Package org.apache.jena.jdbc.mem

Class MemDriver

java.lang.Object

org.apache.jena.jdbc.JenaDriver

org.apache.jena.jdbc.mem.MemDriver

All Implemented Interfaces:

Driver

public class MemDriver
extends JenaDriver

A Jena JDBC driver which creates connections to in-memory datasets

Connection URL

This driver expects a URL of the following form:

 jdbc:jena:mem:dataset=file.nq
 

The dataset parameter is used to refer to a file containing the dataset you wish to load. Note that if you are creating the connection in code you may alternatively opt to provide a Dataset instance directly as a property named dataset to the JenaDriver.connect(String, Properties) method instead.

If you simply want to start with an empty dataset you may instead set the empty parameter to be true e.g.

 jdbc:jena:mem:empty=true
 

Field Summary

Fields

Modifier and Type	Field	Description
static final String	MEM_DRIVER_PREFIX	Constant for the memory driver prefix, this is appended to the base JenaDriver.DRIVER_PREFIX to form the URL prefix for JDBC Connection URLs for this driver
static final String	PARAM_DATASET	Constant for the connection URL parameter used to specify a dataset file/instance to use
static final String	PARAM_EMPTY	Constant for the connection URL parameter used to specify that an empty dataset should be used.

Fields inherited from class org.apache.jena.jdbc.JenaDriver

DRIVER_PREFIX, NO_AUTO_LOGGING_CONFIGURATION, PARAM_CONFIG, PARAM_JDBC_COMPATIBILITY, PARAM_LOGGING, PARAM_PASSWORD, PARAM_POST_PROCESSOR, PARAM_PRE_PROCESSOR, PARAM_USERNAME

Constructor Summary

Constructors

Constructor	Description
MemDriver()	Creates a new driver

Method Summary

Modifier and Type	Method	Description
static void	register()	Registers the driver with the JDBC DriverManager

Methods inherited from class org.apache.jena.jdbc.JenaDriver

acceptsURL, connect, getMajorVersion, getMinorVersion, getParentLogger, getPropertyInfo, jdbcCompliant

Methods inherited from class java.lang.Object

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

Field Details

MEM_DRIVER_PREFIX

public static final String MEM_DRIVER_PREFIX

Constant for the memory driver prefix, this is appended to the base JenaDriver.DRIVER_PREFIX to form the URL prefix for JDBC Connection URLs for this driver

See Also:

• Constant Field Values

PARAM_DATASET

public static final String PARAM_DATASET

Constant for the connection URL parameter used to specify a dataset file/instance to use

See Also:

• Constant Field Values

PARAM_EMPTY

public static final String PARAM_EMPTY

Constant for the connection URL parameter used to specify that an empty dataset should be used. If PARAM_DATASET is present then that parameter has precedence.

See Also:

• Constant Field Values

Constructor Details

MemDriver

public MemDriver()

Creates a new driver

Method Details

register

public static void register()
                     throws SQLException

Registers the driver with the JDBC DriverManager

Throws:

SQLException - Thrown if the driver cannot be registered