@Override
public synchronized void register(IndexProvider provider) throws RepositoryException {
if (providers.containsKey(provider.getName())) {
throw new IndexProviderExistsException(
JcrI18n.indexProviderAlreadyExists.text(provider.getName(), repository.name()));
}
// Set the repository name field ...
Reflection.setValue(provider, "repositoryName", repository.name());
// Set the logger instance
Reflection.setValue(provider, "logger", ExtensionLogger.getLogger(provider.getClass()));
if (initialized.get()) {
// This manager is already initialized, so we have to initialize the new provider ...
doInitialize(provider);
}
// Do this last so that it doesn't show up in the list of providers before it's properly
// initialized ...
IndexProvider existing = providers.putIfAbsent(provider.getName(), provider);
if (existing != null) {
throw new IndexProviderExistsException(
JcrI18n.indexProviderAlreadyExists.text(provider.getName(), repository.name()));
}
// Re-read the index definitions in case there were disabled index definitions that used the
// now-available provider ...
readIndexDefinitions();
// Refresh the index writer ...
refreshIndexWriter();
}
@Override
public void notify(NodeTypes updatedNodeTypes) {
// Notify all of the providers about the change in node types ...
for (IndexProvider provider : providers.values()) {
provider.notify(updatedNodeTypes);
}
}
/**
* Get the query index writer that will delegate to only those registered providers with the given
* names.
*
* @param providerNames the names of the providers that require indexing
* @return a query index writer instance; never null
*/
IndexWriter getIndexWriterForProviders(Set<String> providerNames) {
List<IndexProvider> reindexProviders = new LinkedList<>();
for (IndexProvider provider : providers.values()) {
if (providerNames.contains(provider.getName())) {
reindexProviders.add(provider);
}
}
return CompositeIndexWriter.create(reindexProviders);
}
@Override
public IndexStatus getIndexStatus(String providerName, String indexName, String workspaceName) {
CheckArg.isNotNull(providerName, "providerName");
CheckArg.isNotNull(indexName, "indexName");
CheckArg.isNotNull(workspaceName, "workspaceName");
IndexProvider provider = getProvider(providerName);
if (provider == null) {
return IndexStatus.NON_EXISTENT;
}
ManagedIndex managedIndex = provider.getManagedIndex(indexName, workspaceName);
return managedIndex != null ? managedIndex.getStatus() : IndexStatus.NON_EXISTENT;
}
void shutdown() {
for (IndexProvider provider : providers.values()) {
try {
provider.shutdown();
} catch (RepositoryException e) {
logger.error(
e,
JcrI18n.errorShuttingDownIndexProvider,
repository.name(),
provider.getName(),
e.getMessage());
}
}
}
@Override
public void unregister(String providerName) throws RepositoryException {
IndexProvider provider = providers.remove(providerName);
if (provider == null) {
throw new NoSuchProviderException(
JcrI18n.indexProviderDoesNotExist.text(providerName, repository.name()));
}
if (initialized.get()) {
provider.shutdown();
}
// Re-read the index definitions in case there were disabled index definitions that used the
// now-available provider ...
readIndexDefinitions();
// Refresh the index writer ...
refreshIndexWriter();
}
/**
* Initialize the supplied provider.
*
* @param provider the provider; may not be null
* @throws RepositoryException if there is a problem initializing the provider
*/
protected void doInitialize(IndexProvider provider) throws RepositoryException {
// Set the execution context instance ...
Reflection.setValue(provider, "context", repository.context());
// Set the environment
Reflection.setValue(provider, "environment", repository.environment());
provider.initialize();
// If successful, call the 'postInitialize' method reflectively (due to inability to call
// directly) ...
Method postInitialize = Reflection.findMethod(IndexProvider.class, "postInitialize");
Reflection.invokeAccessibly(provider, postInitialize, new Object[] {});
if (logger.isDebugEnabled()) {
logger.debug(
"Successfully initialized index provider '{0}' in repository '{1}'",
provider.getName(), repository.name());
}
}
@Override
public List<String> getIndexNames(
String providerName, String workspaceName, final IndexStatus status) {
CheckArg.isNotNull(providerName, "providerName");
CheckArg.isNotNull(workspaceName, "workspaceName");
final List<String> result = new ArrayList<>();
IndexProvider provider = getProvider(providerName);
if (provider == null) {
return result;
}
provider.onEachIndexInWorkspace(
workspaceName,
new IndexProvider.ManagedIndexOperation() {
@Override
public void apply(String workspaceName, ManagedIndex index, IndexDefinition defn) {
if (index.getStatus().equals(status)) {
result.add(defn.getName());
}
}
});
return result;
}
protected ScanningTasks notify(ChangeSet changeSet) {
if (changeSet.getWorkspaceName() == null) {
// This is a change to the workspaces or repository metadata ...
// Refresh the index definitions ...
RepositoryIndexes indexes = readIndexDefinitions();
ScanningTasks feedback = new ScanningTasks();
if (!indexes.getIndexDefinitions().isEmpty()) {
// Build up the names of the added and removed workspace names ...
Set<String> addedWorkspaces = new HashSet<>();
Set<String> removedWorkspaces = new HashSet<>();
for (Change change : changeSet) {
if (change instanceof WorkspaceAdded) {
WorkspaceAdded added = (WorkspaceAdded) change;
addedWorkspaces.add(added.getWorkspaceName());
} else if (change instanceof WorkspaceRemoved) {
WorkspaceRemoved removed = (WorkspaceRemoved) change;
removedWorkspaces.add(removed.getWorkspaceName());
}
}
if (!addedWorkspaces.isEmpty() || !removedWorkspaces.isEmpty()) {
// Figure out which providers need to be called, and which definitions go with those
// providers ...
Map<String, List<IndexDefinition>> defnsByProvider = new HashMap<>();
for (IndexDefinition defn : indexes.getIndexDefinitions().values()) {
String providerName = defn.getProviderName();
List<IndexDefinition> defns = defnsByProvider.get(providerName);
if (defns == null) {
defns = new ArrayList<>();
defnsByProvider.put(providerName, defns);
}
defns.add(defn);
}
// Then for each provider ...
for (Map.Entry<String, List<IndexDefinition>> entry : defnsByProvider.entrySet()) {
String providerName = entry.getKey();
WorkspaceIndexChanges changes =
new WorkspaceIndexChanges(entry.getValue(), addedWorkspaces, removedWorkspaces);
IndexProvider provider = providers.get(providerName);
if (provider == null) continue;
provider.notify(
changes,
repository.changeBus(),
repository.nodeTypeManager(),
repository.repositoryCache().getWorkspaceNames(),
feedback.forProvider(providerName));
}
}
}
return feedback;
}
if (!systemWorkspaceName.equals(changeSet.getWorkspaceName())) {
// The change does not affect the 'system' workspace, so skip it ...
return null;
}
// It is simple to listen to all local and remote changes. Therefore, any changes made locally
// to the index definitions
// will be propagated through the cached representation via this listener.
AtomicReference<Map<Name, IndexChangeInfo>> changesByProviderName = new AtomicReference<>();
for (Change change : changeSet) {
if (change instanceof NodeAdded) {
NodeAdded added = (NodeAdded) change;
Path addedPath = added.getPath();
if (indexesPath.isAncestorOf(addedPath)) {
// Get the name of the affected provider ...
Name providerName = addedPath.getSegment(2).getName();
if (addedPath.size() > 3) {
// Adding an index (or column definition), but all we care about is the name of the
// index
Name indexName = addedPath.getSegment(3).getName();
changeInfoForProvider(changesByProviderName, providerName).changed(indexName);
}
}
} else if (change instanceof NodeRemoved) {
NodeRemoved removed = (NodeRemoved) change;
Path removedPath = removed.getPath();
if (indexesPath.isAncestorOf(removedPath)) {
// Get the name of the affected provider ...
Name providerName = removedPath.getSegment(2).getName();
if (removedPath.size() > 4) {
// It's a column definition being removed, so the index is changed ...
Name indexName = removedPath.getSegment(3).getName();
changeInfoForProvider(changesByProviderName, providerName).removed(indexName);
} else if (removedPath.size() > 3) {
// Removing an index (or column definition), but all we care about is the name of the
// index
Name indexName = removedPath.getSegment(3).getName();
changeInfoForProvider(changesByProviderName, providerName).removed(indexName);
} else if (removedPath.size() == 3) {
// The whole provider was removed ...
changeInfoForProvider(changesByProviderName, providerName).removedAll();
}
}
} else if (change instanceof PropertyChanged) {
PropertyChanged propChanged = (PropertyChanged) change;
Path changedPath = propChanged.getPathToNode();
if (indexesPath.isAncestorOf(changedPath)) {
if (changedPath.size() > 3) {
// Adding an index (or column definition), but all we care about is the name of the
// index
Name providerName = changedPath.getSegment(2).getName();
Name indexName = changedPath.getSegment(3).getName();
changeInfoForProvider(changesByProviderName, providerName).changed(indexName);
}
}
} // we don't care about node moves (don't happen) or property added/removed (handled by node
// add/remove)
}
if (changesByProviderName.get() == null || changesByProviderName.get().isEmpty()) {
// No changes to the indexes ...
return null;
}
// Refresh the index definitions ...
RepositoryIndexes indexes = readIndexDefinitions();
// And notify the affected providers ...
StringFactory strings = context.getValueFactories().getStringFactory();
ScanningTasks feedback = new ScanningTasks();
for (Map.Entry<Name, IndexChangeInfo> entry : changesByProviderName.get().entrySet()) {
String providerName = strings.create(entry.getKey());
IndexProvider provider = providers.get(providerName);
if (provider == null) continue;
IndexChanges changes = new IndexChanges();
IndexChangeInfo info = entry.getValue();
if (info.removedAll) {
// Get all of the definitions for this provider ...
for (IndexDefinition defn : indexes.getIndexDefinitions().values()) {
if (defn.getProviderName().equals(providerName)) changes.remove(defn.getName());
}
}
// Others might have been added or changed after the existing ones were removed ...
for (Name name : info.removedIndexes) {
changes.remove(strings.create(name));
}
for (Name name : info.changedIndexes) {
IndexDefinition defn = indexes.getIndexDefinitions().get(strings.create(name));
if (defn != null) changes.change(defn);
}
// Notify the provider ...
try {
provider.notify(
changes,
repository.changeBus(),
repository.nodeTypeManager(),
repository.repositoryCache().getWorkspaceNames(),
feedback.forProvider(providerName));
} catch (RuntimeException e) {
logger.error(
e,
JcrI18n.errorNotifyingProviderOfIndexChanges,
providerName,
repository.name(),
e.getMessage());
}
}
// Finally swap the snapshot of indexes ...
this.indexes = indexes;
return feedback;
}
@Override
public void registerIndexes(IndexDefinition[] indexDefinitions, boolean allowUpdate)
throws InvalidIndexDefinitionException, IndexExistsException {
CheckArg.isNotNull(indexDefinitions, "indexDefinitions");
// Before we do anything, validate each of the index definitions and throw an exception ...
RepositoryNodeTypeManager nodeTypeManager = repository.nodeTypeManager();
List<IndexDefinition> validated = new ArrayList<>(indexDefinitions.length);
Problems problems = new SimpleProblems();
for (IndexDefinition defn : indexDefinitions) {
String name = defn.getName();
String providerName = defn.getProviderName();
if (name == null) {
problems.addError(JcrI18n.indexMustHaveName, defn, repository.name());
continue;
}
if (indexes.getIndexDefinitions().containsKey(name) && !allowUpdate) {
// Throw this one immediately ...
String msg = JcrI18n.indexAlreadyExists.text(defn.getName(), repository.name());
throw new IndexExistsException(msg);
}
if (providerName == null) {
problems.addError(JcrI18n.indexMustHaveProviderName, defn.getName(), repository.name());
continue;
}
if (defn.hasSingleColumn()) {
IndexColumnDefinition columnDefn = defn.getColumnDefinition(0);
Name propName =
context.getValueFactories().getNameFactory().create(columnDefn.getPropertyName());
switch (defn.getKind()) {
case UNIQUE_VALUE:
if (NON_UNIQUE_PROPERTY_NAMES.contains(propName)) {
problems.addError(
JcrI18n.unableToCreateUniqueIndexForColumn,
defn.getName(),
columnDefn.getPropertyName());
}
break;
case ENUMERATED_VALUE:
if (NON_ENUMERATED_PROPERTY_NAMES.contains(propName)) {
problems.addError(
JcrI18n.unableToCreateEnumeratedIndexForColumn,
defn.getName(),
columnDefn.getPropertyName());
}
break;
case VALUE:
case NODE_TYPE:
case TEXT:
break;
}
} else {
// Mulitple columns ...
if (defn.getKind() == IndexKind.NODE_TYPE) {
// must be single-column indexes
problems.addError(JcrI18n.nodeTypeIndexMustHaveOneColumn, defn.getName());
}
}
IndexProvider provider = providers.get(providerName);
if (provider == null) {
problems.addError(JcrI18n.indexProviderDoesNotExist, defn.getName(), repository.name());
} else {
// Perform some default validations that should be applied to all providers...
provider.validateDefaultColumnTypes(context, defn, problems);
// Then have the provider perform any custom validations
provider.validateProposedIndex(context, defn, nodeTypeManager, problems);
// Create an instance of our own definition implementation ...
defn = RepositoryIndexDefinition.createFrom(defn, true);
validated.add(defn);
}
}
if (problems.hasErrors()) {
String msg = JcrI18n.invalidIndexDefinitions.text(repository.name(), problems);
throw new InvalidIndexDefinitionException(new JcrProblems(problems), msg);
}
SessionCache systemCache = repository.createSystemSession(context, false);
SystemContent system = new SystemContent(systemCache);
for (IndexDefinition defn : validated) {
String providerName = defn.getProviderName();
// Determine if the index should be enabled ...
defn = RepositoryIndexDefinition.createFrom(defn, providers.containsKey(providerName));
// Write the definition to the system area ...
system.store(defn, allowUpdate);
}
// Save the changes ...
systemCache.save();
// Refresh the immutable snapshot ...
this.indexes = readIndexDefinitions();
}
/**
* Initialize this manager by calling {@link IndexProvider#initialize()} on each of the
* currently-registered providers.
*
* @return the information about the portions of the repository that need to be scanned to
* (re)build indexes; null if no scanning is required
*/
protected synchronized ScanningTasks initialize() {
if (initialized.get()) {
// nothing to do ...
return null;
}
// Initialize each of the providers, removing any that are not properly initialized ...
for (Iterator<Map.Entry<String, IndexProvider>> providerIter = providers.entrySet().iterator();
providerIter.hasNext(); ) {
IndexProvider provider = providerIter.next().getValue();
try {
doInitialize(provider);
} catch (Throwable t) {
if (t.getCause() != null) {
t = t.getCause();
}
repository.error(
t,
JcrI18n.unableToInitializeIndexProvider,
provider.getName(),
repository.name(),
t.getMessage());
providerIter.remove();
}
}
// Re-read the index definitions in case there were disabled index definitions that used the
// now-available provider ...
RepositoryIndexes indexes = readIndexDefinitions();
// Notify the providers of all the index definitions (which we'll treat as "new" since we're
// just starting up) ...
ScanningTasks feedback = new ScanningTasks();
for (Iterator<Map.Entry<String, IndexProvider>> providerIter = providers.entrySet().iterator();
providerIter.hasNext(); ) {
IndexProvider provider = providerIter.next().getValue();
if (provider == null) continue;
final String providerName = provider.getName();
IndexChanges changes = new IndexChanges();
for (IndexDefinition indexDefn : indexes.getIndexDefinitions().values()) {
if (!providerName.equals(indexDefn.getProviderName())) continue;
changes.change(indexDefn);
}
// Even if there are no definitions, we still want to notify each of the providers ...
try {
provider.notify(
changes,
repository.changeBus(),
repository.nodeTypeManager(),
repository.repositoryCache().getWorkspaceNames(),
feedback.forProvider(providerName));
} catch (RuntimeException e) {
logger.error(
e,
JcrI18n.errorNotifyingProviderOfIndexChanges,
providerName,
repository.name(),
e.getMessage());
}
}
// Refresh the index writer ...
refreshIndexWriter();
initialized.set(true);
return feedback;
}