Package uk.ac.manchester.spinnaker.storage.sqlite

Class SQLiteBufferStorage

java.lang.Object

uk.ac.manchester.spinnaker.storage.sqlite.SQLiteBufferStorage

All Implemented Interfaces:

BufferManagerStorage, DatabaseAPI, ProxyAwareStorage

public class SQLiteBufferStorage
extends Object
implements BufferManagerStorage

How to actually talk to an SQLite database.

Author:

Donal Fellows

Nested Class Summary

Nested classes/interfaces inherited from interface uk.ac.manchester.spinnaker.storage.BufferManagerStorage

BufferManagerStorage.Region

Constructor Summary

Constructors

Constructor	Description
SQLiteBufferStorage(BufferManagerDatabaseEngine connectionProvider)	Create an instance.

Method Summary

Modifier and Type	Method	Description
void	addRecordingContents(BufferManagerStorage.Region region, byte[] contents)	Extract some bytes to the database.
byte[]	getContents(BufferManagerStorage.Region region)	Retrieves some bytes from the database.
List<CoreLocation>	getCoresWithStorage()	Get a list of all cores that have data stored in the database.
ProxyInformation	getProxyInformation()	Get the proxy information from the database.
List<Integer>	getRegionsWithStorage(HasCoreLocation core)	Get a list of all regions for a particular core that have data stored in the database.
void	insertMockExtraction()
protected static void	setArguments(PreparedStatement statement, Object... args)	Set the arguments to a prepared statement.

Methods inherited from class java.lang.Object

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

Methods inherited from interface uk.ac.manchester.spinnaker.storage.BufferManagerStorage

addRecordingContents, deleteRegionContents, storeDSEContents, storeRegionContents

Methods inherited from interface uk.ac.manchester.spinnaker.storage.ProxyAwareStorage

getProxyInformation

Constructor Details

SQLiteBufferStorage

public SQLiteBufferStorage(BufferManagerDatabaseEngine connectionProvider)

Create an instance.

Parameters:

connectionProvider - The connection provider that will be asked for how to talk SQL to the database.

Method Details

insertMockExtraction

public void insertMockExtraction() throws StorageException

Specified by:

insertMockExtraction in interface BufferManagerStorage

Throws:

StorageException

addRecordingContents

public void addRecordingContents(BufferManagerStorage.Region region, byte[] contents) throws StorageException

Description copied from interface: BufferManagerStorage

Extract some bytes to the database. The bytes represent the contents of a recording region of a particular SpiNNaker core.

Specified by:

addRecordingContents in interface BufferManagerStorage

Parameters:

region - The recording region doing the recording.

contents - The bytes to append.

Throws:

StorageException - If anything goes wrong.

getContents

public byte[] getContents(BufferManagerStorage.Region region) throws StorageException

Description copied from interface: BufferManagerStorage

Retrieves some bytes from the database. The bytes represent the contents of a recording region of a particular SpiNNaker core.

Specified by:

getContents in interface BufferManagerStorage

Parameters:

region - The (DSE) region descriptor.

Returns:

The region contents.

Throws:

StorageException - If anything goes wrong.

getCoresWithStorage

public List<CoreLocation> getCoresWithStorage() throws StorageException

Description copied from interface: BufferManagerStorage

Get a list of all cores that have data stored in the database. Warning: this is a potentially expensive operation!

Specified by:

getCoresWithStorage in interface BufferManagerStorage

Returns:

A list of cores for which something is stored.

Throws:

StorageException - If anything goes wrong.

getRegionsWithStorage

public List<Integer> getRegionsWithStorage(HasCoreLocation core) throws StorageException

Description copied from interface: BufferManagerStorage

Get a list of all regions for a particular core that have data stored in the database.

Specified by:

getRegionsWithStorage in interface BufferManagerStorage

Parameters:

core - The core that has the memory regions.

Returns:

A list of region IDs for which something is stored.

Throws:

StorageException - If anything goes wrong.

getProxyInformation

public ProxyInformation getProxyInformation() throws StorageException

Description copied from interface: ProxyAwareStorage

Get the proxy information from the database.

Specified by:

getProxyInformation in interface ProxyAwareStorage

Returns:

The proxy information, or null if none defined. When there is no proxy, only direct connections to SpiNNaker are possible.

Throws:

StorageException - If anything goes wrong.

setArguments

protected static void setArguments(PreparedStatement statement, Object... args) throws SQLException

Set the arguments to a prepared statement. Convenience method.

Parameters:

statement - The prepared statement

args - The arguments to set. Each may be Boolean, Integer, Long, Double, String, byte[], or null.

Throws:

SQLException - If the prepared statement is not currently open.