org.apache.jena.sparql.graph

Class GraphDataBag

java.lang.Object

org.apache.jena.graph.impl.GraphBase

org.apache.jena.mem.GraphMemBase

org.apache.jena.sparql.graph.GraphDataBag

All Implemented Interfaces:

Graph, GraphWithPerform

Direct Known Subclasses:

GraphDefaultDataBag, GraphDistinctDataBag

public abstract class GraphDataBag
extends GraphMemBase

A Graph based on top of a DataBag. This means it has some limitations:

1. Cannot add any triples after you call find() unless you first call clear() or getBulkUpdateHandler().removeAll().
2. Cannot remove any triples except by calling clear() or getBulkUpdateHandler().removeAll().
3. There is no indexing, so find() will always scan all triples.
4. The size() method is not guaranteed to be accurate, treat it as an estimate.
5. You must call close() in order to release any resources (such as spill files).

Field Summary

Fields inherited from class org.apache.jena.mem.GraphMemBase

store

Fields inherited from class org.apache.jena.graph.impl.GraphBase

TOSTRING_TRIPLE_BASE, TOSTRING_TRIPLE_LIMIT

Fields inherited from interface org.apache.jena.graph.Graph

emptyGraph

Constructor Summary

Constructors

Constructor and Description
GraphDataBag(ThresholdPolicy<Triple> thresholdPolicy)

Method Summary

Modifier and Type	Method and Description
void	clear()
int	graphBaseSize()
void	performAdd(Triple t)

Methods inherited from class org.apache.jena.mem.GraphMemBase

close, openAgain

Methods inherited from class org.apache.jena.graph.impl.GraphBase

add, contains, contains, delete, dependsOn, find, find, forTestingOnly_graphBaseFind, getCapabilities, getEventManager, getPrefixMapping, getStatisticsHandler, getTransactionHandler, isClosed, isEmpty, isIsomorphicWith, notifyAdd, notifyDelete, performDelete, remove, size, toString, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.jena.graph.Graph

find

Constructor Detail

GraphDataBag

public GraphDataBag(ThresholdPolicy<Triple> thresholdPolicy)

Method Detail

performAdd

public void performAdd(Triple t)

Specified by:

performAdd in interface GraphWithPerform

Overrides:

performAdd in class GraphBase

graphBaseSize

public int graphBaseSize()

Overrides:

graphBaseSize in class GraphBase

clear

public void clear()

Specified by:

clear in interface Graph

Overrides:

clear in class GraphBase