GraphMemBase (Apache Jena)

java.lang.Object
- org.apache.jena.graph.impl.GraphBase
- - org.apache.jena.mem.GraphMemBase

All Implemented Interfaces:

Graph, GraphWithPerform

Direct Known Subclasses:

GraphMem
```
public abstract class GraphMemBase
extends GraphBase
```
GraphMemBase - a common base class for GraphMem and SmallGraphMem. Any GraphMemBase maintains a reference count, set to one when it is created, and incremented by the method openAgain(). When the graph is closed, the count is decrememented, and when it reaches 0, the tables are trashed and GraphBase.close() called. Thus in normal use one close is enough, but GraphMakers using GraphMems can arrange to re-use the same named graph.

Field Summary

Fields
Modifier and Type Field Description

TripleStore store
This Graph's TripleStore.
- 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 Description

GraphMemBase()
initialise a GraphMemBase with its count set to 1.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`	Close this graph; if it is now fully closed, destroy its resources and run the GraphBase close.
`GraphMemBase`	`openAgain()`	Note a re-opening of this graph by incrementing the count.

Methods inherited from class org.apache.jena.graph.impl.GraphBase
add, clear, contains, contains, delete, dependsOn, find, find, forTestingOnly_graphBaseFind, getCapabilities, getEventManager, getPrefixMapping, getTransactionHandler, isClosed, isEmpty, isIsomorphicWith, notifyAdd, notifyDelete, performAdd, 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
add, delete, find, stream, stream

- Field Detail
  - store
```
public final TripleStore store
```
    This Graph's TripleStore. Visible for read-only purposes only.
- Constructor Detail
  - GraphMemBase
```
public GraphMemBase()
```
    initialise a GraphMemBase with its count set to 1.
- Method Detail
  - openAgain
```
public GraphMemBase openAgain()
```
    Note a re-opening of this graph by incrementing the count. Answer this Graph.
  - close
```
public void close()
```
    Close this graph; if it is now fully closed, destroy its resources and run the GraphBase close.
    
    Specified by:
    
    close in interface Graph
    
    Overrides:
    
    close in class GraphBase