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WebDAV server implementations for JCR
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jackrabbit.webdav.jcr;
import org.apache.jackrabbit.server.io.IOUtil;
import org.apache.jackrabbit.webdav.DavConstants;
import org.apache.jackrabbit.webdav.DavException;
import org.apache.jackrabbit.webdav.DavLocatorFactory;
import org.apache.jackrabbit.webdav.DavResource;
import org.apache.jackrabbit.webdav.DavResourceFactory;
import org.apache.jackrabbit.webdav.DavResourceLocator;
import org.apache.jackrabbit.webdav.DavServletResponse;
import org.apache.jackrabbit.webdav.DavSession;
import org.apache.jackrabbit.webdav.MultiStatus;
import org.apache.jackrabbit.webdav.MultiStatusResponse;
import org.apache.jackrabbit.webdav.DavCompliance;
import org.apache.jackrabbit.webdav.jcr.search.SearchResourceImpl;
import org.apache.jackrabbit.webdav.jcr.transaction.TxLockManagerImpl;
import org.apache.jackrabbit.webdav.jcr.version.report.NodeTypesReport;
import org.apache.jackrabbit.webdav.jcr.version.report.LocateByUuidReport;
import org.apache.jackrabbit.webdav.jcr.version.report.RegisteredNamespacesReport;
import org.apache.jackrabbit.webdav.jcr.version.report.RepositoryDescriptorsReport;
import org.apache.jackrabbit.webdav.lock.ActiveLock;
import org.apache.jackrabbit.webdav.lock.LockDiscovery;
import org.apache.jackrabbit.webdav.lock.LockInfo;
import org.apache.jackrabbit.webdav.lock.LockManager;
import org.apache.jackrabbit.webdav.lock.Scope;
import org.apache.jackrabbit.webdav.lock.SupportedLock;
import org.apache.jackrabbit.webdav.lock.Type;
import org.apache.jackrabbit.webdav.property.DavProperty;
import org.apache.jackrabbit.webdav.property.DavPropertyName;
import org.apache.jackrabbit.webdav.property.DavPropertyNameSet;
import org.apache.jackrabbit.webdav.property.DavPropertySet;
import org.apache.jackrabbit.webdav.property.DefaultDavProperty;
import org.apache.jackrabbit.webdav.property.HrefProperty;
import org.apache.jackrabbit.webdav.property.ResourceType;
import org.apache.jackrabbit.webdav.property.DavPropertyNameIterator;
import org.apache.jackrabbit.webdav.property.DavPropertyIterator;
import org.apache.jackrabbit.webdav.search.QueryGrammerSet;
import org.apache.jackrabbit.webdav.search.SearchInfo;
import org.apache.jackrabbit.webdav.search.SearchResource;
import org.apache.jackrabbit.webdav.transaction.TransactionConstants;
import org.apache.jackrabbit.webdav.transaction.TransactionInfo;
import org.apache.jackrabbit.webdav.transaction.TransactionResource;
import org.apache.jackrabbit.webdav.transaction.TxLockManager;
import org.apache.jackrabbit.webdav.version.DeltaVConstants;
import org.apache.jackrabbit.webdav.version.DeltaVResource;
import org.apache.jackrabbit.webdav.version.OptionsInfo;
import org.apache.jackrabbit.webdav.version.OptionsResponse;
import org.apache.jackrabbit.webdav.version.SupportedMethodSetProperty;
import org.apache.jackrabbit.webdav.version.report.Report;
import org.apache.jackrabbit.webdav.version.report.ReportInfo;
import org.apache.jackrabbit.webdav.version.report.ReportType;
import org.apache.jackrabbit.webdav.version.report.SupportedReportSetProperty;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.jcr.Item;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.observation.EventListener;
import javax.jcr.observation.Event;
import javax.jcr.observation.EventIterator;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
/**
* AbstractResource provides functionality common to all
* resources.
*/
abstract class AbstractResource implements DavResource, TransactionResource,
DeltaVResource, SearchResource {
private static Logger log = LoggerFactory.getLogger(AbstractResource.class);
private static final String COMPLIANCE_CLASSES =
DavCompliance.concatComplianceClasses(new String[] {
DavCompliance._1_,
DavCompliance._2_,
DavCompliance.VERSION_CONTROL,
DavCompliance.VERSION_HISTORY,
DavCompliance.CHECKOUT_IN_PLACE,
DavCompliance.LABEL,
DavCompliance.MERGE,
DavCompliance.UPDATE,
DavCompliance.WORKSPACE
});
private final DavResourceLocator locator;
private final JcrDavSession session;
private final DavResourceFactory factory;
private TxLockManagerImpl txMgr;
private String transactionId;
protected boolean initedProps;
protected DavPropertySet properties = new DavPropertySet();
protected SupportedLock supportedLock = new SupportedLock();
protected SupportedReportSetProperty supportedReports = new SupportedReportSetProperty();
/**
* Create a new AbstractResource
*
* @param locator
* @param session
*/
AbstractResource(DavResourceLocator locator, JcrDavSession session,
DavResourceFactory factory) {
if (session == null) {
throw new IllegalArgumentException("Creating AbstractItemResource: DavSession must not be null and must provide a JCR session.");
}
this.locator = locator;
this.session = session;
this.factory = factory;
}
/**
* Returns a string listing the compliance classes for this resource as it
* is required for the DAV response header. This includes DAV 1, 2 which
* is supported by all derived classes as well as a subset of the
* classes defined by DeltaV: version-control, version-history, checkout-in-place,
* label, merge, update and workspace.
* Those compliance classes are added as required by RFC3253 since all
* all resources in the jcr-server support at least the reporting and some
* basic versioning functionality.
*
* @return string listing the compliance classes.
* @see org.apache.jackrabbit.webdav.DavResource#getComplianceClass()
*/
public String getComplianceClass() {
return COMPLIANCE_CLASSES;
}
/**
* @see org.apache.jackrabbit.webdav.DavResource#getLocator()
*/
public DavResourceLocator getLocator() {
return locator;
}
/**
* Returns the path of the underlying repository item or the item to
* be created (PUT/MKCOL). If the resource exists but does not represent
* a repository item null is returned.
*
* @return path of the underlying repository item.
* @see DavResource#getResourcePath()
* @see org.apache.jackrabbit.webdav.DavResourceLocator#getResourcePath()
*/
public String getResourcePath() {
return locator.getResourcePath();
}
/**
* @see DavResource#getHref()
* @see DavResourceLocator#getHref(boolean)
*/
public String getHref() {
return locator.getHref(isCollection());
}
/**
* @see org.apache.jackrabbit.webdav.DavResource#getPropertyNames()
*/
public DavPropertyName[] getPropertyNames() {
return getProperties().getPropertyNames();
}
/**
* @see org.apache.jackrabbit.webdav.DavResource#getProperty(org.apache.jackrabbit.webdav.property.DavPropertyName)
*/
public DavProperty getProperty(DavPropertyName name) {
return getProperties().get(name);
}
/**
* @see org.apache.jackrabbit.webdav.DavResource#getProperties()
*/
public DavPropertySet getProperties() {
if (!initedProps) {
initProperties();
}
return properties;
}
/**
* Throws {@link DavServletResponse#SC_METHOD_NOT_ALLOWED}
*
* @param property
* @throws DavException Always throws {@link DavServletResponse#SC_METHOD_NOT_ALLOWED}
* @see org.apache.jackrabbit.webdav.DavResource#setProperty(org.apache.jackrabbit.webdav.property.DavProperty)
*/
public void setProperty(DavProperty property) throws DavException {
throw new DavException(DavServletResponse.SC_METHOD_NOT_ALLOWED);
}
/**
* Throws {@link DavServletResponse#SC_METHOD_NOT_ALLOWED}
*
* @param propertyName
* @throws DavException Always throws {@link DavServletResponse#SC_METHOD_NOT_ALLOWED}
* @see org.apache.jackrabbit.webdav.DavResource#removeProperty(org.apache.jackrabbit.webdav.property.DavPropertyName)
*/
public void removeProperty(DavPropertyName propertyName) throws DavException {
throw new DavException(DavServletResponse.SC_METHOD_NOT_ALLOWED);
}
/**
* Builds a single List from the properties to set and the properties to
* remove and delegates the list to {@link #alterProperties(List)};
*
* @see DavResource#alterProperties(org.apache.jackrabbit.webdav.property.DavPropertySet, org.apache.jackrabbit.webdav.property.DavPropertyNameSet)
*/
public MultiStatusResponse alterProperties(DavPropertySet setProperties,
DavPropertyNameSet removePropertyNames)
throws DavException {
List changeList = new ArrayList();
if (removePropertyNames != null) {
DavPropertyNameIterator it = removePropertyNames.iterator();
while (it.hasNext()) {
changeList.add(it.next());
}
}
if (setProperties != null) {
DavPropertyIterator it = setProperties.iterator();
while (it.hasNext()) {
changeList.add(it.next());
}
}
return alterProperties(changeList);
}
/**
* Throws {@link DavServletResponse#SC_METHOD_NOT_ALLOWED}
*
* @see DavResource#alterProperties(List)
*/
public MultiStatusResponse alterProperties(List changeList) throws DavException {
throw new DavException(DavServletResponse.SC_METHOD_NOT_ALLOWED);
}
/**
* Throws {@link DavServletResponse#SC_METHOD_NOT_ALLOWED}
*
* @param destination
* @throws DavException Always throws {@link DavServletResponse#SC_METHOD_NOT_ALLOWED}
* @see DavResource#move(org.apache.jackrabbit.webdav.DavResource)
*/
public void move(DavResource destination) throws DavException {
throw new DavException(DavServletResponse.SC_METHOD_NOT_ALLOWED);
}
/**
* Throws {@link DavServletResponse#SC_METHOD_NOT_ALLOWED}
*
* @param destination
* @param shallow
* @throws DavException Always throws {@link DavServletResponse#SC_METHOD_NOT_ALLOWED}
* @see DavResource#copy(org.apache.jackrabbit.webdav.DavResource, boolean)
*/
public void copy(DavResource destination, boolean shallow) throws DavException {
throw new DavException(DavServletResponse.SC_METHOD_NOT_ALLOWED);
}
/**
* Returns true, if the {@link SupportedLock} property contains an entry
* with the given type and scope. By default resources allow for {@link org.apache.jackrabbit.webdav.transaction.TransactionConstants.XML_TRANSACTION
* transaction} lock only.
*
* @param type
* @param scope
* @return true if this resource may be locked by the given type and scope.
* @see DavResource#isLockable(org.apache.jackrabbit.webdav.lock.Type, org.apache.jackrabbit.webdav.lock.Scope)
*/
public boolean isLockable(Type type, Scope scope) {
return supportedLock.isSupportedLock(type, scope);
}
/**
* Returns true if this resource has a lock applied with the given type and scope.
*
* @param type
* @param scope
* @return true if this resource has a lock applied with the given type and scope.
* @see DavResource#hasLock(Type, Scope)
*/
public boolean hasLock(Type type, Scope scope) {
return getLock(type, scope) != null;
}
/**
* @see DavResource#getLock(Type, Scope)
*/
public ActiveLock getLock(Type type, Scope scope) {
ActiveLock lock = null;
if (TransactionConstants.TRANSACTION.equals(type)) {
lock = txMgr.getLock(type, scope, this);
}
return lock;
}
/**
* @see DavResource#getLocks()
* todo improve....
*/
public ActiveLock[] getLocks() {
List locks = new ArrayList();
// tx locks
ActiveLock l = getLock(TransactionConstants.TRANSACTION, TransactionConstants.LOCAL);
if (l != null) {
locks.add(l);
}
l = getLock(TransactionConstants.TRANSACTION, TransactionConstants.GLOBAL);
if (l != null) {
locks.add(l);
}
// write lock (either exclusive or session-scoped).
l = getLock(Type.WRITE, Scope.EXCLUSIVE);
if (l != null) {
locks.add(l);
} else {
l = getLock(Type.WRITE, ItemResourceConstants.EXCLUSIVE_SESSION);
if (l != null) {
locks.add(l);
}
}
return (ActiveLock[]) locks.toArray(new ActiveLock[locks.size()]);
}
/**
* @see DavResource#lock(org.apache.jackrabbit.webdav.lock.LockInfo)
*/
public ActiveLock lock(LockInfo reqLockInfo) throws DavException {
if (isLockable(reqLockInfo.getType(), reqLockInfo.getScope())) {
return txMgr.createLock(reqLockInfo, this);
} else {
throw new DavException(DavServletResponse.SC_PRECONDITION_FAILED);
}
}
/**
* Only transaction lock may be available on this resource.
*
* @param info
* @param lockToken
* @throws DavException
* @see DavResource#refreshLock(org.apache.jackrabbit.webdav.lock.LockInfo, String)
*/
public ActiveLock refreshLock(LockInfo info, String lockToken) throws DavException {
return txMgr.refreshLock(info, lockToken, this);
}
/**
* Throws {@link DavServletResponse#SC_METHOD_NOT_ALLOWED} since only transaction
* locks may be present on this resource, that need to be released by calling
* {@link TransactionResource#unlock(String, org.apache.jackrabbit.webdav.transaction.TransactionInfo)}.
*
* @param lockToken
* @throws DavException Always throws {@link DavServletResponse#SC_METHOD_NOT_ALLOWED}
*/
public void unlock(String lockToken) throws DavException {
throw new DavException(DavServletResponse.SC_PRECONDITION_FAILED);
}
/**
* @see DavResource#addLockManager(org.apache.jackrabbit.webdav.lock.LockManager)
*/
public void addLockManager(LockManager lockMgr) {
if (lockMgr instanceof TxLockManagerImpl) {
txMgr = (TxLockManagerImpl) lockMgr;
}
}
/**
* @see org.apache.jackrabbit.webdav.DavResource#getFactory()
*/
public DavResourceFactory getFactory() {
return factory;
}
//--------------------------------------------------------------------------
/**
* @see org.apache.jackrabbit.webdav.transaction.TransactionResource#getSession()
* @see org.apache.jackrabbit.webdav.observation.ObservationResource#getSession()
*/
public DavSession getSession() {
return session;
}
//--------------------------------------< TransactionResource interface >---
/**
* @see TransactionResource#init(TxLockManager, String)
*/
public void init(TxLockManager txMgr, String transactionId) {
this.txMgr = (TxLockManagerImpl) txMgr;
this.transactionId = transactionId;
}
/**
* @see TransactionResource#unlock(String, org.apache.jackrabbit.webdav.transaction.TransactionInfo)
*/
public void unlock(String lockToken, TransactionInfo tInfo) throws DavException {
txMgr.releaseLock(tInfo, lockToken, this);
}
/**
* @see TransactionResource#getTransactionId()
*/
public String getTransactionId() {
return transactionId;
}
//-------------------------------------------< DeltaVResource interface >---
/**
* @param optionsInfo
* @return object to be used in the OPTIONS response body or null
* @see DeltaVResource#getOptionResponse(org.apache.jackrabbit.webdav.version.OptionsInfo)
*/
public OptionsResponse getOptionResponse(OptionsInfo optionsInfo) {
OptionsResponse oR = null;
if (optionsInfo != null) {
oR = new OptionsResponse();
// currently only DAV:version-history-collection-set and
// DAV:workspace-collection-set is supported.
if (optionsInfo.containsElement(DeltaVConstants.XML_VH_COLLECTION_SET, DeltaVConstants.NAMESPACE)) {
String[] hrefs = new String[] {
getLocatorFromItemPath(ItemResourceConstants.VERSIONSTORAGE_PATH).getHref(true)
};
oR.addEntry(DeltaVConstants.XML_VH_COLLECTION_SET, DeltaVConstants.NAMESPACE, hrefs);
}
if (optionsInfo.containsElement(DeltaVConstants.XML_WSP_COLLECTION_SET, DeltaVConstants.NAMESPACE)) {
// workspaces cannot be created anywhere.
oR.addEntry(DeltaVConstants.XML_WSP_COLLECTION_SET, DeltaVConstants.NAMESPACE, new String[0]);
}
}
return oR;
}
/**
* @param reportInfo
* @return the requested report
* @throws DavException
* @see DeltaVResource#getReport(org.apache.jackrabbit.webdav.version.report.ReportInfo)
*/
public Report getReport(ReportInfo reportInfo) throws DavException {
if (reportInfo == null) {
throw new DavException(DavServletResponse.SC_BAD_REQUEST, "A REPORT request must provide a valid XML request body.");
}
if (!exists()) {
throw new DavException(DavServletResponse.SC_NOT_FOUND);
}
if (supportedReports.isSupportedReport(reportInfo)) {
Report report = ReportType.getType(reportInfo).createReport(this, reportInfo);
return report;
} else {
throw new DavException(DavServletResponse.SC_UNPROCESSABLE_ENTITY, "Unkown report "+ reportInfo.getReportName() +"requested.");
}
}
/**
* The JCR api does not provide methods to create new workspaces. Calling
* addWorkspace on this resource will always fail.
*
* @param workspace
* @throws DavException Always throws.
* @see DeltaVResource#addWorkspace(org.apache.jackrabbit.webdav.DavResource)
*/
public void addWorkspace(DavResource workspace) throws DavException {
throw new DavException(DavServletResponse.SC_FORBIDDEN);
}
/**
* Return an array of DavResource objects that are referenced
* by the property with the specified name.
*
* @param hrefPropertyName
* @return array of DavResources
* @throws DavException
* @see DeltaVResource#getReferenceResources(org.apache.jackrabbit.webdav.property.DavPropertyName)
*/
public DavResource[] getReferenceResources(DavPropertyName hrefPropertyName) throws DavException {
DavProperty prop = getProperty(hrefPropertyName);
if (prop == null || !(prop instanceof HrefProperty)) {
throw new DavException(DavServletResponse.SC_CONFLICT, "Unknown Href-Property '"+hrefPropertyName+"' on resource "+getResourcePath());
}
List hrefs = ((HrefProperty)prop).getHrefs();
DavResource[] refResources = new DavResource[hrefs.size()];
Iterator hrefIter = hrefs.iterator();
int i = 0;
while (hrefIter.hasNext()) {
refResources[i] = getResourceFromHref((String)hrefIter.next());
i++;
}
return refResources;
}
/**
* Retrieve the DavResource object that is represented by
* the given href String.
*
* @param href
* @return DavResource object
*/
private DavResource getResourceFromHref(String href) throws DavException {
// build a new locator: remove trailing prefix
DavResourceLocator locator = getLocator();
String prefix = locator.getPrefix();
DavResourceLocator loc = locator.getFactory().createResourceLocator(prefix, href);
// create a new resource object
try {
DavResource res;
if (getRepositorySession().itemExists(loc.getRepositoryPath())) {
res = createResourceFromLocator(loc);
} else {
throw new DavException(DavServletResponse.SC_NOT_FOUND);
}
return res;
} catch (RepositoryException e) {
throw new JcrDavException(e);
}
}
//-------------------------------------------< SearchResource interface >---
/**
* @return
* @see org.apache.jackrabbit.webdav.search.SearchResource#getQueryGrammerSet()
*/
public QueryGrammerSet getQueryGrammerSet() {
return new SearchResourceImpl(getLocator(), session).getQueryGrammerSet();
}
/**
* @param sInfo
* @return
* @throws DavException
* @see SearchResource#search(org.apache.jackrabbit.webdav.search.SearchInfo)
*/
public MultiStatus search(SearchInfo sInfo) throws DavException {
return new SearchResourceImpl(getLocator(), session).search(sInfo);
}
//--------------------------------------------------------------------------
/**
* Fill the set of default properties
*/
protected void initProperties() {
if (getDisplayName() != null) {
properties.add(new DefaultDavProperty(DavPropertyName.DISPLAYNAME, getDisplayName()));
}
if (isCollection()) {
properties.add(new ResourceType(ResourceType.COLLECTION));
// Windows XP support
properties.add(new DefaultDavProperty(DavPropertyName.ISCOLLECTION, "1"));
} else {
properties.add(new ResourceType(ResourceType.DEFAULT_RESOURCE));
// Windows XP support
properties.add(new DefaultDavProperty(DavPropertyName.ISCOLLECTION, "0"));
}
// todo: add etag
// default last modified
String lastModified = IOUtil.getLastModified(getModificationTime());
properties.add(new DefaultDavProperty(DavPropertyName.GETLASTMODIFIED, lastModified));
// default creation time
properties.add(new DefaultDavProperty(DavPropertyName.CREATIONDATE, DavConstants.creationDateFormat.format(new Date(0))));
// supported lock property
properties.add(supportedLock);
// set current lock information. If no lock is applied to this resource,
// an empty lockdiscovery will be returned in the response.
properties.add(new LockDiscovery(getLocks()));
properties.add(new SupportedMethodSetProperty(getSupportedMethods().split(",\\s")));
// DeltaV properties
properties.add(supportedReports);
// creator-displayname, comment: not value available from jcr
properties.add(new DefaultDavProperty(DeltaVConstants.CREATOR_DISPLAYNAME, null, true));
properties.add(new DefaultDavProperty(DeltaVConstants.COMMENT, null, true));
// 'workspace' property as defined by RFC 3253
String workspaceHref = getWorkspaceHref();
if (workspaceHref != null) {
properties.add(new HrefProperty(DeltaVConstants.WORKSPACE, workspaceHref, true));
}
// TODO: required supported-live-property-set
}
/**
* Create a new DavResource from the given locator.
* @param loc
* @return new DavResource
*/
protected DavResource createResourceFromLocator(DavResourceLocator loc)
throws DavException {
DavResource res = factory.createResource(loc, session);
if (res instanceof AbstractResource) {
((AbstractResource)res).transactionId = this.transactionId;
}
return res;
}
/**
* Build a DavResourceLocator from the given itemPath path.
*
* @param itemPath
* @return a new DavResourceLocator
* @see DavLocatorFactory#createResourceLocator(String, String, String)
*/
protected DavResourceLocator getLocatorFromItemPath(String itemPath) {
DavResourceLocator loc = locator.getFactory().createResourceLocator(locator.getPrefix(), locator.getWorkspacePath(), itemPath, false);
return loc;
}
/**
* Build a new {@link DavResourceLocator} from the given repository item.
*
* @param repositoryItem
* @return a new locator for the specified item.
* @see #getLocatorFromItemPath(String)
*/
protected DavResourceLocator getLocatorFromItem(Item repositoryItem) {
String itemPath = null;
try {
if (repositoryItem != null) {
itemPath = repositoryItem.getPath();
}
} catch (RepositoryException e) {
// ignore: should not occur
log.warn(e.getMessage());
}
return getLocatorFromItemPath(itemPath);
}
/**
* Shortcut for getSession().getRepositorySession()
*
* @return repository session present in the {@link #session}.
*/
protected Session getRepositorySession() {
return session.getRepositorySession();
}
/**
* Define the set of locks supported by this resource.
*
* @see org.apache.jackrabbit.webdav.lock.SupportedLock
*/
abstract protected void initLockSupport();
/**
* Define the set of reports supported by this resource.
*
* @see org.apache.jackrabbit.webdav.version.report.SupportedReportSetProperty
*/
/**
* Define the set of reports supported by this resource.
*
* @see org.apache.jackrabbit.webdav.version.report.SupportedReportSetProperty
* @see AbstractResource#initSupportedReports()
*/
protected void initSupportedReports() {
if (exists()) {
supportedReports = new SupportedReportSetProperty(new ReportType[] {
ReportType.EXPAND_PROPERTY,
NodeTypesReport.NODETYPES_REPORT,
LocateByUuidReport.LOCATE_BY_UUID_REPORT,
RegisteredNamespacesReport.REGISTERED_NAMESPACES_REPORT,
RepositoryDescriptorsReport.REPOSITORY_DESCRIPTORS_REPORT
});
}
}
/**
* Retrieve the href of the workspace the current session belongs to.
*
* @return href of the workspace
*/
abstract protected String getWorkspaceHref();
//--------------------------------------------------------------------------
/**
* Register the specified event listener with the observation manager present
* the repository session.
*
* @param listener
* @param nodePath
* @throws javax.jcr.RepositoryException
*/
void registerEventListener(EventListener listener, String nodePath) throws RepositoryException {
getRepositorySession().getWorkspace().getObservationManager().addEventListener(listener, EListener.ALL_EVENTS, nodePath, true, null, null, false);
}
/**
* Unregister the specified event listener with the observation manager present
* the repository session.
*
* @param listener
* @throws javax.jcr.RepositoryException
*/
void unregisterEventListener(EventListener listener) throws RepositoryException {
getRepositorySession().getWorkspace().getObservationManager().removeEventListener(listener);
}
//------------------------------------------------------< inner classes >---
/**
* Simple EventListener that creates a new {@link org.apache.jackrabbit.webdav.MultiStatusResponse} object
* for each event and adds it to the specified {@link org.apache.jackrabbit.webdav.MultiStatus}.
*/
class EListener implements EventListener {
private static final int ALL_EVENTS = Event.NODE_ADDED | Event.NODE_REMOVED | Event.PROPERTY_ADDED | Event.PROPERTY_CHANGED | Event.PROPERTY_REMOVED;
private final DavPropertyNameSet propNameSet;
private MultiStatus ms;
EListener(DavPropertyNameSet propNameSet, MultiStatus ms) {
this.propNameSet = propNameSet;
this.ms = ms;
}
/**
* @see EventListener#onEvent(javax.jcr.observation.EventIterator)
*/
public void onEvent(EventIterator events) {
while (events.hasNext()) {
try {
Event e = events.nextEvent();
DavResourceLocator loc = getLocatorFromItemPath(e.getPath());
DavResource res = createResourceFromLocator(loc);
ms.addResponse(new MultiStatusResponse(res, propNameSet));
} catch (DavException e) {
// should not occur
log.error("Error while building MultiStatusResponse from Event: " + e.getMessage());
} catch (RepositoryException e) {
// should not occur
log.error("Error while building MultiStatusResponse from Event: " + e.getMessage());
}
}
}
}
}