org.glassfish.api.deployment.archive

Interface ArchiveHandler

All Known Subinterfaces:

CompositeHandler

@Contract
public interface ArchiveHandler

ArchiveHandlers are handling certain archive type. An archive has a unique type which is usually defines how classes and resources are loaded from the archive. An archive is also known as a module. It represents a unit of deployment. ArchiveHandler should be stateless objects although the implementations of this contract can control that using the scope element of the @Service annotation.

Author:

Jerome Dochez, Sanjeeb Sahoo

Method Summary

Methods

Modifier and Type	Method and Description
void	expand(ReadableArchive source, WritableArchive target, DeploymentContext context) Prepares the jar file to a format the ApplicationContainer is expecting.
String	getArchiveType() This method is semantically equivalent to ArchiveDetector.getArchiveType() except that this method returns string equivalent of ArchiveType because of backward compatibility reasons.
ClassLoader	getClassLoader(ClassLoader parent, DeploymentContext context) Creates a classloader that can load code from inside the archive.
List<URI>	getClassPathURIs(ReadableArchive archive) Returns the classpath URIs for this archive.
String	getDefaultApplicationName(ReadableArchive archive) Returns the default name by which the specified archive can be identified.
String	getDefaultApplicationName(ReadableArchive archive, DeploymentContext context)
Manifest	getManifest(ReadableArchive archive) Returns the manifest file for this archive, this file is usually located at the META-INF/MANIFEST location, however, certain archive type can change this default location or use another mean of expressing manifest information.
String	getVersionIdentifier(ReadableArchive archive) Returns the version identifier by which the specified archive can be deployed.
boolean	handles(ReadableArchive archive) Returns true if this handler understands the specified archive and can process it.

Method Detail

getArchiveType

String getArchiveType()

This method is semantically equivalent to ArchiveDetector.getArchiveType() except that this method returns string equivalent of ArchiveType because of backward compatibility reasons.

Returns:

the type of the archive or deployment unit handled by this handler

See Also:

ArchiveDetector.getArchiveType()

getDefaultApplicationName

String getDefaultApplicationName(ReadableArchive archive)

Returns the default name by which the specified archive can be identified.

The default name is used, for example, during deployment if no name was specified explicitly as part of the deployment request.

Parameters:

archive - the archive for which to provide the default name

Returns:

the default name for identifying the specified archive

getDefaultApplicationName

String getDefaultApplicationName(ReadableArchive archive,
                               DeploymentContext context)

getVersionIdentifier

String getVersionIdentifier(ReadableArchive archive)

Returns the version identifier by which the specified archive can be deployed.

The version identifier is used during deployment if no version identifier was specified null must be returned

Parameters:

archive - the archive for which to provide the version identifier

Returns:

the version identifier for versioning the deployment archive or null

handles

boolean handles(ReadableArchive archive)
                throws IOException

Returns true if this handler understands the specified archive and can process it.

Throws:

IOException - The implementation of this method is expected to interact with the given archive, and if methods on ReadableArchive throws an IOException, it can be simply tunneled to the caller.

getClassLoader

ClassLoader getClassLoader(ClassLoader parent,
                         DeploymentContext context)

Creates a classloader that can load code from inside the archive.

Parameters:

parent - The newly created classloader to be returned must eventually delegate to this classloader. (This classloader is capable of resolving APIs and other things that the container

context -

expand

void expand(ReadableArchive source,
          WritableArchive target,
          DeploymentContext context)
            throws IOException

Prepares the jar file to a format the ApplicationContainer is expecting. This could be just a pure unzipping of the jar or nothing at all.

Parameters:

source - of the expanding

target - of the expanding

context -

Throws:

IOException

getManifest

Manifest getManifest(ReadableArchive archive)
                     throws IOException

Returns the manifest file for this archive, this file is usually located at the META-INF/MANIFEST location, however, certain archive type can change this default location or use another mean of expressing manifest information.

Parameters:

archive - file

Returns:

manifest instance or null if this archive has no manifest

Throws:

IOException

getClassPathURIs

List<URI> getClassPathURIs(ReadableArchive archive)

Returns the classpath URIs for this archive.

Parameters:

archive - file

Returns:

classpath URIs for this archive