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Java Source Code / Java Documentation » Search Engine » compass 2.0 » org.compass.needle.gigaspaces.datasource

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.compass.needle.gigaspaces.datasource .CompassDataSource

CompassDataSource

public class CompassDataSource implements DataPersister<Object>,BulkDataPersister(Code)

A Compass data source to be used with GigaSpaces mirror.

GigaSpaces mirror allows to mirror changes done to the Space into an external data source in a reliable async manner. The Compass data source allows to mirror changes done to the Space into the search engine using Compass.

This extenal data source can be injected with a Compass instance, or it can be configured using the extenal data source proeprties configuration to create a Compass instance. The proeprty compass-config-file will point to Compass configuration file.
author:
kimchy

Field Summary
final public static String	COMPASS_CFG_PROPERTY

Method Summary
public int	count(Object template) Count number of object in the data source that match given template. Note: null value can be passed - in case of a null template.
public void	executeBulk(List<BulkItem> bulkItems) Execute given bulk of operations.
public void	init(Properties properties)
public DataIterator<Object>	initialLoad() Creates and returns an iterator over all the entries that should be loaded into space.
public DataIterator<Object>	iterator(Object template)
public Object	read(Object template) Read one object that matches the given template.
public void	remove(Object object)
public void	removeBatch(List<Object> objects) Remove given objects from the data store.
public void	setCompass(Compass compass)
public void	shutdown()
public void	update(Object object)
public void	updateBatch(List<Object> objects) Update given objects in the data store.
public void	write(Object object)
public void	writeBatch(List<Object> objects) Write given new objects to the data store.

Field Detail

COMPASS_CFG_PROPERTY
final public static String COMPASS_CFG_PROPERTY(Code)

Method Detail

count
public int count(Object template) throws DataSourceException(Code)
	Count number of object in the data source that match given template. Note: null value can be passed - in case of a null template.

executeBulk
public void executeBulk(List<BulkItem> bulkItems) throws DataSourceException(Code)
	Execute given bulk of operations. Each BulkItem contains one of the following operation - WRITE - given object should be inserted to the data store, UPDATE - given object should be updated in the data store, REMOVE - given object should be deleted from the data store If the implementation uses transactions, all the bulk operations must be executed in one transaction.

init
public void init(Properties properties) throws DataSourceException(Code)

initialLoad
public DataIterator<Object> initialLoad() throws DataSourceException(Code)
	Creates and returns an iterator over all the entries that should be loaded into space. a DataIterator or null if no data should be loaded intospace throws: DataSourceException -

iterator
public DataIterator<Object> iterator(Object template) throws DataSourceException(Code)
	Create an iterator over all objects that match the given template. Note: null value can be passed - in case of a null template or at initial space load

read
public Object read(Object template) throws DataSourceException(Code)
	Read one object that matches the given template. Used by the space for read templates with UID.

remove
public void remove(Object object) throws DataSourceException(Code)
	Remove the given object from the data store

removeBatch

public void removeBatch(List<Object> objects) throws DataSourceException(Code)

Remove given objects from the data store.

If the implementation uses transactions, All the objects must be removed in one transaction.

This operation is not currently supported by the space.

setCompass
public void setCompass(Compass compass)(Code)

shutdown
public void shutdown() throws DataSourceException(Code)

update
public void update(Object object) throws DataSourceException(Code)
	Update the given object in the data store

updateBatch

public void updateBatch(List<Object> objects) throws DataSourceException(Code)

Update given objects in the data store.

If the implementation uses transactions, all the objects must be updated in one transaction.

* This operation is not currently supported by the space.

write
public void write(Object object) throws DataSourceException(Code)
	Write given new object to the data store

writeBatch
public void writeBatch(List<Object> objects) throws DataSourceException(Code)
	Write given new objects to the data store. If the implementation uses transactions, all the objects must be written in one transaction.

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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