1 files changed, 48 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/selectors/modifiedselector/Algorithm.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/selectors/modifiedselector/Algorithm.java
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--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/selectors/modifiedselector/Algorithm.java
@@ -0,0 +1,48 @@
+/*
+ *  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.io.File;
+
+
+/**
+ * The <i>Algorithm</i> defines how a value for a file is computed.
+ * It must be sure that multiple calls for the same file results in the
+ * same value.
+ * The implementing class should implement a useful toString() method.
+ *
+ * @version 2003-09-13
+ * @since  Ant 1.6
+ */
+public interface Algorithm {
+
+    /**
+     * Checks its prerequisites.
+     * @return <i>true</i> if all is ok, otherwise <i>false</i>.
+     */
+    boolean isValid();
+
+    /**
+     * Get the value for a file.
+     * @param file    File object for which the value should be evaluated.
+     * @return        The value for that file
+     */
+    String getValue(File file);
+}