org.alfresco.jlan.server.filesys.db

Interface DBQueueInterface

All Known Implementing Classes:

DerbyDBInterface, MySQLDBInterface, OracleDBInterface, PostgreSQLDBInterface

public interface DBQueueInterface

Database Queue Interface

The database queue interface provides methods for the queueing of file load and save requests for the multi-threaded background load/save class.

Author:

gkspencer

Method Summary

Methods

Modifier and Type	Method and Description
void	deleteFileRequest(FileRequest fileReq) Delete a file request from the pending queue.
int	loadFileRequests(int seqNo, int reqType, FileRequestQueue reqQueue, int recLimit) Load a block of file requests from the database into the specified queue.
MultipleFileRequest	loadTransactionRequest(MultipleFileRequest tranReq) Load a transaction request from the queue.
FileRequestQueue	performQueueCleanup(File tempDir, String tempDirPrefix, String tempFilePrefix, String jarFilePrefix) Perform a queue cleanup deleting temporary cache files that do not have an associated save or transaction request.
void	queueFileRequest(FileRequest fileReq) Queue a file request.

Method Detail

queueFileRequest

void queueFileRequest(FileRequest fileReq)
                      throws DBException

Queue a file request.

Parameters:

fileReq - FileRequest

Throws:

DBException

performQueueCleanup

FileRequestQueue performQueueCleanup(File tempDir,
                                   String tempDirPrefix,
                                   String tempFilePrefix,
                                   String jarFilePrefix)
                                     throws DBException

Perform a queue cleanup deleting temporary cache files that do not have an associated save or transaction request.

Parameters:

tempDir - File

tempDirPrefix - String

tempFilePrefix - String

jarFilePrefix - String

Returns:

FileRequestQueue

Throws:

DBException

deleteFileRequest

void deleteFileRequest(FileRequest fileReq)
                       throws DBException

Delete a file request from the pending queue.

Parameters:

fileReq - FileRequest

Throws:

DBException

loadFileRequests

int loadFileRequests(int seqNo,
                   int reqType,
                   FileRequestQueue reqQueue,
                   int recLimit)
                     throws DBException

Load a block of file requests from the database into the specified queue.

Parameters:

seqNo - int

reqType - int

reqQueue - FileRequestQueue

recLimit - int

Returns:

int

Throws:

DBException

loadTransactionRequest

MultipleFileRequest loadTransactionRequest(MultipleFileRequest tranReq)
                                           throws DBException

Load a transaction request from the queue.

Parameters:

tranReq - MultipleFileRequest

Returns:

MultipleFileRequest

Throws:

DBException