Changeset 807 for trunk/quest-core-tasktrees/src/main/java/de/ugoe/cs/quest/tasktrees/nodeequality/NodeEquality.java

Timestamp:

09/11/12 16:45:51 (12 years ago)

Author:

pharms

Message:

• improved node equality comparison to match the principle of lexical, syntactical and semantical node equality. As a result, more condensed task trees are created.

File:

• trunk/quest-core-tasktrees/src/main/java/de/ugoe/cs/quest/tasktrees/nodeequality/NodeEquality.java (modified) (1 diff)

trunk/quest-core-tasktrees/src/main/java/de/ugoe/cs/quest/tasktrees/nodeequality/NodeEquality.java

@@ -90 +90 @@
         }
     }
+
+    /**
+     * <p>
+     * returns the common denominator of this node equality and the provided one. I.e. if one
+     * equality is e.g. syntactical and the other one only semantical, then semantical is returned.
+     * </p>
+     *
+     * @param equality the equality, to compare this with
+     * @return
+     */
+    public NodeEquality getCommonDenominator(NodeEquality otherEquality) {
+        if (this.isAtLeast(otherEquality)) {
+            return otherEquality;
+        }
+        else if (otherEquality.isAtLeast(this)) {
+            return this;
+        }
+        else {
+            return NodeEquality.UNEQUAL;
+        }
+    }
 }