iot.jcypher.database.embedded

Class AbstractEmbeddedDBAccess

java.lang.Object

iot.jcypher.database.embedded.AbstractEmbeddedDBAccess

All Implemented Interfaces:

IDBAccess, IDBAccessInit

Direct Known Subclasses:

EmbeddedDBAccess, InMemoryDBAccess

public abstract class AbstractEmbeddedDBAccess
extends Object
implements IDBAccessInit

Field Summary

Fields

Modifier and Type	Field and Description
protected Properties	properties

Constructor Summary

Constructors

Constructor and Description
AbstractEmbeddedDBAccess()

Method Summary

Methods

Modifier and Type	Method and Description
ITransaction	beginTX() create a transaction
List<JcError>	clearDatabase() removes all nodes and relations form the graph database
void	close() close the database connection
protected abstract org.neo4j.graphdb.GraphDatabaseService	createGraphDB()
JcQueryResult	execute(JcQuery query) execute a query against a database
List<JcQueryResult>	execute(List<JcQuery> queries) execute a list of queries against a database
org.neo4j.graphdb.GraphDatabaseService	getGraphDB()
ITransaction	getTX() Answer the transaction which was opened in the context of the current thread.
boolean	isDatabaseEmpty()
void	setAuth(String userId, String password) set user id and password for authentication

Methods inherited from class java.lang.Object

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

Methods inherited from interface iot.jcypher.database.internal.IDBAccessInit

initialize

Methods inherited from interface iot.jcypher.database.IDBAccess

getDBType

Field Detail

properties

protected Properties properties

Constructor Detail

AbstractEmbeddedDBAccess

public AbstractEmbeddedDBAccess()

Method Detail

execute

public JcQueryResult execute(JcQuery query)

Description copied from interface: IDBAccess

execute a query against a database

Specified by:

execute in interface IDBAccess

Parameters:

query - a JcQuery

Returns:

a JcQueryResult

execute

public List<JcQueryResult> execute(List<JcQuery> queries)

Description copied from interface: IDBAccess

execute a list of queries against a database

Specified by:

execute in interface IDBAccess

Returns:

a list of 'JcQueryResult's

clearDatabase

public List<JcError> clearDatabase()

Description copied from interface: IDBAccess

removes all nodes and relations form the graph database

Specified by:

clearDatabase in interface IDBAccess

Returns:

a list of errors which is empty if no errors occurred

beginTX

public ITransaction beginTX()

Description copied from interface: IDBAccess

create a transaction

Specified by:

beginTX in interface IDBAccess

Returns:

an instance of ITransaction

getTX

public ITransaction getTX()

Description copied from interface: IDBAccess

Answer the transaction which was opened in the context of the current thread. Answer null if currently there is no open transaction for the current thread.

Specified by:

getTX in interface IDBAccess

Returns:

isDatabaseEmpty

public boolean isDatabaseEmpty()

Specified by:

isDatabaseEmpty in interface IDBAccess

Returns:

true if not a single node or relation is contained in the graph database

close

public void close()

Description copied from interface: IDBAccess

close the database connection

Specified by:

close in interface IDBAccess

setAuth

public void setAuth(String userId,
           String password)

Description copied from interface: IDBAccessInit

set user id and password for authentication

Specified by:

setAuth in interface IDBAccessInit

createGraphDB

protected abstract org.neo4j.graphdb.GraphDatabaseService createGraphDB()

getGraphDB

public org.neo4j.graphdb.GraphDatabaseService getGraphDB()