Package org.apache.activemq.artemis.jdbc.store.file

Class JDBCSequentialFileFactoryDriver

java.lang.Object

org.apache.activemq.artemis.jdbc.store.drivers.AbstractJDBCDriver

org.apache.activemq.artemis.jdbc.store.file.JDBCSequentialFileFactoryDriver

Direct Known Subclasses:

Db2SequentialFileDriver, PostgresSequentialSequentialFileDriver

public class JDBCSequentialFileFactoryDriver
extends AbstractJDBCDriver

Field Summary

Fields

Modifier and Type	Field	Description
protected java.lang.String	appendToLargeObject
protected java.lang.Integer	appendToLargeObjectResultSetConcurrency
protected java.lang.Integer	appendToLargeObjectResultSetType
protected java.lang.String	copyFileRecord
protected java.lang.String	createFile
protected int	createFileAutogeneratedKeys
protected java.lang.String[]	createFileColumnNames
protected java.lang.String	deleteFile
protected java.lang.String	readLargeObject
protected java.lang.String	renameFile
protected java.lang.String	selectFileByFileName
protected java.lang.String	selectFileNamesByExtension

Fields inherited from class org.apache.activemq.artemis.jdbc.store.drivers.AbstractJDBCDriver

connectionProvider, sqlProvider

Method Summary

Modifier and Type	Method	Description
long	calculateReadLength(long objectLength, int bufferSpace, long readPosition)
void	copyFileData(JDBCSequentialFile fileFrom, JDBCSequentialFile fileTo)	Copy the data content of FileFrom to FileTo
void	createFile(JDBCSequentialFile file)	Creates a new database row representing the supplied file.
protected void	createSchema()
void	deleteFile(JDBCSequentialFile file)	Deletes the associated row in the database.
void	destroy()	Drop all tables and data
long	fileExists(JDBCSequentialFile file)	Checks to see if a file with filename and extension exists.
long	getMaxSize()
java.util.List<java.lang.String>	listFiles(java.lang.String extension)
void	loadFile(JDBCSequentialFile file)	Loads an existing file.
void	openFile(JDBCSequentialFile file)	Opens the supplied file.
protected void	prepareStatements()
int	readFromFile(JDBCSequentialFile file, java.nio.ByteBuffer bytes)	Reads data from the file (at file.readPosition) into the byteBuffer.
void	renameFile(JDBCSequentialFile file, java.lang.String newFileName)	Updates the fileName field to the new value.
int	writeToFile(JDBCSequentialFile file, byte[] data)
int	writeToFile(JDBCSequentialFile file, byte[] data, boolean append)	Persists data to this files associated database mapping.

Methods inherited from class org.apache.activemq.artemis.jdbc.store.drivers.AbstractJDBCDriver

createTable, getJdbcConnectionProvider, setJdbcConnectionProvider, setSqlProvider, start, stop

Methods inherited from class java.lang.Object

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

Field Detail

deleteFile

protected java.lang.String deleteFile

createFile

protected java.lang.String createFile

createFileColumnNames

protected java.lang.String[] createFileColumnNames

createFileAutogeneratedKeys

protected int createFileAutogeneratedKeys

selectFileByFileName

protected java.lang.String selectFileByFileName

copyFileRecord

protected java.lang.String copyFileRecord

renameFile

protected java.lang.String renameFile

readLargeObject

protected java.lang.String readLargeObject

appendToLargeObject

protected java.lang.String appendToLargeObject

appendToLargeObjectResultSetType

protected java.lang.Integer appendToLargeObjectResultSetType

appendToLargeObjectResultSetConcurrency

protected java.lang.Integer appendToLargeObjectResultSetConcurrency

selectFileNamesByExtension

protected java.lang.String selectFileNamesByExtension

Method Detail

createSchema

protected void createSchema()
                     throws java.sql.SQLException

Specified by:

createSchema in class AbstractJDBCDriver

Throws:

java.sql.SQLException

prepareStatements

protected void prepareStatements()

Specified by:

prepareStatements in class AbstractJDBCDriver

listFiles

public java.util.List<java.lang.String> listFiles(java.lang.String extension)
                                           throws java.lang.Exception

Throws:

java.lang.Exception

openFile

public void openFile(JDBCSequentialFile file)
              throws java.sql.SQLException

Opens the supplied file. If the file does not exist in the database it will create a new one.

Parameters:

file -

Throws:

java.sql.SQLException

fileExists

public long fileExists(JDBCSequentialFile file)
                throws java.sql.SQLException

Checks to see if a file with filename and extension exists. If so returns the ID of the file or returns -1.

Parameters:

file -

Returns:

Throws:

java.sql.SQLException

loadFile

public void loadFile(JDBCSequentialFile file)
              throws java.sql.SQLException

Loads an existing file.

Parameters:

file -

Throws:

java.sql.SQLException

createFile

public void createFile(JDBCSequentialFile file)
                throws java.sql.SQLException

Creates a new database row representing the supplied file.

Parameters:

file -

Throws:

java.sql.SQLException

renameFile

public void renameFile(JDBCSequentialFile file,
                       java.lang.String newFileName)
                throws java.sql.SQLException

Updates the fileName field to the new value.

Parameters:

file -

newFileName -

Throws:

java.sql.SQLException

deleteFile

public void deleteFile(JDBCSequentialFile file)
                throws java.sql.SQLException

Deletes the associated row in the database.

Parameters:

file -

Throws:

java.sql.SQLException

writeToFile

public int writeToFile(JDBCSequentialFile file,
                       byte[] data)
                throws java.sql.SQLException

Throws:

java.sql.SQLException

writeToFile

public int writeToFile(JDBCSequentialFile file,
                       byte[] data,
                       boolean append)
                throws java.sql.SQLException

Persists data to this files associated database mapping.

Parameters:

file -

data -

Returns:

Throws:

java.sql.SQLException

readFromFile

public int readFromFile(JDBCSequentialFile file,
                        java.nio.ByteBuffer bytes)
                 throws java.sql.SQLException

Reads data from the file (at file.readPosition) into the byteBuffer.

Parameters:

file -

bytes -

Returns:

Throws:

java.sql.SQLException

copyFileData

public void copyFileData(JDBCSequentialFile fileFrom,
                         JDBCSequentialFile fileTo)
                  throws java.sql.SQLException

Copy the data content of FileFrom to FileTo

Parameters:

fileFrom -

fileTo -

Throws:

java.sql.SQLException

destroy

public void destroy()
             throws java.sql.SQLException

Drop all tables and data

Overrides:

destroy in class AbstractJDBCDriver

Throws:

java.sql.SQLException

calculateReadLength

public long calculateReadLength(long objectLength,
                                int bufferSpace,
                                long readPosition)

getMaxSize

public long getMaxSize()