osgEarth::Features::VirtualFeatureSource Class Reference

Inheritance diagram for osgEarth::Features::VirtualFeatureSource:

Collaboration diagram for osgEarth::Features::VirtualFeatureSource:

List of all members.

Public Member Functions
	VirtualFeatureSource ()
void	add (FeatureSource *source, FeaturePredicate *predicate)
virtual FeatureCursor *	createFeatureCursor (const Query &query)
virtual void	initialize (const std::string &referenceURI)
virtual const FeatureProfile *	createFeatureProfile ()
virtual const FeatureSchema &	getSchema () const
virtual Feature *	getFeature (FeatureID id)
Protected Attributes
FeatureSourceMappingVector	_sources

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Detailed Description

Definition at line 52 of file VirtualFeatureSource.

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Constructor & Destructor Documentation

osgEarth::Features::VirtualFeatureSource::VirtualFeatureSource

(

)

[inline]

Construct a new virtual feature source

Definition at line 56 of file VirtualFeatureSource.

{ }

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Member Function Documentation

void VirtualFeatureSource::add	(	FeatureSource *	source,
		FeaturePredicate *	predicate
	)

Adds a feature source/predicate mapping. This FeatureSource will draw from "source" and filter based on the predicate.

Definition at line 109 of file VirtualFeatureSource.cpp.

{
    _sources.push_back( FeatureSourceMapping(source, predicate) );
    dirty();
}

FeatureCursor * VirtualFeatureSource::createFeatureCursor

(

const Query &

query

)

[virtual]

Creates a cursor that iterates over all the features corresponding to the specified query.

Caller takes ownership of the returned object.

Implements osgEarth::Features::FeatureSource.

Definition at line 116 of file VirtualFeatureSource.cpp.

{
    return new VirtualFeatureCursor( _sources, query );
}

const FeatureProfile * VirtualFeatureSource::createFeatureProfile

(

)

[virtual]

Creates and returns a metadata structure describing the features in a named feature class. This method is called by the public function getFeatureProfile() in this same object to create the metadata structure.

Implements osgEarth::Features::FeatureSource.

Definition at line 131 of file VirtualFeatureSource.cpp.

{
    if ( _sources.size() > 0 )
        return _sources.front()._source->getFeatureProfile();
    else
        return 0L;
}

virtual Feature* osgEarth::Features::VirtualFeatureSource::getFeature

(

FeatureID

fid

)

[inline, virtual]

Gets the Feature with the given FID

Returns:

The Feature with the given FID or NULL if not found.

Reimplemented from osgEarth::Features::FeatureSource.

Definition at line 69 of file VirtualFeatureSource.

{ return 0L; }

const FeatureSchema & VirtualFeatureSource::getSchema

(

)

const [virtual]

Gets the FeatureSchema for this FeatureSource. If the schema doesn't publish a source, this might be empty.

Reimplemented from osgEarth::Features::FeatureSource.

Definition at line 140 of file VirtualFeatureSource.cpp.

{
  static FeatureSchema s_emptySchema;

  return _sources.size() > 0 ?_sources.front()._source->getSchema() : s_emptySchema;
}

void VirtualFeatureSource::initialize

(

const std::string &

referenceURI

)

[virtual]

Initialize the FeatureSource. The profile should be computed and set here using setProfile()

Implements osgEarth::Features::FeatureSource.

Definition at line 122 of file VirtualFeatureSource.cpp.

{
    for( FeatureSourceMappingVector::iterator i = _sources.begin(); i != _sources.end(); ++i )
    {
        i->_source->initialize( referenceURI );
    }
}

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Member Data Documentation

FeatureSourceMappingVector osgEarth::Features::VirtualFeatureSource::_sources [protected]

Definition at line 72 of file VirtualFeatureSource.

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

• /home/cube/sources/osgearth/src/osgEarthFeatures/VirtualFeatureSource
• /home/cube/sources/osgearth/src/osgEarthFeatures/VirtualFeatureSource.cpp