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59 lines
1.5 KiB
59 lines
1.5 KiB
#ifndef __DATASOURCE_CONN_H__
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#define __DATASOURCE_CONN_H__
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#include <limits>
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#include <cstdint>
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struct Context;
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#ifndef __AQQueryResult__
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#define __AQQueryResult__ 1
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struct AQQueryResult {
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void* res;
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unsigned ref;
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};
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#endif
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#ifndef __AQBACKEND_TYPE__
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#define __AQBACKEND_TYPE__ 1
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enum Backend_Type {
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BACKEND_AQuery,
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BACKEND_MonetDB,
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BACKEND_MariaDB,
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BACKEND_DuckDB,
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BACKEND_SQLite,
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BACKEND_TOTAL
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};
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#endif
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struct DataSource {
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void* server = nullptr;
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Context* cxt = nullptr;
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bool status = false;
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char* query = nullptr;
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Backend_Type DataSourceType = BACKEND_AQuery;
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void* res = nullptr;
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void* ret_col = nullptr;
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long long cnt = 0;
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const char* last_error = nullptr;
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void* handle;
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DataSource() = default;
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explicit DataSource(Context* cxt) = delete;
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virtual void connect(Context* cxt) = 0;
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virtual void exec(const char* q) = 0;
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virtual void* getCol(int col_idx, int type) = 0;
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virtual void getDSTable(const char* name, void* tbl) = 0;
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// virtual long long getFirstElement() = 0;
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virtual void close() = 0;
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virtual bool haserror() = 0;
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virtual void print_results(const char* sep = " ", const char* end = "\n",
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uint32_t limit = std::numeric_limits<uint32_t>::max()) {};
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virtual ~DataSource() {};
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};
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// TODO: replace with super class
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//typedef DataSource* (*create_server_t)(Context* cxt);
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typedef void* (*create_server_t)(Context* cxt);
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void* CreateNULLServer(Context*);
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#endif //__DATASOURCE_CONN_H__
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