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#include <lib/stringinfo.h>
/*
* Callbacks that to argument name/type/value lookups.
*/
struct QueryBuilderOps {
/* returns name index or < 0 if unknown. str is not null-terminated */
int (*name_lookup)(void *arg, const char *str, int len);
/* returns type oid for nr that .name_lookup returned */
Oid (*type_lookup)(void *arg, int nr);
/* returns value for nr that .name_lookup returned */
Datum (*value_lookup)(void *arg, int nr, bool *isnull);
};
/*
* Parsed query
*/
struct QueryBuilder {
StringInfoData sql;
bool stdstr;
const struct QueryBuilderOps *op;
void *plan;
int nargs;
int maxargs;
int *arg_map;
};
struct QueryBuilder *qb_create(const struct QueryBuilderOps *ops, MemoryContext ctx);
void qb_add_raw(struct QueryBuilder *q, const char *str, int len);
void qb_add_parse(struct QueryBuilder *q, const char *str, void *arg);
void qb_free(struct QueryBuilder *q);
void qb_prepare(struct QueryBuilder *q, void *arg);
int qb_execute(struct QueryBuilder *q, void *arg);
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