org.eclipse.rdf4j.federated.write

Interface WriteStrategy

All Known Implementing Classes:

ReadOnlyWriteStrategy, RepositoryWriteStrategy

public interface WriteStrategy

Interface for the WriteStrategy that is used for writing data to the federation. The implementation can decided upon how is data written to the underlying federation members (e.g. to a designated federation member)

Note: this is an experimental feature which is subject to change in a future version.

Author:

Andreas Schwarte

See Also:

RepositoryWriteStrategy, ReadOnlyWriteStrategy

Method Summary

Modifier and Type	Method and Description
void	addStatement(Resource subj, IRI pred, Value obj, Resource... contexts) Add a statement
void	begin() Begin a transaction.
void	close() Close this write strategy (e.g.
void	commit() Commit a transaction.
void	initialize() Initialize the write strategy (e.g.
boolean	isInitialized() Returns true if this instance is initialized
void	removeStatement(Resource subj, IRI pred, Value obj, Resource... contexts) Remove a statement
void	rollback() Rollback a transaction.

Method Detail

initialize

void initialize()
         throws RepositoryException

Initialize the write strategy (e.g. open a shared RepositoryConnection.

Throws:

RepositoryException

isInitialized

boolean isInitialized()

Returns true if this instance is initialized

Returns:

flag indicating the initialization resources

close

void close()
    throws RepositoryException

Close this write strategy (e.g. close a shared RepositoryException).

Throws:

RepositoryException

begin

void begin()
    throws RepositoryException

Begin a transaction.

Throws:

RepositoryException

commit

void commit()
     throws RepositoryException

Commit a transaction.

Throws:

RepositoryException

rollback

void rollback()
       throws RepositoryException

Rollback a transaction.

Throws:

RepositoryException

addStatement

void addStatement(Resource subj,
                  IRI pred,
                  Value obj,
                  Resource... contexts)
           throws RepositoryException

Add a statement

Parameters:

subj -

pred -

obj -

contexts -

Throws:

RepositoryException

removeStatement

void removeStatement(Resource subj,
                     IRI pred,
                     Value obj,
                     Resource... contexts)
              throws RepositoryException

Remove a statement

Parameters:

subj -

pred -

obj -

contexts -

Throws:

RepositoryException