C++ OGRGeometry::getSpatialReference方法代码示例

OGRErr OGRMemLayer::ISetFeature( OGRFeature *poFeature )

{
    if (!bUpdatable)
        return OGRERR_FAILURE;

    if( poFeature == NULL )
        return OGRERR_FAILURE;

    if( poFeature->GetFID() == OGRNullFID )
    {
        while( iNextCreateFID < nMaxFeatureCount 
               && papoFeatures[iNextCreateFID] != NULL )
            iNextCreateFID++;
        poFeature->SetFID( iNextCreateFID++ );
    }
    else if ( poFeature->GetFID() < OGRNullFID )
    {
        CPLError(CE_Failure, CPLE_NotSupported,
                 "negative FID are not supported");
        return OGRERR_FAILURE;
    }

    if( poFeature->GetFID() >= nMaxFeatureCount )
    {
        GIntBig nNewCount = MAX(2*nMaxFeatureCount+10, poFeature->GetFID() + 1 );
        if( (GIntBig)(size_t)(sizeof(OGRFeature *) * nNewCount) !=
                                (GIntBig)sizeof(OGRFeature *) * nNewCount )
        {
            CPLError(CE_Failure, CPLE_OutOfMemory,
                     "Cannot allocate array of " CPL_FRMT_GIB " elements", nNewCount);
            return OGRERR_FAILURE;
        }

        OGRFeature** papoNewFeatures = (OGRFeature **) 
            VSIRealloc( papoFeatures, (size_t)(sizeof(OGRFeature *) * nNewCount) );
        if (papoNewFeatures == NULL)
        {
            CPLError(CE_Failure, CPLE_OutOfMemory,
                     "Cannot allocate array of " CPL_FRMT_GIB " elements", nNewCount);
            return OGRERR_FAILURE;
        }
        papoFeatures = papoNewFeatures;
        memset( papoFeatures + nMaxFeatureCount, 0, 
                sizeof(OGRFeature *) * (size_t)(nNewCount - nMaxFeatureCount) );
        nMaxFeatureCount = nNewCount;
    }

    if( papoFeatures[poFeature->GetFID()] != NULL )
    {
        delete papoFeatures[poFeature->GetFID()];
        papoFeatures[poFeature->GetFID()] = NULL;
        nFeatureCount--;
    }

    papoFeatures[poFeature->GetFID()] = poFeature->Clone();
    int i;
    for(i = 0; i < poFeatureDefn->GetGeomFieldCount(); i ++)
    {
        OGRGeometry* poGeom = papoFeatures[poFeature->GetFID()]->GetGeomFieldRef(i);
        if( poGeom != NULL && poGeom->getSpatialReference() == NULL )
        {
            poGeom->assignSpatialReference(
                poFeatureDefn->GetGeomFieldDefn(i)->GetSpatialRef());
        }
    }
    nFeatureCount++;

    return OGRERR_NONE;
}

OGRErr      OGRGFTTableLayer::ISetFeature( OGRFeature *poFeature )
{
    GetLayerDefn();

    if (!poDS->IsReadWrite())
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "Operation not available in read-only mode");
        return OGRERR_FAILURE;
    }

    if (osTableId.size() == 0)
    {
        CPLError(CE_Failure, CPLE_NotSupported,
                "Cannot set feature to non-created table");
        return OGRERR_FAILURE;
    }

    if (poDS->GetAccessToken().size() == 0)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "Operation not available in unauthenticated mode");
        return OGRERR_FAILURE;
    }

    if (poFeature->GetFID() == OGRNullFID)
    {
        CPLError( CE_Failure, CPLE_AppDefined,
                  "FID required on features given to SetFeature()." );
        return OGRERR_FAILURE;
    }

    CPLString      osCommand;

    osCommand += "UPDATE ";
    osCommand += osTableId;
    osCommand += " SET ";

    int iField;
    int nFieldCount = poFeatureDefn->GetFieldCount();
    for(iField = 0; iField < nFieldCount + bHiddenGeometryField; iField++)
    {
        if (iField > 0)
            osCommand += ", ";

        if (iField == nFieldCount)
        {
            osCommand += EscapeAndQuote(GetGeometryColumn());
        }
        else
        {
            const char* pszFieldName =
                poFeatureDefn->GetFieldDefn(iField)->GetNameRef();
            osCommand += EscapeAndQuote(pszFieldName);
        }

        osCommand += " = ";

        OGRGeometry* poGeom = poFeature->GetGeometryRef();
        if (iGeometryField != iLatitudeField && iField == iGeometryField &&
            (iField == nFieldCount || poGeom != NULL || !poFeature->IsFieldSet( iField )))
        {
            if (poGeom == NULL)
                osCommand += "''";
            else
            {
                char* pszKML;
                if (poGeom->getSpatialReference() != NULL &&
                    !poGeom->getSpatialReference()->IsSame(poSRS))
                {
                    OGRGeometry* poGeom4326 = poGeom->clone();
                    poGeom4326->transformTo(poSRS);
                    pszKML = poGeom4326->exportToKML();
                    delete poGeom4326;
                }
                else
                {
                    pszKML = poGeom->exportToKML();
                }
                osCommand += "'";
                osCommand += pszKML;
                osCommand += "'";
                CPLFree(pszKML);
            }
            continue;
        }

        if( !poFeature->IsFieldSet( iField ) )
        {
            osCommand += "''";
        }
        else
        {
            OGRFieldType eType = poFeatureDefn->GetFieldDefn(iField)->GetType();
            if (eType != OFTInteger && eType != OFTReal)
            {
                CPLString osTmp;
                const char* pszVal = poFeature->GetFieldAsString(iField);

                if (!CPLIsUTF8(pszVal, -1))
//.........这里部分代码省略.........

OGRErr OGRGMLLayer::CreateFeature( OGRFeature *poFeature )

{
    int bIsGML3Output = poDS->IsGML3Output();
    VSILFILE *fp = poDS->GetOutputFP();
    int bWriteSpaceIndentation = poDS->WriteSpaceIndentation();

    if( !bWriter )
        return OGRERR_FAILURE;

    if (bWriteSpaceIndentation)
        VSIFPrintfL(fp, "  ");
    if (bIsGML3Output)
        poDS->PrintLine( fp, "<ogr:featureMember>" );
    else
        poDS->PrintLine( fp, "<gml:featureMember>" );

    if( poFeature->GetFID() == OGRNullFID )
        poFeature->SetFID( iNextGMLId++ );

    int nGMLIdIndex = -1;
    if (bWriteSpaceIndentation)
        VSIFPrintfL(fp, "    ");
    if (bIsGML3Output)
    {
        nGMLIdIndex = poFeatureDefn->GetFieldIndex("gml_id");
        if (nGMLIdIndex >= 0 && poFeature->IsFieldSet( nGMLIdIndex ) )
            poDS->PrintLine( fp, "<ogr:%s gml:id=\"%s\">",
                poFeatureDefn->GetName(),
                poFeature->GetFieldAsString(nGMLIdIndex) );
        else
            poDS->PrintLine( fp, "<ogr:%s gml:id=\"%s.%ld\">",
                    poFeatureDefn->GetName(),
                    poFeatureDefn->GetName(),
                    poFeature->GetFID() );
    }
    else
        poDS->PrintLine( fp, "<ogr:%s fid=\"F%ld\">",
                poFeatureDefn->GetName(),
                poFeature->GetFID() );

    // Write out Geometry - for now it isn't indented properly.
    /* GML geometries don't like very much the concept of empty geometry */
    OGRGeometry* poGeom = poFeature->GetGeometryRef();
    if( poGeom != NULL && !poGeom->IsEmpty())
    {
        char    *pszGeometry;
        OGREnvelope sGeomBounds;

        poGeom->getEnvelope( &sGeomBounds );
        poDS->GrowExtents( &sGeomBounds );

        if (bIsGML3Output)
        {
            int bCoordSwap;

            if (poGeom->getSpatialReference() == NULL && poSRS != NULL)
                poGeom->assignSpatialReference(poSRS);

            char* pszSRSName = GML_GetSRSName(poGeom->getSpatialReference(), poDS->IsLongSRSRequired(), &bCoordSwap);
            char szLowerCorner[75], szUpperCorner[75];
            if (bCoordSwap)
            {
                OGRMakeWktCoordinate(szLowerCorner, sGeomBounds.MinY, sGeomBounds.MinX, 0, 2);
                OGRMakeWktCoordinate(szUpperCorner, sGeomBounds.MaxY, sGeomBounds.MaxX, 0, 2);
            }
            else
            {
                OGRMakeWktCoordinate(szLowerCorner, sGeomBounds.MinX, sGeomBounds.MinY, 0, 2);
                OGRMakeWktCoordinate(szUpperCorner, sGeomBounds.MaxX, sGeomBounds.MaxY, 0, 2);
            }
            if (bWriteSpaceIndentation)
                VSIFPrintfL(fp, "      ");
            poDS->PrintLine( fp, "<gml:boundedBy><gml:Envelope%s><gml:lowerCorner>%s</gml:lowerCorner><gml:upperCorner>%s</gml:upperCorner></gml:Envelope></gml:boundedBy>",
                             pszSRSName, szLowerCorner, szUpperCorner);
            CPLFree(pszSRSName);
        }

        char** papszOptions = (bIsGML3Output) ? CSLAddString(NULL, "FORMAT=GML3") : NULL;
        if (bIsGML3Output && !poDS->IsLongSRSRequired())
            papszOptions = CSLAddString(papszOptions, "GML3_LONGSRS=NO");
        pszGeometry = poGeom->exportToGML(papszOptions);
        CSLDestroy(papszOptions);
        if (bWriteSpaceIndentation)
            VSIFPrintfL(fp, "      ");
        poDS->PrintLine( fp, "<ogr:geometryProperty>%s</ogr:geometryProperty>",
                    pszGeometry );
        CPLFree( pszGeometry );
    }

    // Write all "set" fields. 
    for( int iField = 0; iField < poFeatureDefn->GetFieldCount(); iField++ )
    {
        
        OGRFieldDefn *poFieldDefn = poFeatureDefn->GetFieldDefn( iField );

        if( poFeature->IsFieldSet( iField ) && iField != nGMLIdIndex )
        {
            const char *pszRaw = poFeature->GetFieldAsString( iField );

//.........这里部分代码省略.........

OGRErr OGRGFTTableLayer::ICreateFeature( OGRFeature *poFeature )

{
    if (!poDS->IsReadWrite())
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "Operation not available in read-only mode");
        return OGRERR_FAILURE;
    }

    if (osTableId.size() == 0)
    {
        CreateTableIfNecessary();
        if (osTableId.size() == 0)
        {
            CPLError(CE_Failure, CPLE_NotSupported,
                    "Cannot add feature to non-created table");
            return OGRERR_FAILURE;
        }
    }

    if (poDS->GetAccessToken().size() == 0)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "Operation not available in unauthenticated mode");
        return OGRERR_FAILURE;
    }

    CPLString      osCommand;

    osCommand += "INSERT INTO ";
    osCommand += osTableId;
    osCommand += " (";

    int iField;
    int nFieldCount = poFeatureDefn->GetFieldCount();
    for(iField = 0; iField < nFieldCount; iField++)
    {
        if (iField > 0)
            osCommand += ", ";

        const char* pszFieldName =
            poFeatureDefn->GetFieldDefn(iField)->GetNameRef();
        osCommand += EscapeAndQuote(pszFieldName);
    }
    if (bHiddenGeometryField)
    {
        if (iField > 0)
            osCommand += ", ";
        osCommand += EscapeAndQuote(GetGeometryColumn());
    }
    osCommand += ") VALUES (";
    for(iField = 0; iField < nFieldCount + bHiddenGeometryField; iField++)
    {
        if (iField > 0)
            osCommand += ", ";

        OGRGeometry* poGeom = poFeature->GetGeometryRef();
        /* If there's a geometry, let's use it in priority over the textual */
        /* content of the field. */
        if (iGeometryField != iLatitudeField && iField == iGeometryField &&
            (iField == nFieldCount || poGeom != NULL || !poFeature->IsFieldSet( iField )))
        {
            if (poGeom == NULL)
                osCommand += "''";
            else
            {
                char* pszKML;
                if (poGeom->getSpatialReference() != NULL &&
                    !poGeom->getSpatialReference()->IsSame(poSRS))
                {
                    OGRGeometry* poGeom4326 = poGeom->clone();
                    poGeom4326->transformTo(poSRS);
                    pszKML = poGeom4326->exportToKML();
                    delete poGeom4326;
                }
                else
                {
                    pszKML = poGeom->exportToKML();
                }
                osCommand += "'";
                osCommand += pszKML;
                osCommand += "'";
                CPLFree(pszKML);
            }
            continue;
        }

        if( !poFeature->IsFieldSet( iField ) )
        {
            osCommand += "''";
        }
        else
        {
            OGRFieldType eType = poFeatureDefn->GetFieldDefn(iField)->GetType();
            if (eType != OFTInteger && eType != OFTReal)
            {
                CPLString osTmp;
                const char* pszVal = poFeature->GetFieldAsString(iField);

//.........这里部分代码省略.........

//.........这里部分代码省略.........
        {
            poDS->PrintLine( fp, "%s fid=\"%s\">",
                             poFeatureDefn->GetName(),
                             poFeature->GetFieldAsString(nGMLIdIndex) );
        }
        else
        {
            poDS->PrintLine( fp, "%s fid=\"%s." CPL_FRMT_GIB "\">",
                             poFeatureDefn->GetName(),
                             poFeatureDefn->GetName(),
                             poFeature->GetFID() );
        }
    }


    for( int iGeomField = 0; iGeomField < poFeatureDefn->GetGeomFieldCount(); iGeomField++ )
    {
        OGRGeomFieldDefn *poFieldDefn = poFeatureDefn->GetGeomFieldDefn(iGeomField);

        // Write out Geometry - for now it isn't indented properly.
        /* GML geometries don't like very much the concept of empty geometry */
        OGRGeometry* poGeom = poFeature->GetGeomFieldRef(iGeomField);
        if( poGeom != NULL && !poGeom->IsEmpty())
        {
            char    *pszGeometry;
            OGREnvelope3D sGeomBounds;

            int nCoordDimension = poGeom->getCoordinateDimension();

            poGeom->getEnvelope( &sGeomBounds );
            if( bSameSRS )
                poDS->GrowExtents( &sGeomBounds, nCoordDimension );

            if (poGeom->getSpatialReference() == NULL && poFieldDefn->GetSpatialRef() != NULL)
                poGeom->assignSpatialReference(poFieldDefn->GetSpatialRef());

            if (bIsGML3Output && poDS->WriteFeatureBoundedBy())
            {
                bool bCoordSwap;

                char* pszSRSName = GML_GetSRSName(poGeom->getSpatialReference(), poDS->IsLongSRSRequired(), &bCoordSwap);
                char szLowerCorner[75], szUpperCorner[75];
                if (bCoordSwap)
                {
                    OGRMakeWktCoordinate(szLowerCorner, sGeomBounds.MinY, sGeomBounds.MinX, sGeomBounds.MinZ, nCoordDimension);
                    OGRMakeWktCoordinate(szUpperCorner, sGeomBounds.MaxY, sGeomBounds.MaxX, sGeomBounds.MaxZ, nCoordDimension);
                }
                else
                {
                    OGRMakeWktCoordinate(szLowerCorner, sGeomBounds.MinX, sGeomBounds.MinY, sGeomBounds.MinZ, nCoordDimension);
                    OGRMakeWktCoordinate(szUpperCorner, sGeomBounds.MaxX, sGeomBounds.MaxY, sGeomBounds.MaxZ, nCoordDimension);
                }
                if (bWriteSpaceIndentation)
                    VSIFPrintfL(fp, "      ");
                poDS->PrintLine( fp, "<gml:boundedBy><gml:Envelope%s%s><gml:lowerCorner>%s</gml:lowerCorner><gml:upperCorner>%s</gml:upperCorner></gml:Envelope></gml:boundedBy>",
                                (nCoordDimension == 3) ? " srsDimension=\"3\"" : "",pszSRSName, szLowerCorner, szUpperCorner);
                CPLFree(pszSRSName);
            }

            char** papszOptions = (bIsGML3Output) ? CSLAddString(NULL, "FORMAT=GML3") : NULL;
            if (bIsGML3Output && !poDS->IsLongSRSRequired())
                papszOptions = CSLAddString(papszOptions, "GML3_LONGSRS=NO");
            const char* pszSRSDimensionLoc = poDS->GetSRSDimensionLoc();
            if( pszSRSDimensionLoc != NULL )
                papszOptions = CSLSetNameValue(papszOptions, "SRSDIMENSION_LOC", pszSRSDimensionLoc);
            if (poDS->IsGML32Output())