MPolyFromShape は、複数ポリゴン型の形状と地理情報参照システム ID を引き数とし、複数ポリゴンを戻します。
構文
db2gse.MPolyFromShape(ShapeMultiPolygon Blob(1m), SRID db2gse.coordref)
戻りタイプ
db2gse.ST_MultiPolygon
例
以下のコード断片では、LOTS 表にデータを入れます。
LOTS 表には、それぞれの敷地を一意的に識別する lot_id、および敷地境界線の図形を含む複数ポリゴンが格納されています。
CREATE TABLE LOTS (lot_id integer, lot db2gse.ST_MultiPolygon); /* Create the SQL insert statement to populate the lot_id and lot. The question marks are parameter markers that indicate the lot_id and lot values that will be retrieved at runtime. */ strcpy (shp_sql,"insert into LOTS (lot_id,lot) values (?, db2gse.MPolyFromShape (cast(? as blob(1m)), db2gse.coordref()..srid(0)))"); /* Allocate memory for the SQL statement handle and associate the statement handle with the connection handle. */ rc = SQLAllocStmt (handle, &hstmt); /* Prepare the SQL statement for execution. */ rc = SQLPrepare (hstmt, (unsigned char *)shp_sql, SQL_NTS); /* Bind the lot_id integer value to the first parameter. */ pcbvalue1 = 0; rc = SQLBindParameter (hstmt, 1, SQL_PARAM_INPUT, SQL_C_INTEGER, SQL_INTEGER, 0, 0, &lot_id, 0, &pcbvalue1); /* Bind the lot shape to the second parameter. */ pcbvalue2 = lot_len; rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_BLOB, lot_len, 0, lot_shape, lot_len, &pcbvalue2); /* Execute the insert statement. */ rc = SQLExecute (hstmt);