[DL-Learner SVN] SF.net SVN: dl-learner:[3864] branches/hmm/components-ext/src/main/java/org /dllearner/common/index/IndexResultItem.java

[<ki...@us...>]

Revision: 3864
          http://dl-learner.svn.sourceforge.net/dl-learner/?rev=3864&view=rev
Author:   kirdie
Date:     2012-11-02 14:24:44 +0000 (Fri, 02 Nov 2012)
Log Message:
-----------
added Comparable interface, equals and hashcode.

Modified Paths:
--------------
    branches/hmm/components-ext/src/main/java/org/dllearner/common/index/IndexResultItem.java

Modified: branches/hmm/components-ext/src/main/java/org/dllearner/common/index/IndexResultItem.java
===================================================================
--- branches/hmm/components-ext/src/main/java/org/dllearner/common/index/IndexResultItem.java	2012-11-01 10:22:25 UTC (rev 3863)
+++ branches/hmm/components-ext/src/main/java/org/dllearner/common/index/IndexResultItem.java	2012-11-02 14:24:44 UTC (rev 3864)
@@ -3,7 +3,10 @@
 import java.util.Collections;
 import java.util.Map;
 
-public class IndexResultItem {
+/** Natural ordering is negated natural order of scores (highest to lowest score) if score is different, else lexical order of urls if urls are equal else lexical ordering of labels.
+ * This keeps the ordering consistent with equals and hashCode because those ignore the fields too. **/
+public class IndexResultItem implements Comparable<IndexResultItem>
+{
 	private final String uri;
 	private final String label;
 	private final float score;
@@ -26,9 +29,52 @@
 	public float getScore() {return score;}
 	public Map<String,? extends Object> getFields() {return fields;}
 	
-	@Override public String toString()
+	@Override public String toString() {return "label:" + label + "--uri:" + uri + "--fields:" + fields;}
+	
+	@Override public int compareTo(IndexResultItem item)
 	{
-		// TODO Auto-generated method stub
-		return "label:" + label + "--uri:" + uri + "--fields:" + fields;
+		int i; 
+		i = -Float.compare(this.score, item.score);
+		if(i!=0) return i;
+		i = this.uri.compareTo(item.uri);
+		if(i!=0) return i;
+		i = this.label.compareTo(item.label);		
+		return i;		
 	}
-}
+
+	@Override public int hashCode()
+	{
+		final int prime = 31;
+		int result = 1;
+//		result = prime * result + ((fields == null) ? 0 : fields.hashCode());
+		result = prime * result + ((label == null) ? 0 : label.hashCode());
+		result = prime * result + Float.floatToIntBits(score);
+		result = prime * result + ((uri == null) ? 0 : uri.hashCode());
+		return result;
+	}
+
+	@Override public boolean equals(Object obj)
+	{
+		if (this == obj) return true;
+		if (obj == null) return false;
+		if (getClass() != obj.getClass()) return false;
+		IndexResultItem other = (IndexResultItem) obj;
+//		if (fields == null)
+//		{
+//			if (other.fields != null) return false;
+//		}
+//		else if (!fields.equals(other.fields)) return false;
+		if (label == null)
+		{
+			if (other.label != null) return false;
+		}
+		else if (!label.equals(other.label)) return false;
+		if (Float.floatToIntBits(score) != Float.floatToIntBits(other.score)) return false;
+		if (uri == null)
+		{
+			if (other.uri != null) return false;
+		}
+		else if (!uri.equals(other.uri)) return false;
+		return true;
+	}	
+}
\ No newline at end of file

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