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Change-Id: I52a325624a7f0dd652b362a9840626d6d9f3c42b

1 files changed, 100 insertions, 0 deletions

diff --git a/src/main/java/org/apache/commons/math/optimization/VectorialPointValuePair.java b/src/main/java/org/apache/commons/math/optimization/VectorialPointValuePair.java
new file mode 100644
index 0000000..13f1134
--- /dev/null
+++ b/src/main/java/org/apache/commons/math/optimization/VectorialPointValuePair.java
@@ -0,0 +1,100 @@
+/*
+ * 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.math.optimization;
+
+import java.io.Serializable;
+
+/**
+ * This class holds a point and the vectorial value of an objective function at this point.
+ * <p>This is a simple immutable container.</p>
+ * @see RealPointValuePair
+ * @see org.apache.commons.math.analysis.MultivariateVectorialFunction
+ * @version $Revision: 980981 $ $Date: 2010-07-31 00:03:04 +0200 (sam. 31 juil. 2010) $
+ * @since 2.0
+ */
+public class VectorialPointValuePair implements Serializable {
+
+    /** Serializable version identifier. */
+    private static final long serialVersionUID = 1003888396256744753L;
+
+    /** Point coordinates. */
+    private final double[] point;
+
+    /** Vectorial value of the objective function at the point. */
+    private final double[] value;
+
+    /** Build a point/objective function value pair.
+     * @param point point coordinates (the built instance will store
+     * a copy of the array, not the array passed as argument)
+     * @param value value of an objective function at the point
+     */
+    public VectorialPointValuePair(final double[] point, final double[] value) {
+        this.point = (point == null) ? null : point.clone();
+        this.value = (value == null) ? null : value.clone();
+    }
+
+    /** Build a point/objective function value pair.
+     * @param point point coordinates (the built instance will store
+     * a copy of the array, not the array passed as argument)
+     * @param value value of an objective function at the point
+     * @param copyArray if true, the input arrays will be copied, otherwise
+     * they will be referenced
+     */
+    public VectorialPointValuePair(final double[] point, final double[] value,
+                                   final boolean copyArray) {
+        this.point = copyArray ?
+                      ((point == null) ? null : point.clone()) :
+                      point;
+        this.value = copyArray ?
+                      ((value == null) ? null : value.clone()) :
+                      value;
+    }
+
+    /** Get the point.
+     * @return a copy of the stored point
+     */
+    public double[] getPoint() {
+        return (point == null) ? null : point.clone();
+    }
+
+    /** Get a reference to the point.
+     * <p>This method is provided as a convenience to avoid copying
+     * the array, the elements of the array should <em>not</em> be modified.</p>
+     * @return a reference to the internal array storing the point
+     */
+    public double[] getPointRef() {
+        return point;
+    }
+
+    /** Get the value of the objective function.
+     * @return a copy of the stored value of the objective function
+     */
+    public double[] getValue() {
+        return (value == null) ? null : value.clone();
+    }
+
+    /** Get a reference to the value of the objective function.
+     * <p>This method is provided as a convenience to avoid copying
+     * the array, the elements of the array should <em>not</em> be modified.</p>
+     * @return a reference to the internal array storing the value of the objective function
+     */
+    public double[] getValueRef() {
+        return value;
+    }
+
+}