org.geotools.gce.pgraster

Class PGRasterReader

Object

AbstractGridCoverage2DReader

PGRasterReader

All Implemented Interfaces:

GridCoverage2DReader, GridCoverageReader

public class PGRasterReader
extends AbstractGridCoverage2DReader

PostGIS raster reader.

Field Summary

Fields inherited from class AbstractGridCoverage2DReader

closeMe, coverageFactory, coverageName, crs, dtLayout, EPS, gzipped, highestRes, hints, inStream, inStreamSPI, numOverviews, offsets, originalEnvelope, originalGridRange, overViewResolutions, raster2Model, scales, 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_EPSGCODES, MULTICRS_READER, REPROJECTING_READER, SOURCE_URL_PROPERTY, TIME_DOMAIN, TIME_DOMAIN_MAXIMUM, TIME_DOMAIN_MINIMUM, TIME_DOMAIN_RESOLUTION

Constructor Summary

Constructors

Constructor and Description
PGRasterReader(PGRasterConfig config, PGRasterFormat format, Hints hints)

Method Summary

Modifier and Type	Method and Description
void	dispose() Disposes this reader.
Format	getFormat() Returns the format handled by this GridCoverageReader.
String[]	getMetadataNames() Returns the list of metadata keywords associated with the input source as a whole (not associated with any particular grid coverage).
String	getMetadataValue(String coverageName, String name) Retrieve the metadata value for a given metadata name for a specified coverage.
String	name()
GridCoverage2D	read(GeneralParameterValue[] params) Read the current grid coverage from the stream.

Methods inherited from class AbstractGridCoverage2DReader

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

Methods inherited from class Object

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

Constructor Detail

PGRasterReader

public PGRasterReader(PGRasterConfig config,
                      PGRasterFormat format,
                      Hints hints)
               throws IOException

Throws:

IOException

Method Detail

name

public String name()

getFormat

public Format getFormat()

Description copied from interface: GridCoverageReader

Returns the format handled by this GridCoverageReader.

getMetadataNames

public String[] getMetadataNames()

Description copied from interface: GridCoverageReader

Returns the list of metadata keywords associated with the input source as a whole (not associated with any particular grid coverage). If no metadata is available, the array will be empty.

Specified by:

getMetadataNames in interface GridCoverageReader

Overrides:

getMetadataNames in class AbstractGridCoverage2DReader

Returns:

The list of metadata keywords for the input source.

See Also:

GridCoverageReader.getMetadataNames()

getMetadataValue

public String getMetadataValue(String coverageName,
                               String name)

Description copied from interface: GridCoverageReader

Retrieve the metadata value for a given metadata name for a specified coverage.

Specified by:

getMetadataValue in interface GridCoverageReader

Overrides:

getMetadataValue in class AbstractGridCoverage2DReader

name - Metadata keyword for which to retrieve metadata.

Returns:

The metadata value for the given metadata name. Should be one of the name returned by GridCoverageReader.getMetadataNames().

read

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

Description copied from class: AbstractGridCoverage2DReader

Read the current grid coverage from the stream.

Example:

Specified by:

read in interface GridCoverage2DReader

Specified by:

read in interface GridCoverageReader

Specified by:

read in class AbstractGridCoverage2DReader

Parameters:

params - 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

dispose

public void dispose()

Description copied from class: AbstractGridCoverage2DReader

Disposes this reader.

This method just tries to close the underlying ImageInputStream.

Specified by:

dispose in interface GridCoverageReader

Overrides:

dispose in class AbstractGridCoverage2DReader