--- a/servlet/src/digilib/io/ImageFile.java	Tue Dec 21 10:05:54 2010 +0100
+++ b/servlet/src/digilib/io/ImageFile.java	Tue Dec 21 12:16:33 2010 +0100
@@ -29,7 +29,7 @@
 /**
  * @author casties
  */
-public class ImageFile implements ImageInput {
+public class ImageFile extends ImageInput {
 	
 	// file name
 	private String filename = null;
@@ -37,10 +37,6 @@
 	private ImageFileset parent = null;
 	// parent directory
 	private Directory dir = null;
-	// mime file type
-	private String mimetype = null;
-	// image size in pixels
-	private ImageSize pixelSize = null;
 
 	public ImageFile(String fn, ImageFileset parent, Directory dir) {
 		this.filename = fn;
@@ -61,11 +57,6 @@
 		return true;
 	}
 
-	@Override
-	public boolean hasStream() {
-		return false;
-	}
-
 	/** Returns the file name (without path).
 	 * 
 	 * @return
@@ -87,42 +78,6 @@
 		return f;
 	}
 
-	/* (non-Javadoc)
-	 * @see digilib.io.ImageInput#getSize()
-	 */
-	@Override
-	public ImageSize getSize() {
-		return pixelSize;
-	}
-
-	/* (non-Javadoc)
-	 * @see digilib.io.ImageInput#getMimetype()
-	 */
-	@Override
-	public String getMimetype() {
-		return mimetype;
-	}
-
-	/* (non-Javadoc)
-	 * @see digilib.io.ImageInput#setSize(digilib.image.ImageSize)
-	 */
-	@Override
-	public void setSize(ImageSize imageSize) {
-		this.pixelSize = imageSize;
-		// pass on to parent
-		if (this.parent != null) {
-			this.parent.setAspect(imageSize);
-		}
-	}
-
-	/* (non-Javadoc)
-	 * @see digilib.io.ImageInput#setMimetype(java.lang.String)
-	 */
-	@Override
-	public void setMimetype(String filetype) {
-		this.mimetype = filetype;
-	}
-
 	/**
 	 * @return ImageFileset
 	 */
@@ -139,24 +94,14 @@
 	}
 
 	/* (non-Javadoc)
-	 * @see digilib.io.ImageInput#isChecked()
+	 * @see digilib.io.ImageInput#setSize(digilib.image.ImageSize)
 	 */
-	@Override
-	public boolean isChecked() {
-		return (pixelSize != null);
-	}
-	
-	/* (non-Javadoc)
-	 * @see digilib.io.ImageInput#getAspect()
-	 */
-	@Override
-	public float getAspect() {
-		return (pixelSize != null) ? pixelSize.getAspect() : 0;
-	}
-
-	@Override
-	public InputStream getStream() {
-		return null;
+	public void setSize(ImageSize imageSize) {
+		this.pixelSize = imageSize;
+		// pass on to parent
+		if (this.parent != null) {
+			this.parent.setAspect(imageSize);
+		}
 	}
 
 }

--- a/servlet/src/digilib/io/ImageInput.java	Tue Dec 21 10:05:54 2010 +0100
+++ b/servlet/src/digilib/io/ImageInput.java	Tue Dec 21 12:16:33 2010 +0100
@@ -26,62 +26,87 @@
 
 import digilib.image.ImageSize;
 
-public interface ImageInput {
+public abstract class ImageInput {
+
+	// mime file type
+	protected String mimetype = null;
+	// image size in pixels
+	protected ImageSize pixelSize = null;
+
+	/** Returns if this ImageInput is File-based.
+	 * @return
+	 */
+	public boolean hasFile() {
+		return false;
+	}
+	
+	/** Returns the underlying File (if applicable)
+	 * 
+	 * @return
+	 */
+	public File getFile() {
+		return null;
+	}
+
+	/** Returns if this ImageInput is Stream-based.
+	 * @return
+	 */
+	public boolean hasStream() {
+		return false;
+	}
+
+	/** Returns the underlying Stream (if applicable)
+	 * 
+	 * @return
+	 */
+	public InputStream getStream() {
+		return null;
+	}
 
 	/**
 	 * @return ImageSize
 	 */
-	public abstract ImageSize getSize();
-
-	/**
-	 * @return String
-	 */
-	public abstract String getMimetype();
+	public ImageSize getSize() {
+		return pixelSize;
+	}
 
 	/**
 	 * Sets the imageSize.
 	 * @param imageSize The imageSize to set
 	 */
-	public abstract void setSize(ImageSize imageSize);
+	public void setSize(ImageSize imageSize) {
+		this.pixelSize = imageSize;
+	}
+
+	/**
+	 * @return String
+	 */
+	public String getMimetype() {
+		return mimetype;
+	}
 
 	/**
 	 * Sets the mimetype.
 	 * @param mimetype The mimetype to set
 	 */
-	public abstract void setMimetype(String filetype);
+	public void setMimetype(String filetype) {
+		this.mimetype = filetype;
+	}
 
 	/** returns if this image has been checked 
 	 * (i.e. has size and mimetype) 
 	 * @return boolean
 	 */
-	public abstract boolean isChecked();
-
+	public boolean isChecked() {
+		return (pixelSize != null);
+	}
+	
 	/** Returns the aspect ratio of the image (width/height).
 	 * 
 	 * @return
 	 */
-	public abstract float getAspect();
-
-	/** Returns if this ImageInput is File-based.
-	 * @return
-	 */
-	public abstract boolean hasFile();
-	
-	/** Returns the underlying File (if applicable)
-	 * 
-	 * @return
-	 */
-	public abstract File getFile();
-
-	/** Returns the underlying Stream (if applicable)
-	 * 
-	 * @return
-	 */
-	public abstract InputStream getStream();
-
-	/** Returns if this ImageInput is Stream-based.
-	 * @return
-	 */
-	public abstract boolean hasStream();
+	public float getAspect() {
+		return (pixelSize != null) ? pixelSize.getAspect() : 0;
+	}
 	
 }
\ No newline at end of file