source: cows/trunk/cows/service/wfs_iface.py @ 4311

"""
The classes in this module define an interface between the OWS Pylons
server and components that provide Web Feature Server layers. They extend the interfaces
defined in wxs_iface.py.


"""

from wxs_iface import ILayer

        

class IwfsLayer(ILayer):
    """
    An interface representing a WFS FeatureType, based on ILayer.
    @ivar keywords: describing this feature type.
    @ivar outputformats: list of output formats available for this feature type.
    """
    keywords=outputformats=NotImplemented

class IFeatureSet(object):
    """ A set of features available via a WFS. Supports querying methods as used by OGG filters 
    @ivar featureinstances: feature instances available in this feature set"""

    def getFeatureByGMLid(self, gmlid):
        """ return a feature specified by gmlid 
        @return: zero or one IFeatureInstance
        """
        raise NotImplementedError
    
    def getFeaturesByBBox(self,bboxtuple, srsname):
        """ return features within a bbox (llx, lly, urx, ury) in a particular srs
        @return: zero or more IFeatureInstance 
        """
        raise NotImplementedError

    
    def getFeaturesByTemporalRange(self, range):
        """ return features within a temporal range (minT, maxT) in form YYYY-MM-DDT00:00:00.0
        @return: zero or more IFeatureInstance 
        """
        raise NotImplementedError    
    
        
class IFeatureInstance(object):
    """     An interface representing a feature (as defined in a GML application schema)
    @ivar title: title of feature instance
    @ivar abstract: abstract of feature instance 
    @ivar feature: feature instance 
    """ 
    
    type=title=abstract=NotImplemented
    
    def toGML(self):
        """ return a GML representation of the feature as a string 
        @return: string of GML
        """
        raise NotImplementedError