Property-meaning.xml: a dc tag added in the property-meaning tag.[HTML]...<property-meaning name="customObject" valueType="String" comparisonType="keyword"> <dc name="prime:object" aliases="object,prime:object" /></property-meaning>...[/HTML]com.esri.gpt.control.georss.RestQueryServlet#parseRequest
...
parser.parseRepositoryId("rid");
parser.parseResponseFormat("f");
parser.parseResponseGeometry("geometryType");
parser.parseResponseStyle("style");
parser.parseResponseTarget("target");
parser.parseStartRecord("start", 1);
parser.parseMaxRecords("max", 10);
parser.parsePropertyIsEqualTo("uuid", "uuid");
parser.parsePropertyIsLike("searchText", "anytext");
parser.parsePropertyList("contentType", "dc:type", ",", true);
parser.parsePropertyList("customObject", "prime:object", ",", true);
parser.parsePropertyRange("after", "before", "dct:modified");
parser.parseSpatialClause("bbox", "spatialRel", "geometry");
parser.parseSortables("orderBy");
...
Now it works.