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17 package org.apache.commons.functor.core.composite;
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19 import java.io.Serializable;
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21 import org.apache.commons.functor.BinaryFunction;
22 import org.apache.commons.functor.BinaryProcedure;
23 import org.apache.commons.functor.UnaryProcedure;
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30 public class TransformedBinaryProcedure<L, R> implements BinaryProcedure<L, R>, Serializable {
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34 private static final long serialVersionUID = -7559182250073101798L;
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40 private static final class Helper<X, L, R> implements BinaryProcedure<L, R>, Serializable {
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44 private static final long serialVersionUID = -4229496007094829301L;
45 private BinaryFunction<? super L, ? super R, ? extends X> function;
46 private UnaryProcedure<? super X> procedure;
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53 private Helper(BinaryFunction<? super L, ? super R, ? extends X> function,
54 UnaryProcedure<? super X> procedure) {
55 this.function = function;
56 this.procedure = procedure;
57 }
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62 public void run(L left, R right) {
63 procedure.run(function.evaluate(left, right));
64 }
65 }
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67 private final Helper<?, L, R> helper;
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75 public <X> TransformedBinaryProcedure(BinaryFunction<? super L, ? super R, ? extends X> function,
76 UnaryProcedure<? super X> procedure) {
77 this.helper = new Helper<X, L, R>(function, procedure);
78 }
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83 public final void run(L left, R right) {
84 helper.run(left, right);
85 }
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90 @Override
91 public final boolean equals(Object obj) {
92 return obj == this || obj instanceof TransformedBinaryProcedure<?, ?>
93 && equals((TransformedBinaryProcedure<?, ?>) obj);
94 }
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101 public final boolean equals(TransformedBinaryProcedure<?, ?> that) {
102 return that != null && that.helper.function.equals(this.helper.function)
103 && that.helper.procedure.equals(this.helper.procedure);
104 }
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109 @Override
110 public int hashCode() {
111 int result = "TransformedBinaryProcedure".hashCode();
112 result <<= 2;
113 result |= helper.procedure.hashCode();
114 result <<= 2;
115 result |= helper.function.hashCode();
116 return result;
117 }
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122 @Override
123 public String toString() {
124 return "TransformedBinaryProcedure<" + helper.function + "; " + helper.procedure + ">";
125 }
126 }