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Diffstat (limited to 'bundles/org.eclipse.team.core/src/org/eclipse/team/core/variants/ResourceVariantByteStore.java')
| -rw-r--r-- | bundles/org.eclipse.team.core/src/org/eclipse/team/core/variants/ResourceVariantByteStore.java | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/bundles/org.eclipse.team.core/src/org/eclipse/team/core/variants/ResourceVariantByteStore.java b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/variants/ResourceVariantByteStore.java deleted file mode 100644 index 495fceefc..000000000 --- a/bundles/org.eclipse.team.core/src/org/eclipse/team/core/variants/ResourceVariantByteStore.java +++ /dev/null @@ -1,113 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2003 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Common Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/cpl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.team.core.variants; - -import org.eclipse.core.resources.IResource; -import org.eclipse.team.core.TeamException; - -/** - * The purpose of a <code>ResourceVariantByteStore</code> is to support the caching of - * the synchronization bytes for the resource variants that represent - * a resource line-up of interest such as a version, baseline or branch. The - * cache stores bytes in order to minimize the memory footprint of the tree. It is the - * reponsibility of the client of this API to cache enough bytes to meaningfully identify - * a resource variant (and possibly create an {@link IResourceVariant} handle from them). - * <p> - * The bytes for - * a resource variant are accessed using the local handle that corresponds to the - * resource variant (using the <code>getSyncInfo</code> method). - * The potential children of a resource variant are also accessed - * by using the local handle that corresponds to the resource variant - * (using the <code>members</code> method). - * - * @since 3.0 - */ -public abstract class ResourceVariantByteStore { - - /** - * Dispose of any cached sync bytes when this cache is no longer needed. - */ - public abstract void dispose(); - - /** - * Return the bytes for the variant corresponding the given local resource. - * A return value of <code>null</code> means that no bytes have been stored - * for the resource variant. It is up to the client to determine whether - * this means that the resource variant does not exist or that it has not been - * fetched or otherwise determined yet. - * @param resource the local resource - * @return the bytes that represent the resource's variant - * @throws TeamException - */ - public abstract byte[] getBytes(IResource resource) throws TeamException; - - /** - * Set the bytes for the variant corresponding the given local resource. - * The bytes should never be <code>null</code>. If it is known that the remote - * does not exist, <code>deleteBytes(IResource)</code> should be used instead. - * If the sync bytes for the remote are stale and should be removed, - * <code>flushBytes(IResouce, int)</code> should be called. - * @param resource the local resource - * @param bytes the bytes that represent the resource's variant - * @return <code>true</code> if the bytes changed - * @throws TeamException - */ - public abstract boolean setBytes(IResource resource, byte[] bytes) throws TeamException; - - /** - * Remove the bytes from the tree for the resource variants corresponding to the - * given local resource and its descendants to the given depth. - * After the bytes are removed, <code>getBytes(resource)</code> will - * return <code>null</code> for the affected resources. - * @param resource the local resource - * @param depth the depth of the operation (one of <code>IResource.DEPTH_ZERO</code>, - * <code>IResource.DEPTH_ONE</code>, or <code>IResource.DEPTH_INFINITE</code>) - * @return <code>true</code> if there were bytes present which were removed - * @throws TeamException - */ - public abstract boolean flushBytes(IResource resource, int depth) throws TeamException; - - /** - * Method called to indicate that it is known that there is no variant associated - * with the local resource. Subclasses may handle this information in different ways. - * The <code>flush(IResource, int)</code> method should be used in the cases - * where a client wishes to remove bytes for other reason. - * @param resource the local resource - * @return <code>true</code> if this changes the bytes for the variant - */ - public abstract boolean deleteBytes(IResource resource) throws TeamException; - - /** - * Return the children of the given resource that have resource variants in this tree. - * @param resource the parent resource - * @return the members who have resource variants in this tree. - */ - public abstract IResource[] members(IResource resource) throws TeamException; - - /** - * Helper method to compare two byte arrays for equality - * @param syncBytes1 the first byte array or <code>null</code> - * @param syncBytes2 the second byte array or <code>null</code> - * @return whetehr the two arrays are equal (i.e. same content) - */ - protected boolean equals(byte[] syncBytes1, byte[] syncBytes2) { - if (syncBytes1 == null) { - return syncBytes2 == null; - } else if (syncBytes2 == null) { - return false; - } - if (syncBytes1.length != syncBytes2.length) return false; - for (int i = 0; i < syncBytes1.length; i++) { - if (syncBytes1[i] != syncBytes2[i]) return false; - } - return true; - } -} |