--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/servlet/src/main/java/digilib/io/DocuDirentImpl.java	Tue Apr 19 18:44:25 2011 +0200
@@ -0,0 +1,149 @@
+/*
+ * DocuDirent.java -- Abstract directory entry in a DocuDirectory
+ * 
+ * Digital Image Library servlet components
+ * 
+ * Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de)
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ * 
+ * Please read license.txt for the full details. A copy of the GPL may be found
+ * at http://www.gnu.org/copyleft/lgpl.html
+ * 
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place, Suite 330, Boston, MA 02111-1307 USA
+ * 
+ * Created on 15.09.2003 by casties
+ *  
+ */
+package digilib.io;
+
+import java.io.File;
+import java.util.Map;
+
+import org.apache.log4j.Logger;
+
+import digilib.io.FileOps.FileClass;
+import digilib.meta.MetadataMap;
+import digilib.meta.XMLMetaLoader;
+
+/**
+ * Abstract directory entry in a DocuDirectory.
+ * 
+ * @author casties
+ *  
+ */
+public abstract class DocuDirentImpl implements DocuDirent {
+
+	/** the file class of this file */
+	protected static FileClass fileClass = FileClass.NONE;
+	/** HashMap with metadata */
+	protected MetadataMap fileMeta = null;
+	/** Is the Metadata valid */
+	protected boolean metaChecked = false;
+	/** the parent directory */
+	protected Directory parent = null;
+
+	/* (non-Javadoc)
+     * @see digilib.io.DocuDirent#checkMeta()
+     */
+	public abstract void checkMeta();
+
+	/* (non-Javadoc)
+     * @see digilib.io.DocuDirent#getInput()
+     */
+	public abstract File getFile();
+
+	/* (non-Javadoc)
+     * @see digilib.io.DocuDirent#readMeta()
+     */
+	public void readMeta() {
+		if ((fileMeta != null) || (getFile() == null)) {
+			// there is already metadata or there is no file
+			return;
+		}
+		// metadata is in the file {filename}.meta
+		String fn = getFile().getAbsolutePath();
+		File mf = new File(fn + ".meta");
+		if (mf.canRead()) {
+			XMLMetaLoader ml = new XMLMetaLoader();
+			try {
+				// read meta file
+				Map<String, MetadataMap> meta = ml.loadURL(mf.getAbsolutePath());
+				if (meta == null) {
+					return;
+				}
+				fileMeta = meta.get(getName());
+			} catch (Exception e) {
+				Logger.getLogger(this.getClass()).warn("error reading file .meta", e);
+			}
+		}
+	}
+
+	/* (non-Javadoc)
+     * @see digilib.io.DocuDirent#getName()
+     */
+	public String getName() {
+		File f = getFile();
+		return (f != null) ? f.getName() : null;
+	} 
+	
+	/* (non-Javadoc)
+     * @see digilib.io.DocuDirent#getParent()
+     */
+	public Directory getParent() {
+		return parent;
+	}
+	
+	/* (non-Javadoc)
+     * @see digilib.io.DocuDirent#setParent(digilib.io.Directory)
+     */
+	public void setParent(Directory parent) {
+		this.parent = parent;
+	} 
+	
+	/* (non-Javadoc)
+     * @see digilib.io.DocuDirent#getFileMeta()
+     */
+	public MetadataMap getFileMeta() {
+		return fileMeta;
+	} 
+	
+	/* (non-Javadoc)
+     * @see digilib.io.DocuDirent#setFileMeta(digilib.io.MetadataMap)
+     */
+	public void setFileMeta(MetadataMap fileMeta) {
+		this.fileMeta = fileMeta;
+	} 
+	
+	/* (non-Javadoc)
+     * @see digilib.io.DocuDirent#isMetaChecked()
+     */
+	public boolean isMetaChecked() {
+		return metaChecked;
+	} 
+	
+	/**
+	 * @return
+	 */
+	public static FileClass getFileClass() {
+		return fileClass;
+	}
+
+	/* (non-Javadoc)
+     * @see digilib.io.DocuDirent#compareTo(java.lang.Object)
+     */
+	public int compareTo(Object arg0) {
+		if (arg0 instanceof DocuDirentImpl) {
+		    return getName().compareTo(((DocuDirent) arg0).getName());
+		} else {
+		    return getName().compareTo((String) arg0);
+		}
+	}
+
+	
+}