Package org.locationtech.jts.jump.io.datasource

Class DelegatingCompressedFileHandler

java.lang.Object

org.locationtech.jts.jump.io.datasource.DelegatingCompressedFileHandler

All Implemented Interfaces:

JUMPReader

public class DelegatingCompressedFileHandler
extends Object
implements JUMPReader

If the file is a .zip or .gz file, mangles the DriverProperties into the format expected by many of the first JUMPReaders, which take responsibility for doing the decompression. Really, JUMPReaders should not have to be responsible for decompression -- they should be wrapped by a CompressedFileHandler (not yet written) which would decompress the data before handing it to the JUMPReader. Anyway, developers should now be writing DataSources instead of JUMPReaders.

Constructor Summary

Constructors

Constructor	Description
DelegatingCompressedFileHandler(JUMPReader reader, Collection endings)	Constructs a DelegatingCompressedFileHandler that wraps a JUMPReader.

Method Summary

Modifier and Type	Method	Description
protected void	mangle(DriverProperties dp, String fileProperty, String compressedFileProperty, Collection myEndings)
FeatureCollection	read(DriverProperties dp)	Read the specified file using the filename given by the "File" property and any other parameters.

Methods inherited from class java.lang.Object

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

Constructor Detail

DelegatingCompressedFileHandler

public DelegatingCompressedFileHandler(JUMPReader reader,
                                       Collection endings)

Constructs a DelegatingCompressedFileHandler that wraps a JUMPReader.

Parameters:

endings - strings found at the ends of filenames, used to identify the file to extract from a .zip; does not apply to .gz files

Method Detail

read

public FeatureCollection read(DriverProperties dp)
                       throws Exception

Description copied from interface: JUMPReader

Read the specified file using the filename given by the "File" property and any other parameters.

Specified by:

read in interface JUMPReader

Parameters:

dp - only the "File" property is necessary; if it is a .zip or .gz, the required "CompressedFile" property will be determined automatically

Throws:

Exception

mangle

protected void mangle(DriverProperties dp,
                      String fileProperty,
                      String compressedFileProperty,
                      Collection myEndings)
               throws Exception

Throws:

Exception