dbf.newDocumentBuilder();
+        Document temp_media_transformed_source = db.parse(temp_media_transformed_outputfile);
+        NodeList nl = (NodeList) expr.evaluate(temp_media_transformed_source, XPathConstants.NODESET);
+        int len = nl.getLength();
+        for ( int i = 0; i < len; i++ ) {
+            Node node = nl.item(i);
+            String id = String.valueOf(node.getAttributes().getNamedItem("id"));
+            String value = node.getTextContent();
+            attributes.put(id, value);
+        }
     }
 
     private void call_mediaconch(String filePath) throws Exception {
@@ -395,7 +423,7 @@ public class SLUBTechnicalMetadataExtractorMediaConchPlugin implements MDExtract
 
     @Override
     public boolean isValid() {
-        System.out.println("DEBUG: is valid=" + this.isvalid);
+        //System.out.println("DEBUG: is valid=" + this.isvalid);
         return this.isvalid;
     }
     @Override
@@ -461,8 +489,11 @@ public class SLUBTechnicalMetadataExtractorMediaConchPlugin implements MDExtract
         System.out.println("----------------------------------");
         System.out.println("getProfile:");
         System.out.println( plugin.getProfile());
-
-
+        System.out.println("----------------------------------");
+        System.out.println("getAttributeByName (summarized):");
+        for (Map.Entry m: plugin.attributes.entrySet()) {
+            System.out.println( m.getKey() + " -> " + m.getValue());
+        }
     }
 }