Justin Deoliveira ha scritto:
> Can you be more specific about what exactly kind of api has to change? I
> think any additions are fine sicne I can't really see those interfaces
> being implemented by client code. But any other changes would seem
> strange after 2.6.0 has already been released.
It boils down to three changes:
- an override of the getGeometryPropertyName() in the GeoTools
Symbolizer interface that explains it is actually a shortcut
for the more general getGeometry() method (so, the override
is there just for javadoc sake)
- the setGeometryPropertyName() that was defined in all sub-interfaces
of gt2 Symbolizer was pushed up to Symbolizer
- two new methods, getGeometry() and setGeometry() have been added
to allow dealing with a generic Expression instead of a String:
Index:
modules/library/api/src/main/java/org/geotools/styling/Symbolizer.java
===================================================================
---
modules/library/api/src/main/java/org/geotools/styling/Symbolizer.java
(revisione 34254)
+++
modules/library/api/src/main/java/org/geotools/styling/Symbolizer.java
(copia locale)
@@ -20,8 +20,11 @@
import javax.measure.quantity.Length;
import javax.measure.unit.Unit;
+import org.opengis.filter.expression.Expression;
+import org.opengis.filter.expression.PropertyName;
+
/**
* This is the parent interface of all Symbolizers.
*
@@ -103,4 +106,42 @@
*/
void setName( String name );
+ /**
+ * A shortcut to get the geometry property name in the case the
geometry
+ * expression is a PropertyName. In case the geometry expression is
null,
+ * and in the case the geometry expression is not a PropertyName, this
+ * method will return null.
+ */
+ String getGeometryPropertyName();
+
+ /**
+ * A shortcut to define the geometry expression as a {...@link
PropertyName}
+ * Typically, features only have one geometry so, in general, the
need to
+ * select one is not required. Note: this moves a little away from
the SLD
+ * spec which provides an XPath reference to a Geometry object, but
does
+ * follow it in spirit.
+ */
+ void setGeometryPropertyName(String geometryPropertyName);
+
+ /**
+ * This defines the geometry to be used for styling.<br>
+ * The property is optional and if it is absent (null) then the
"default"
+ * geometry property of the feature should be used.<br>
+ * Typically, features only have one geometry so, in general, the
need to
+ * select one is not required.<br>
+ * The expression can also build a new geometry out of existing
attributes
+ * or transform an existing geometry. For geometry transformations that
+ * do change the geometry locations or that make up geometries out of
+ * non geometric attributes it is advised that the Expression
implements
+ * the SpatialTransformationFunction interface
+ */
+ Expression getGeometry();
+
+ /**
+ * Sets the expression used for styling. See {...@link #getGeometry()}
for further
+ * details.
+ * @param geometry
+ */
+ void setGeometry(Expression geometry);
+
}
Hope this helps
Cheers
Andrea
--
Andrea Aime
OpenGeo - http://opengeo.org
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