Hi all,
I'm trying to use the encodeIfEmpty element to encode an empty element when the
value in the underlying database is null, e.g.
.
.
<AttributeMapping>
<targetAttribute>positionalAccuracy</targetAttribute>
<sourceExpression><OCQL>POSITIONALACCURACY</OCQL></sourceExpression>
<encodeIfEmpty>true</encodeIfEmpty>
</AttributeMapping>
.
.
I need the output element to be of the form <gsmlp:positionalAccuracy/> for
null values, although the element is being skipped, i.e. it doesn't appear at
all, and the resulting feature XML is invalid against the application schema.
Has anyone gotten this to work, or am I misunderstanding the documentation -
"The encodeIfEmpty element will determine if an attribute will be encoded if it
contains a null or empty value."?
I've found work arounds using filter expressions, e.g.
<sourceExpression><OCQL>if_then_else(isNull(PARENTBOREHOLE_URI),
'',PARENTBOREHOLE_URI)</OCQL></sourceExpression>, although the element becomes
non-queryable.
I'm using GeoServer 2.9.0 with the 2.9.0 app schema plugin, and have tested
against Oracle and PostgreSQL databases.
Regards,
Aaron.
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