Package gavo :: Package svcs :: Module pql :: Class PQLPositionPar

Class PQLPositionPar

object --+    
         |    
    PQLPar --+
             |
            PQLPositionPar

a PQL position parameter, as for SSA.

Cones and intervals or real lists do not mix; we support STC-S identifiers as qualifiers.

The literals here are basically two-float lists.

Nested Classes
	valParser float(x) -> floating point number
Inherited from `PQLPar`: `rangeClass`

Instance Methods

getSQL(self, colName, sqlPars)
returns an SQL condition expressing this PQL constraint for colName.

source code

getConeSQL(self, colName, sqlPars, coneSize)

source code

covers(self, value)
returns true if value is within the ranges specified by the PQL expression.

source code

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

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

Class Methods

fromLiteral(cls, val, destName)
returns a parsed representation of a literal in PQL range-list syntax.

source code

Static Methods
Inherited from `PQLPar`: `stepParser`

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

Properties
Inherited from `object`: `__class__`

Method Details

fromLiteral(cls, val, destName)
Class Method

source code

returns a parsed representation of a literal in PQL range-list syntax.

val is a string containing the PQL expression, destName is a name to be used for the LiteralParseErrors the function raises when there are syntax errors in val.

Overrides: PQLPar.fromLiteral: (inherited documentation)

getSQL(self, colName, sqlPars)

source code

returns an SQL condition expressing this PQL constraint for colName.

The parameters necessary are added to sqlPars.

cmpExpr can be used to override the cmpExpr argument to PQLRange.getSQL; this is not really intended for user code, though, but rather for subclasses of PQLPar

Overrides: PQLPar.getSQL: (inherited documentation)

covers(self, value)

source code

returns true if value is within the ranges specified by the PQL expression.

value must be type-true, i.e., you are responsible for converting it into the type the range are in.

Overrides: PQLPar.covers: (inherited documentation)

Class PQLPositionPar

fromLiteral(cls, val, destName) Class Method

getSQL(self, colName, sqlPars)

covers(self, value)

fromLiteral(cls, val, destName)
Class Method