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| <h2 title="Interface DoubleArray" class="title">Interface DoubleArray</h2> |
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| <pre>public interface <span class="typeNameLabel">DoubleArray</span></pre> |
| <div class="block">Provides a standard interface for double arrays. Allows different |
| array implementations to support various storage mechanisms |
| such as automatic expansion, contraction, and array "rolling".</div> |
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| <h3>Method Summary</h3> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/openejb/math/util/DoubleArray.html#addElement-double-">addElement</a></span>(double value)</code> |
| <div class="block">Adds an element to the end of this expandable array</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/openejb/math/util/DoubleArray.html#addElementRolling-double-">addElementRolling</a></span>(double value)</code> |
| <div class="block"> |
| Adds an element to the end of the array and removes the first |
| element in the array.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/openejb/math/util/DoubleArray.html#clear--">clear</a></span>()</code> |
| <div class="block">Clear the double array</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/openejb/math/util/DoubleArray.html#getElement-int-">getElement</a></span>(int index)</code> |
| <div class="block">Returns the element at the specified index.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>double[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/openejb/math/util/DoubleArray.html#getElements--">getElements</a></span>()</code> |
| <div class="block">Returns a double[] array containing the elements of this |
| <code>DoubleArray</code>.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/openejb/math/util/DoubleArray.html#getNumElements--">getNumElements</a></span>()</code> |
| <div class="block">Returns the number of elements currently in the array.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/openejb/math/util/DoubleArray.html#setElement-int-double-">setElement</a></span>(int index, |
| double value)</code> |
| <div class="block">Sets the element at the specified index.</div> |
| </td> |
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| <h4>getNumElements</h4> |
| <pre>int getNumElements()</pre> |
| <div class="block">Returns the number of elements currently in the array. Please note |
| that this may be different from the length of the internal storage array.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>number of elements</dd> |
| </dl> |
| </li> |
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| <h4>getElement</h4> |
| <pre>double getElement(int index)</pre> |
| <div class="block">Returns the element at the specified index. Note that if an |
| out of bounds index is supplied a ArrayIndexOutOfBoundsException |
| will be thrown.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>index</code> - index to fetch a value from</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>value stored at the specified index</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.ArrayIndexOutOfBoundsException</code> - if <code>index</code> is less than |
| zero or is greater than <code>getNumElements() - 1</code>.</dd> |
| </dl> |
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| <h4>setElement</h4> |
| <pre>void setElement(int index, |
| double value)</pre> |
| <div class="block">Sets the element at the specified index. If the specified index is greater than |
| <code>getNumElements() - 1</code>, the <code>numElements</code> property |
| is increased to <code>index +1</code> and additional storage is allocated |
| (if necessary) for the new element and all (uninitialized) elements |
| between the new element and the previous end of the array).</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>index</code> - index to store a value in</dd> |
| <dd><code>value</code> - value to store at the specified index</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.ArrayIndexOutOfBoundsException</code> - if <code>index</code> is less than |
| zero.</dd> |
| </dl> |
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| <h4>addElement</h4> |
| <pre>void addElement(double value)</pre> |
| <div class="block">Adds an element to the end of this expandable array</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>value</code> - to be added to end of array</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>addElementRolling</h4> |
| <pre>double addElementRolling(double value)</pre> |
| <div class="block"><p> |
| Adds an element to the end of the array and removes the first |
| element in the array. Returns the discarded first element. |
| The effect is similar to a push operation in a FIFO queue. |
| |
| <p> |
| Example: If the array contains the elements 1, 2, 3, 4 (in that order) |
| and addElementRolling(5) is invoked, the result is an array containing |
| the entries 2, 3, 4, 5 and the value returned is 1.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>value</code> - the value to be added to the array</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the value which has been discarded or "pushed" out of the array |
| by this rolling insert</dd> |
| </dl> |
| </li> |
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| <h4>getElements</h4> |
| <pre>double[] getElements()</pre> |
| <div class="block">Returns a double[] array containing the elements of this |
| <code>DoubleArray</code>. If the underlying implementation is |
| array-based, this method should always return a copy, rather than a |
| reference to the underlying array so that changes made to the returned |
| array have no effect on the <code>DoubleArray.</code></div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>all elements added to the array</dd> |
| </dl> |
| </li> |
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| <h4>clear</h4> |
| <pre>void clear()</pre> |
| <div class="block">Clear the double array</div> |
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