RE: cvs commit: jakarta-slide/src/share/org/apache/slide/extractor OfficeExtractor.java

Wed, 28 Apr 2004 07:33:26 -0700

Beat me to the punch. I was just finishing an office extractor.

Can you give me an idea of what this Extractor does, and what might be missing Daniel?

thanks,

Ryan


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Subject: cvs commit: jakarta-slide/src/share/org/apache/slide/extractor OfficeExtractor.java
Date: 28 Apr 2004 13:08:20 -0000

dflorey 2004/04/28 06:08:20

  Added:       src/share/org/apache/slide/extractor OfficeExtractor.java
  Log:
  Added MS Office metainfo extractor

Revision Changes Path
1.1 jakarta-slide/src/share/org/apache/slide/extractor/OfficeExtractor.java

  Index: OfficeExtractor.java
  ===================================================================
  package org.apache.slide.extractor;

  import java.io.InputStream;
  import java.util.*;

  import org.apache.poi.hpsf.*;
  import org.apache.poi.poifs.eventfilesystem.*;
  import org.apache.slide.util.conf.Configurable;
  import org.apache.slide.util.conf.Configuration;
  import org.apache.slide.util.conf.ConfigurationException;

/**
* The OfficeExtractor class
*
* @author <a href="mailto:[EMAIL PROTECTED]">Daniel Florey</a>
*/
public class OfficeExtractor extends AbstractPropertyExtractor implements Configurable {
protected List instructions = new ArrayList();
protected Map propertyMap = new HashMap();

        public OfficeExtractor(String uri, String contentType) {
                super(uri, contentType);
        }

public Map extract(InputStream content) throws ExtractorException {
OfficePropertiesListener listener = new OfficePropertiesListener();
try {
POIFSReader r = new POIFSReader();
r.registerListener(listener);
r.read(content);
} catch (Exception e) {
throw new ExtractorException("Exception while extracting properties in OfficeExtractor");
}
return listener.getProperties();
}

class OfficePropertiesListener implements POIFSReaderListener {

private HashMap properties = new HashMap();

                public Map getProperties() {
                                return properties;
                }

public void processPOIFSReaderEvent(POIFSReaderEvent event) {
PropertySet ps = null;
try {
ps = PropertySetFactory.create(event.getStream());
} catch (NoPropertySetStreamException ex) {
return;
} catch (Exception ex) {
throw new RuntimeException("Property set stream \"" + event.getPath() + event.getName() + "\": " + ex);
}
String eventName = event.getName().trim();
final long sectionCount = ps.getSectionCount();
List sections = ps.getSections();
int nr = 0;
for (Iterator i = sections.iterator(); i.hasNext();) {
Section sec = (Section) i.next();
int propertyCount = sec.getPropertyCount();
Property[] props = sec.getProperties();
for (int i2 = 0; i2 < props.length; i2++) {
Property p = props[i2];
int id = p.getID();
long type = p.getType();
Object value = p.getValue();
String key = eventName + "-" + nr + "-" + id;
if ( propertyMap.containsKey(key) ) {
properties.put(propertyMap.get(key), value);
}
}
}
}
}

public void configure(Configuration configuration) throws ConfigurationException {
Enumeration instructions = configuration.getConfigurations("instruction");
while (instructions.hasMoreElements()) {
Configuration extract = (Configuration)instructions.nextElement();
String property = extract.getAttribute("property");
String id = extract.getAttribute("id");
propertyMap.put(id, property);
}
}
}



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