MemDriver (Apache Jena - JDBC In-Memory Driver 4.3.0)

java.lang.Object
- org.apache.jena.jdbc.JenaDriver
- - org.apache.jena.jdbc.mem.MemDriver

All Implemented Interfaces:

java.sql.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 java.lang.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 java.lang.String`	`PARAM_DATASET`	Constant for the connection URL parameter used to specify a dataset file/instance to use
`static java.lang.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

All Methods Static Methods Concrete Methods
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 Detail
  - MEM_DRIVER_PREFIX
```
public static final java.lang.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 java.lang.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 java.lang.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 Detail
  - MemDriver
```
public MemDriver()
```
    Creates a new driver
- Method Detail
  - register
```
public static void register()
                     throws java.sql.SQLException
```
    Registers the driver with the JDBC DriverManager
    
    Throws:
    
    java.sql.SQLException - Thrown if the driver cannot be registered