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C++ OGRLayer::SetIgnoredFields方法代码示例

本文整理汇总了C++中OGRLayer::SetIgnoredFields方法的典型用法代码示例。如果您正苦于以下问题:C++ OGRLayer::SetIgnoredFields方法的具体用法?C++ OGRLayer::SetIgnoredFields怎么用?C++ OGRLayer::SetIgnoredFields使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在OGRLayer的用法示例。


在下文中一共展示了OGRLayer::SetIgnoredFields方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: oMutexHolder


//.........这里部分代码省略.........
        if( rc == SQLITE_OK )
        {
            const char* pszInsertInto = CPLSPrintf(
                "INSERT INTO \"%s\" (pkid, xmin, xmax, ymin, ymax) "
                "VALUES (?,?,?,?,?)", osIdxNameEscaped.c_str());
            rc = sqlite3_prepare(hDB, pszInsertInto, -1, &hStmt, NULL);
        }

        OGRFeature* poFeature;
        OGREnvelope sEnvelope;
        OGR2SQLITE_IgnoreAllFieldsExceptGeometry(poLayer);
        poLayer->ResetReading();

        while( rc == SQLITE_OK &&
               (poFeature = poLayer->GetNextFeature()) != NULL )
        {
            OGRGeometry* poGeom = poFeature->GetGeometryRef();
            if( poGeom != NULL && !poGeom->IsEmpty() )
            {
                poGeom->getEnvelope(&sEnvelope);
                sqlite3_bind_int64(hStmt, 1,
                                   (sqlite3_int64) poFeature->GetFID() );
                sqlite3_bind_double(hStmt, 2, sEnvelope.MinX);
                sqlite3_bind_double(hStmt, 3, sEnvelope.MaxX);
                sqlite3_bind_double(hStmt, 4, sEnvelope.MinY);
                sqlite3_bind_double(hStmt, 5, sEnvelope.MaxY);
                rc = sqlite3_step(hStmt);
                if( rc == SQLITE_OK || rc == SQLITE_DONE )
                    rc = sqlite3_reset(hStmt);
            }
            delete poFeature;
        }

        poLayer->SetIgnoredFields(NULL);

        sqlite3_finalize(hStmt);

        if( rc == SQLITE_OK )
            rc = sqlite3_exec( hDB, "COMMIT", NULL, NULL, NULL );
        else
        {
            CPLDebug("SQLITE",
                     "Error occured during spatial index creation : %s",
                     sqlite3_errmsg(hDB));
            rc = sqlite3_exec( hDB, "ROLLBACK", NULL, NULL, NULL );
        }
#endif //  ENABLE_VIRTUAL_OGR_SPATIAL_INDEX

#endif // HAVE_SPATIALITE

    }

/* -------------------------------------------------------------------- */
/*      Reload, so that virtual tables are recognized                   */
/* -------------------------------------------------------------------- */
    poSQLiteDS->ReloadLayers();

/* -------------------------------------------------------------------- */
/*      Prepare the statement.                                          */
/* -------------------------------------------------------------------- */
    /* This will speed-up layer creation */
    /* ORDER BY are costly to evaluate and are not necessary to establish */
    /* the layer definition. */
    int bUseStatementForGetNextFeature = TRUE;
    int bEmptyLayer = FALSE;
开发者ID:imincik,项目名称:pkg-gdal,代码行数:66,代码来源:ogrsqliteexecutesql.cpp


注:本文中的OGRLayer::SetIgnoredFields方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。