bundles/org.eclipse.wst.html.ui/src-html-validation/org/eclipse/wst/html/internal/validation/TaskListUtility.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2001, 2005 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.html.internal.validation;

 import org.eclipse.core.resources.IMarker;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.IWorkspaceRoot;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.wst.html.ui.internal.HTMLUIPlugin;
 import org.eclipse.wst.validation.internal.provisional.core.IMessage;

 /**
  * This class must be called only by the validation framework.
  *
  * This singleton interacts with the eclipse workbench's Task list.
  * TaskListUtility adds and removes tasks from the list.
  *
  * This class must not be called outside of an IWorkspaceRunnable or
  * IRunnableWithProgress. Many resource deltas can be generated by the methods
  * in this class.
  *
  * This came from TaskListUtility
  */
 public class TaskListUtility {
 	// private static final String PLUGIN_ID = ValidationPlugin.PLUGIN_ID;
 	private static final String PLUGIN_ID = HTMLUIPlugin.ID;
 	private static final String VALIDATION_MARKER = PLUGIN_ID + ".problemmarker"; //$NON-NLS-1$ // The extension which is used to add validation markers to the task list
 	private static final String VALIDATION_MARKER_OWNER = "owner"; //$NON-NLS-1$ // The IValidator who owns the IMarker on the task list
 	private static final String VALIDATION_MARKER_SEVERITY = "validationSeverity"; //$NON-NLS-1$ // one of the IMessage values
 	private static final String VALIDATION_MARKER_TARGETOBJECT = "targetObject"; //$NON-NLS-1$ // When more than one target object resolves to the same IResource, this field identifies which targetObject owns a particular message.
 	private static final String VALIDATION_MARKER_GROUP = "groupName"; //$NON-NLS-1$ // For incremental validation, this field associates a message with a group, so that a subset of messages may be removed from a file.
 	private static final String VALIDATION_MARKER_MESSAGEID = "messageId"; //$NON-NLS-1$ // Persist the message id of the message, not just the translated text.
 	private static final int DEPTH_INFINITE = IResource.DEPTH_INFINITE;
 	private static final int DEPTH_ZERO = IResource.DEPTH_ZERO;
 	private final static IMarker[] NO_MARKERS = new IMarker[0];

 	/**
 	 * This method adds a message to a resource in the task list.
 	 */
 	public static IMarker addTask(String pluginId, IResource resource, String location, String messageId, String message, int markerType, String targetObjectName, String groupName, int offset, int length) throws CoreException {
 		if ((message == null) || (resource == null)) {
 			return null;
 		}

 		int severity = getSeverity(markerType);

 		// Allow duplicate entries in the task list.
 		// Prior to a full validation, the validation framework will remove
 		// all messages owned
 		// by a validator before it is executed.
 		// Prior to an incremental validation, the validation framework will
 		// remove all messages,
 		// on each of the changed resources, owned by a validator before it is
 		// invoked.
 		//
 		// It is up to the validator to make sure that it is not adding the
 		// same message
 		// in more than one place, and also to clear out any old messages
 		// which are not cleared
 		// by the validation framework.
 		IMarker item = resource.createMarker(VALIDATION_MARKER); // add a
 																	// validation
 																	// marker

 		// For performance reasons, replace the multiple setAttribute
 		// calls above with a single setAttributes call.
 		boolean offsetSet = ((offset != IMessage.OFFSET_UNSET) && (length != IMessage.OFFSET_UNSET));
 		int size = (offsetSet) ? 10 : 8; // add CHAR_START, CHAR_END only
 											// if the offset is set. If the
 											// offset is set, it takes
 											// precendence over the line
 											// number. (eclipse's rule, not
 											// mine.)
 		String[] attribNames = new String[size];
 		Object[] attribValues = new Object[size];

 		// Very first thing, add the owner. That way, if the code dies
 		// before things are persisted, hopefully this marker will be
 		// persisted.
 		// Hopefully, eclipse WILL persist this field, as requested.
 		attribNames[0] = VALIDATION_MARKER_OWNER;
 		attribValues[0] = pluginId;
 		attribNames[1] = VALIDATION_MARKER_SEVERITY; // this validation
 														// severity is stored,
 														// in addition to the
 														// marker severity, to
 														// enable more than
 														// one severity of
 														// message to be
 														// displayed. e.g.
 														// ERROR | WARNING
 														// (using binary OR).
 														// The IMarker
 														// constants are
 														// regular decimal
 														// constants.
 		attribValues[1] = new Integer(markerType);
 		attribNames[2] = VALIDATION_MARKER_TARGETOBJECT; // to distinguish
 															// between
 															// messages which
 															// are registered
 															// on an
 															// IResource, but
 															// against
 															// different
 															// target objects
 		attribValues[2] = ((targetObjectName == null) ? "" : targetObjectName); //$NON-NLS-1$
 		attribNames[3] = VALIDATION_MARKER_GROUP;
 		attribValues[3] = ((groupName == null) ? "" : groupName); //$NON-NLS-1$
 		attribNames[4] = IMarker.MESSAGE;
 		attribValues[4] = message;
 		attribNames[5] = VALIDATION_MARKER_MESSAGEID;
 		attribValues[5] = messageId;

 		attribNames[6] = IMarker.SEVERITY; // IMarker.SEVERITY_ERROR,
 											// IMarker.SEVERITY_WARNING,
 											// IMarker.SEVERITY_INFO
 		attribValues[6] = new Integer(severity);
 		try {
 			// If the location is a line number, store it as a line number
 			Integer lineNumber = Integer.valueOf(location);
 			attribNames[7] = IMarker.LINE_NUMBER;
 			attribValues[7] = lineNumber;
 		}
 		catch (NumberFormatException exc) {
 			// Otherwise, store it as a text location
 			attribNames[7] = IMarker.LOCATION;
 			attribValues[7] = location;
 		}

 		if (offsetSet) {
 			attribNames[8] = IMarker.CHAR_START;
 			attribValues[8] = new Integer(offset);
 			attribNames[9] = IMarker.CHAR_END;
 			attribValues[9] = new Integer(offset + length);
 		}

 		item.setAttributes(attribNames, attribValues);

 		return item;
 	}

 	/**
 	 * Given one of the SeverityEnum severities, return the IMarker severity
 	 * int that is its equivalent.
 	 */
 	private static int getSeverity(int severityEnumValue) {
 		switch (severityEnumValue) {
 			case (IMessage.HIGH_SEVERITY) : {
 				return IMarker.SEVERITY_ERROR;
 			}

 			case (IMessage.LOW_SEVERITY) : {
 				return IMarker.SEVERITY_INFO;
 			}

 			case (IMessage.NORMAL_SEVERITY) : {
 				return IMarker.SEVERITY_WARNING;
 			}

 			case (IMessage.ALL_MESSAGES) :
 			case (IMessage.ERROR_AND_WARNING) :
 			default : {
 				// assume it's a warning.
 				return IMarker.SEVERITY_WARNING;
 			}
 		}
 	}

 	private static int getDepth(IResource resource) {
 		if (resource instanceof IProject) {
 			return DEPTH_INFINITE; // DEPTH_INFINITE means get this project's
 									// markers, and the markers belonging to
 									// the project's children.
 		}
 		else if (resource instanceof IWorkspaceRoot) {
 			// Needed for the ValidationMigrator when it checks for orphan
 			// tasks.
 			return DEPTH_INFINITE; // DEPTH_INFINITE means get all of the
 									// markers in the workspace
 		}

 		return DEPTH_ZERO; // DEPTH_ZERO means just this resource, not its
 							// children
 	}

 	private static IMarker[] getValidationTasks(IResource resource, int severity, int depth) {
 		IMarker[] tempMarkers = null;
 		int validCount = 0;
 		try {
 			IMarker[] allMarkers = null;
 			try {
 				allMarkers = resource.findMarkers(VALIDATION_MARKER, false, depth); // false
 																					// means
 																					// only
 																					// consider
 																					// PROBLEM_MARKER,
 																					// not
 																					// variants
 																					// of
 																					// PROBLEM_MARKER.
 																					// Since
 																					// addTask
 																					// only
 																					// adds
 																					// PROBLEM_MARKER,
 																					// we
 																					// don't
 																					// need
 																					// to
 																					// consider
 																					// its
 																					// subtypes.
 			}
 			catch (CoreException exc) {
 				// Logger logger =
 				// ValidationPlugin.getPlugin().getMsgLogger();
 				// if (logger.isLoggingLevel(Level.SEVERE)) {
 				// LogEntry entry = ValidationPlugin.getLogEntry();
 				// entry.setSourceID("TaskListUtility.getValidationTasks(IResource,
 				// int)"); //$NON-NLS-1$
 				// entry.setTargetException(exc);
 				// logger.write(Level.SEVERE, entry);
 				// }
 				return NO_MARKERS;
 			}

 			// Now filter in the markers, based on severity type.
 			if (allMarkers.length != 0) {
 				tempMarkers = new IMarker[allMarkers.length];
 				for (int i = 0; i < allMarkers.length; i++) {
 					IMarker marker = allMarkers[i];
 					Integer filterSeverity = (Integer) marker.getAttribute(VALIDATION_MARKER_SEVERITY);
 					if (filterSeverity == null) {
 						// odd...marker wasn't created correctly. How could
 						// this happen?
 						// Default to the current severity and add it to the
 						// list.
 						try {
 							marker.setAttribute(IMarker.SEVERITY, getSeverity(severity));
 						}
 						catch (CoreException exc) {
 							// Logger logger =
 							// ValidationPlugin.getPlugin().getMsgLogger();
 							// if (logger.isLoggingLevel(Level.SEVERE)) {
 							// LogEntry entry =
 							// ValidationPlugin.getLogEntry();
 							// entry.setSourceID("TaskListUtility.getValidationTasks(int,
 							// IResource, int)"); //$NON-NLS-1$
 							// entry.setTargetException(exc);
 							// logger.write(Level.SEVERE, entry);
 							// }
 							continue;
 						}
 						catch (Throwable exc) {
 							// Logger logger =
 							// ValidationPlugin.getPlugin().getMsgLogger();
 							// if (logger.isLoggingLevel(Level.SEVERE)) {
 							// LogEntry entry =
 							// ValidationPlugin.getLogEntry();
 							// entry.setSourceID("TaskListUtility.getValidationTasks(int,
 							// IResource, int)"); //$NON-NLS-1$
 							// entry.setTargetException(exc);
 							// logger.write(Level.SEVERE, entry);
 							// }
 							continue;
 						}
 					}
 					else if ((severity & filterSeverity.intValue()) == 0) {
 						continue;
 					}
 					tempMarkers[validCount++] = marker;
 				}
 			}
 		}
 		catch (CoreException exc) {
 			// Logger logger = ValidationPlugin.getPlugin().getMsgLogger();
 			// if (logger.isLoggingLevel(Level.SEVERE)) {
 			// LogEntry entry = ValidationPlugin.getLogEntry();
 			// entry.setSourceID("TaskListUtility.getValidationTasks(int,
 			// IResource, int)"); //$NON-NLS-1$
 			// entry.setTargetException(exc);
 			// logger.write(Level.SEVERE, entry);
 			// }
 		}

 		if (validCount == 0) {
 			return NO_MARKERS;
 		}

 		IMarker[] validMarkers = new IMarker[validCount];
 		System.arraycopy(tempMarkers, 0, validMarkers, 0, validCount);
 		return validMarkers;
 	}

 	private static IMarker[] getValidationTasks(IResource resource, String[] messageOwners, int depth) {
 		IMarker[] markers = getValidationTasks(resource, IMessage.ALL_MESSAGES, depth);
 		if (markers.length == 0) {
 			return NO_MARKERS;
 		}

 		IMarker[] temp = new IMarker[markers.length];
 		int validCount = 0;
 		for (int i = 0; i < markers.length; i++) {
 			IMarker marker = markers[i];

 			try {
 				Object owner = marker.getAttribute(VALIDATION_MARKER_OWNER);
 				if ((owner == null) || !(owner instanceof String)) {
 					// The ValidationMigrator will remove any "unowned"
 					// validation markers.
 					continue;
 				}

 				for (int j = 0; j < messageOwners.length; j++) {
 					String messageOwner = messageOwners[j];
 					if (((String) owner).equals(messageOwner)) {
 						temp[validCount++] = marker;
 						break;
 					}
 				}
 			}
 			catch (CoreException exc) {
 				// Logger logger =
 				// ValidationPlugin.getPlugin().getMsgLogger();
 				// if (logger.isLoggingLevel(Level.SEVERE)) {
 				// LogEntry entry = ValidationPlugin.getLogEntry();
 				// entry.setSourceID("TaskListUtility.getValidationTasks(project,
 				// String[])"); //$NON-NLS-1$
 				// entry.setTargetException(exc);
 				// logger.write(Level.SEVERE, entry);
 				// }
 				return NO_MARKERS;
 			}
 		}

 		IMarker[] result = new IMarker[validCount];
 		System.arraycopy(temp, 0, result, 0, validCount);
 		return result;
 	}

 	/**
 	 * This method retrieves all validation tasks from the resource. If depth
 	 * is INFINITE, child tasks are returned as well. Only the tasks which are
 	 * owned by the specified messageOwner, and apply to the named IMessage's
 	 * target object (objectName) will be returned.
 	 */
 	private static IMarker[] getValidationTasks(IResource resource, String[] messageOwner, String objectName, String groupName, int depth) throws CoreException {
 		if ((messageOwner == null) || (resource == null)) {
 			return NO_MARKERS;
 		}

 		int validCount = 0;
 		IMarker[] validList = null;
 		IMarker[] markers = getValidationTasks(resource, messageOwner, depth);
 		if (markers != null) {
 			validList = new IMarker[markers.length];
 			for (int i = 0; i < markers.length; i++) {
 				IMarker marker = markers[i];

 				// If more than one target object resolves to the same
 				// resource, removing one target's
 				// messages should not remove the other target object's
 				// messages.
 				if (objectName != null) {
 					Object targetObject = marker.getAttribute(VALIDATION_MARKER_TARGETOBJECT);
 					if ((targetObject == null) || !(targetObject instanceof String) || !(((String) targetObject).equals(objectName))) {
 						continue;
 					}
 				}

 				if (groupName != null) {
 					Object group = marker.getAttribute(VALIDATION_MARKER_GROUP);
 					if ((group == null) || !(group instanceof String) || !(((String) group).equals(groupName))) {
 						continue;
 					}
 				}

 				validList[validCount++] = marker;
 			}
 		}

 		if (validCount == 0) {
 			return NO_MARKERS;
 		}

 		IMarker[] result = new IMarker[validCount];
 		System.arraycopy(validList, 0, result, 0, validCount);
 		return result;
 	}

 	/**
 	 * This method removes all messages from a resource in the task list.
 	 */
 	public static void removeAllTasks(IResource resource, String owner, String objectName) throws CoreException {
 		removeAllTasks(resource, new String[]{owner}, objectName);
 	}

 	public static void removeAllTasks(IResource resource, String[] owners, String objectName) throws CoreException {
 		removeAllTasks(resource, owners, objectName, getDepth(resource));
 	}

 	protected static void removeAllTasks(IResource resource, String[] owners, String objectName, int depth) throws CoreException {
 		removeTaskSubset(resource, owners, objectName, null, depth); // null
 																		// means
 																		// no
 																		// group
 																		// name
 	}

 	/**
 	 * This method removes a subset of tasks from the project, including child
 	 * tasks. Every task which belongs to the group, identified by groupName,
 	 * will be removed.
 	 */
 	protected static void removeTaskSubset(IResource resource, String[] owners, String objectName, String groupName, int depth) throws CoreException {
 		if ((owners == null) || (resource == null)) {
 			return;
 		}

 		IMarker[] allTasks = getValidationTasks(resource, owners, objectName, groupName, depth);
 		if (allTasks.length > 0) {
 			ResourcesPlugin.getWorkspace().deleteMarkers(allTasks);
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2001, 2005 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.html.internal.validation;

	import org.eclipse.core.resources.IMarker;
	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.IWorkspaceRoot;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.wst.html.ui.internal.HTMLUIPlugin;
	import org.eclipse.wst.validation.internal.provisional.core.IMessage;

	/**
	* This class must be called only by the validation framework.
	*
	* This singleton interacts with the eclipse workbench's Task list.
	* TaskListUtility adds and removes tasks from the list.
	*
	* This class must not be called outside of an IWorkspaceRunnable or
	* IRunnableWithProgress. Many resource deltas can be generated by the methods
	* in this class.
	*
	* This came from TaskListUtility
	*/
	public class TaskListUtility {
	// private static final String PLUGIN_ID = ValidationPlugin.PLUGIN_ID;
	private static final String PLUGIN_ID = HTMLUIPlugin.ID;
	private static final String VALIDATION_MARKER = PLUGIN_ID + ".problemmarker"; //$NON-NLS-1$ // The extension which is used to add validation markers to the task list
	private static final String VALIDATION_MARKER_OWNER = "owner"; //$NON-NLS-1$ // The IValidator who owns the IMarker on the task list
	private static final String VALIDATION_MARKER_SEVERITY = "validationSeverity"; //$NON-NLS-1$ // one of the IMessage values
	private static final String VALIDATION_MARKER_TARGETOBJECT = "targetObject"; //$NON-NLS-1$ // When more than one target object resolves to the same IResource, this field identifies which targetObject owns a particular message.
	private static final String VALIDATION_MARKER_GROUP = "groupName"; //$NON-NLS-1$ // For incremental validation, this field associates a message with a group, so that a subset of messages may be removed from a file.
	private static final String VALIDATION_MARKER_MESSAGEID = "messageId"; //$NON-NLS-1$ // Persist the message id of the message, not just the translated text.
	private static final int DEPTH_INFINITE = IResource.DEPTH_INFINITE;
	private static final int DEPTH_ZERO = IResource.DEPTH_ZERO;
	private final static IMarker[] NO_MARKERS = new IMarker[0];

	/**
	* This method adds a message to a resource in the task list.
	*/
	public static IMarker addTask(String pluginId, IResource resource, String location, String messageId, String message, int markerType, String targetObjectName, String groupName, int offset, int length) throws CoreException {
	if ((message == null) \|\| (resource == null)) {
	return null;
	}

	int severity = getSeverity(markerType);

	// Allow duplicate entries in the task list.
	// Prior to a full validation, the validation framework will remove
	// all messages owned
	// by a validator before it is executed.
	// Prior to an incremental validation, the validation framework will
	// remove all messages,
	// on each of the changed resources, owned by a validator before it is
	// invoked.
	//
	// It is up to the validator to make sure that it is not adding the
	// same message
	// in more than one place, and also to clear out any old messages
	// which are not cleared
	// by the validation framework.
	IMarker item = resource.createMarker(VALIDATION_MARKER); // add a
	// validation
	// marker

	// For performance reasons, replace the multiple setAttribute
	// calls above with a single setAttributes call.
	boolean offsetSet = ((offset != IMessage.OFFSET_UNSET) && (length != IMessage.OFFSET_UNSET));
	int size = (offsetSet) ? 10 : 8; // add CHAR_START, CHAR_END only
	// if the offset is set. If the
	// offset is set, it takes
	// precendence over the line
	// number. (eclipse's rule, not
	// mine.)
	String[] attribNames = new String[size];
	Object[] attribValues = new Object[size];

	// Very first thing, add the owner. That way, if the code dies
	// before things are persisted, hopefully this marker will be
	// persisted.
	// Hopefully, eclipse WILL persist this field, as requested.
	attribNames[0] = VALIDATION_MARKER_OWNER;
	attribValues[0] = pluginId;
	attribNames[1] = VALIDATION_MARKER_SEVERITY; // this validation
	// severity is stored,
	// in addition to the
	// marker severity, to
	// enable more than
	// one severity of
	// message to be
	// displayed. e.g.
	// ERROR \| WARNING
	// (using binary OR).
	// The IMarker
	// constants are
	// regular decimal
	// constants.
	attribValues[1] = new Integer(markerType);
	attribNames[2] = VALIDATION_MARKER_TARGETOBJECT; // to distinguish
	// between
	// messages which
	// are registered
	// on an
	// IResource, but
	// against
	// different
	// target objects
	attribValues[2] = ((targetObjectName == null) ? "" : targetObjectName); //$NON-NLS-1$
	attribNames[3] = VALIDATION_MARKER_GROUP;
	attribValues[3] = ((groupName == null) ? "" : groupName); //$NON-NLS-1$
	attribNames[4] = IMarker.MESSAGE;
	attribValues[4] = message;
	attribNames[5] = VALIDATION_MARKER_MESSAGEID;
	attribValues[5] = messageId;

	attribNames[6] = IMarker.SEVERITY; // IMarker.SEVERITY_ERROR,
	// IMarker.SEVERITY_WARNING,
	// IMarker.SEVERITY_INFO
	attribValues[6] = new Integer(severity);
	try {
	// If the location is a line number, store it as a line number
	Integer lineNumber = Integer.valueOf(location);
	attribNames[7] = IMarker.LINE_NUMBER;
	attribValues[7] = lineNumber;
	}
	catch (NumberFormatException exc) {
	// Otherwise, store it as a text location
	attribNames[7] = IMarker.LOCATION;
	attribValues[7] = location;
	}

	if (offsetSet) {
	attribNames[8] = IMarker.CHAR_START;
	attribValues[8] = new Integer(offset);
	attribNames[9] = IMarker.CHAR_END;
	attribValues[9] = new Integer(offset + length);
	}

	item.setAttributes(attribNames, attribValues);

	return item;
	}

	/**
	* Given one of the SeverityEnum severities, return the IMarker severity
	* int that is its equivalent.
	*/
	private static int getSeverity(int severityEnumValue) {
	switch (severityEnumValue) {
	case (IMessage.HIGH_SEVERITY) : {
	return IMarker.SEVERITY_ERROR;
	}

	case (IMessage.LOW_SEVERITY) : {
	return IMarker.SEVERITY_INFO;
	}

	case (IMessage.NORMAL_SEVERITY) : {
	return IMarker.SEVERITY_WARNING;
	}

	case (IMessage.ALL_MESSAGES) :
	case (IMessage.ERROR_AND_WARNING) :
	default : {
	// assume it's a warning.
	return IMarker.SEVERITY_WARNING;
	}
	}
	}

	private static int getDepth(IResource resource) {
	if (resource instanceof IProject) {
	return DEPTH_INFINITE; // DEPTH_INFINITE means get this project's
	// markers, and the markers belonging to
	// the project's children.
	}
	else if (resource instanceof IWorkspaceRoot) {
	// Needed for the ValidationMigrator when it checks for orphan
	// tasks.
	return DEPTH_INFINITE; // DEPTH_INFINITE means get all of the
	// markers in the workspace
	}

	return DEPTH_ZERO; // DEPTH_ZERO means just this resource, not its
	// children
	}

	private static IMarker[] getValidationTasks(IResource resource, int severity, int depth) {
	IMarker[] tempMarkers = null;
	int validCount = 0;
	try {
	IMarker[] allMarkers = null;
	try {
	allMarkers = resource.findMarkers(VALIDATION_MARKER, false, depth); // false
	// means
	// only
	// consider
	// PROBLEM_MARKER,
	// not
	// variants
	// of
	// PROBLEM_MARKER.
	// Since
	// addTask
	// only
	// adds
	// PROBLEM_MARKER,
	// we
	// don't
	// need
	// to
	// consider
	// its
	// subtypes.
	}
	catch (CoreException exc) {
	// Logger logger =
	// ValidationPlugin.getPlugin().getMsgLogger();
	// if (logger.isLoggingLevel(Level.SEVERE)) {
	// LogEntry entry = ValidationPlugin.getLogEntry();
	// entry.setSourceID("TaskListUtility.getValidationTasks(IResource,
	// int)"); //$NON-NLS-1$
	// entry.setTargetException(exc);
	// logger.write(Level.SEVERE, entry);
	// }
	return NO_MARKERS;
	}

	// Now filter in the markers, based on severity type.
	if (allMarkers.length != 0) {
	tempMarkers = new IMarker[allMarkers.length];
	for (int i = 0; i < allMarkers.length; i++) {
	IMarker marker = allMarkers[i];
	Integer filterSeverity = (Integer) marker.getAttribute(VALIDATION_MARKER_SEVERITY);
	if (filterSeverity == null) {
	// odd...marker wasn't created correctly. How could
	// this happen?
	// Default to the current severity and add it to the
	// list.
	try {
	marker.setAttribute(IMarker.SEVERITY, getSeverity(severity));
	}
	catch (CoreException exc) {
	// Logger logger =
	// ValidationPlugin.getPlugin().getMsgLogger();
	// if (logger.isLoggingLevel(Level.SEVERE)) {
	// LogEntry entry =
	// ValidationPlugin.getLogEntry();
	// entry.setSourceID("TaskListUtility.getValidationTasks(int,
	// IResource, int)"); //$NON-NLS-1$
	// entry.setTargetException(exc);
	// logger.write(Level.SEVERE, entry);
	// }
	continue;
	}
	catch (Throwable exc) {
	// Logger logger =
	// ValidationPlugin.getPlugin().getMsgLogger();
	// if (logger.isLoggingLevel(Level.SEVERE)) {
	// LogEntry entry =
	// ValidationPlugin.getLogEntry();
	// entry.setSourceID("TaskListUtility.getValidationTasks(int,
	// IResource, int)"); //$NON-NLS-1$
	// entry.setTargetException(exc);
	// logger.write(Level.SEVERE, entry);
	// }
	continue;
	}
	}
	else if ((severity & filterSeverity.intValue()) == 0) {
	continue;
	}
	tempMarkers[validCount++] = marker;
	}
	}
	}
	catch (CoreException exc) {
	// Logger logger = ValidationPlugin.getPlugin().getMsgLogger();
	// if (logger.isLoggingLevel(Level.SEVERE)) {
	// LogEntry entry = ValidationPlugin.getLogEntry();
	// entry.setSourceID("TaskListUtility.getValidationTasks(int,
	// IResource, int)"); //$NON-NLS-1$
	// entry.setTargetException(exc);
	// logger.write(Level.SEVERE, entry);
	// }
	}

	if (validCount == 0) {
	return NO_MARKERS;
	}

	IMarker[] validMarkers = new IMarker[validCount];
	System.arraycopy(tempMarkers, 0, validMarkers, 0, validCount);
	return validMarkers;
	}

	private static IMarker[] getValidationTasks(IResource resource, String[] messageOwners, int depth) {
	IMarker[] markers = getValidationTasks(resource, IMessage.ALL_MESSAGES, depth);
	if (markers.length == 0) {
	return NO_MARKERS;
	}

	IMarker[] temp = new IMarker[markers.length];
	int validCount = 0;
	for (int i = 0; i < markers.length; i++) {
	IMarker marker = markers[i];

	try {
	Object owner = marker.getAttribute(VALIDATION_MARKER_OWNER);
	if ((owner == null) \|\| !(owner instanceof String)) {
	// The ValidationMigrator will remove any "unowned"
	// validation markers.
	continue;
	}

	for (int j = 0; j < messageOwners.length; j++) {
	String messageOwner = messageOwners[j];
	if (((String) owner).equals(messageOwner)) {
	temp[validCount++] = marker;
	break;
	}
	}
	}
	catch (CoreException exc) {
	// Logger logger =
	// ValidationPlugin.getPlugin().getMsgLogger();
	// if (logger.isLoggingLevel(Level.SEVERE)) {
	// LogEntry entry = ValidationPlugin.getLogEntry();
	// entry.setSourceID("TaskListUtility.getValidationTasks(project,
	// String[])"); //$NON-NLS-1$
	// entry.setTargetException(exc);
	// logger.write(Level.SEVERE, entry);
	// }
	return NO_MARKERS;
	}
	}

	IMarker[] result = new IMarker[validCount];
	System.arraycopy(temp, 0, result, 0, validCount);
	return result;
	}

	/**
	* This method retrieves all validation tasks from the resource. If depth
	* is INFINITE, child tasks are returned as well. Only the tasks which are
	* owned by the specified messageOwner, and apply to the named IMessage's
	* target object (objectName) will be returned.
	*/
	private static IMarker[] getValidationTasks(IResource resource, String[] messageOwner, String objectName, String groupName, int depth) throws CoreException {
	if ((messageOwner == null) \|\| (resource == null)) {
	return NO_MARKERS;
	}

	int validCount = 0;
	IMarker[] validList = null;
	IMarker[] markers = getValidationTasks(resource, messageOwner, depth);
	if (markers != null) {
	validList = new IMarker[markers.length];
	for (int i = 0; i < markers.length; i++) {
	IMarker marker = markers[i];

	// If more than one target object resolves to the same
	// resource, removing one target's
	// messages should not remove the other target object's
	// messages.
	if (objectName != null) {
	Object targetObject = marker.getAttribute(VALIDATION_MARKER_TARGETOBJECT);
	if ((targetObject == null) \|\| !(targetObject instanceof String) \|\| !(((String) targetObject).equals(objectName))) {
	continue;
	}
	}

	if (groupName != null) {
	Object group = marker.getAttribute(VALIDATION_MARKER_GROUP);
	if ((group == null) \|\| !(group instanceof String) \|\| !(((String) group).equals(groupName))) {
	continue;
	}
	}

	validList[validCount++] = marker;
	}
	}

	if (validCount == 0) {
	return NO_MARKERS;
	}

	IMarker[] result = new IMarker[validCount];
	System.arraycopy(validList, 0, result, 0, validCount);
	return result;
	}

	/**
	* This method removes all messages from a resource in the task list.
	*/
	public static void removeAllTasks(IResource resource, String owner, String objectName) throws CoreException {
	removeAllTasks(resource, new String[]{owner}, objectName);
	}

	public static void removeAllTasks(IResource resource, String[] owners, String objectName) throws CoreException {
	removeAllTasks(resource, owners, objectName, getDepth(resource));
	}

	protected static void removeAllTasks(IResource resource, String[] owners, String objectName, int depth) throws CoreException {
	removeTaskSubset(resource, owners, objectName, null, depth); // null
	// means
	// no
	// group
	// name
	}

	/**
	* This method removes a subset of tasks from the project, including child
	* tasks. Every task which belongs to the group, identified by groupName,
	* will be removed.
	*/
	protected static void removeTaskSubset(IResource resource, String[] owners, String objectName, String groupName, int depth) throws CoreException {
	if ((owners == null) \|\| (resource == null)) {
	return;
	}

	IMarker[] allTasks = getValidationTasks(resource, owners, objectName, groupName, depth);
	if (allTasks.length > 0) {
	ResourcesPlugin.getWorkspace().deleteMarkers(allTasks);
	}
	}
	}