Package edu.uiuc.ncsa.qdl.vfs

Class VFSZipFileProvider

java.lang.Object

edu.uiuc.ncsa.qdl.vfs.AbstractVFSFileProvider

edu.uiuc.ncsa.qdl.vfs.VFSZipFileProvider

All Implemented Interfaces:

VFSFileProvider, Serializable

public class VFSZipFileProvider
extends AbstractVFSFileProvider

This is experimental. Part of the issue is that the file has to be read in one go (can be quite time consuming) and stashed then managed. This means making a virtual file system and managing it potentially. Need to think about how to do this more efficiently. It is not practical to mount zip file sin any other than read only mode for now since the Java classes that manage this require the entire file get re-written for any changes.

Created by Jeff Gaynor
on 3/5/20 at 7:36 AM

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	VFSZipFileProvider.MapZipEntry

Constructor Summary

Constructors

Constructor	Description
VFSZipFileProvider(String pathToZip, String scheme, String mountPoint, boolean canRead, boolean canWrite)

Method Summary

Modifier and Type	Method	Description
boolean	canWrite()	Zip files are not writeable.
boolean	contains(String path)	Contains is a type of read.
String[]	dir(String path)
VFSEntry	get(String path, int type)	Get the named item.
String	getType()	mostly this is so when information is being displayed to the user they can see the origin of the provider.
protected Path	getZipPath(String path)
protected void	init()

Methods inherited from class edu.uiuc.ncsa.qdl.vfs.AbstractVFSFileProvider

canRead, checkPath, checkScheme, delete, easSupported, getCurrentDir, getFileInfo, getMountPoint, getRealPath, getScheme, getStoreRoot, isAbsolute, isChildOf, isDirectory, isScript, length, mkdir, put, put, rm, rmdir, setCurrentDir, setMountPoint, setRead, setScheme, setWrite, unqualifyPath

Methods inherited from class java.lang.Object

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

Constructor Detail

VFSZipFileProvider

public VFSZipFileProvider(String pathToZip,
                          String scheme,
                          String mountPoint,
                          boolean canRead,
                          boolean canWrite)

Method Detail

getType

public String getType()

Description copied from interface: VFSFileProvider

mostly this is so when information is being displayed to the user they can see the origin of the provider.

Returns:

init

protected void init()

getZipPath

protected Path getZipPath(String path)

get

public VFSEntry get(String path,
                    int type)
             throws Throwable

Description copied from interface: VFSFileProvider

Get the named item. Note that all of the names are qualified.

Specified by:

get in interface VFSFileProvider

Overrides:

get in class AbstractVFSFileProvider

Returns:

Throws:

Throwable

contains

public boolean contains(String path)
                 throws Throwable

Description copied from interface: VFSFileProvider

Contains is a type of read. If the store is not readable, it cannot tell if it contains an entry.

Specified by:

contains in interface VFSFileProvider

Overrides:

contains in class AbstractVFSFileProvider

Returns:

Throws:

Throwable

dir

public String[] dir(String path)
             throws Throwable

Specified by:

dir in interface VFSFileProvider

Overrides:

dir in class AbstractVFSFileProvider

Throws:

Throwable

canWrite

public boolean canWrite()

Zip files are not writeable.

Specified by:

canWrite in interface VFSFileProvider

Overrides:

canWrite in class AbstractVFSFileProvider

Returns: