org.eclipse.smila.connectivity.deltaindexing.jpa.impl
Class DeltaIndexingManagerImpl

java.lang.Object
  org.eclipse.smila.connectivity.deltaindexing.jpa.impl.DeltaIndexingManagerImpl

All Implemented Interfaces:

DeltaIndexingManager

public class DeltaIndexingManagerImpl
extends java.lang.Object
implements DeltaIndexingManager

The Class DeltaIndexingManagerImpl.

Field Summary

static java.lang.String	CONFIGURATION_FILE name of configuration file.
static java.lang.String	PERSISTENCE_UNIT_NAME Constant for the eclipseLink persistence unit name.

Constructor Summary

DeltaIndexingManagerImpl()

Method Summary

protected void	activate(ComponentContext context) Activate.
boolean	checkForUpdate(Id id, java.lang.String hash) checks for the hash of the current id is new or has changed (true) or not (false). // to reduce method calls mark entry as visited on return value false
void	clear() Clear.
void	clear(java.lang.String dataSourceID) Clear.
protected void	deactivate(ComponentContext context) OSGi Declarative Services service deactivation method.
void	delete(Id id) Delete.
boolean	exists(java.lang.String dataSourceId) Exists.
void	finish(java.lang.String dataSourceID) removes the lock.
void	init(java.lang.String dataSourceID) initializes the internal state for an import of a dataSourceID and establishes a lock to avoid that the same.
java.util.Iterator<Id>	obsoleteIdIterator(Id id) Obsolete id iterator for id fragments.
java.util.Iterator<Id>	obsoleteIdIterator(java.lang.String dataSourceID) Obsolete id iterator.
void	rollback(java.lang.String dataSourceID) rollbacks changes was made inside init() and finish(), it should be called before finishing process.
void	unlockDatasources() Unlock all datasources.
void	visit(Id id, java.lang.String hash) updates the hash and marks this id as visited.

Methods inherited from class java.lang.Object

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

Field Detail

PERSISTENCE_UNIT_NAME

public static final java.lang.String PERSISTENCE_UNIT_NAME

Constant for the eclipseLink persistence unit name.

See Also:

Constant Field Values

CONFIGURATION_FILE

public static final java.lang.String CONFIGURATION_FILE

name of configuration file. Hardcoded for now (or fallback), configuration properties should be received from configuration service later.

See Also:

Constant Field Values

Constructor Detail

DeltaIndexingManagerImpl

public DeltaIndexingManagerImpl()

Method Detail

activate

protected void activate(ComponentContext context)
                 throws java.lang.Exception

Activate.

Parameters:

context - the context

Throws:

java.lang.Exception - if any error occurs

deactivate

protected void deactivate(ComponentContext context)
                   throws java.lang.Exception

OSGi Declarative Services service deactivation method. Shuts down BPEL engine.

Parameters:

context - OSGi service component context

Throws:

java.lang.Exception - if any error occurs

init

public void init(java.lang.String dataSourceID)
          throws DeltaIndexingException

initializes the internal state for an import of a dataSourceID and establishes a lock to avoid that the same. dataSourceID ist initialized multiple times concurrently.

Specified by:

init in interface DeltaIndexingManager

Parameters:

dataSourceID - dataSourceID

Throws:

DeltaIndexingException - the delta indexing exception

See Also:

DeltaIndexingManager.init(java.lang.String)

checkForUpdate

public boolean checkForUpdate(Id id,
                              java.lang.String hash)
                       throws DeltaIndexingException

checks for the hash of the current id is new or has changed (true) or not (false). // to reduce method calls mark entry as visited on return value false

Specified by:

checkForUpdate in interface DeltaIndexingManager

Parameters:

id - the id

hash - the hash

Returns:

true, if check for update

Throws:

DeltaIndexingException - the delta indexing exception

See Also:

DeltaIndexingManager.checkForUpdate(org.eclipse.smila.datamodel.id.Id, java.lang.String)

visit

public void visit(Id id,
                  java.lang.String hash)
           throws DeltaIndexingException

updates the hash and marks this id as visited.

Specified by:

visit in interface DeltaIndexingManager

Parameters:

id - the id

hash - the hash

Throws:

DeltaIndexingException - the delta indexing exception

See Also:

DeltaIndexingManager.visit(org.eclipse.smila.datamodel.id.Id, java.lang.String)

obsoleteIdIterator

public java.util.Iterator<Id> obsoleteIdIterator(java.lang.String dataSourceID)
                                          throws DeltaIndexingException

Obsolete id iterator.

Specified by:

obsoleteIdIterator in interface DeltaIndexingManager

Parameters:

dataSourceID - the data source id

Returns:

the iterator< id>

Throws:

DeltaIndexingException - the delta indexing exception

See Also:

DeltaIndexingManager.obsoleteIdIterator(java.lang.String)

obsoleteIdIterator

public java.util.Iterator<Id> obsoleteIdIterator(Id id)
                                          throws DeltaIndexingException

Obsolete id iterator for id fragments.

Specified by:

obsoleteIdIterator in interface DeltaIndexingManager

Parameters:

id - the id

Returns:

the iterator< id>

Throws:

DeltaIndexingException - the delta indexing exception

See Also:

DeltaIndexingManager.obsoleteIdIterator(org.eclipse.smila.datamodel.id.Id)

clear

public void clear()
           throws DeltaIndexingException

Clear.

Specified by:

clear in interface DeltaIndexingManager

Throws:

DeltaIndexingException - the delta indexing exception

See Also:

DeltaIndexingManager.clear()

clear

public void clear(java.lang.String dataSourceID)
           throws DeltaIndexingException

Clear.

Specified by:

clear in interface DeltaIndexingManager

Parameters:

dataSourceID - the data source id

Throws:

DeltaIndexingException - the delta indexing exception

See Also:

DeltaIndexingManager.clear(java.lang.String)

rollback

public void rollback(java.lang.String dataSourceID)
              throws DeltaIndexingException

rollbacks changes was made inside init() and finish(), it should be called before finishing process.

Specified by:

rollback in interface DeltaIndexingManager

Parameters:

dataSourceID - the data source id

Throws:

DeltaIndexingException - the delta indexing exception

See Also:

DeltaIndexingManager.rollback(java.lang.String)

delete

public void delete(Id id)
            throws DeltaIndexingException

Delete.

Specified by:

delete in interface DeltaIndexingManager

Parameters:

id - the id

Throws:

DeltaIndexingException - the delta indexing exception

See Also:

DeltaIndexingManager.delete(org.eclipse.smila.datamodel.id.Id)

finish

public void finish(java.lang.String dataSourceID)
            throws DeltaIndexingException

removes the lock.

Specified by:

finish in interface DeltaIndexingManager

Parameters:

dataSourceID - the data source id

Throws:

DeltaIndexingException - the delta indexing exception

See Also:

DeltaIndexingManager.finish(java.lang.String)

unlockDatasources

public void unlockDatasources()
                       throws DeltaIndexingException

Unlock all datasources.

Specified by:

unlockDatasources in interface DeltaIndexingManager

Throws:

DeltaIndexingException - the delta indexing exception

See Also:

DeltaIndexingManager.unlockDatasources()

exists

public boolean exists(java.lang.String dataSourceId)

Exists.

Specified by:

exists in interface DeltaIndexingManager

Parameters:

dataSourceId - the data source id

Returns:

true, if successful

See Also:

DeltaIndexingManager.exists(java.lang.String)