Package gavo :: Package svcs :: Module pql :: Class PQLDatePar

Class PQLDatePar

object --+    
         |    
    PQLPar --+
             |
            PQLDatePar

a PQL parameter containing a date.

steps in ranges are allowed.

There's an additional complication here: in the database, dates can be represented in various forms. To save the day, getSQL takes an additional optional parameter and transfroms the input values as appropriate before passing them to the database.

Nested Classes
Inherited from `PQLPar`: `rangeClass`

Instance Methods

getSQL(self, colName, sqlPars, convert=None)
returns an SQL condition expressing the PQL constraint for colName.

source code

Inherited from PQLPar: __eq__, __init__, __repr__, __str__, covers, getValuesAsSet

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__

Class Methods
Inherited from `PQLPar`: `fromLiteral`

Static Methods

valParser(literal)
str(object='') -> string

source code

stepParser(val)

source code

Class Variables
	nullvalue = `''` hash(x)

Properties
Inherited from `object`: `__class__`

Method Details

valParser(literal)
Static Method

source code

str(object='') -> string

Return a nice string representation of the object. If the argument is a string, the return value is the same object.

Overrides: valParser: (inherited documentation)

stepParser(val)
Static Method

source code

Overrides: PQLPar.stepParser

getSQL(self, colName, sqlPars, convert=None)

source code

returns an SQL condition expressing the PQL constraint for colName.

In addition to the usual parameters, we here accept an additonal argument convert with possible values None (meaning timestamp, which is the default) mjd, jd, and jy, which represents how the datetimes are represented in the database.

Overrides: PQLPar.getSQL

Class PQLDatePar

valParser(literal) Static Method

stepParser(val) Static Method

getSQL(self, colName, sqlPars, convert=None)

valParser(literal)
Static Method

stepParser(val)
Static Method