com.hp.hpl.jena.util
Class MonitorModel

java.lang.Object
  com.hp.hpl.jena.enhanced.EnhGraph
      com.hp.hpl.jena.rdf.model.impl.ModelCom
          com.hp.hpl.jena.util.MonitorModel

All Implemented Interfaces:

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

public class MonitorModel
extends com.hp.hpl.jena.rdf.model.impl.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.

Version:

$Revision: 1.1 $

Author:

Dave Reynolds

Nested Class Summary

Nested classes/interfaces inherited from interface com.hp.hpl.jena.shared.PrefixMapping

PrefixMapping.Factory, PrefixMapping.IllegalPrefixException, PrefixMapping.JenaLockedException

Field Summary

Fields inherited from interface com.hp.hpl.jena.shared.PrefixMapping

Extended, Standard

Fields inherited from interface com.hp.hpl.jena.shared.Lock

READ, WRITE

Constructor Summary

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

Method Summary

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 com.hp.hpl.jena.rdf.model.impl.ModelCom

abort, adapt, add, add, add, add, add, add, add, add, add, add, add, add, addLiteral, addLiteral, addLiteral, addLiteral, addLiteral, addLiteral, addLiteral, addLiteral, addNamespaces, asFilter, asModel, asNode, asRDFNode, asStatement, asStatements, asStatements, asStatements, begin, 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, createLiteral, createLiteral, createLiteralStatement, createLiteralStatement, createLiteralStatement, createLiteralStatement, createLiteralStatement, createLiteralStatement, createLiteralStatement, createProperty, createProperty, createReifiedStatement, createReifiedStatement, createResource, createResource, createResource, createResource, createResource, createResource, createResource, createSeq, createSeq, createStatement, createStatement, createStatement, createStatement, createStatement, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, createTypedLiteral, difference, enterCriticalSection, executeInTransaction, expandPrefix, findTriplesFrom, getAlt, getAlt, getAnyReifiedStatement, getBag, getBag, getDefaultModelPrefixes, getGraph, getHiddenStatements, getLock, getModelLock, getNsPrefixMap, getNsPrefixURI, getNsURIPrefix, getProperty, getProperty, getProperty, getRDFNode, getReader, getReader, getReificationStyle, getRequiredProperty, getResource, getResource, getSeq, getSeq, getWriter, getWriter, independent, intersect, intersection, isClosed, isEmpty, isIsomorphicWith, isReified, leaveCriticalSection, listBySubject, listLiteralStatements, listLiteralStatements, listLiteralStatements, listLiteralStatements, listLiteralStatements, listNameSpaces, listObjects, listObjectsOfProperty, listObjectsOfProperty, listReifiedStatements, listReifiedStatements, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listResourcesWithProperty, listStatements, listStatements, listStatements, listStatements, listStatements, listSubjects, listSubjectsWithProperty, listSubjectsWithProperty, listSubjectsWithProperty, listSubjectsWithProperty, lock, notifyEvent, qnameFor, query, queryHandler, read, read, read, read, read, read, read, register, reifiedToString, remove, remove, remove, remove, remove, remove, remove, removeAll, removeAll, removeAllReifications, removeNsPrefix, removeReification, samePrefixMappingAs, setDefaultModelPrefixes, setNsPrefix, setNsPrefixes, setNsPrefixes, setReaderClassName, setWriterClassName, shortForm, size, supportsSetOperations, supportsTransactions, toString, union, unregister, withDefaultMappings, wrapAsResource, write, write, write, write, write, write

Methods inherited from class com.hp.hpl.jena.enhanced.EnhGraph

asGraph, equals, getNodeAs, getNodeCacheControl, hashCode, isIsomorphicWith, setNodeCache

Methods inherited from class java.lang.Object

equals, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.hp.hpl.jena.rdf.model.Model

equals

Constructor Detail

MonitorModel

public MonitorModel(Model base)

Create a monitor over the given underlying base model.

Method Detail

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.