Documentation

SeedDMS_Core_DatabaseAccess
in package

Class to represent the database access for the document management This class uses PDO for the actual database access.

Tags
category

DMS

author

Uwe Steinmann uwe@steinmann.cx

copyright

Copyright (C) 2012 Uwe Steinmann

version

Release: @package_version@

Table of Contents

Properties

$_debug  : bool
$_database  : string
$_driver  : string
$_hostname  : string
$_passw  : string
$_port  : int
$_user  : string
$_conn  : object
$_connected  : bool
$_intransaction  : bool
$_logfile  : string
$_logfp  : resource
$_ttapproveid  : bool
$_ttcontentid  : bool
$_ttreviewid  : bool
$_ttstatid  : bool
$_useviews  : bool

Methods

__construct()  : mixed
Constructor of SeedDMS_Core_DatabaseAccess
__destruct()  : mixed
Destructor of SeedDMS_Core_DatabaseAccess
castToText()  : string
Return sql statement for returning the current timestamp
commitTransaction()  : mixed
concat()  : string
Return sql to concat strings or fields
connect()  : bool
Connect to database
createDump()  : bool
Create an sql dump of the complete database
createTemporaryTable()  : bool
Create various temporary tables or view to speed up and simplify sql queries
dropTemporaryTable()  : bool
Drop various temporary tables to force recreation when next time needed
ensureConnected()  : bool
Make sure a database connection exisits
getCurrentDatetime()  : string
Return sql statement for returning the current date and time in format Y-m-d H:i:s
getCurrentTimestamp()  : string
Return sql statement for returning the current timestamp
getDateExtract()  : string
Return sql statement for extracting the date part from a field containing a unix timestamp
getDriver()  : string
Return driver
getErrorMsg()  : mixed
getErrorNo()  : mixed
getInsertID()  : int
Return the id of the last instert record
getResult()  : bool
Execute SQL query
getResultArray()  : array<string|int, mixed>|bool
Execute SQL query and return result
hasTable()  : bool
Check if database has a table
inTransaction()  : mixed
qstr()  : string
Sanitize String used in database operations
rbt()  : string
Replace back ticks by '"'
rollbackTransaction()  : mixed
setLogFp()  : mixed
Set the file pointer to a log file
startTransaction()  : mixed
TableList()  : array<string|int, string>|bool
Return list of all database tables
useViews()  : mixed
Turn on views instead of temp. tables
ViewList()  : array<string|int, mixed>
Return list of all database views
__createTemporaryTable()  : bool
Create various temporary tables to speed up and simplify sql queries
__createView()  : bool
Create various views to speed up and simplify sql queries
__dropTemporaryTable()  : bool
Drop various temporary tables to enforce recreation when needed

Properties

$_driver

protected string $_driver

name of database driver (mysql or sqlite)

$_connected

private bool $_connected

set to true if connection to database is established

$_intransaction

private bool $_intransaction

set to true if in a database transaction

$_logfile

private string $_logfile

set a valid file name for logging all sql queries

$_ttapproveid

private bool $_ttapproveid

set to true if temp. table for approvals has been created

$_ttcontentid

private bool $_ttcontentid

set to true if temp. table for doc content has been created

$_ttreviewid

private bool $_ttreviewid

set to true if temp. table for tree view has been created

$_ttstatid

private bool $_ttstatid

set to true if temp. table for doc status has been created

$_useviews

private bool $_useviews

set to true if views instead of temp. tables shall be used

Methods

__construct()

Constructor of SeedDMS_Core_DatabaseAccess

public __construct(string $driver, string $hostname, string $user, string $passw[, bool|string $database = false ]) : mixed

Sets all database parameters but does not connect.

Parameters
$driver : string

the database type e.g. mysql, sqlite

$hostname : string

host of database server

$user : string

name of user having access to database

$passw : string

password of user

$database : bool|string = false

name of database

__destruct()

Destructor of SeedDMS_Core_DatabaseAccess

public __destruct() : mixed

castToText()

Return sql statement for returning the current timestamp

public castToText( $field) : string
Parameters
$field :
Return values
string —

sql code

concat()

Return sql to concat strings or fields

public concat(array<string|int, mixed> $arr) : string
Parameters
$arr : array<string|int, mixed>

list of field names or strings

Return values
string —

concated string

connect()

Connect to database

public connect() : bool
Return values
bool —

true if connection could be established, otherwise false

createDump()

Create an sql dump of the complete database

public createDump(resource $fp) : bool
Parameters
$fp : resource

name of dump file

Return values
bool

createTemporaryTable()

Create various temporary tables or view to speed up and simplify sql queries

public createTemporaryTable(string $tableName[, bool $override = false ]) : bool
Parameters
$tableName : string
$override : bool = false
Return values
bool

dropTemporaryTable()

Drop various temporary tables to force recreation when next time needed

public dropTemporaryTable(string $tableName) : bool
Parameters
$tableName : string
Return values
bool

ensureConnected()

Make sure a database connection exisits

public ensureConnected() : bool

This function checks for a database connection. If it does not exists it will reconnect.

Return values
bool —

true if connection is established, otherwise false

getCurrentDatetime()

Return sql statement for returning the current date and time in format Y-m-d H:i:s

public getCurrentDatetime([mixed $offset = 0 ]) : string
Parameters
$offset : mixed = 0
Return values
string —

sql code

getCurrentTimestamp()

Return sql statement for returning the current timestamp

public getCurrentTimestamp() : string
Return values
string —

sql code

getDateExtract()

Return sql statement for extracting the date part from a field containing a unix timestamp

public getDateExtract(string $fieldname[, string $format = '%Y-%m-%d' ]) : string
Parameters
$fieldname : string

name of field containing the timestamp

$format : string = '%Y-%m-%d'
Return values
string —

sql code

getDriver()

Return driver

public getDriver() : string
Return values
string —

name of driver as set in constructor

getInsertID()

Return the id of the last instert record

public getInsertID([string $tablename = '' ][, string $fieldname = 'id' ]) : int
Parameters
$tablename : string = ''
$fieldname : string = 'id'
Return values
int —

id used in last autoincrement

getResult()

Execute SQL query

public getResult(string $queryStr[, bool $retick = true ]) : bool

Call this function only with sql query which do not return data records.

Parameters
$queryStr : string

sql query

$retick : bool = true

replace all '`' by '"'

Return values
bool —

true if query could be executed otherwise false

getResultArray()

Execute SQL query and return result

public getResultArray(string $queryStr[, bool $retick = true ]) : array<string|int, mixed>|bool

Call this function only with sql query which return data records.

Parameters
$queryStr : string

sql query

$retick : bool = true
Return values
array<string|int, mixed>|bool —

data if query could be executed otherwise false

hasTable()

Check if database has a table

public hasTable(mixed $name) : bool

This function will check if the database has a table with the given table name

Parameters
$name : mixed
Return values
bool —

true if table exists, otherwise false

qstr()

Sanitize String used in database operations

public qstr(string $text) : string
Parameters
$text : string
Return values
string —

sanitized string

rbt()

Replace back ticks by '"'

public rbt(string $text) : string
Parameters
$text : string
Return values
string —

sanitized string

setLogFp()

Set the file pointer to a log file

public setLogFp(mixed $fp) : mixed

Once it is set, all queries will be logged into this file

Parameters
$fp : mixed

TableList()

Return list of all database tables

public TableList() : array<string|int, string>|bool

This function is used to retrieve a list of database tables for backup

Return values
array<string|int, string>|bool —

list of table names

useViews()

Turn on views instead of temp. tables

public useViews(bool $onoff) : mixed
Parameters
$onoff : bool

turn use of views instead of temp. table on/off

ViewList()

Return list of all database views

public ViewList() : array<string|int, mixed>

This function is used to retrieve a list of database views

Return values
array<string|int, mixed> —

list of view names

__createTemporaryTable()

Create various temporary tables to speed up and simplify sql queries

private __createTemporaryTable(string $tableName[, bool $override = false ]) : bool
Parameters
$tableName : string
$override : bool = false
Return values
bool

__createView()

Create various views to speed up and simplify sql queries

private __createView(string $tableName[, bool $override = false ]) : bool
Parameters
$tableName : string
$override : bool = false
Return values
bool

__dropTemporaryTable()

Drop various temporary tables to enforce recreation when needed

private __dropTemporaryTable(string $tableName) : bool
Parameters
$tableName : string
Return values
bool 

        

        
    




    

    

                                

                

                                
    

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