Top Engine Code

#include "rdf_index.h"


namespace rdf {

//	literal const literal::_NO_VALUE_ = literal();
	
namespace internal {


	index_graph_iterator index_graph::find(index_type  u, index_type  v) const
	{
		typedef itor_map<u_map_type> 			U;
		typedef itor_map<v_map_type> 			V;
		typedef w_itor_set						W;
		typedef index_graph_iterator 	iterator;
		
		u_const_itor_type utor = m_index.find(u);
		if(utor == m_index.end()) {
			return iterator(U(0, m_index.end(), m_index.end()), 
					V(0, m_v_end, m_v_end), 
					W(m_w_end, m_w_end));
		}
		
		v_const_itor_type vtor = utor->second.find(v);
		if(vtor == utor->second.end()) {
			return iterator(U(0, m_index.end(), m_index.end()), 
					V(0, m_v_end, m_v_end), 
					W(m_w_end, m_w_end));
		}
		
		return iterator(U(u, m_index.end(), m_index.end()), 
				V(v, m_v_end, m_v_end), W(vtor->second.begin(), vtor->second.end()));
	};

	
	index_graph_iterator index_graph::find(index_type  u) const
	{
		typedef itor_map<u_map_type> 			U;
		typedef itor_map<v_map_type> 			V;
		typedef w_itor_set						W;
		typedef index_graph_iterator 	iterator;
		
		u_const_itor_type utor = m_index.find(u);
		if(utor == m_index.end()) {
			return iterator(
				U(0, m_index.end(), m_index.end()), 
				V(0, m_v_end, m_v_end), 
				W(m_w_end, m_w_end));
		}
		
		v_const_itor_type vtor_begin = utor->second.begin();
		v_const_itor_type vtor_end   = utor->second.end();
		if(vtor_begin == vtor_end) {
			return iterator(
				U(0, m_index.end(), m_index.end()), 
				V(0, vtor_end, vtor_end), 
				W(m_w_end, m_w_end));
		}
				
		return iterator(
				U(u, m_index.end(), m_index.end()), 
				V(0, vtor_begin, vtor_end), 
				W(vtor_begin->second.begin(), vtor_begin->second.end()));
	};

	
	index_graph_iterator index_graph::find() const
	{
		typedef itor_map<u_map_type> 			U;
		typedef itor_map<v_map_type> 			V;
		typedef w_itor_set						W;
		typedef index_graph_iterator 	iterator;
		
		u_const_itor_type utor_begin = m_index.begin();
		u_const_itor_type utor_end   = m_index.end();
		if(utor_begin == utor_end) {
			return iterator(
				U(0, utor_end, utor_end), 
				V(0, m_v_end, m_v_end), 
				W(m_w_end, m_w_end));
		}
		
		v_const_itor_type vtor_begin = utor_begin->second.begin();
		v_const_itor_type vtor_end   = utor_begin->second.end();
		if(vtor_begin == vtor_end) {
			return iterator(
				U(0, utor_end, utor_end), 
				V(0, vtor_end, vtor_end), 
				W(m_w_end, m_w_end));
		}
		
		return iterator(
				U(0, utor_begin, utor_end), 
				V(0, vtor_begin, vtor_end), 
				W(vtor_begin->second.begin(), vtor_begin->second.end()));
	};

};	/* internal namespace */
};	/* rdf namespace */