Package org.neotropic.kuwaiba.core.persistence.reference.neo4j

Class ConnectionManagerImpl

java.lang.Object

org.neotropic.kuwaiba.core.persistence.reference.neo4j.ConnectionManagerImpl

All Implemented Interfaces:

ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

@Service
public class ConnectionManagerImpl
extends Object
implements ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

ConnectionManager reference implementation using Neo4J as DBMS

Author:

Adrian Martinez Molina <adrian.martinez@kuwaiba.org>

Field Summary

Fields

Modifier and Type	Field	Description
static org.neo4j.graphdb.config.Setting<Boolean>	udc_enabled	Custom configuration entry to disable the N4J's Usage Data Collector.

Constructor Summary

Constructors

Constructor	Description
ConnectionManagerImpl()

Method Summary

Modifier and Type	Method	Description
void	closeConnection()	Closes the connection with the database
void	commitTransaction()	Commits the current transaction (if supported by the backend)
String	getConnectionDetails()	Textual description a bout the connection
org.neo4j.graphdb.GraphDatabaseService	getConnectionHandler()	Returns the connection handler, which depends on the kind of backed being used.
List<ConnectionManager>	getConnectionPool()	Gets the list of spawned connections
boolean	isSpawned()	Tells if the current manager is one spawned from another.
void	openConnection()	Opens a database connection (an probably initialize the connection handler)
void	rollbackTransaction()	Rolls back the current transaction (if supported by the backend)
void	setConfiguration(Properties properties)	Sets the properties necessary to establish and manage the connection with the database (login, passwd, hostname, etc).
void	shutDown()	Releases the resources associated to this ConnectionManager, assuming that closeConnection didn't do it completely.
ConnectionManager	spawnConnection()	Creates a new connection from the original one
void	startTransaction()	Starts a transaction (if supported by the backend)

Methods inherited from class java.lang.Object

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

Field Detail

udc_enabled

public static final org.neo4j.graphdb.config.Setting<Boolean> udc_enabled

Custom configuration entry to disable the N4J's Usage Data Collector.

Constructor Detail

ConnectionManagerImpl

public ConnectionManagerImpl()

Method Detail

closeConnection

public void closeConnection()

Description copied from interface: ConnectionManager

Closes the connection with the database

Specified by:

closeConnection in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

commitTransaction

public void commitTransaction()

Description copied from interface: ConnectionManager

Commits the current transaction (if supported by the backend)

Specified by:

commitTransaction in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

getConnectionPool

public List<ConnectionManager> getConnectionPool()

Description copied from interface: ConnectionManager

Gets the list of spawned connections

Specified by:

getConnectionPool in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

Returns:

The list of spawned connections

isSpawned

public boolean isSpawned()

Description copied from interface: ConnectionManager

Tells if the current manager is one spawned from another.

Specified by:

isSpawned in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

Returns:

openConnection

public void openConnection()
                    throws ConnectionException

Description copied from interface: ConnectionManager

Opens a database connection (an probably initialize the connection handler)

Specified by:

openConnection in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

Throws:

ConnectionException - If the attempt to open the connection to the database failed

rollbackTransaction

public void rollbackTransaction()

Description copied from interface: ConnectionManager

Rolls back the current transaction (if supported by the backend)

Specified by:

rollbackTransaction in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

spawnConnection

public ConnectionManager spawnConnection()

Description copied from interface: ConnectionManager

Creates a new connection from the original one

Specified by:

spawnConnection in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

Returns:

Another connection manager

startTransaction

public void startTransaction()

Description copied from interface: ConnectionManager

Starts a transaction (if supported by the backend)

Specified by:

startTransaction in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

getConnectionHandler

public org.neo4j.graphdb.GraphDatabaseService getConnectionHandler()

Description copied from interface: ConnectionManager

Returns the connection handler, which depends on the kind of backed being used.

Specified by:

getConnectionHandler in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

Returns:

shutDown

public void shutDown()

Description copied from interface: ConnectionManager

Releases the resources associated to this ConnectionManager, assuming that closeConnection didn't do it completely.

Specified by:

shutDown in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

getConnectionDetails

public String getConnectionDetails()

Description copied from interface: ConnectionManager

Textual description a bout the connection

Specified by:

getConnectionDetails in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

Returns:

setConfiguration

public void setConfiguration(Properties properties)

Description copied from interface: ConnectionManager

Sets the properties necessary to establish and manage the connection with the database (login, passwd, hostname, etc). It is typically called before openConnection

Specified by:

setConfiguration in interface ConnectionManager<org.neo4j.graphdb.GraphDatabaseService>

Parameters:

properties - A properties object with the pairs name-value of all properties to be set.