FdoByteArray* SpatialContextTest::SerializeExtent( double minX, double minY, double maxX, double maxY )
{
// Create a byte array
FdoPtr<FdoFgfGeometryFactory> gf = FdoFgfGeometryFactory::GetInstance();
FdoPtr<FdoIEnvelope> env = gf->CreateEnvelopeXY(minX, minY, maxX, maxY );
FdoPtr<FdoIGeometry> geom = gf->CreateGeometry(env);
return( gf->GetFgf(geom) );
}
bool FdoXmlSpatialContextReader::ReadNext()
{
FdoXmlSaxContextP context = FdoXmlSaxContext::Create( mXmlReader );
// Clear out extents for previously read spatial context
mExtent = NULL;
// Re-initialze the read handler so the next spatial context can be read.
mSCHandler->Setup( mXmlFlags );
// Read the next spatial context from XML.
mXmlReader->Parse( this, context, true );
context->ThrowErrors();
if ( mSCHandler->mSCName.GetLength() > 0 ) {
// A spatial context was found. Convert extents to byte array.
FdoPtr<FdoFgfGeometryFactory> gf = FdoFgfGeometryFactory::GetInstance();
FdoPtr<FdoIEnvelope> env = gf->CreateEnvelopeXY(
mSCHandler->mMinX,
mSCHandler->mMinY,
mSCHandler->mMaxX,
mSCHandler->mMaxY
);
FdoPtr<FdoIGeometry> geom = gf->CreateGeometry(env);
mExtent = gf->GetFgf(geom);
mSCHandler->mFirst = false;
return true;
}
else {
// No spatial context found. We're done reading.
return false;
}
}