46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef LINUX
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#include <unistd.h>
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#endif
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#ifdef WINDOWS
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#include <windows.h>
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#endif
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#include "taosudf.h"
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DLL_EXPORT int32_t udf1_init() { return 0; }
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DLL_EXPORT int32_t udf1_destroy() { return 0; }
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DLL_EXPORT int32_t udf1(SUdfDataBlock *block, SUdfColumn *resultCol) {
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SUdfColumnMeta *meta = &resultCol->colMeta;
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meta->bytes = 4;
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meta->type = TSDB_DATA_TYPE_INT;
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meta->scale = 0;
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meta->precision = 0;
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SUdfColumnData *resultData = &resultCol->colData;
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resultData->numOfRows = block->numOfRows;
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for (int32_t i = 0; i < resultData->numOfRows; ++i) {
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int j = 0;
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for (; j < block->numOfCols; ++j) {
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if (udfColDataIsNull(block->udfCols[j], i)) {
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udfColDataSetNull(resultCol, i);
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break;
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}
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}
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if (j == block->numOfCols) {
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int32_t luckyNum = 88;
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udfColDataSet(resultCol, i, (char *)&luckyNum, false);
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}
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}
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// to simulate actual processing delay by udf
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#ifdef LINUX
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usleep(1 * 1000); // usleep takes sleep time in us (1 millionth of a second)
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#endif
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#ifdef WINDOWS
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Sleep(1);
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#endif
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return 0;
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} |