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Java > Open Source Codes > org > eclipse > core > internal > indexing > Referable


1 /*******************************************************************************
2  * Copyright (c) 2000, 2005 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.internal.indexing;
12
13 interface Referable {
14
15     /**
16      * Adds a reference for this entity to track. Returns the current count.
17      */
18     int addReference();
19
20     /**
21      * Tests for existing references.
22      */
23     boolean hasReferences();
24
25     /**
26      * Removes a reference. Returns the current count.
27      */
28     int removeReference();
29
30 }
31
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