org.geotools.mbtiles.mosaic

Class MBTilesReader

Object

AbstractGridCoverage2DReader

MBTilesReader

All Implemented Interfaces:

GridCoverage2DReader, GridCoverageReader

public class MBTilesReader
extends AbstractGridCoverage2DReader

Field Summary

Fields

Modifier and Type	Field and Description
protected ReferencedEnvelope	bounds
protected GridCoverageFactory	coverageFactory
protected static int	DEFAULT_TILE_SIZE
protected MBTilesMetadata	metadata
protected File	sourceFile
protected static ReferencedEnvelope	WORLD_ENVELOPE
protected static int	ZOOM_LEVEL_BASE

Fields inherited from class AbstractGridCoverage2DReader

closeMe, coverageName, crs, dtLayout, EPS, gzipped, highestRes, hints, inStream, inStreamSPI, numOverviews, originalEnvelope, originalGridRange, overViewResolutions, raster2Model, source

Fields inherited from interface GridCoverage2DReader

ELEVATION_DOMAIN, ELEVATION_DOMAIN_MAXIMUM, ELEVATION_DOMAIN_MINIMUM, ELEVATION_DOMAIN_RESOLUTION, FILE_SOURCE_PROPERTY, HAS_ELEVATION_DOMAIN, HAS_TIME_DOMAIN, MULTICRS_READER, REPROJECTING_READER, SOURCE_URL_PROPERTY, TIME_DOMAIN, TIME_DOMAIN_MAXIMUM, TIME_DOMAIN_MINIMUM, TIME_DOMAIN_RESOLUTION

Constructor Summary

Constructors

Constructor and Description
MBTilesReader(Object source, Hints hints)

Method Summary

Modifier and Type	Method and Description
Format	getFormat() Returns the format handled by this GridCoverageReader.
protected BufferedImage	getStartImage(BufferedImage copyFrom, int width, int height)
protected BufferedImage	getStartImage(int width, int height)
protected BufferedImage	getStartImage(int imageType, int width, int height)
GridCoverage2D	read(GeneralParameterValue[] parameters) Read the current grid coverage from the stream.
protected static BufferedImage	readImage(byte[] data, String format)

Methods inherited from class AbstractGridCoverage2DReader

addAllSiblings, addSiblings, checkName, createImageCoverage, createImageCoverage, createImageCoverage, createImageCoverage, decimationOnReadingControl, dispose, finalize, getCoordinateReferenceSystem, getCoordinateReferenceSystem, getCrs, getCurrentSubname, getDatasetLayout, getDatasetLayout, getDynamicParameters, getDynamicParameters, getFiles, getGridCoverageCount, getGridCoverageNames, getGroundControlPoints, getGroundControlPoints, getHighestRes, getImageLayout, getImageLayout, getInfo, getInfo, getMetadataNames, getMetadataNames, getMetadataValue, getMetadataValue, getMultiLevelROIProvider, getNumOverviews, getNumOverviews, getOriginalEnvelope, getOriginalEnvelope, getOriginalGridRange, getOriginalGridRange, getOriginalGridToWorld, getOriginalGridToWorld, getOverviewGridEnvelope, getOverviewGridEnvelope, getReadingResolutions, getReadingResolutions, getRescaledRasterToModel, getResolution, getResolutionLevels, getResolutionLevels, getSibling, getSource, getSourceAsFile, hasMoreGridCoverages, listSubNames, read, setlayout, setLayout, setReadParams, setReadParams, skip

Methods inherited from class Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

WORLD_ENVELOPE

protected static final ReferencedEnvelope WORLD_ENVELOPE

DEFAULT_TILE_SIZE

protected static final int DEFAULT_TILE_SIZE

See Also:

Constant Field Values

ZOOM_LEVEL_BASE

protected static final int ZOOM_LEVEL_BASE

See Also:

Constant Field Values

coverageFactory

protected GridCoverageFactory coverageFactory

metadata

protected MBTilesMetadata metadata

bounds

protected ReferencedEnvelope bounds

sourceFile

protected File sourceFile

Constructor Detail

MBTilesReader

public MBTilesReader(Object source,
                     Hints hints)
              throws IOException

Throws:

IOException

Method Detail

getFormat

public Format getFormat()

Description copied from interface: GridCoverageReader

Returns the format handled by this GridCoverageReader.

read

public GridCoverage2D read(GeneralParameterValue[] parameters)
                    throws IllegalArgumentException,
                           IOException

Description copied from class: AbstractGridCoverage2DReader

Read the current grid coverage from the stream.

Example:

The method AbstractGridCoverage2DReader.hasMoreGridCoverages() should be invoked first in order to verify that a coverage is available.

Specified by:

read in interface GridCoverage2DReader

Specified by:

read in interface GridCoverageReader

Specified by:

read in class AbstractGridCoverage2DReader

Parameters:

parameters - Optional parameters matching Format.getReadParameters().

Returns:

a grid coverage from the input source.

Throws:

InvalidParameterNameException - if a parameter in parameters doesn't have a recognized name.

InvalidParameterValueException - if a parameter in parameters doesn't have a valid value.

ParameterNotFoundException - if a parameter was required for the operation but was not provided in the parameters list.

IOException - if a read operation failed for some other input/output reason, including FileNotFoundException if no file with the given name can be found, or IIOException if an error was thrown by the underlying image library.

IllegalArgumentException

readImage

protected static BufferedImage readImage(byte[] data,
                                         String format)
                                  throws IOException

Throws:

IOException

getStartImage

protected BufferedImage getStartImage(BufferedImage copyFrom,
                                      int width,
                                      int height)

getStartImage

protected BufferedImage getStartImage(int imageType,
                                      int width,
                                      int height)

getStartImage

protected BufferedImage getStartImage(int width,
                                      int height)