Coverage Report

Coverage Report - org.apache.commons.functor.adapter.IgnoreLeftFunction

Classes in this File

Line Coverage

Branch Coverage

Complexity

IgnoreLeftFunction

92%

13/14

70%

14/20

2.143

 /*
  * 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.adapter;
 
 import java.io.Serializable;
 
 import org.apache.commons.functor.BinaryFunction;
 import org.apache.commons.functor.UnaryFunction;
 
 /**
  * Adapts a
  * {@link UnaryFunction UnaryFunction}
  * to the
  * {@link BinaryFunction BinaryFunction} interface
  * by ignoring the first binary argument.
  * <p/>
  * Note that although this class implements
  * {@link Serializable}, a given instance will
  * only be truly <code>Serializable</code> if the
  * underlying functor is.  Attempts to serialize
  * an instance whose delegate is not
  * <code>Serializable</code> will result in an exception.
  *
  * @param <L> the left argument type.
  * @param <R> the right argument type.
  * @param <T> the returned value type.
  * @version $Revision: 1157610 $ $Date: 2011-08-14 21:44:17 +0200 (Sun, 14 Aug 2011) $
  * @author Rodney Waldhoff
  */
 public final class IgnoreLeftFunction<L, R, T> implements BinaryFunction<L, R, T>, Serializable {
     /**
      * serialVersionUID declaration.
      */
     private static final long serialVersionUID = 4677703245851183542L;
     /** The {@link UnaryFunction UnaryFunction} I'm wrapping. */
     private final UnaryFunction<? super R, ? extends T> function;
 
     /**
      * Create a new IgnoreLeftFunction.
      * @param function UnaryFunction for right argument
      */
     public IgnoreLeftFunction(UnaryFunction<? super R, ? extends T> function) {
         if (function == null) {
             throw new IllegalArgumentException("UnaryFunction argument was null");
         }
         this.function = function;
     }
 
     /**
      * {@inheritDoc}
      */
     public T evaluate(L left, R right) {
         return function.evaluate(right);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean equals(Object that) {
         return that == this || (that instanceof IgnoreLeftFunction<?, ?, ?>
                 && equals((IgnoreLeftFunction<?, ?, ?>) that));
     }
 
     /**
      * Learn whether another IgnoreLeftFunction is equal to this.
      * @param that IgnoreLeftFunction to test
      * @return boolean
      */
     public boolean equals(IgnoreLeftFunction<?, ?, ?> that) {
         return null != that && (null == function ? null == that.function : function.equals(that.function));
     }
 
     /**
      * {@inheritDoc}
      */
     public int hashCode() {
         int hash = "IgnoreLeftFunction".hashCode();
         if (null != function) {
             hash ^= function.hashCode();
         }
         return hash;
     }
 
     /**
      * {@inheritDoc}
      */
     public String toString() {
         return "IgnoreLeftFunction<" + function + ">";
     }
 
     /**
      * Adapt a UnaryFunction to the BinaryFunction interface.
      * @param <L> left type
      * @param <R> right type
      * @param <T> result type
      * @param function to adapt
      * @return IgnoreLeftFunction
      */
     public static <L, R, T> IgnoreLeftFunction<L, R, T> adapt(UnaryFunction<? super R, ? extends T> function) {
         return null == function ? null : new IgnoreLeftFunction<L, R, T>(function);
     }
 
 }

1		/*
2		* Licensed to the Apache Software Foundation (ASF) under one or more
3		* contributor license agreements. See the NOTICE file distributed with
4		* this work for additional information regarding copyright ownership.
5		* The ASF licenses this file to You under the Apache License, Version 2.0
6		* (the "License"); you may not use this file except in compliance with
7		* the License. You may obtain a copy of the License at
8		*
9		* http://www.apache.org/licenses/LICENSE-2.0
10		*
11		* Unless required by applicable law or agreed to in writing, software
12		* distributed under the License is distributed on an "AS IS" BASIS,
13		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14		* See the License for the specific language governing permissions and
15		* limitations under the License.
16		*/
17		package org.apache.commons.functor.adapter;
18
19		import java.io.Serializable;
20
21		import org.apache.commons.functor.BinaryFunction;
22		import org.apache.commons.functor.UnaryFunction;
23
24		/**
25		* Adapts a
26		* {@link UnaryFunction UnaryFunction}
27		* to the
28		* {@link BinaryFunction BinaryFunction} interface
29		* by ignoring the first binary argument.
30		* <p/>
31		* Note that although this class implements
32		* {@link Serializable}, a given instance will
33		* only be truly <code>Serializable</code> if the
34		* underlying functor is. Attempts to serialize
35		* an instance whose delegate is not
36		* <code>Serializable</code> will result in an exception.
37		*
38		* @param <L> the left argument type.
39		* @param <R> the right argument type.
40		* @param <T> the returned value type.
41		* @version $Revision: 1157610 $ $Date: 2011-08-14 21:44:17 +0200 (Sun, 14 Aug 2011) $
42		* @author Rodney Waldhoff
43		*/
44		public final class IgnoreLeftFunction<L, R, T> implements BinaryFunction<L, R, T>, Serializable {
45		/**
46		* serialVersionUID declaration.
47		*/
48		private static final long serialVersionUID = 4677703245851183542L;
49		/** The {@link UnaryFunction UnaryFunction} I'm wrapping. */
50		private final UnaryFunction<? super R, ? extends T> function;
51
52		/**
53		* Create a new IgnoreLeftFunction.
54		* @param function UnaryFunction for right argument
55		*/
56	44	public IgnoreLeftFunction(UnaryFunction<? super R, ? extends T> function) {
57	44	if (function == null) {
58	0	throw new IllegalArgumentException("UnaryFunction argument was null");
59		}
60	44	this.function = function;
61	44	}
62
63		/**
64		* {@inheritDoc}
65		*/
66		public T evaluate(L left, R right) {
67	110	return function.evaluate(right);
68		}
69
70		/**
71		* {@inheritDoc}
72		*/
73		public boolean equals(Object that) {
74	118	return that == this \|\| (that instanceof IgnoreLeftFunction<?, ?, ?>
75		&& equals((IgnoreLeftFunction<?, ?, ?>) that));
76		}
77
78		/**
79		* Learn whether another IgnoreLeftFunction is equal to this.
80		* @param that IgnoreLeftFunction to test
81		* @return boolean
82		*/
83		public boolean equals(IgnoreLeftFunction<?, ?, ?> that) {
84	34	return null != that && (null == function ? null == that.function : function.equals(that.function));
85		}
86
87		/**
88		* {@inheritDoc}
89		*/
90		public int hashCode() {
91	182	int hash = "IgnoreLeftFunction".hashCode();
92	182	if (null != function) {
93	182	hash ^= function.hashCode();
94		}
95	182	return hash;
96		}
97
98		/**
99		* {@inheritDoc}
100		*/
101		public String toString() {
102	118	return "IgnoreLeftFunction<" + function + ">";
103		}
104
105		/**
106		* Adapt a UnaryFunction to the BinaryFunction interface.
107		* @param <L> left type
108		* @param <R> right type
109		* @param <T> result type
110		* @param function to adapt
111		* @return IgnoreLeftFunction
112		*/
113		public static <L, R, T> IgnoreLeftFunction<L, R, T> adapt(UnaryFunction<? super R, ? extends T> function) {
114	30	return null == function ? null : new IgnoreLeftFunction<L, R, T>(function);
115		}
116
117		}