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34 lines
1.4 KiB
SQL
34 lines
1.4 KiB
SQL
set client_min_messages to WARNING;
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SELECT topology.CreateTopology('schema_topo') > 0;
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select topology.AddEdge('schema_topo',ST_GeomFromText('LINESTRING(1 4, 4 7)')) = 1;
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select topology.AddEdge('schema_topo',ST_GeomFromText('LINESTRING(4 7, 6 9)')) = 2;
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select topology.AddEdge('schema_topo',ST_GeomFromText('LINESTRING(2 2, 4 4)')) = 3;
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select topology.AddEdge('schema_topo',ST_GeomFromText('LINESTRING(4 4, 5 5, 6 6)')) = 4;
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select topology.AddEdge('schema_topo',ST_GeomFromText('LINESTRING(6 6, 6 9)')) = 5;
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-- ask for a Point with tolerance zero
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select topology.GetEdgeByPoint('schema_topo',ST_GeomFromText('POINT(5 5)'), 0::float8)::int = 4;
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-- ask for a point on an edge
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select topology.GetEdgeByPoint('schema_topo',ST_GeomFromText('POINT(5 5)'), 0.1::float8)::int = 4;
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-- Ask for a point outside from an edge with a tolerance sufficient to include one edge
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select topology.GetEdgeByPoint('schema_topo',ST_GeomFromText('POINT(5 5.5)'), 0.7::float8)::int = 4;
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-- Ask for a point where there isn't an edge
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select topology.GetEdgeByPoint('schema_topo',ST_GeomFromText('POINT(5 5.5)'), 0::float8) = 0;
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-- Failing cases (should all raise exceptions) -------
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-- Ask for Point in a Node
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select topology.GetEdgeByPoint('schema_topo',ST_GeomFromText('POINT(4 7)'), 1::float8);
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-- Ask for a Point with a tollerance too high
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select topology.GetEdgeByPoint('schema_topo',ST_GeomFromText('POINT(5 5)'), 2::float8);
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SELECT topology.DropTopology('schema_topo');
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