private void appendKey(final XMLStreamWriter writer, final EdmEntityType entityType)
throws XMLStreamException {
List<EdmKeyPropertyRef> keyPropertyRefs = entityType.getKeyPropertyRefs();
if (keyPropertyRefs != null && !keyPropertyRefs.isEmpty()) {
// Resolve Base Type key as it is shown in derived type
EdmEntityType baseType = entityType.getBaseType();
if (baseType != null
&& baseType.getKeyPropertyRefs() != null
&& !(baseType.getKeyPropertyRefs().isEmpty())) {
return;
}
writer.writeStartElement(XML_KEY);
for (EdmKeyPropertyRef keyRef : keyPropertyRefs) {
writer.writeEmptyElement(XML_PROPERTY_REF);
writer.writeAttribute(XML_NAME, keyRef.getName());
if (keyRef.getAlias() != null) {
writer.writeAttribute(XML_ALIAS, keyRef.getAlias());
}
}
writer.writeEndElement();
}
}
