iot.jcypher.database.remote

Class RemoteDBAccess

java.lang.Object

iot.jcypher.database.remote.RemoteDBAccess

All Implemented Interfaces:

IDBAccess, IDBAccessInit

public class RemoteDBAccess
extends Object
implements IDBAccessInit

Constructor Summary

Constructors

Constructor and Description
RemoteDBAccess()

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
JcQueryResult	execute(JcQuery query) execute a query against a database
List<JcQueryResult>	execute(List<JcQuery> queries) execute a list of queries against a database
DBType	getDBType() Answer the type of database access (REMOTE, EMBEDDED, IN_MEMORY)
ITransaction	getTX() Answer the transaction which was opened in the context of the current thread.
void	initialize(Properties properties) set initialization properties
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

Constructor Detail

RemoteDBAccess

public RemoteDBAccess()

Method Detail

initialize

public void initialize(Properties properties)

Description copied from interface: IDBAccessInit

set initialization properties

Specified by:

initialize in interface IDBAccessInit

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:

getDBType

public DBType getDBType()

Description copied from interface: IDBAccess

Answer the type of database access (REMOTE, EMBEDDED, IN_MEMORY)

Specified by:

getDBType in interface IDBAccess

Returns:

a DBType

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