KeyValueGraph (xdi2-core 0.7.2 API)

java.lang.Object
- xdi2.core.impl.AbstractGraph
- - xdi2.core.impl.keyvalue.KeyValueGraph

All Implemented Interfaces:

Serializable, Comparable<Graph>, Graph
```
public class KeyValueGraph
extends AbstractGraph
implements Graph
```
See Also:
Serialized Form

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`beginTransaction()` Starts a new transaction.
`void`	`close()` Closes the graph.
`void`	`commitTransaction()` Commits the changes made by the transaction.
`KeyValueStore`	`getKeyValueStore()` Returns the key/value store this graph is based on.
`ContextNode`	`getRootContextNode(boolean subgraph)` Gets the local root context node of this graph.
`boolean`	`getSupportGetContextNodes()`
`boolean`	`getSupportGetRelations()`
`void`	`rollbackTransaction()` Rolls back the changes made by the transaction.
`boolean`	`supportsTransactions()` Check if this graph supports transactions.

Methods inherited from class xdi2.core.impl.AbstractGraph
clear, compareTo, containsStatement, equals, getAllStatementCount, getAllStatements, getDeepContextNode, getDeepContextNode, getDeepLiteralNode, getDeepLiteralNode, getDeepNode, getDeepNode, getGraphFactory, getIdentifier, getRootContextNode, getStatement, hashCode, isEmpty, setDeepContextNode, setDeepLiteralNode, setDeepNode, setStatement, toString, toString, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface xdi2.core.Graph
clear, containsStatement, getAllStatementCount, getAllStatements, getDeepContextNode, getDeepContextNode, getDeepLiteralNode, getDeepLiteralNode, getDeepNode, getDeepNode, getGraphFactory, getIdentifier, getRootContextNode, getStatement, isEmpty, setDeepContextNode, setDeepLiteralNode, setDeepNode, setStatement, toString, toString

Methods inherited from interface java.lang.Comparable
compareTo

- Method Detail
  - getRootContextNode
```
public ContextNode getRootContextNode(boolean subgraph)
```
    Description copied from interface: Graph
    
    Gets the local root context node of this graph.
    
    Specified by:
    
    getRootContextNode in interface Graph
    
    Parameters:
    subgraph - This is simply a hint to the implementation whether child context nodes will subsequently be requested. Implementations may or may not actually use this parameter.
    
    Returns:
    The graph's local root context node.
  - close
```
public void close()
```
    Description copied from interface: Graph
    
    Closes the graph. This should be called when work on the graph is done.
    
    Specified by:
    
    close in interface Graph
  - supportsTransactions
```
public boolean supportsTransactions()
```
    Description copied from interface: Graph
    
    Check if this graph supports transactions.
    
    Specified by:
    
    supportsTransactions in interface Graph
    
    Overrides:
    
    supportsTransactions in class AbstractGraph
  - beginTransaction
```
public void beginTransaction()
```
    Description copied from interface: Graph
    
    Starts a new transaction.
    
    Specified by:
    
    beginTransaction in interface Graph
    
    Overrides:
    
    beginTransaction in class AbstractGraph
  - commitTransaction
```
public void commitTransaction()
```
    Description copied from interface: Graph
    
    Commits the changes made by the transaction.
    
    Specified by:
    
    commitTransaction in interface Graph
    
    Overrides:
    
    commitTransaction in class AbstractGraph
  - rollbackTransaction
```
public void rollbackTransaction()
```
    Description copied from interface: Graph
    
    Rolls back the changes made by the transaction.
    
    Specified by:
    
    rollbackTransaction in interface Graph
    
    Overrides:
    
    rollbackTransaction in class AbstractGraph
  - getKeyValueStore
```
public KeyValueStore getKeyValueStore()
```
    Returns the key/value store this graph is based on. WARNING: Do not alter the contents of the store using this method, or your XDI graph may get corrupted.
    
    Returns:
    The key/value store backing this graph.
  - getSupportGetContextNodes
```
public boolean getSupportGetContextNodes()
```
    Returns:
    True, if this key/value graph supports enumerating contexts.
  - getSupportGetRelations
```
public boolean getSupportGetRelations()
```
    Returns:
    True, if this key/value graph supports enumerating relations.

Class KeyValueGraph

Method Summary

Methods inherited from class xdi2.core.impl.AbstractGraph

Methods inherited from class java.lang.Object

Methods inherited from interface xdi2.core.Graph

Methods inherited from interface java.lang.Comparable

Method Detail

getRootContextNode

close

supportsTransactions

beginTransaction

commitTransaction

rollbackTransaction

getKeyValueStore

getSupportGetContextNodes

getSupportGetRelations