private static Triple triple(NodeTable nodeTable, NodeId s, NodeId p, NodeId o) { if ( ! NodeId.isConcrete(s) ) throw new InternalErrorException("Invalid id for subject: "+fmt(s,p,o)) ; if ( ! NodeId.isConcrete(p) ) throw new InternalErrorException("Invalid id for predicate: "+fmt(s,p,o)) ; if ( ! NodeId.isConcrete(o) ) throw new InternalErrorException("Invalid id for object: "+fmt(s,p,o)) ; Node sNode = nodeTable.getNodeForNodeId(s) ; if ( sNode == null ) throw new InternalErrorException("Invalid id node for subject (null node): "+fmt(s,p,o)) ; Node pNode = nodeTable.getNodeForNodeId(p) ; if ( pNode == null ) throw new InternalErrorException("Invalid id node for predicate (null node): "+fmt(s,p,o)) ; Node oNode = nodeTable.getNodeForNodeId(o) ; if ( oNode == null ) throw new InternalErrorException("Invalid id node for object (null node): "+fmt(s,p,o)) ; return new Triple(sNode, pNode, oNode) ; }