Hi, I've implemented the Feature interface, and when I issue a WMS
GetMap, getAttributes(Obejct[]) is called on my Feature....however, I
am getting attribute type exceptions thrown higher up the stack.
Consider this short code snippet from getAttributes(Object[]) ->
note: attributes (below) is a HashMap where the key is the attribute
name and the value is an object drawn straight from the database
// this is what we expect
AttributeType schemaAttribute = featureType.getAttributeType(x);
String schemaName = schemaAttribute.getName();
Class schemaType = schemaAttribute.getType();
// this is what we got
Object o = this.attributes.get(schemaName);
String realType = o.toString();
logger.debug("schemaName: " + schemaName + "schemaType: " + schemaType
+ " realType: " + realType);
When I run this, I see (e.g.):
schemaName: maximumlengthallowed schemaType: class java.lang.Double
realType: class org.geotools.feature.type.NumericAttributeType
It so happens that this attribute value is null in the database so the
value of this attribute is also null. For those attribute values that
are non-null, I don't think an AttributeTypeException gets thrown.
Here are my questions:
1) I'm not sure where org.geotools.feature.type.NumericAttributeType
even comes from. The data structure for the feature's attributes is a
simple hash map of <name, object> -- How did it get cast to
NumericAttributeType?
2) I'm having difficulty figuring out how to properly cast an
attribute value dynamically if that is what I need to do. I can
figure out what the type should be from the FeatureType schema, but
I'm not sure how to cast this dynamically.
Am I doing this all wrong? If there is a better way, I'd love to hear about it.
Best regards,
Davis
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