unfinished work

src/maat_virtual.cpp

@@ -0,0 +1,59 @@
+/*
+**********************************************************************************************
+*	File: maat_virtual.cpp
+*   Description: 
+*	Authors: Liu WenTan <liuwentan@geedgenetworks.com>
+*	Date:    2022-10-31
+*   Copyright: (c) 2018-2022 Geedge Networks, Inc. All rights reserved.
+***********************************************************************************************
+*/
+
+#include "cJSON/cJSON.h"
+#include "maat_kv.h"
+#include "utils.h"
+#include "maat_utils.h"
+#include "log/log.h"
+#include "maat_virtual.h"
+
+#define MODULE_VIRTUAL	 module_name_str("maat.virtual")
+
+struct virtual_schema {
+	int physical_table_id[SCAN_TYPE_MAX];
+};
+
+void *virtual_schema_new(cJSON *json, const char *table_name, struct log_handle *logger)
+{
+    size_t read_cnt = 0;
+
+    cJSON *item = cJSON_GetObjectItem(json, "physical_table");
+    if (NULL == item || item->type != cJSON_Array) {
+        log_error(logger, MODULE_VIRTUAL, "virtual table %s has no physical_table column", table_name);
+        return NULL;
+    }
+    read_cnt++;
+#if 0
+    struct virtual_schema *vt_schema = ALLOC(struct virtual_schema, 1);
+    int cnt = cJSON_GetArraySize(item);
+    for (int i = 0; i < cnt; i++) {
+        cJSON *tmp_item = cJSON_GetArrayItem(item, i);
+        if (tmp_item != NULL && tmp_item->type == cJSON_String) {
+            int table_id = -1;
+            /* physical table should already exist */
+            int ret = maat_kv_read(tablename2id_map, tmp_item->valuestring, &table_id);
+			if (ret < 0) {
+				return -1;		
+			}
+
+            enum scan_type table_scan_type = table_schema_get_scan_type(table_array[table_id]);
+            vt_schema->physical_table_id[table_scan_type]= table_id;
+        }
+    }
+
+    if (read_cnt < 3) {
+        FREE(vt_schema);
+        return NULL;
+    }
+
+    return vt_schema;
+#endif
+}