Package org.jboss.modules

Class LocalModuleFinder

java.lang.Object

org.jboss.modules.LocalModuleFinder

All Implemented Interfaces:

AutoCloseable, IterableModuleFinder, ModuleFinder

public final class LocalModuleFinder
extends Object
implements IterableModuleFinder, AutoCloseable

A module finder which locates module specifications which are stored in a local module repository on the filesystem, which uses module.xml descriptors.

Author:

David M. Lloyd, Richard Opalka

Constructor Summary

Constructors

Constructor	Description
LocalModuleFinder()	Construct a new instance, using the module.path system property or the JAVA_MODULEPATH environment variable to get the list of module repository roots.
LocalModuleFinder(boolean supportLayersAndAddOns)	Construct a new instance, using the module.path system property or the JAVA_MODULEPATH environment variable to get the list of module repository roots.
LocalModuleFinder(File[] repoRoots)	Construct a new instance.
LocalModuleFinder(File[] repoRoots, PathFilter pathFilter)	Construct a new instance.

Method Summary

Modifier and Type	Method	Description
void	close()	Close this module loader and release all backing files.
ModuleSpec	findModule(String name, ModuleLoader delegateLoader)	Find a module specification for the given name.
Iterator<String>	iterateModules(String baseName, boolean recursive)	Iterate the modules which can be located via this module finder.
static ModuleSpec	parseModuleXmlFile(String name, ModuleLoader delegateLoader, File... roots)	Parse a module.xml file and return the corresponding module specification.
static ModuleSpec	parseModuleXmlFile(ModuleIdentifier identifier, ModuleLoader delegateLoader, File... roots)	Deprecated. Use parseModuleXmlFile(String, ModuleLoader, File...) instead.
String	toString()

Methods inherited from interface org.jboss.modules.IterableModuleFinder

iterateModules

Methods inherited from interface org.jboss.modules.ModuleFinder

findModule

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalModuleFinder

public LocalModuleFinder(File[] repoRoots,
                         PathFilter pathFilter)

Construct a new instance.

Parameters:

repoRoots - the repository roots to use

pathFilter - the path filter to use

LocalModuleFinder

public LocalModuleFinder(File[] repoRoots)

Construct a new instance.

Parameters:

repoRoots - the repository roots to use

LocalModuleFinder

public LocalModuleFinder()

Construct a new instance, using the module.path system property or the JAVA_MODULEPATH environment variable to get the list of module repository roots.

This is equivalent to a call to LocalModuleFinder(true).

LocalModuleFinder

public LocalModuleFinder(boolean supportLayersAndAddOns)

Construct a new instance, using the module.path system property or the JAVA_MODULEPATH environment variable to get the list of module repository roots.

Parameters:

supportLayersAndAddOns - true if the identified module repository roots should be checked for an internal structure of child "layer" and "add-on" directories that may also be treated as module roots lower in precedence than the parent root. Any "layers" subdirectories whose names are specified in a layers.conf file found in the module repository root will be added in the precedence of order specified in the layers.conf file; all "add-on" subdirectories will be added at a lower precedence than all "layers" and with no guaranteed precedence order between them. If false no check for "layer" and "add-on" directories will be performed.

Method Detail

findModule

public ModuleSpec findModule(String name,
                             ModuleLoader delegateLoader)
                      throws ModuleLoadException

Description copied from interface: ModuleFinder

Find a module specification for the given name. The default implementation delegates to the legacy ModuleFinder.findModule(ModuleIdentifier, ModuleLoader) method.

Specified by:

findModule in interface ModuleFinder

Parameters:

name - the module name

delegateLoader - the module loader from which dependencies should be resolved

Returns:

the module specification, or null if no specification is found for this identifier

Throws:

ModuleLoadException

parseModuleXmlFile

@Deprecated
public static ModuleSpec parseModuleXmlFile(ModuleIdentifier identifier,
                                            ModuleLoader delegateLoader,
                                            File... roots)
                                     throws IOException,
                                            ModuleLoadException

Deprecated. Use parseModuleXmlFile(String, ModuleLoader, File...) instead.

Parse a module.xml file and return the corresponding module specification.

Parameters:

identifier - the identifier to load

delegateLoader - the delegate module loader to use for module specifications

roots - the repository root paths to search

Returns:

the module specification

Throws:

IOException - if reading the module file failed

ModuleLoadException - if creating the module specification failed (e.g. due to a parse error)

parseModuleXmlFile

public static ModuleSpec parseModuleXmlFile(String name,
                                            ModuleLoader delegateLoader,
                                            File... roots)
                                     throws IOException,
                                            ModuleLoadException

Parse a module.xml file and return the corresponding module specification.

Parameters:

name - the name of the module to load

delegateLoader - the delegate module loader to use for module specifications

roots - the repository root paths to search

Returns:

the module specification

Throws:

IOException - if reading the module file failed

ModuleLoadException - if creating the module specification failed (e.g. due to a parse error)

iterateModules

public Iterator<String> iterateModules(String baseName,
                                       boolean recursive)

Description copied from interface: IterableModuleFinder

Iterate the modules which can be located via this module finder.

Specified by:

iterateModules in interface IterableModuleFinder

Parameters:

baseName - the identifier to start with, or null to iterate all modules; ignored if this module loader does not have a concept of nested modules

recursive - true to find recursively nested modules, false to only find immediately nested modules; ignored if this module finder does not have a concept of nested modules

Returns:

an iterator for the modules in this module finder

toString

public String toString()

Overrides:

toString in class Object

close

public void close()

Close this module loader and release all backing files. Note that subsequent load attempts will fail with an error after this method is called.

Specified by:

close in interface AutoCloseable