unfinished work

src/inc_internal/maat_expr.h

@@ -0,0 +1,54 @@
+/*
+**********************************************************************************************
+*	File: maat_expr.h
+*   Description: 
+*	Authors: Liu WenTan <liuwentan@geedgenetworks.com>
+*	Date:    2022-10-31
+*   Copyright: (c) 2018-2022 Geedge Networks, Inc. All rights reserved.
+***********************************************************************************************
+*/
+
+#ifndef _MAAT_EXPR_H_
+#define _MAAT_EXPR_H_
+
+#ifdef __cpluscplus
+extern "C"
+{
+#endif
+
+#include "log/log.h"
+#include "cJSON/cJSON.h"
+
+struct expr_runtime;
+
+void *expr_schema_new(cJSON *json, const char *table_name, struct log_handle *logger);
+void expr_schema_free(void *expr_schema);
+
+/* expr runtime API */
+void *expr_runtime_new(void *expr_schema, struct maat_garbage_bin *garbage_bin, struct log_handle *logger);
+void expr_runtime_free(void *expr_runtime);
+
+int expr_runtime_updating_flag(struct expr_runtime *expr_rt);
+int expr_runtime_update(void *expr_runtime, void *expr_schema, const char *line, int valid_column);
+int expr_runtime_commit(void *expr_runtime);
+
+/* expr runtime scan API */
+/**
+ * @brief scan string to get hit group_ids
+ * 
+ * @retval the num of hit group_id
+*/
+int expr_runtime_scan_string(struct expr_runtime *expr_rt, int thread_id, 
+                             const char *data, size_t data_len, int group_ids[], 
+                             size_t max_hit_num, int virtual_table_id, 
+                             struct maat_state *state);
+
+void expr_runtime_stream_open(struct expr_runtime *expr_rt, int thread_id);
+int expr_runtime_scan_stream(struct expr_runtime *expr_rt, const char *data, size_t data_len, int results[], size_t *n_result);
+void expr_runtime_stream_close(struct expr_runtime *expr_rt);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif