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ODBCFilePlugin Class Reference

#include <ODBCFilePlugin.h>

Inheritance diagram for ODBCFilePlugin:

List of all members.

Public Methods
bool	init ()
CoreError	create (NumID &fileid)
CoreError	open (NumID fileid, NumID &of)
CoreError	remove (NumID fileid)
int64_t	getLength (NumID fileid)
CoreError	write (NumID fileid, char *data, int length)
CoreError	read (NumID fileid, char *data, int length, int &bRead)
CoreError	close (NumID fileid)

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Detailed Description

This file plugin will store files in a PostgreSQL database using ODBC.

CREATE statement for use with a Postgresql server:

CREATE SEQUENCE files_fileid_seq;
br> CREATE TABLE files (
    fileid BIGINT DEFAULT nextval('files_fileid_seq') UNIQUE NOT NULL,
    length BIGINT DEFAULT 0,
    data OID NOT NULL
);


This class is multi-thread enabled.

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Member Function Documentation

CoreError ODBCFilePlugin::close (  NumID    fileid )  [virtual]

Close newly created or open file. Parameters: fileid  the open file to close Returns: status code Implements FilePlugin.

CoreError ODBCFilePlugin::create (  NumID &    fileid )  [virtual]

Create and store a new file on the fileserver. Parameters: fileid  the fileid that was created Returns: status code Implements FilePlugin.

int64_t ODBCFilePlugin::getLength (  NumID    fileid )  [virtual]

Get the length of an open file. Parameters: fileid  the file Returns: the length of the file or -1 on error Implements FilePlugin.

bool ODBCFilePlugin::init (    )  [virtual]

Initialize the plugin Implements Plugin.

CoreError ODBCFilePlugin::open (  NumID    fileid, NumID &    of )  [virtual]

Open and read a file from the fileserver. Parameters: fileid  the file that is to be read of  the reference that receives the open file ID Returns: status code Implements FilePlugin.

CoreError ODBCFilePlugin::read (  NumID    fileid, char *    data, int    length, int &    bRead )  [virtual]

Read binary data from file. Parameters: fileid  the open file to read from data  the buffer that receives the data length  the maximum number of bytes to read bRead  receives the number of bytes actually read Returns: status code Implements FilePlugin.

CoreError ODBCFilePlugin::remove (  NumID    fileid )  [virtual]

Remove a file from the fileserver. Parameters: fileid  the file to remove Returns: status code Implements FilePlugin.

CoreError ODBCFilePlugin::write (  NumID    fileid, char *    data, int    length )  [virtual]

Write binary data to new file. Parameters: fileid  the newly created file to write to data  the data to write length  the length of the data in bytes Returns: status code Implements FilePlugin.

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The documentation for this class was generated from the following files:

• ODBCFilePlugin.h
• ODBCFilePlugin.cpp

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