diff options
Diffstat (limited to 'plugins/org.eclipse.wst.common.modulecore/modulecore-src/org/eclipse/wst/common/componentcore/internal/resources/ResourceTimestampMappings.java')
| -rw-r--r-- | plugins/org.eclipse.wst.common.modulecore/modulecore-src/org/eclipse/wst/common/componentcore/internal/resources/ResourceTimestampMappings.java | 279 |
1 files changed, 0 insertions, 279 deletions
diff --git a/plugins/org.eclipse.wst.common.modulecore/modulecore-src/org/eclipse/wst/common/componentcore/internal/resources/ResourceTimestampMappings.java b/plugins/org.eclipse.wst.common.modulecore/modulecore-src/org/eclipse/wst/common/componentcore/internal/resources/ResourceTimestampMappings.java deleted file mode 100644 index 47710ab04..000000000 --- a/plugins/org.eclipse.wst.common.modulecore/modulecore-src/org/eclipse/wst/common/componentcore/internal/resources/ResourceTimestampMappings.java +++ /dev/null @@ -1,279 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2003, 2006 IBM Corporation 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: - * IBM Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.wst.common.componentcore.internal.resources; - -import java.util.HashMap; -import java.util.Map; - -import org.eclipse.core.resources.IFile; -import org.eclipse.core.resources.IProject; -import org.eclipse.core.resources.IResource; -import org.eclipse.core.runtime.IPath; -import org.eclipse.core.runtime.Path; - - -/** - * Maps resources to cached data and remembers when the data was cached based on a timestamp - * signature of a given resource. - * - */ -public class ResourceTimestampMappings { - - private static final IPath COMPONENT_MANIFEST_PATH = new Path(".settings/org.eclipse.wst.common.component"); - private static final IPath FACET_CONFIG_PATH = new Path(".settings/org.eclipse.wst.common.project.facet.core.xml"); - - private static final Object NO_DATA = new Object(); - private static final Object ERROR = new Object(); - - private final Map timestamps = new HashMap(); - private final Map data = new HashMap(); - - - /** - * Record a timestamp signature for the given resource. - * <p> - * Clients may use {@link #hasChanged(IResource)} to determine if the resource has changed since - * it was recorded. - * </p> - * - * @param resource - * The resource that was processed. - * @return True if the recording was successfull. The recording may fail if the resource does - * not exist. - * - * @see #hasChanged(IResource) - */ - public synchronized boolean mark(IResource resource) { - return mark(resource, NO_DATA); - } - - /** - * Cache the data that was determined when processing the resource. The a timestamp signature - * will be recorded for the resource as well. - * - * <p> - * Clients may use {@link #hasChanged(IResource)} to determine if the cached data should be - * replaced. - * </p> - * - * @param resource - * The resource that was processed. - * @param cachedData - * The data that was determined when the Resource was processed. - * - * @return True if the recording was successfull. The recording may fail if the resource does - * not exist. - * - * - * @see #hasChanged(IResource) - * @see #hasCacheData(IResource) - */ - public synchronized boolean mark(IResource resource, Object cachedData) { - - if (resource.getModificationStamp() != IResource.NULL_STAMP) { - if (timestamps.containsKey(resource)) { - TimestampSignature signature = (TimestampSignature) timestamps.get(resource); - signature.update(resource); - } else { - timestamps.put(resource, createTimestampSignature(resource)); - } - data.put(resource, cachedData); - return true; - } - return false; - } - - /** - * Note that an error occurred when processing this resource. - * - * @param resource - * The resource that had some sort of error while processing. - * @return True if the error was recorded. The error may not be recorded if the resource does - * not exist. - * @see #hasCacheError(IResource) - */ - public synchronized boolean markError(IResource resource) { - - if (resource.getModificationStamp() != IResource.NULL_STAMP) { - if (timestamps.containsKey(resource)) { - TimestampSignature signature = (TimestampSignature) timestamps.get(resource); - signature.update(resource); - } else { - timestamps.put(resource, createTimestampSignature(resource)); - } - data.put(resource, ERROR); - return true; - } - return false; - } - - /** - * - * @param resource - * The resource that was or is about to be processed. - * @return True if the given resource has changed in a noticeable way since it was marked. - * - * @see #mark(IResource) - * @see #mark(IResource, Object) - * @see #markError(IResource) - */ - public boolean hasChanged(IResource resource) { - TimestampSignature signature = (TimestampSignature) timestamps.get(resource); - return signature == null || signature.hasChanged(resource); - } - - /** - * - * @param resource - * The resource that was or is about to be processed. - * @return True if there is any data cached for the given resource. - * - * @see #mark(IResource) - * @see #mark(IResource, Object) - * @see #markError(IResource) - */ - public boolean hasCacheData(IResource resource) { - Object datum = data.get(resource); - return datum != null && datum != NO_DATA; - - } - - - /** - * - * @param resource - * The resource that was or is about to be processed. - * @return True if there is any data cached for the given resource. - * - * @see #mark(IResource) - * @see #mark(IResource, Object) - * @see #markError(IResource) - */ - public boolean hasCacheError(IResource resource) { - return data.get(resource) == ERROR; - } - - public Object getData(IResource resource) { - Object datum = data.get(resource); - if (datum != NO_DATA) - return datum; - return null; - } - - - private TimestampSignature createTimestampSignature(IResource resource) { - switch (resource.getType()) { - case IResource.PROJECT : - return new ProjectTimestamp((IProject) resource); - default : - return new SimpleResourceTimestamp(resource); - } - } - - /** - * Provides a point in time signature of a Resource to determine whether that resource has - * changed in a meaningful way since the time this signature was created or last updated. - * - */ - public interface TimestampSignature { - - /** - * - * @param resource - * A resource related to this signature - * @return True if the current resource is different from this signature in a meaningful way - */ - boolean hasChanged(IResource resource); - - /** - * - * @param resource - * Update the signature details to the given resource's signature. - */ - void update(IResource resource); - - } - - /** - * Provides a signature based on the modificationStamp of a resource. - */ - public class SimpleResourceTimestamp implements TimestampSignature { - private long timestamp = 0; - - public SimpleResourceTimestamp(IResource resource) { - update(resource); - } - - public boolean hasChanged(IResource resource) { - return timestamp != resource.getModificationStamp(); - } - - public void update(IResource resource) { - timestamp = resource.getModificationStamp(); - } - } - - /** - * Provides a signature for a project based on the modificationStamp of the (1) project, (2) the - * component manifest, and (3) the facet configuration - */ - public class ProjectTimestamp implements TimestampSignature { - - private long projectTimestamp = 0; - private long componentManifestTimestamp = 0; - private long facetConfigTimestamp = 0; - - public ProjectTimestamp(IProject project) { - update(project); - } - - public boolean hasChanged(IResource resource) { - if (resource.getType() == IResource.PROJECT) { - IProject project = (IProject) resource; - if (projectTimestamp != project.getModificationStamp()) - return true; - - IFile file = project.getFile(COMPONENT_MANIFEST_PATH); - if (!file.exists() || componentManifestTimestamp != file.getModificationStamp()) - return true; - - file = project.getFile(FACET_CONFIG_PATH); - if (!file.exists() || facetConfigTimestamp != file.getModificationStamp()) - return true; - - return false; - } - return true; - - } - - public void update(IResource resource) { - - if (resource instanceof IProject) { - - IProject project = (IProject) resource; - - projectTimestamp = project.getModificationStamp(); - - IFile file = project.getFile(COMPONENT_MANIFEST_PATH); - componentManifestTimestamp = file.getModificationStamp(); - - file = project.getFile(FACET_CONFIG_PATH); - facetConfigTimestamp = file.getModificationStamp(); - - } else { - projectTimestamp = componentManifestTimestamp = facetConfigTimestamp = IResource.NULL_STAMP; - } - - } - } - -} |