Module org.apache.jena.core

Package org.apache.jena.util

Class MonitorModel

java.lang.Object

org.apache.jena.enhanced.EnhGraph

org.apache.jena.rdf.model.impl.ModelCom

org.apache.jena.util.MonitorModel

All Implemented Interfaces:

Model, ModelCon, ModelGraphInterface, RDFReaderF, RDFWriterF, Lock, PrefixMapping

public class MonitorModel
extends ModelCom

Model wrapper which provides normal access to an underlying model but also maintains a snapshot of the triples it was last known to contain. A snapshot action causes the set of changes between this and the previous snapshot to be calculated and the cache updated. The snapshot process will also fire change notification.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.jena.shared.PrefixMapping

PrefixMapping.Factory, PrefixMapping.IllegalPrefixException, PrefixMapping.JenaLockedException

Field Summary

Fields inherited from interface org.apache.jena.shared.Lock

READ, WRITE

Fields inherited from interface org.apache.jena.shared.PrefixMapping

Extended, Standard

Constructor Summary

Constructors

Constructor	Description
MonitorModel(Model base)	Create a monitor over the given underlying base model.

Method Summary

Modifier and Type	Method	Description
void	snapshot()	Compute the differences between the current monitored graph and the last snapshot, forward any changes to registered listeners, then take a new snapshot.
void	snapshot(List<Statement> additions, List<Statement> deletions)	Compute the differences between the current monitored graph and the last snapshot.

Methods inherited from class org.apache.jena.rdf.model.impl.ModelCom

abort, adapt, add, add, add, add, add, add, add, add, add, addLiteral, addLiteral, addLiteral, addLiteral, addLiteral, addLiteral, addLiteral, addNamespaces, asModel, asNode, asRDFNode, asStatement, asStatements, asStatements, asStatements, begin, calculateInTxn, clearNsPrefixMap, close, commit, contains, contains, contains, contains, contains, containsAll, containsAll, containsAny, containsAny, containsLiteral, containsLiteral, containsLiteral, containsLiteral, containsLiteral, containsLiteral, containsLiteral, containsResource, createAlt, createAlt, createBag, createBag, createList, createList, createList, createLiteral, createLiteral, createLiteralStatement, createLiteralStatement, createLiteralStatement, createLiteralStatement, createLiteralStatement, createLiteralStatement, createLiteralStatement, createProperty, createProperty, createResource, createResource, createResource, createResource, createResource, createResource, createSeq, createSeq, createStatement, createStatement, createStatement, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, difference, enterCriticalSection, executeInTxn, expandPrefix, getAlt, getAlt, getBag, getBag, getGraph, getList, getList, getLock, getModelLock, getNsPrefixMap, getNsPrefixURI, getNsURIPrefix, getProperty, getProperty, getProperty, getProperty, getRDFNode, getReader, getRequiredProperty, getRequiredProperty, getResource, getResource, getSeq, getSeq, getWriter, hasNoMappings, independent, intersect, intersection, isClosed, isEmpty, isIsomorphicWith, leaveCriticalSection, listBySubject, listLiteralStatements, listLiteralStatements, listLiteralStatements, listLiteralStatements, listLiteralStatements, listLiteralStatements, listNameSpaces, listObjects, listObjectsOfProperty, listObjectsOfProperty, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listStatements, listStatements, listStatements, listStatements, listSubjects, listSubjectsWithProperty, listSubjectsWithProperty, listSubjectsWithProperty, listSubjectsWithProperty, lock, notifyEvent, numPrefixes, qnameFor, read, read, read, read, read, read, read, register, reifiedToString, remove, remove, remove, remove, remove, remove, removeAll, removeAll, removeNsPrefix, samePrefixMappingAs, setNsPrefix, setNsPrefixes, setNsPrefixes, shortForm, size, supportsSetOperations, supportsTransactions, toString, union, unregister, withDefaultMappings, wrapAsResource, write, write, write, write, write, write

Methods inherited from class org.apache.jena.enhanced.EnhGraph

asGraph, equals, getNodeAs, hashCode, isIsomorphicWith

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.jena.rdf.model.Model

equals

Constructor Details

MonitorModel

public MonitorModel(Model base)

Create a monitor over the given underlying base model.

Method Details

snapshot

public void snapshot(List<Statement> additions,
 List<Statement> deletions)

Compute the differences between the current monitored graph and the last snapshot. The changes will also be forwarded to any listeners. Then take a new snapshot.

Parameters:

additions - a place in which the set of newly added statements should be noted, can be null

deletions - a place in which the set of newly deleted statements should be noted, can be null

snapshot

public void snapshot()

Compute the differences between the current monitored graph and the last snapshot, forward any changes to registered listeners, then take a new snapshot.