org.modeshape.graph.search
Class SearchableRepositorySource

java.lang.Object
  org.modeshape.graph.search.SearchableRepositorySource

All Implemented Interfaces:

Serializable, Referenceable, RepositorySource

public class SearchableRepositorySource
extends Object
implements RepositorySource

A RepositorySource implementation that can be used as a wrapper around another non-searchable or non-querable RepositorySource instance to provide search and query capability.

See Also:

Serialized Form

Nested Class Summary

protected class	SearchableRepositorySource.AbstractConnection
protected class	SearchableRepositorySource.ParallelConnection A RepositoryConnection implementation that calls the delegate processor in a background thread, allowing the processing of the FullTextSearchRequest and AccessQueryRequest objects to be done in this thread and in parallel with other requests.
protected class	SearchableRepositorySource.SynchronousConnection A RepositoryConnection implementation that calls the delegate processor in the calling thread.

Constructor Summary

SearchableRepositorySource(RepositorySource wrapped, SearchEngine searchEngine)
Create a new searchable and queryable RepositorySource around an instance that is neither.

SearchableRepositorySource(RepositorySource wrapped, SearchEngine searchEngine, ExecutorService executorService, boolean executeAsynchronously, boolean updateIndexesAsynchronously)
Create a new searchable and queryable RepositorySource around an instance that is neither.

Method Summary

void	close() Signal this source that it is no longer needed and should begin the process of reclaiming or closing all resources that it has acquired.
protected RepositorySource	delegate()
protected boolean	executeRequestsAsynchronously()
protected ExecutorService	executorService()
RepositorySourceCapabilities	getCapabilities() Get the capabilities for this source.
RepositoryConnection	getConnection() Get a connection from this source.
String	getName() Get the name for this repository source.
Reference	getReference()
int	getRetryLimit() Get the maximum number of retries that may be performed on a given operation when using connections created by this source.
void	initialize(RepositoryContext context) Initialize this source to use the supplied RepositoryContext, from which this source can obtain the configuration defining this source, connections to other sources, and the execution context.
protected void	process(ExecutionContext context, Changes changes) Do the work of processing the changes and updating the searchEngine.
protected SearchEngine	searchEngine()
void	setRetryLimit(int limit) Set the maximum number of retries that may be performed on a given operation when using connections created by this source.
protected boolean	updateIndexesAsynchronously()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SearchableRepositorySource

public SearchableRepositorySource(RepositorySource wrapped,
                                  SearchEngine searchEngine,
                                  ExecutorService executorService,
                                  boolean executeAsynchronously,
                                  boolean updateIndexesAsynchronously)

Create a new searchable and queryable RepositorySource around an instance that is neither.

Parameters:

wrapped - the RepositorySource that is not searchable and queryable

searchEngine - the search engine that is to be used

executorService - the ExecutorService that should be used when submitting requests to the wrapped service; may be null if all operations should be performed in the calling thread

executeAsynchronously - true if an ExecutorService is provided and the requests to the wrapped source are to be executed asynchronously

updateIndexesAsynchronously - true if an ExecutorService is provided and the indexes are to be updated in a different thread than the thread executing the RepositoryConnection.execute(ExecutionContext, Request) calls.

SearchableRepositorySource

public SearchableRepositorySource(RepositorySource wrapped,
                                  SearchEngine searchEngine)

Create a new searchable and queryable RepositorySource around an instance that is neither. All of the request processing will be done in the calling thread, and updating the indexes will be done synchronously within the context of the RepositoryConnection.execute(ExecutionContext, Request) method (and obviously on the same thread). This means that the execution of the requests will not return until the indexes have been updated with any changes made by the requests.

This is equivalent to calling new SearchableRepositorySource(wrapped,searchEngine,null,false)

Parameters:

wrapped - the RepositorySource that is not searchable and queryable

searchEngine - the search engine that is to be used

Method Detail

getName

public String getName()

Get the name for this repository source.

Specified by:

getName in interface RepositorySource

Returns:

the name; never null or empty

See Also:

RepositorySource.getName()

close

public void close()

Signal this source that it is no longer needed and should begin the process of reclaiming or closing all resources that it has acquired. Because connections may still be in use, this method may not necessarily close all resources immediately.

This is a required method, and must be called when this source is no longer needed if one or more connections have been obtained since the previous call to this method.

Note that calling this method also does not preclude obtaining more connections after this method is called. If that happens, this source should simply reacquire any resources necessary to provide additional connections, and this method needs to be called once again.

Specified by:

close in interface RepositorySource

See Also:

RepositorySource.close()

getCapabilities

public RepositorySourceCapabilities getCapabilities()

Get the capabilities for this source.

Specified by:

getCapabilities in interface RepositorySource

Returns:

the capabilities for this source; never null

See Also:

RepositorySource.getCapabilities()

getConnection

public RepositoryConnection getConnection()
                                   throws RepositorySourceException

Get a connection from this source. Even though each RepositorySource need not be thread safe, this method should be safe to be called concurrently by multiple threads.

Specified by:

getConnection in interface RepositorySource

Returns:

a connection

Throws:

RepositorySourceException - if there is a problem obtaining a connection

See Also:

RepositorySource.getConnection()

getRetryLimit

public int getRetryLimit()

Get the maximum number of retries that may be performed on a given operation when using connections created by this source. This value does not constitute a minimum number of retries; in fact, the connection user is not required to retry any operations.

Specified by:

getRetryLimit in interface RepositorySource

Returns:

the maximum number of allowable retries, or 0 if the source has no limit

See Also:

RepositorySource.getRetryLimit()

initialize

public void initialize(RepositoryContext context)
                throws RepositorySourceException

Initialize this source to use the supplied RepositoryContext, from which this source can obtain the configuration defining this source, connections to other sources, and the execution context.

This method may be called each time the configuration changes, allowing the source to update itself.

Specified by:

initialize in interface RepositorySource

Throws:

RepositorySourceException

See Also:

RepositorySource.initialize(org.modeshape.graph.connector.RepositoryContext)

searchEngine

protected final SearchEngine searchEngine()

updateIndexesAsynchronously

protected final boolean updateIndexesAsynchronously()

executeRequestsAsynchronously

protected final boolean executeRequestsAsynchronously()

executorService

protected final ExecutorService executorService()

delegate

protected final RepositorySource delegate()

process

protected void process(ExecutionContext context,
                       Changes changes)

Do the work of processing the changes and updating the searchEngine. This method may be called while on one of the threads owned by the executor service (if updateIndexesAsynchronously() returns true), or from the thread executing the requests on the delegate (if updateIndexesAsynchronously() returns false).

Parameters:

context - the execution context in which the indexes should be updated

changes - the changes; never null

setRetryLimit

public void setRetryLimit(int limit)

Set the maximum number of retries that may be performed on a given operation when using connections created by this source. This value does not constitute a minimum number of retries; in fact, the connection user is not required to retry any operations.

Specified by:

setRetryLimit in interface RepositorySource

Parameters:

limit - the maximum number of allowable retries, or 0 if the source has no limit

See Also:

RepositorySource.setRetryLimit(int)

getReference

public Reference getReference()
                       throws NamingException

Specified by:

getReference in interface Referenceable

Throws:

NamingException

See Also:

Referenceable.getReference()