org.neo4j.kernel
Class HighlyAvailableGraphDatabase

java.lang.Object
  org.neo4j.kernel.HighlyAvailableGraphDatabase

All Implemented Interfaces:

GraphDatabaseService, GraphDatabaseSPI

public class HighlyAvailableGraphDatabase
extends Object
implements GraphDatabaseService, GraphDatabaseSPI

Nested Class Summary

static class	HighlyAvailableGraphDatabase.BranchedDataPolicy
static interface	HighlyAvailableGraphDatabase.Configuration

Field Summary

protected HighlyAvailableGraphDatabase.Configuration	configuration
static String	COPY_FROM_MASTER_TEMP
protected org.neo4j.kernel.impl.nioneo.store.StoreId	storeId
protected org.neo4j.com.StoreIdGetter	storeIdGetter

Constructor Summary

HighlyAvailableGraphDatabase(String storeDir, Map<String,String> config)
Will instantiate its own ZooKeeper broker

Method Summary

Transaction	beginTx() Starts a new transaction and associates it with the current thread.
protected void	close()
protected Broker	createBroker()
protected ClusterClient	createClusterClient()
Node	createNode() Creates a new node.
Iterable<Node>	getAllNodes() Returns all nodes in the graph.
Broker	getBroker()
DiagnosticsManager	getDiagnosticsManager()
IdGeneratorFactory	getIdGeneratorFactory()
KernelData	getKernelData()
org.neo4j.kernel.impl.core.KernelPanicEventGenerator	getKernelPanicGenerator()
org.neo4j.kernel.impl.transaction.LockManager	getLockManager()
org.neo4j.kernel.impl.core.LockReleaser	getLockReleaser()
protected int	getMachineId()
<T> T	getManagementBean(Class<T> type)
<T> Collection<T>	getManagementBeans(Class<T> type)
MasterServer	getMasterServerIfMaster()
org.neo4j.kernel.impl.util.StringLogger	getMessageLog()
Node	getNodeById(long id) Looks up a node by id.
org.neo4j.kernel.impl.core.NodeManager	getNodeManager()
org.neo4j.kernel.impl.persistence.PersistenceSource	getPersistenceSource()
Node	getReferenceNode() Returns the reference node, which is a "starting point" in the node space.
Relationship	getRelationshipById(long id) Looks up a relationship by id.
org.neo4j.kernel.impl.core.RelationshipTypeHolder	getRelationshipTypeHolder()
Iterable<RelationshipType>	getRelationshipTypes() Returns all relationship types currently in the underlying store.
<T> T	getSingleManagementBean(Class<T> type)
String	getStoreDir()
org.neo4j.com.StoreIdGetter	getStoreIdGetter()
TransactionManager	getTxManager()
org.neo4j.kernel.impl.transaction.XaDataSourceManager	getXaDataSourceManager()
IndexManager	index() Returns the IndexManager paired with this graph database service and is the entry point for managing indexes coupled with this database.
void	internalShutdown(boolean rotateLogs)
boolean	isMaster()
void	pullUpdates()
protected void	reevaluateMyself(org.neo4j.kernel.impl.nioneo.store.StoreId storeId)
KernelEventHandler	registerKernelEventHandler(KernelEventHandler handler) Registers handler as a handler for kernel events which are generated from different places in the lifecycle of the kernel.
<T> TransactionEventHandler<T>	registerTransactionEventHandler(TransactionEventHandler<T> handler) Registers handler as a handler for transaction events which are generated from different places in the lifecycle of each transaction.
void	shutdown() Shuts down Neo4j.
protected void	start()
String	toString()
TransactionBuilder	tx()
KernelEventHandler	unregisterKernelEventHandler(KernelEventHandler handler) Unregisters handler from the list of kernel event handlers.
<T> TransactionEventHandler<T>	unregisterTransactionEventHandler(TransactionEventHandler<T> handler) Unregisters handler from the list of transaction event handlers.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

COPY_FROM_MASTER_TEMP

public static final String COPY_FROM_MASTER_TEMP

See Also:

Constant Field Values

storeId

protected volatile org.neo4j.kernel.impl.nioneo.store.StoreId storeId

storeIdGetter

protected final org.neo4j.com.StoreIdGetter storeIdGetter

configuration

protected HighlyAvailableGraphDatabase.Configuration configuration

Constructor Detail

HighlyAvailableGraphDatabase

public HighlyAvailableGraphDatabase(String storeDir,
                                    Map<String,String> config)

Will instantiate its own ZooKeeper broker

Method Detail

createNode

public Node createNode()

Description copied from interface: GraphDatabaseService

Creates a new node.

Specified by:

createNode in interface GraphDatabaseService

Returns:

the created node.

getNodeById

public Node getNodeById(long id)

Description copied from interface: GraphDatabaseService

Looks up a node by id.

Specified by:

getNodeById in interface GraphDatabaseService

Parameters:

id - the id of the node

Returns:

the node with id id if found

getReferenceNode

public Node getReferenceNode()

Description copied from interface: GraphDatabaseService

Returns the reference node, which is a "starting point" in the node space. Usually, a client attaches relationships to this node that leads into various parts of the node space. For more information about common node space organizational patterns, see the design guide at wiki.neo4j.org/content/Design_Guide.

Specified by:

getReferenceNode in interface GraphDatabaseService

Returns:

the reference node

getAllNodes

public Iterable<Node> getAllNodes()

Description copied from interface: GraphDatabaseService

Returns all nodes in the graph.

Specified by:

getAllNodes in interface GraphDatabaseService

Returns:

all nodes in the graph.

getRelationshipTypes

public Iterable<RelationshipType> getRelationshipTypes()

Description copied from interface: GraphDatabaseService

Returns all relationship types currently in the underlying store. Relationship types are added to the underlying store the first time they are used in a successfully commited node.createRelationshipTo(...). Note that this method is guaranteed to return all known relationship types, but it does not guarantee that it won't return more than that (e.g. it can return "historic" relationship types that no longer have any relationships in the node space).

Specified by:

getRelationshipTypes in interface GraphDatabaseService

Returns:

all relationship types in the underlying store

getRelationshipById

public Relationship getRelationshipById(long id)

Description copied from interface: GraphDatabaseService

Looks up a relationship by id.

Specified by:

getRelationshipById in interface GraphDatabaseService

Parameters:

id - the id of the relationship

Returns:

the relationship with id id if found

index

public IndexManager index()

Description copied from interface: GraphDatabaseService

Returns the IndexManager paired with this graph database service and is the entry point for managing indexes coupled with this database.

Specified by:

index in interface GraphDatabaseService

Returns:

the IndexManager for this database.

beginTx

public Transaction beginTx()

Description copied from interface: GraphDatabaseService

Starts a new transaction and associates it with the current thread.

Specified by:

beginTx in interface GraphDatabaseService

Returns:

a new transaction instance

shutdown

public void shutdown()

Description copied from interface: GraphDatabaseService

Shuts down Neo4j. After this method has been invoked, it's invalid to invoke any methods in the Neo4j API and all references to this instance of GraphDatabaseService should be discarded.

Specified by:

shutdown in interface GraphDatabaseService

getNodeManager

public org.neo4j.kernel.impl.core.NodeManager getNodeManager()

Specified by:

getNodeManager in interface GraphDatabaseSPI

getLockReleaser

public org.neo4j.kernel.impl.core.LockReleaser getLockReleaser()

Specified by:

getLockReleaser in interface GraphDatabaseSPI

getLockManager

public org.neo4j.kernel.impl.transaction.LockManager getLockManager()

Specified by:

getLockManager in interface GraphDatabaseSPI

getXaDataSourceManager

public org.neo4j.kernel.impl.transaction.XaDataSourceManager getXaDataSourceManager()

Specified by:

getXaDataSourceManager in interface GraphDatabaseSPI

getTxManager

public TransactionManager getTxManager()

Specified by:

getTxManager in interface GraphDatabaseSPI

getDiagnosticsManager

public DiagnosticsManager getDiagnosticsManager()

Specified by:

getDiagnosticsManager in interface GraphDatabaseSPI

getMessageLog

public org.neo4j.kernel.impl.util.StringLogger getMessageLog()

Specified by:

getMessageLog in interface GraphDatabaseSPI

getRelationshipTypeHolder

public org.neo4j.kernel.impl.core.RelationshipTypeHolder getRelationshipTypeHolder()

Specified by:

getRelationshipTypeHolder in interface GraphDatabaseSPI

getIdGeneratorFactory

public IdGeneratorFactory getIdGeneratorFactory()

Specified by:

getIdGeneratorFactory in interface GraphDatabaseSPI

getStoreIdGetter

public org.neo4j.com.StoreIdGetter getStoreIdGetter()

getKernelData

public KernelData getKernelData()

Specified by:

getKernelData in interface GraphDatabaseSPI

getSingleManagementBean

public <T> T getSingleManagementBean(Class<T> type)

Specified by:

getSingleManagementBean in interface GraphDatabaseSPI

start

protected void start()

getBroker

public Broker getBroker()

pullUpdates

public void pullUpdates()

getManagementBeans

public <T> Collection<T> getManagementBeans(Class<T> type)

Specified by:

getManagementBeans in interface GraphDatabaseSPI

getManagementBean

public final <T> T getManagementBean(Class<T> type)

toString

public String toString()

Overrides:

toString in class Object

reevaluateMyself

protected void reevaluateMyself(org.neo4j.kernel.impl.nioneo.store.StoreId storeId)

tx

public TransactionBuilder tx()

Specified by:

tx in interface GraphDatabaseSPI

internalShutdown

public void internalShutdown(boolean rotateLogs)

close

protected void close()

registerKernelEventHandler

public KernelEventHandler registerKernelEventHandler(KernelEventHandler handler)

Description copied from interface: GraphDatabaseService

Registers handler as a handler for kernel events which are generated from different places in the lifecycle of the kernel. To guarantee proper behaviour the handler should be registered right after the graph database has been started. If the specified handler instance has already been registered this method will do nothing.

Specified by:

registerKernelEventHandler in interface GraphDatabaseService

Parameters:

handler - the handler to receive events about different states in the kernel lifecycle.

Returns:

the handler passed in as the argument.

registerTransactionEventHandler

public <T> TransactionEventHandler<T> registerTransactionEventHandler(TransactionEventHandler<T> handler)

Description copied from interface: GraphDatabaseService

Registers handler as a handler for transaction events which are generated from different places in the lifecycle of each transaction. To guarantee that the handler gets all events properly it shouldn't be registered when the application is running (i.e. in the middle of one or more transactions). If the specified handler instance has already been registered this method will do nothing.

Specified by:

registerTransactionEventHandler in interface GraphDatabaseService

Type Parameters:

T - the type of state object used in the handler, see more documentation about it at TransactionEventHandler.

Parameters:

handler - the handler to receive events about different states in transaction lifecycles.

Returns:

the handler passed in as the argument.

unregisterKernelEventHandler

public KernelEventHandler unregisterKernelEventHandler(KernelEventHandler handler)

Description copied from interface: GraphDatabaseService

Unregisters handler from the list of kernel event handlers. If handler hasn't been registered with GraphDatabaseService.registerKernelEventHandler(KernelEventHandler) prior to calling this method an IllegalStateException will be thrown. After a successful call to this method the handler will no longer receive any kernel events.

Specified by:

unregisterKernelEventHandler in interface GraphDatabaseService

Parameters:

handler - the handler to receive events about different states in the kernel lifecycle.

Returns:

the handler passed in as the argument.

unregisterTransactionEventHandler

public <T> TransactionEventHandler<T> unregisterTransactionEventHandler(TransactionEventHandler<T> handler)

Description copied from interface: GraphDatabaseService

Unregisters handler from the list of transaction event handlers. If handler hasn't been registered with GraphDatabaseService.registerTransactionEventHandler(TransactionEventHandler) prior to calling this method an IllegalStateException will be thrown. After a successful call to this method the handler will no longer receive any transaction events.

Specified by:

unregisterTransactionEventHandler in interface GraphDatabaseService

Type Parameters:

T - the type of state object used in the handler, see more documentation about it at TransactionEventHandler.

Parameters:

handler - the handler to receive events about different states in transaction lifecycles.

Returns:

the handler passed in as the argument.

getMasterServerIfMaster

public MasterServer getMasterServerIfMaster()

getMachineId

protected int getMachineId()

isMaster

public boolean isMaster()

createBroker

protected Broker createBroker()

createClusterClient

protected ClusterClient createClusterClient()

getStoreDir

public String getStoreDir()

Specified by:

getStoreDir in interface GraphDatabaseSPI

getKernelPanicGenerator

public org.neo4j.kernel.impl.core.KernelPanicEventGenerator getKernelPanicGenerator()

Specified by:

getKernelPanicGenerator in interface GraphDatabaseSPI

getPersistenceSource

public org.neo4j.kernel.impl.persistence.PersistenceSource getPersistenceSource()

Specified by:

getPersistenceSource in interface GraphDatabaseSPI