| /******************************************************************************* |
| * Copyright (c) 2005, 2006 QNX Software Systems and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * QNX - Initial API and implementation |
| * Markus Schorn (Wind River Systems) |
| *******************************************************************************/ |
| package org.eclipse.rephraserengine.internal.db.org.eclipse.cdt.internal.core.pdom.db; |
| |
| import org.eclipse.core.runtime.CoreException; |
| |
| /** |
| * @author Doug Schaefer |
| * |
| * The visitor visits all records where compare returns 0. |
| */ |
| public interface IBTreeVisitor { |
| |
| /** |
| * Compare the record against an internally held key. The comparison must be |
| * compatible with the one used for the btree. |
| * Used for visiting. |
| * |
| * @param record |
| * @return -1 if record < key, 0 if record == key, 1 if record > key |
| * @throws IOException |
| */ |
| public abstract int compare(int record) throws CoreException; |
| |
| /** |
| * Visit a given record and return whether to continue or not. |
| |
| * @return <code>true</code> to continue the visit, <code>false</code> to abort it. |
| * @throws IOException |
| */ |
| public abstract boolean visit(int record) throws CoreException; |
| |
| } |
