1 files changed, 58 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/selectors/modifiedselector/EqualComparator.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/selectors/modifiedselector/EqualComparator.java
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+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/selectors/modifiedselector/EqualComparator.java
@@ -0,0 +1,58 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+
+package org.apache.tools.ant.types.selectors.modifiedselector;
+
+
+import java.util.Comparator;
+
+
+/**
+ * Simple implementation of Comparator for use in CacheSelector.
+ * compare() returns '0' (should not be selected) if both parameter
+ * are equal otherwise '1' (should be selected).
+ *
+ * @version 2003-09-13
+ * @since  Ant 1.6
+ */
+public class EqualComparator implements Comparator<Object> {
+
+    /**
+     * Implements Comparator.compare().
+     * @param o1 the first object
+     * @param o2 the second object
+     * @return 0, if both are equal, otherwise 1
+     */
+    public int compare(Object o1, Object o2) {
+        if (o1 == null) {
+            if (o2 == null) {
+                return 1;
+            }
+            return 0;
+        }
+        return (o1.equals(o2)) ? 0 : 1;
+    }
+
+    /**
+     * Override Object.toString().
+     * @return information about this comparator
+     */
+    public String toString() {
+        return "EqualComparator";
+    }
+}