Module org.apache.jena.rdfpatch

Package org.apache.jena.rdfpatch.changes

Class RDFChangesN

java.lang.Object

org.apache.jena.rdfpatch.changes.RDFChangesN

All Implemented Interfaces:

RDFChanges

public class RDFChangesN
extends Object
implements RDFChanges

An RDFChanges that replicates the stream of changes to N other RDFChanges streams.

Constructor Summary

Constructors

Constructor	Description
RDFChangesN(List<RDFChanges> changes)
RDFChangesN(RDFChanges... changes)

Method Summary

Modifier and Type	Method	Description
void	add(Node g, Node s, Node p, Node o)	Notification that a quad or triple is added.
void	addPrefix(Node graph, String prefix, String uriStr)	Add a prefix.
void	delete(Node g, Node s, Node p, Node o)	Notification that a quad or triple is deleted.
void	deletePrefix(Node graph, String prefix)	Delete a prefix.
void	finish()	Finish processing.
void	header(String field, Node value)	Header field.
static RDFChanges	multi(RDFChanges sc1, RDFChanges sc2)	Create a 2-way RDFChangesN
void	segment()	Segment marker.
void	start()	Start processing.
void	txnAbort()	Indicator that a transaction aborts
void	txnBegin()	Indicator that a transaction begins, or becomes a write transaction.
void	txnCommit()	Indicator that a transaction commits.

Methods inherited from class java.lang.Object

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

Constructor Details

RDFChangesN

public RDFChangesN(RDFChanges... changes)

RDFChangesN

public RDFChangesN(List<RDFChanges> changes)

Method Details

multi

public static RDFChanges multi(RDFChanges sc1,
 RDFChanges sc2)

Create a 2-way RDFChangesN

start

public void start()

Description copied from interface: RDFChanges

Start processing. The exact meaning is implementation dependent. This should be paired with a RDFChanges.finish().

Specified by:

start in interface RDFChanges

finish

public void finish()

Description copied from interface: RDFChanges

Finish processing. The exact meaning is implementation dependent. This should be paired with a RDFChanges.start().

Specified by:

finish in interface RDFChanges

header

public void header(String field,
 Node value)

Description copied from interface: RDFChanges

Header field. Headers are metadata about the changes being made.

Specified by:

header in interface RDFChanges

add

public void add(Node g,
 Node s,
 Node p,
 Node o)

Description copied from interface: RDFChanges

Notification that a quad or triple is added. A stream of Triples outside a dataset will have null for the graph name. Inside an RDF Dataset, it may be more natural to use "urn:x-arq:DefaultGraph" or "urn:x-arq:DefaultGraphNode" in which case test with Quad.isDefaultGraph(Node).

It is not defined whether the add happens before or after this notification all.

Specified by:

add in interface RDFChanges

delete

public void delete(Node g,
 Node s,
 Node p,
 Node o)

Description copied from interface: RDFChanges

Notification that a quad or triple is deleted. A stream of Triples outside a dataset will have null for the graph name. Inside an RDF Dataset, it may be more natural to use "urn:x-arq:DefaultGraph" or "urn:x-arq:DefaultGraphNode" in which case test with Quad.isDefaultGraph(Node).

It is not defined whether the delete happens before or after this notification all.

Specified by:

delete in interface RDFChanges

addPrefix

public void addPrefix(Node graph,
 String prefix,
 String uriStr)

Description copied from interface: RDFChanges

Add a prefix. The graph name follows the same rules as RDFChanges.add(org.apache.jena.graph.Node, org.apache.jena.graph.Node, org.apache.jena.graph.Node, org.apache.jena.graph.Node).

Specified by:

addPrefix in interface RDFChanges

deletePrefix

public void deletePrefix(Node graph,
 String prefix)

Description copied from interface: RDFChanges

Delete a prefix. The graph name follows the same rules as RDFChanges.add(org.apache.jena.graph.Node, org.apache.jena.graph.Node, org.apache.jena.graph.Node, org.apache.jena.graph.Node).

Specified by:

deletePrefix in interface RDFChanges

txnBegin

public void txnBegin()

Description copied from interface: RDFChanges

Indicator that a transaction begins, or becomes a write transaction.

Specified by:

txnBegin in interface RDFChanges

txnCommit

public void txnCommit()

Description copied from interface: RDFChanges

Indicator that a transaction commits. If this throws an exception, the transaction will be aborted locally and not commit after all.

Specified by:

txnCommit in interface RDFChanges

txnAbort

public void txnAbort()

Description copied from interface: RDFChanges

Indicator that a transaction aborts

Specified by:

txnAbort in interface RDFChanges

segment

public void segment()

Description copied from interface: RDFChanges

Segment marker.

A segment is a number of transactions; the grouping rationale is not defined by RDF Patch.

It might be used to indicate a logical collection of change transactions in a long stream of transactions.

There is no guarantee it will be used.

Segments must contain complete transactions.
Segments must not span start-finish pairs.

Specified by:

segment in interface RDFChanges