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#ifndef SG_SG_H_
#define SG_SG_H_
typedef long long int SgId;
#include <gu/exn.h>
#include <pgf/pgf.h>
typedef struct SgSG SgSG;
SgSG*
sg_open(const char *filename, GuExn* err);
void
sg_close(SgSG *sg, GuExn* err);
void
sg_begin_trans(SgSG* sg, GuExn* err);
void
sg_commit(SgSG* sg, GuExn* err);
void
sg_rollback(SgSG* sg, GuExn* err);
SgId
sg_insert_expr(SgSG *sg, PgfExpr expr, int wrFlag, GuExn* err);
PgfExpr
sg_get_expr(SgSG *sg, SgId key, GuPool* out_pool, GuExn* err);
typedef struct SgQueryExprResult SgQueryExprResult;
SgQueryExprResult*
sg_query_expr(SgSG *sg, PgfExpr expr, GuPool* pool, GuExn* err);
PgfExpr
sg_query_next(SgSG *sg, SgQueryExprResult* ctxt, SgId* pKey, GuPool* pool, GuExn* err);
void
sg_query_close(SgSG* sg, SgQueryExprResult* ctxt, GuExn* err);
void
sg_update_fts_index(SgSG* sg, PgfPGF* pgf, GuExn* err);
GuSeq*
sg_query_linearization(SgSG *sg, GuString tok, GuPool* pool, GuExn* err);
typedef PgfExpr SgTriple[3];
SgId
sg_insert_triple(SgSG *sg, SgTriple triple, GuExn* err);
int
sg_get_triple(SgSG *sg, SgId key, SgTriple triple,
GuPool* out_pool, GuExn* err);
typedef struct SgTripleResult SgTripleResult;
SgTripleResult*
sg_query_triple(SgSG *sg, SgTriple triple, GuExn* err);
int
sg_triple_result_fetch(SgTripleResult* tres, SgId* pKey, SgTriple triple,
GuPool* out_pool, GuExn* err);
void
sg_triple_result_get_query(SgTripleResult* tres, SgTriple triple);
void
sg_triple_result_close(SgTripleResult* tres, GuExn* err);
typedef struct SgQueryResult SgQueryResult;
SgQueryResult*
sg_query(SgSG *sg, size_t n_triples, SgTriple* triples, GuExn* err);
size_t
sg_query_result_columns(SgQueryResult* qres);
int
sg_query_result_fetch_columns(SgQueryResult* qres, PgfExpr* res,
GuPool* out_pool, GuExn* err);
PgfExpr
sg_query_result_fetch_expr(SgQueryResult* qres, PgfExpr expr,
GuPool* out_pool, GuExn* err);
void
sg_query_result_close(SgQueryResult* qres, GuExn* err);
#endif
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