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ShapeToSQL

ShapeToSQLÀº ¸ð¾ç Ç¥Çö½ÄÀÌ ºÎ¿©µÈ db2gse.ST_Geometry °ªÀ» ±¸¼ºÇÕ´Ï´Ù. SRID °ªÀ¸·Î 0ÀÌ ÀÚµ¿À¸·Î »ç¿ëµË´Ï´Ù.

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db2gse.ShapeToSQL(ShapeGeometry blob(1M))

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db2gse.ST_Geometry

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´ÙÀ½ÀÇ C ÄÚµå Á¶°¢¿¡´Â LOTS Å×ÀÌºí¿¡ µ¥ÀÌÅ͸¦ »ðÀÔÇÏ´Â Spatial Extender SQL ÇÔ¼ö¿Í ÇÔ²² »ðÀÔµÈ ODBC ÇÔ¼ö°¡ µé¾î ÀÖ½À´Ï´Ù. LOTS Å×À̺íÀº °¢ ±¸È¹À» °íÀ¯ÇÏ°Ô ½Äº°ÇÏ´Â lot_id Ä÷³°ú, °¢ ±¸È¹ÀÇ ±âÇϰ¡ Æ÷ÇÔµÈ ±¸È¹ ´Ù°¢Çü Ä÷³À¸·Î ÀÛ¼ºµÇ¾ú½À´Ï´Ù.

CREATE TABLE lots (lot_id  integer,
                   lot     db2gse.ST_MultiPolygon);

ShapeToSQL ÇÔ¼ö´Â ¸ð¾çÀ» Spatial Extender ±âÇÏÇÐÀ¸·Î º¯È¯ÇÕ´Ï´Ù. Àüü INSERT¹®ÀÌ shp_sql·Î º¹»çµË´Ï´Ù. INSERT¹®¿¡´Â LOT_id ¹× ±¸È¹ µ¥ÀÌÅ͸¦ µ¿ÀûÀ¸·Î ½ÂÀÎÇϱâ À§ÇÑ ¸Å°³º¯¼ö Ç¥½Ã¹®ÀÚ°¡ Æ÷ÇԵ˴ϴÙ.

/* ±¸È¹ ID ¹× ±¸È¹ ´Ù°¢ÇüÀ» »óÁÖ½Ã۱â À§ÇÑ SQL insert¹®À»
   ÀÛ¼ºÇÕ´Ï´Ù. ¹°À½Ç¥´Â ¸Å°³º¯¼ö Ç¥½Ã¹®ÀÚÀ̸ç,
   ·±Å¸ÀÓ¿¡¼­ °Ë»öµÇ´Â lot °ª ¹× lot_id¸¦
   ÁöÁ¤ÇÕ´Ï´Ù. */
strcpy (shp_sql,"insert into lots (lot_id, lot) values(?, 
db2gse.ShapeToSQL(cast(? as blob(1m))))");
/* SQL¹® Çڵ鿡 ´ëÇÑ ¸Þ¸ð¸®¸¦ ÇÒ´çÇϰí, ¸í·É¹® ÇÚµéÀ»
   ¿¬°á ÇÚµé°ú °áÇÕÇÕ´Ï´Ù. */
rc = SQLAllocStmt (handle, &hstmt);
/* ½ÇÇàÇÒ SQL¹®À» ÁغñÇÕ´Ï´Ù. */
rc = SQLPrepare (hstmt, (unsigned char *)shp_sql, SQL_NTS);
/* Á¤¼ö Ű °ªÀ» ù¹øÂ° ¸Å°³º¯¼ö¿¡ ¹ÙÀεåÇÕ´Ï´Ù. */
pcbvalue1 = 0;
rc = SQLBindParameter (hstmt, 1, SQL_PARAM_INPUT, SQL_C_SLONG,
     SQL_INTEGER, 0, 0, &lot_id, 0, &pcbvalue1);
/* ¸ð¾çÀ» µÎ ¹øÂ° ¸Å°³º¯¼ö·Î ¹ÙÀεåÇÕ´Ï´Ù. */
pcbvalue2 = blob_len;
rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_BINARY,
     SQL_BLOB, blob_len, 0, shape_blob, blob_len, &pcbvalue2);
/* »ðÀÔ¹®À» ½ÇÇàÇÕ´Ï´Ù. */
rc = SQLExecute (hstmt);


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