org.eclipse.smila.connectivity.deltaindexing
Interface DeltaIndexingManager

All Known Implementing Classes:

DeltaIndexingManagerImpl, DeltaIndexingManagerImpl

public interface DeltaIndexingManager

The Interface DeltaIndexingManager.

Method Summary

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.
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.

Method Detail

init

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.

Parameters:

dataSourceID - dataSourceID

Throws:

DeltaIndexingException - the delta indexing exception

checkForUpdate

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

Parameters:

id - the id

hash - the hash

Returns:

true, if check for update

Throws:

DeltaIndexingException - the delta indexing exception

visit

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

updates the hash and marks this id as visited.

Parameters:

id - the id

hash - the hash

Throws:

DeltaIndexingException - the delta indexing exception

obsoleteIdIterator

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

Obsolete id iterator.

Parameters:

dataSourceID - the data source id

Returns:

the iterator< id>

Throws:

DeltaIndexingException - the delta indexing exception

obsoleteIdIterator

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

Obsolete id iterator for id fragments.

Parameters:

id - the id

Returns:

the iterator< id>

Throws:

DeltaIndexingException - the delta indexing exception

clear

void clear()
           throws DeltaIndexingException

Clear.

Throws:

DeltaIndexingException - the delta indexing exception

clear

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

Clear.

Parameters:

dataSourceID - the data source id

Throws:

DeltaIndexingException - the delta indexing exception

rollback

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

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

Parameters:

dataSourceID - the data source id

Throws:

DeltaIndexingException - the delta indexing exception

delete

void delete(Id id)
            throws DeltaIndexingException

Delete.

Parameters:

id - the id

Throws:

DeltaIndexingException - the delta indexing exception

finish

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

removes the lock.

Parameters:

dataSourceID - the data source id

Throws:

DeltaIndexingException - the delta indexing exception

unlockDatasources

void unlockDatasources()
                       throws DeltaIndexingException

Unlock all datasources.

Throws:

DeltaIndexingException - the delta indexing exception

exists

boolean exists(java.lang.String dataSourceId)

Exists.

Parameters:

dataSourceId - the data source id

Returns:

true, if successful