C API Java API

/* A valid SE_RASTERATTR structure must be created before using any other function that requires an SE_RASTERATTR pointer. The SE_RASTERATTR structure contains information about raster attributes and is used to create a valid raster. */

LONG rc, max_level, raster_width = 256, raster_height = 256, tileWidth = 64, tileHeight = 64, number_of_bands = 3, num_colormap_entries, bits_per_pixel,bytes;
SE_RASTERATTR raster_attrib;
SE_STREAM stream;
SE_ENVELOPE rect;
SE_COLORMAP_TYPE *colormap_type;
SE_COLORMAP_DATA_TYPE *colormap_data_type;
UCHAR *colormap_data;
BOOL bitmask, scanline;

/* Create the SE_RASTERATTR raster attribute info structure */
rc = SE_rasterattr_create (&raster_attrib, FALSE);

rc = SE_rasterattr_set_pixel_type(raster_attrib, SE_PIXEL_TYPE_8BIT_U);

/*Create an 8-bit RGB Colormap array "colormap_data" and use in following function call*/
rc = SE_rasterattr_set_colormap (*raster_attrib, SE_COLORMAP_RGB, SE_COLORMAP_DATA_BYTE, 256, (void *)colormap_data);

rc = SE_rasterattr_set_compression_type(*raster_attrib, SE_COMPRESSION_LZ77);
rc = SE_rasterattr_set_image_size (*raster_attrib, raster_width, raster_height, number_of_bands);
rc = SE_rasterattr_set_mask_mode (*raster_attrib, bitmask);
rc = SE_rasterattr_set_mosaic_mode (*raster_attrib, FALSE);
rc = SE_rasterattr_set_pyramid_info (*raster_attrib, max_level, FALSE, interpolation);
rc = SE_rasterattr_set_pixel_type (*raster_attrib,pixel_type);
rc = SE_rasterattr_set_tile_size (*raster_attrib, tileWidth, tileHeight);
rc = SE_rasterattr_set_pyramid_info(*raster_attrib, max_level, FALSE, SE_INTERPOLATION_BILINEAR);

/* Set min and max for the rectangle and generate shape */
rect.minx = minx;
rect.miny = miny;
rect.maxx = maxx;
rect.maxy = maxy;
ret = SE_rasterattr_set_extent(*raster_attrib, &rect);

/*The callback function determines how SE_stream_execute will enter the image pixel data into the raster column*/
ret = SE_rasterattr_set_callback(*raster_attrib, raster_callback_function(), NULL);

//Bind the address of our input variables and indicators
ret = SE_stream_bind_input_column(stream, 4, raster_attrib, ?Null);

// Execute
ret = SE_stream_execute (stream);

// Free resources
ret = SE_stream_free (stream);
SE_rasterattr_free (*raster_attrib);

/*An SeRasterAttr object has to be created first and inserted into the database. The SeRaster object is then retrieved from the SeRasterAttr object using the SeRasterAttr.getRasterInfo() method. Thus, creation of SeRasterAttr is a pre-requisite for creating a SeRaster.*/

BufferedImage image = ..........;

int mBufImageType = image.getType();
int mBufImageWidth = image.getWidth();
int mBufImageHeight = image.getHeight();

boolean inputMode = true;
boolean skipLevelOne = false;
boolean maskMode = true;

int bandWidth = mBufImageWidth;
int bandHeight = mBufImageHeight;
int numBands = 3;
int tileWidth = bandWidth >> 3;
int tileHeight = bandHeight >> 3;
int pixelType = SeRaster.SE_PIXEL_TYPE_16BIT_U;
int compressTyp = SeRaster.SE_COMPRESSION_NONE;
int maxLevel = 3;
int interpolation = SeRaster.SE_INTERPOLATION_NONE;
int maskType = BufferedImageData.MASK_ALL_ON;

/**
SeRasterAttr object can be set in one of two modes:
TRUE - For load and insert operation AND
FALSE = For query and update operation.
*/
SeRasterAttr attr = new SeRasterAttr(inputMode);
attr.setImageSize(bandWidth, bandHeight, numBands);
attr.setTileSize(tileWidth, tileHeight);
attr.setPixelType(pixelType);
attr.setCompressionType(compressType);
attr.setPyramidInfo(maxLevel, skipLevelOne, interpolation);
attr.setMaskMode(maskMode);
SeExtent extent = new SeExtent(0, 0, bandWidth, bandHeight);
attr.setExtent(extent);

//Set callback func
Object userContext = null;
RasterCallBackImpl myRasCallBack = new RasterCallBackImpl(attr, maskType, image);
attr.setRasterCallBack(myRasCallBack, userContext);

C API Java API

C API Code

//Retrieve attr from table
SeSqlConstruct sqlCons = new SeSqlConstruct(tableName);
SeQuery query = new SeQuery(conn, columns, sqlCons);
query.prepareQuery();
query.execute();

SeRow row = query.fetch();
SeRasterAttr attr = row.getRaster(rastercolNum);

SeRaster raster = attr.getRasterInfo();
OR
SeConnection conn = ........;
SeRasterColumn rasterLayer = ........;
SeObjectId rasColId = rasterLayer.getID();

SeRaster raster = new SeRaster(conn, rasColId);