Package intermine :: Module constraints :: Class BinaryConstraint

Class BinaryConstraint

              object --+            
                       |            
pathfeatures.PathFeature --+        
                           |        
                  Constraint --+    
                               |    
                  object --+   |    
                           |   |    
                   LogicNode --+    
                               |    
                 CodedConstraint --+
                                   |
                                  BinaryConstraint

Known Subclasses:

Constraints which have an operator and a value

These constraints assert a relationship between the value represented by the path (it must be a representation of a value, ie an Attribute) and another value - ie. the operator takes two parameters.

In all case the 'left' side of the relationship is the path, and the 'right' side is the supplied value.

Valid operators are:

= (equal to)
!= (not equal to)
< (less than)
> (greater than)
<= (less than or equal to)
>= (greater than or equal to)
LIKE (same as equal to, but with implied wildcards)
CONTAINS (same as equal to, but with implied wildcards)
NOT LIKE (same as not equal to, but with implied wildcards)

Instance Methods

[hide private]

__init__(self, path, op, value, code='A') source code

to_string(self)
Provide a human readable representation of the logic.

source code

to_dict(self)
Return a dict object which can be used to construct a DOM element with the appropriate attributes.

source code

Inherited from CodedConstraint: __str__

Inherited from pathfeatures.PathFeature: __repr__

Inherited from LogicNode: __add__, __and__, __or__

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

Class Variables

[hide private]

OPS = set(['!=', '<', '<=', '=', '>', '>=', 'CONTAINS', 'LIKE'...

Inherited from Constraint: child_type

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, path, op, value, code=`'A'`)
(Constructor)

source code

Constructor

Parameters:

path (string) - The path to constrain
op (string) - The relationship between the value represented by the path and the value provided (must be a valid operator)
value (string or number) - The value to compare the stored value to
code (string) - The code for this constraint (default = "A")

Overrides: object.__init__

to_string(self)

source code

Provide a human readable representation of the logic. This method is called by repr.

Overrides: pathfeatures.PathFeature.to_string

to_dict(self)

source code

Return a dict object which can be used to construct a DOM element with the appropriate attributes.

Overrides: pathfeatures.PathFeature.to_dict

Class Variable Details

[hide private]

OPS

Value:

set(['!=', '<', '<=', '=', '>', '>=', 'CONTAINS', 'LIKE', 'NOT LIKE'])

Class BinaryConstraint

Constraints which have an operator and a value

__init__(self, path, op, value, code='A') (Constructor)

Constructor

to_string(self)

to_dict(self)

OPS

init(self, path, op, value, code=`'A'`)
(Constructor)