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Java > Open Source Codes > org > eclipse > core > expressions > ICountable


1 /*******************************************************************************
2  * Copyright (c) 2007 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.core.expressions;
12
13 import org.eclipse.core.runtime.IAdaptable;
14 import org.eclipse.core.runtime.IAdapterManager;
15
16 /**
17  * Objects that are adaptable to <code>ICountable</code> can be used
18  * as the default variable in a count expression.
19  *
20  * @see IAdaptable
21  * @see IAdapterManager
22  *
23  * @since 3.3
24  */
25 public interface ICountable {
26
27     /**
28      * Returns the number of elements.
29      *
30      * @return the number of elements
31      */
32     public int count();
33 }
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