Support in HstQuery API to easily query for sub types of multiple bean types or primary node types

HstQuery interface allows for queries for certain node types and its subtypes yes/no. Or for a list of names types. If you want to combine type A and its subtypes plus type B (no subtype of A), then you have to create your own list of type A. A HstFilterUtils could help building this list. It could contain the following code.

NodeTypeManager ntMgr = session.getWorkspace().getNodeTypeManager();
NodeTypeIterator allTypes = ntMgr.getAllNodeTypes();
while (allTypes.hasNext()) {
NodeType nt = allTypes.nextNodeType();
if (nt.isNodeType("myproject:base"))

{ Filter orFilter = query.createFilter() orFilter.addEqualTo("jcr:primaryType",nt.getName()) }

}
Filter orFilter = query.createFilter()
orFilter.addEqualTo("jcr:primaryType", "hippostd:gallery);