P2Datas Class Reference

Used to get datas from queries. More...

Public Member Functions
def	__init__
	Instanciate a new P2Datas object.
def	populate
	Trigger the queries filling with data from the database.
def	getPlotData
	Write GnuPlot's datas temporary file.
def	getPlotCommand
	Return the GnuPlot's plot command with the good arguments.
def	getDateTimeFormats
	Return the time format to use giving the queries.

Static Public Member Functions
def	queryToDict
	Return a dict of "option"=>"value" from a query string.
def	fillQuery
	Fill a query with datas.

Data Fields
	db
	The Sqlite database object.
	queries
	The query list.
	maxDiff
	The larger range between a begin and a end in seconds.
	sameRange
	Set to True if every handled query have the same date range.
	qArgs
	Store query's arguments.
	tmpfile
	Store the GnuPlot's data temporary file name.

Static Public Attributes
dictionary	argsShort = {'b' : 'begin', 'e' : 'end', 't' : 'time', 'f' : 'format', 'd':'data', 'n':'num', 'y':'yaxe', 's':'style', 'c':'color', 'l':'label', 'sc':'scale', 'a':'add' }
	Alias for one letter query parameter to string parameter.
list	argsToNone = ['begin','end','time']
	List of argument that have to be set to None after the P2Query creation.

Detailed Description

Used to get datas from queries.

This object handle multiple query's and make request to the Sqlite database.

Definition at line 183 of file p2data.py.

Constructor & Destructor Documentation

def __init__	(		self,
			dbFile,
			queries,
			queryArgSep
	)

Instanciate a new P2Datas object.

Parameters

dbFile	is the sqlite db file
queries	is a query string array
queryArgSep	is the separator between two query's argument

Definition at line 195 of file p2data.py.

Member Function Documentation

def fillQuery (   datas,   queries  )

static

Fill a query with datas.

Parameters

datas	An array of data
queries	An array of query to fill

Definition at line 264 of file p2data.py.

References p2data.data2List(), and P2Msg.hex2list().

def getDateTimeFormats

(

self

)

Return the time format to use giving the queries.

Find a good dateTimeFormat for GnuPlot's date display giving the date range of each query

Definition at line 453 of file p2data.py.

References P2Datas.maxDiff, and P2Datas.sameRange.

def getPlotCommand

(

self

)

Return the GnuPlot's plot command with the good arguments.

Returns

A string representing a GnuPlot's plot command

Definition at line 388 of file p2data.py.

References p2data.colNames(), P2Datas.getPlotData(), P2Datas.qArgs, P2Datas.queries, and P2Datas.tmpfile.

def getPlotData	(		self,
			csv = False,
			outfd = None,
			sep = None
	)

Write GnuPlot's datas temporary file.

Use handled query to create and populate GnuPlot's temporary files.

Definition at line 313 of file p2data.py.

References P2Datas.maxDiff, P2Datas.qArgs, P2Datas.queries, P2Datas.sameRange, and P2Datas.tmpfile.

Referenced by P2Datas.getPlotCommand().

def populate

(

self

)

Trigger the queries filling with data from the database.

When called this function tells to the P2Datas object to get datas from the database and to fill its handled P2Query object.

Definition at line 282 of file p2data.py.

References P2Datas.queries, and P2Datas.sameRange.

def queryToDict (   query,   sep  )

static

Return a dict of "option"=>"value" from a query string.

Parameters

query	The query string
sep	The query's argument separator

Returns

A dict representing each argument as 'option'=>'value'

Definition at line 243 of file p2data.py.

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

• src/p2data.py