sql-generic-internal.h

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/*
 * JULEA - Flexible storage framework
 * Copyright (C) 2022 Timm Leon Erxleben
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef JULEA_DB_UTIL_SQL_GENERIC_INTERNAL_H
#define JULEA_DB_UTIL_SQL_GENERIC_INTERNAL_H
 
#include <glib.h>
 
#include <db-util/sql-generic.h>
#include <db-util/jbson.h>
 
#define BACKEND_ID_TYPE J_DB_TYPE_UINT64
 
struct JThreadVariables
{
    gpointer db_connection;
 
    GHashTable* query_cache;
 
    GHashTable* schema_cache;
};
 
typedef struct JThreadVariables JThreadVariables;
 
struct JSqlBatch
{
    const gchar* namespace;
 
    JSemantics* semantics;
 
    gboolean open;
 
    gboolean aborted;
};
 
typedef struct JSqlBatch JSqlBatch;
 
struct JSqlStatement
{
    gpointer stmt;
 
    GHashTable* out_variables_index;
 
    GHashTable* variable_types;
};
 
typedef struct JSqlStatement JSqlStatement;
 
// common
 
extern GPrivate thread_variables_global;
 
extern JSQLSpecifics* specs;
 
G_LOCK_EXTERN(sql_backend_lock);
 
void thread_variables_fini(void* ptr);
 
JThreadVariables* thread_variables_get(gpointer backend_data, GError** error);
 
JSqlStatement* j_sql_statement_new(gchar const* query, GArray* types_in, GArray* types_out, GHashTable* out_variables_index, GHashTable* variable_types, GError** error);
 
void j_sql_statement_free(JSqlStatement* ptr);
 
GString* j_sql_get_full_field_name(const gchar* namespace, const gchar* table, const gchar* field);
 
// DQL
 
gboolean _backend_schema_get(gpointer backend_data, gchar const* namespace, gchar const* name, bson_t* schema, GError** error);
 
GHashTable* get_schema(gpointer backend_data, gchar const* namespace, gchar const* name, GError** error);
 
gboolean build_query_condition_part(gpointer backend_data, JSqlBatch* batch, bson_iter_t* iter, GString* sql, JDBSelectorMode mode, GArray* arr_types_in, GHashTable* schema, GError** error);
 
gboolean bind_selector_query(gpointer backend_data, const gchar* namespace, bson_iter_t* iter, JSqlStatement* statement, GHashTable* schema, GError** error);
 
gboolean _backend_query_ids(gpointer backend_data, gpointer _batch, gchar const* name, bson_t const* selector, GArray** matches, GError** error);
 
// TCL
 
gboolean _backend_batch_start(gpointer backend_data, JSqlBatch* batch, GError** error);
 
gboolean _backend_batch_execute(gpointer backend_data, JSqlBatch* batch, GError** error);
 
gboolean _backend_batch_abort(gpointer backend_data, JSqlBatch* batch, GError** error);
 
#endif