Module org.apache.wicket.util

Package org.apache.wicket.util.resource

Class ZipResourceStream

java.lang.Object

org.apache.wicket.util.resource.AbstractResourceStream

org.apache.wicket.util.resource.ZipResourceStream

All Implemented Interfaces:

Closeable, Serializable, AutoCloseable, IClusterable, IResourceStream, IModifiable

public class ZipResourceStream
extends AbstractResourceStream

An IResourceStream that ZIPs a directory's contents on the fly

NOTE 1. As a future improvement, cache a map of generated ZIP files for every directory and use a Watcher to detect modifications in this directory. Using ehcache would be good for that, but it's not in Wicket dependencies yet. No caching of the generated ZIP files is done yet.

NOTE 2. As a future improvement, implement getLastModified() and request ResourceStreamRequestTarget to generate Last-Modified and Expires HTTP headers. No HTTP cache headers are provided yet. See WICKET-385

Author:

Jean-Baptiste Quenot

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ZipResourceStream(File dir)	Construct.
ZipResourceStream(File dir, boolean recursive)	Construct.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the resource.
String	getContentType()	Gets the mime type of this resource
InputStream	getInputStream()	Gets the resource stream.
Instant	lastModifiedTime()	Gets the last time this modifiable thing changed.
Bytes	length()	Gets the size of this resource

Methods inherited from class org.apache.wicket.util.resource.AbstractResourceStream

getLocale, getStyle, getVariation, setLocale, setStyle, setVariation

Methods inherited from class java.lang.Object

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

Constructor Details

ZipResourceStream

public ZipResourceStream(File dir,
 boolean recursive)

Construct.

Parameters:

dir - The directory where to look for files. The directory itself will not be included in the ZIP.

recursive - If true, all subdirs will be zipped as well

ZipResourceStream

public ZipResourceStream(File dir)

Construct. Until Wicket 1.4-RC3 recursive zip was not supported. In order not to change the behavior, using this constructor will default to recursive == false.

Parameters:

dir - The directory where to look for files. The directory itself will not be included in the ZIP.

Method Details

close

public void close()
           throws IOException

Description copied from interface: IResourceStream

Closes the resource. Normally, this includes closing any underlying input stream returned by getInputStream().

Throws:

IOException

See Also:

• IResourceStream.close()

getContentType

public String getContentType()

Description copied from interface: IResourceStream

Gets the mime type of this resource

Specified by:

getContentType in interface IResourceStream

Overrides:

getContentType in class AbstractResourceStream

Returns:

The mime type of this resource, such as "image/jpeg" or "text/html". Return null to let ResourceStreamRequestHandler handle the Content-Type automatically

See Also:

• IResourceStream.getContentType()

getInputStream

public InputStream getInputStream()
                           throws ResourceStreamNotFoundException

Description copied from interface: IResourceStream

Gets the resource stream. You should not directly close this stream. Instead call the close() method on IResourceStream.

Returns:

Returns the inputStream.

Throws:

ResourceStreamNotFoundException

See Also:

• IResourceStream.getInputStream()

length

public Bytes length()

Description copied from interface: IResourceStream

Gets the size of this resource

Specified by:

length in interface IResourceStream

Overrides:

length in class AbstractResourceStream

Returns:

The size of this resource in the number of bytes, or null if unknown

See Also:

• AbstractResourceStream.length()

lastModifiedTime

public Instant lastModifiedTime()

Description copied from interface: IModifiable

Gets the last time this modifiable thing changed.

Specified by:

lastModifiedTime in interface IModifiable

Overrides:

lastModifiedTime in class AbstractResourceStream

Returns:

the last modification Time or null if that information is not available

See Also:

• AbstractResourceStream.lastModifiedTime()