Geometric functions available in XML syntax will be described bellow.

1 Geometry constructors

1.1 geo.fromText

Returns the specified geometry from the WKT (Well-Known Text) representation.

<geo.fromText>
    <type> *
        <type /> *
    </type>
    <coords> *
        <coords /> *
    </coords>
    <srid> *
        <srid /> *
    </srid>
</geo.fromText>

Arguments
Name	Type	Required	Unique	Nullable	Description
Etype					Geometry Type. Object types POINT, LINESTRING, POLYGON ...
Etype	string
Ecoords					Coordinates of the geometry, separated by ","
Ecoords	string
Esrid					SRID of geometry
Esrid	integer

Example

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<select>
    <columns>
        <geo.fromText type='LINESTRING'>
            <coords>1313 242, 0 0</coords>
            <srid>4326</srid>
        </geo.fromText>,
        <geo.fromText type='POINT'>
            <coords>1 4</coords>
            <srid>4326</srid>
        </geo.fromText>,
    </columns>
    <from table='cdataemp' />
</select>

1.2 geo.point2D

Returns a 2D point from the indicated coordinates (according to the WKT representation).

<geo.point2D>
    <coords> *
        <coords /> *
    </coords>
    <srid> *
        <srid /> *
    </srid>
</geo.point2D>

Arguments
Name	Type	Required	Unique	Nullable	Description
Ecoords					Coordinates of the geometry, separated by ","
Ecoords	string
Esrid					SRID of geometry.
Esrid	integer

Example

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<select>
    <columns>
        <geo.point2D>
           <coords>1313 24245</coords>
           <srid>4326</srid>
        </geo.point2D>
    </columns>
    <from table='cdataemp' />
</select>

1.3 geo.line

Returns a 2D line from the indicated coordinates.

<geo.line>
    <coords> *
        <coords /> *
    </coords>
    <srid> *
        <srid /> *
    </srid>
</geo.line>

Arguments
Name	Type	Required	Unique	Nullable	Description
Ecoords					Coordinates of the geometry, separated by ","
Ecoords	string
Esrid					SRID of geometry
Esrid	integer

Example

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<select>
    <columns>
        <geo.line>
           <coords>391 294, 2489 242,42345  4543, 35 454 </coords>
           <srid>4326</srid>
        </geo.line>
    </columns>
    <from table='dual' />
</select>

1.4 geo.polygon

Returns a polygon from the indicated coordinates.

<geo.polygon>
    <coords> *
        <coords /> *
    </coords>
    <srid> *
        <srid /> *
    </srid>
</geo.polygon>

Arguments
Name	Type	Required	Unique	Nullable	Description
Ecoords					Coordinates of the geometry, separated by ","
Ecoords	string
Esrid					SRID of geometry
Esrid	integer

Example

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<select>
    <columns>
        <geo.polygon>
           <coords>0 0,0 1,1 1,1 0,0 0</coords>
           <srid>4326</srid>
        </geo.polygon>
    </columns>
    <from table='dual' />
</select>