Author: mbenson
Date: Wed May 14 07:45:43 2008
New Revision: 656293
URL: http://svn.apache.org/viewvc?rev=656293&view=rev
Log:
add functor implementations of Algorithms algorithms
Added:
commons/sandbox/functor/branches/mjbRadicalExperimentation/src/main/java/org/apache/commons/functor/generator/FilteredGenerator.java
(with props)
Added:
commons/sandbox/functor/branches/mjbRadicalExperimentation/src/main/java/org/apache/commons/functor/generator/FilteredGenerator.java
URL:
http://svn.apache.org/viewvc/commons/sandbox/functor/branches/mjbRadicalExperimentation/src/main/java/org/apache/commons/functor/generator/FilteredGenerator.java?rev=656293&view=auto
==============================================================================
---
commons/sandbox/functor/branches/mjbRadicalExperimentation/src/main/java/org/apache/commons/functor/generator/FilteredGenerator.java
(added)
+++
commons/sandbox/functor/branches/mjbRadicalExperimentation/src/main/java/org/apache/commons/functor/generator/FilteredGenerator.java
Wed May 14 07:45:43 2008
@@ -0,0 +1,81 @@
+/*
+ * 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.commons.functor.generator;
+
+import org.apache.commons.functor.UnaryPredicate;
+import org.apache.commons.functor.UnaryProcedure;
+import org.apache.commons.functor.core.composite.ConditionalUnaryProcedure;
+
+/**
+ * Generator that filters another Generator by only passing through those
elements
+ * that are matched by a specified UnaryPredicate.
+ *
+ * @version $Revision$ $Date$
+ */
+public class FilteredGenerator extends BaseGenerator {
+ private UnaryPredicate pred;
+
+ /**
+ * Create a new FilteredGenerator.
+ * @param wrapped Generator to wrap
+ * @param pred filtering UnaryPredicate
+ */
+ public FilteredGenerator(Generator wrapped, UnaryPredicate pred) {
+ super(wrapped);
+ if (wrapped == null) {
+ throw new IllegalArgumentException("Generator argument was null");
+ }
+ if (pred == null) {
+ throw new IllegalArgumentException("UnaryPredicate argument was
null");
+ }
+ this.pred = pred;
+ }
+
+ /**
+ * [EMAIL PROTECTED]
+ */
+ public void run(UnaryProcedure proc) {
+ getWrappedGenerator().run(new ConditionalUnaryProcedure(pred, proc));
+ }
+
+ /**
+ * [EMAIL PROTECTED]
+ */
+ public boolean equals(Object obj) {
+ if (obj == this) {
+ return true;
+ }
+ if (obj instanceof FilteredGenerator == false) {
+ return false;
+ }
+ FilteredGenerator other = (FilteredGenerator) obj;
+ return other.getWrappedGenerator().equals(getWrappedGenerator()) &&
other.pred.equals(pred);
+ }
+
+ /**
+ * [EMAIL PROTECTED]
+ */
+ public int hashCode() {
+ int result = "FilteredGenerator".hashCode();
+ result <<= 2;
+ Generator gen = getWrappedGenerator();
+ result ^= gen == null ? 0 : gen.hashCode();
+ result <<= 2;
+ result ^= pred == null ? 0 : pred.hashCode();
+ return result;
+ }
+}
Propchange:
commons/sandbox/functor/branches/mjbRadicalExperimentation/src/main/java/org/apache/commons/functor/generator/FilteredGenerator.java
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