org.codehaus.plexus
Interface PlexusContainer

All Known Subinterfaces:

MutablePlexusContainer

All Known Implementing Classes:

DefaultPlexusContainer

public interface PlexusContainer

PlexusContainer is the entry-point for loading and accessing other components.

Field Summary

static java.lang.String

ROLE

Method Summary

void	addComponent(java.lang.Object component, java.lang.String role)
void	addComponentDescriptor(ComponentDescriptor componentDescriptor) Adds a component descriptor to this container.
void	addContextValue(java.lang.Object key, java.lang.Object value) Add a key/value pair to this container's Context.
void	addJarRepository(java.io.File repository) Adds a directory of jar resources.
void	addJarResource(java.io.File resource) Adds a jar to this container's ClassRealm - whose components are then discovered (via the various registered ComponentDiscoverer's).
org.codehaus.plexus.classworlds.realm.ClassRealm	createChildRealm(java.lang.String id)
java.util.List<ComponentDescriptor>	discoverComponents(org.codehaus.plexus.classworlds.realm.ClassRealm childRealm, boolean override) Discovers components in the given realm.
void	dispose() Disposes of this container, which in turn disposes all of it's components.
ComponentDescriptor	getComponentDescriptor(java.lang.String role) Returns the ComponentDescriptor with the given component role and the default role hint.
ComponentDescriptor	getComponentDescriptor(java.lang.String role, org.codehaus.plexus.classworlds.realm.ClassRealm realm) Returns the ComponentDescriptor with the given component role and the default role hint.
ComponentDescriptor	getComponentDescriptor(java.lang.String role, java.lang.String roleHint) Returns the ComponentDescriptor with the given component role and hint.
ComponentDescriptor	getComponentDescriptor(java.lang.String role, java.lang.String roleHint, org.codehaus.plexus.classworlds.realm.ClassRealm realm) Returns the ComponentDescriptor with the given component role and hint.
java.util.List<ComponentDescriptor>	getComponentDescriptorList(java.lang.String role) Returns a List of ComponentDescriptors with the given role.
java.util.List<ComponentDescriptor>	getComponentDescriptorList(java.lang.String role, org.codehaus.plexus.classworlds.realm.ClassRealm componentRealm) Returns a List of ComponentDescriptors with the given role.
java.util.List<ComponentDescriptor>	getComponentDescriptorList(java.lang.String role, java.util.List<java.lang.String> roleHints, org.codehaus.plexus.classworlds.realm.ClassRealm componentRealm) Returns a List of ComponentDescriptors with the given role in a requested order driven by roleHints list.
java.util.Map<java.lang.String,ComponentDescriptor>	getComponentDescriptorMap(java.lang.String role) Returns a Map of ComponentDescriptors with the given role, keyed by role-hint.
java.util.Map<java.lang.String,ComponentDescriptor>	getComponentDescriptorMap(java.lang.String role, org.codehaus.plexus.classworlds.realm.ClassRealm componentRealm) Returns a Map of ComponentDescriptors with the given role, keyed by role-hint.
org.codehaus.plexus.classworlds.realm.ClassRealm	getComponentRealm(java.lang.String realmId)
org.codehaus.plexus.classworlds.realm.ClassRealm	getContainerRealm() Returns the Classworld's ClassRealm of this Container, which acts as the default parent for all contained components.
Context	getContext() Returns this container's context.
java.util.Date	getCreationDate() Returns the date this container was created.
Logger	getLogger() Deprecated.
LoggerManager	getLoggerManager()
org.codehaus.plexus.classworlds.realm.ClassRealm	getLookupRealm() Returns the lookup realm for this container, which is either the container realm or the realm set by setLookupRealm(ClassRealm).
org.codehaus.plexus.classworlds.realm.ClassRealm	getLookupRealm(java.lang.Object component) XXX ideally i'd like to place this in a plexus container specific utility class.
java.lang.String	getName() Returns the unique name of this container.
boolean	hasComponent(java.lang.String role) Returns true if this container has the keyed component.
boolean	hasComponent(java.lang.String role, java.lang.String roleHint) Returns true if this container has a component with the given role/role-hint.
java.lang.Object	lookup(java.lang.Class role) Looks up and returns a component object with the given unique key or role.
java.lang.Object	lookup(java.lang.Class role, org.codehaus.plexus.classworlds.realm.ClassRealm realm) Looks up and returns a component object with the given unique key or role.
java.lang.Object	lookup(java.lang.Class role, java.lang.String roleHint) Looks up and returns a component object with the given unique role/role-hint combination.
java.lang.Object	lookup(java.lang.Class role, java.lang.String roleHint, org.codehaus.plexus.classworlds.realm.ClassRealm realm) Looks up and returns a component object with the given unique role/role-hint combination.
java.lang.Object	lookup(java.lang.String role) Looks up and returns a component object with the given unique key or role.
java.lang.Object	lookup(java.lang.String role, org.codehaus.plexus.classworlds.realm.ClassRealm realm) Looks up and returns a component object with the given unique key or role.
java.lang.Object	lookup(java.lang.String role, java.lang.String roleHint) Looks up and returns a component object with the given unique role/role-hint combination.
java.lang.Object	lookup(java.lang.String role, java.lang.String roleHint, org.codehaus.plexus.classworlds.realm.ClassRealm realm) Looks up and returns a component object with the given unique role/role-hint combination.
java.util.List<java.lang.Object>	lookupList(java.lang.Class role) Looks up and returns a List of component objects with the given role.
java.util.List<java.lang.Object>	lookupList(java.lang.Class role, java.util.List<java.lang.String> roleHints) Looks up and returns a List of component objects with the given role.
java.util.List<java.lang.Object>	lookupList(java.lang.String role) Looks up and returns a List of component objects with the given role.
java.util.List<java.lang.Object>	lookupList(java.lang.String role, java.util.List<java.lang.String> roleHints) Looks up and returns a List of component objects with the given role.
java.util.Map<java.lang.String,java.lang.Object>	lookupMap(java.lang.Class role) Looks up and returns a Map of component objects with the given role, keyed by all available role-hints.
java.util.Map<java.lang.String,java.lang.Object>	lookupMap(java.lang.Class role, java.util.List<java.lang.String> roleHints) Looks up and returns a Map of component objects with the given role, keyed by all available role-hints.
java.util.Map<java.lang.String,java.lang.Object>	lookupMap(java.lang.String role) Looks up and returns a Map of component objects with the given role, keyed by all available role-hints.
java.util.Map<java.lang.String,java.lang.Object>	lookupMap(java.lang.String role, java.util.List<java.lang.String> roleHints) Looks up and returns a Map of component objects with the given role, keyed by all available role-hints.
void	registerComponentDiscoveryListener(ComponentDiscoveryListener listener) Adds the listener to this container.
void	release(java.lang.Object component) Releases the component from the container.
void	releaseAll(java.util.List<java.lang.Object> components) Releases all Listed components from the container.
void	releaseAll(java.util.Map<java.lang.String,java.lang.Object> components) Releases all Mapped component values from the container.
void	removeComponentDiscoveryListener(ComponentDiscoveryListener listener) Removes the listener from this container.
void	removeComponentRealm(org.codehaus.plexus.classworlds.realm.ClassRealm componentRealm) Dissociate the realm with the specified id from the container.
void	setLoggerManager(LoggerManager loggerManager)
org.codehaus.plexus.classworlds.realm.ClassRealm	setLookupRealm(org.codehaus.plexus.classworlds.realm.ClassRealm realm) Sets the lookup realm to use for lookup calls that don't have a ClassRealm parameter.
void	setName(java.lang.String name)

Field Detail

ROLE

static final java.lang.String ROLE

Method Detail

getName

java.lang.String getName()

Returns the unique name of this container.

Returns:

the unique name of this container

getCreationDate

java.util.Date getCreationDate()

Returns the date this container was created.

Returns:

the date this container was created

lookup

java.lang.Object lookup(java.lang.String role)
                        throws ComponentLookupException

Looks up and returns a component object with the given unique key or role.

Parameters:

role - a unique key for the desired component

Returns:

a Plexus component object

Throws:

ComponentLookupException

lookup

java.lang.Object lookup(java.lang.String role,
                        org.codehaus.plexus.classworlds.realm.ClassRealm realm)
                        throws ComponentLookupException

Looks up and returns a component object with the given unique key or role.

Parameters:

role - a unique key for the desired component

Returns:

a Plexus component object

Throws:

ComponentLookupException

lookup

java.lang.Object lookup(java.lang.String role,
                        java.lang.String roleHint)
                        throws ComponentLookupException

Looks up and returns a component object with the given unique role/role-hint combination.

Parameters:

role - a non-unique key for the desired component

roleHint - a hint for the desired component implementation

Returns:

a Plexus component object

Throws:

ComponentLookupException

lookup

java.lang.Object lookup(java.lang.String role,
                        java.lang.String roleHint,
                        org.codehaus.plexus.classworlds.realm.ClassRealm realm)
                        throws ComponentLookupException

Looks up and returns a component object with the given unique role/role-hint combination.

Parameters:

role - a non-unique key for the desired component

roleHint - a hint for the desired component implementation

Returns:

a Plexus component object

Throws:

ComponentLookupException

lookup

java.lang.Object lookup(java.lang.Class role)
                        throws ComponentLookupException

Looks up and returns a component object with the given unique key or role.

Parameters:

role - a unique key for the desired component

Returns:

a Plexus component object

Throws:

ComponentLookupException

lookup

java.lang.Object lookup(java.lang.Class role,
                        org.codehaus.plexus.classworlds.realm.ClassRealm realm)
                        throws ComponentLookupException

Looks up and returns a component object with the given unique key or role.

Parameters:

role - a unique key for the desired component

Returns:

a Plexus component object

Throws:

ComponentLookupException

lookup

java.lang.Object lookup(java.lang.Class role,
                        java.lang.String roleHint)
                        throws ComponentLookupException

Looks up and returns a component object with the given unique role/role-hint combination.

Parameters:

role - a non-unique class key for the desired component

roleHint - a hint for the desired component implementation

Returns:

a Plexus component object

Throws:

ComponentLookupException

lookup

java.lang.Object lookup(java.lang.Class role,
                        java.lang.String roleHint,
                        org.codehaus.plexus.classworlds.realm.ClassRealm realm)
                        throws ComponentLookupException

Looks up and returns a component object with the given unique role/role-hint combination.

Parameters:

role - a non-unique class key for the desired component

roleHint - a hint for the desired component implementation

Returns:

a Plexus component object

Throws:

ComponentLookupException

lookupList

java.util.List<java.lang.Object> lookupList(java.lang.String role)
                                            throws ComponentLookupException

Looks up and returns a List of component objects with the given role.

Parameters:

role - a non-unique key for the desired components

Returns:

a List of component objects

Throws:

ComponentLookupException

lookupList

java.util.List<java.lang.Object> lookupList(java.lang.String role,
                                            java.util.List<java.lang.String> roleHints)
                                            throws ComponentLookupException

Looks up and returns a List of component objects with the given role.

Parameters:

role - a non-unique key for the desired components

Returns:

a List of component objects

Throws:

ComponentLookupException

lookupList

java.util.List<java.lang.Object> lookupList(java.lang.Class role)
                                            throws ComponentLookupException

Looks up and returns a List of component objects with the given role.

Parameters:

role - a non-unique class key for the desired components

Returns:

a List of component objects

Throws:

ComponentLookupException

lookupList

java.util.List<java.lang.Object> lookupList(java.lang.Class role,
                                            java.util.List<java.lang.String> roleHints)
                                            throws ComponentLookupException

Looks up and returns a List of component objects with the given role.

Parameters:

role - a non-unique class key for the desired components

Returns:

a List of component objects

Throws:

ComponentLookupException

lookupMap

java.util.Map<java.lang.String,java.lang.Object> lookupMap(java.lang.String role)
                                                           throws ComponentLookupException

Looks up and returns a Map of component objects with the given role, keyed by all available role-hints.

Parameters:

role - a non-unique key for the desired components

Returns:

a Map of component objects

Throws:

ComponentLookupException

lookupMap

java.util.Map<java.lang.String,java.lang.Object> lookupMap(java.lang.String role,
                                                           java.util.List<java.lang.String> roleHints)
                                                           throws ComponentLookupException

Looks up and returns a Map of component objects with the given role, keyed by all available role-hints.

Parameters:

role - a non-unique key for the desired components

Returns:

a Map of component objects

Throws:

ComponentLookupException

lookupMap

java.util.Map<java.lang.String,java.lang.Object> lookupMap(java.lang.Class role)
                                                           throws ComponentLookupException

Looks up and returns a Map of component objects with the given role, keyed by all available role-hints.

Parameters:

role - a non-unique class key for the desired components

Returns:

a Map of component objects

Throws:

ComponentLookupException

lookupMap

java.util.Map<java.lang.String,java.lang.Object> lookupMap(java.lang.Class role,
                                                           java.util.List<java.lang.String> roleHints)
                                                           throws ComponentLookupException

Looks up and returns a Map of component objects with the given role, keyed by all available role-hints.

Parameters:

role - a non-unique class key for the desired components

Returns:

a Map of component objects

Throws:

ComponentLookupException

getComponentDescriptor

ComponentDescriptor getComponentDescriptor(java.lang.String role)

Returns the ComponentDescriptor with the given component role and the default role hint. Searches up the hierarchy until one is found, null if none is found.

Parameters:

role - a unique role for the desired component's descriptor

Returns:

the ComponentDescriptor with the given component role

getComponentDescriptor

ComponentDescriptor getComponentDescriptor(java.lang.String role,
                                           java.lang.String roleHint)

Returns the ComponentDescriptor with the given component role and hint. Searches up the hierarchy until one is found, null if none is found.

Parameters:

role - a unique role for the desired component's descriptor

roleHint - a hint showing which implementation should be used

Returns:

the ComponentDescriptor with the given component role

getComponentDescriptor

ComponentDescriptor getComponentDescriptor(java.lang.String role,
                                           org.codehaus.plexus.classworlds.realm.ClassRealm realm)

Returns the ComponentDescriptor with the given component role and the default role hint. Searches up the hierarchy until one is found, null if none is found.

Parameters:

role - a unique role for the desired component's descriptor

realm - The class realm to search

Returns:

the ComponentDescriptor with the given component role

getComponentDescriptor

ComponentDescriptor getComponentDescriptor(java.lang.String role,
                                           java.lang.String roleHint,
                                           org.codehaus.plexus.classworlds.realm.ClassRealm realm)

Returns the ComponentDescriptor with the given component role and hint. Searches up the hierarchy until one is found, null if none is found.

Parameters:

role - a unique role for the desired component's descriptor

roleHint - a hint showing which implementation should be used

realm - The class realm to search

Returns:

the ComponentDescriptor with the given component role

getComponentDescriptorMap

java.util.Map<java.lang.String,ComponentDescriptor> getComponentDescriptorMap(java.lang.String role)

Returns a Map of ComponentDescriptors with the given role, keyed by role-hint. Searches up the hierarchy until all are found, an empty Map if none are found.

Parameters:

role - a non-unique key for the desired components

Returns:

a Map of component descriptors keyed by role-hint

getComponentDescriptorMap

java.util.Map<java.lang.String,ComponentDescriptor> getComponentDescriptorMap(java.lang.String role,
                                                                              org.codehaus.plexus.classworlds.realm.ClassRealm componentRealm)

Returns a Map of ComponentDescriptors with the given role, keyed by role-hint. Searches up the hierarchy until all are found, an empty Map if none are found.

Parameters:

role - a non-unique key for the desired components

Returns:

a Map of component descriptors keyed by role-hint

getComponentDescriptorList

java.util.List<ComponentDescriptor> getComponentDescriptorList(java.lang.String role)

Returns a List of ComponentDescriptors with the given role. Searches up the hierarchy until all are found, an empty List if none are found.

Parameters:

role - a non-unique key for the desired components

Returns:

a List of component descriptors

getComponentDescriptorList

java.util.List<ComponentDescriptor> getComponentDescriptorList(java.lang.String role,
                                                               org.codehaus.plexus.classworlds.realm.ClassRealm componentRealm)

Returns a List of ComponentDescriptors with the given role. Searches up the hierarchy until all are found, an empty List if none are found.

Parameters:

role - a non-unique key for the desired components

Returns:

a List of component descriptors

getComponentDescriptorList

java.util.List<ComponentDescriptor> getComponentDescriptorList(java.lang.String role,
                                                               java.util.List<java.lang.String> roleHints,
                                                               org.codehaus.plexus.classworlds.realm.ClassRealm componentRealm)

Returns a List of ComponentDescriptors with the given role in a requested order driven by roleHints list. Searches up the hierarchy until all are found, an empty List if none are found.

Parameters:

role - a non-unique key for the desired components

Returns:

a List of component descriptors

addComponentDescriptor

void addComponentDescriptor(ComponentDescriptor componentDescriptor)
                            throws ComponentRepositoryException

Adds a component descriptor to this container. componentDescriptor should have realmId set.

Parameters:

componentDescriptor -

Throws:

ComponentRepositoryException

release

void release(java.lang.Object component)
             throws ComponentLifecycleException

Releases the component from the container. This is dependant upon how the implementation manages the component, but usually enacts some standard lifecycle shutdown procedure on the component. In every case, the component is no longer accessible from the container (unless another is created).

Parameters:

component - the plexus component object to release

Throws:

ComponentLifecycleException

releaseAll

void releaseAll(java.util.Map<java.lang.String,java.lang.Object> components)
                throws ComponentLifecycleException

Releases all Mapped component values from the container.

Parameters:

components - Map of plexus component objects to release

Throws:

ComponentLifecycleException

See Also:

release( Object component )

releaseAll

void releaseAll(java.util.List<java.lang.Object> components)
                throws ComponentLifecycleException

Releases all Listed components from the container.

Parameters:

components - List of plexus component objects to release

Throws:

ComponentLifecycleException

See Also:

release( Object component )

hasComponent

boolean hasComponent(java.lang.String role)

Returns true if this container has the keyed component.

Parameters:

role -

Returns:

true if this container has the keyed component

hasComponent

boolean hasComponent(java.lang.String role,
                     java.lang.String roleHint)

Returns true if this container has a component with the given role/role-hint.

Parameters:

role -

roleHint -

Returns:

true if this container has a component with the given role/role-hint

dispose

void dispose()

Disposes of this container, which in turn disposes all of it's components. This container should also remove itself from the container hierarchy.

addContextValue

void addContextValue(java.lang.Object key,
                     java.lang.Object value)

Add a key/value pair to this container's Context.

Parameters:

key - any unique object valid to the Context's implementation

value - any object valid to the Context's implementation

getContext

Context getContext()

Returns this container's context. A Context is a simple data store used to hold values which may alter the execution of the Container.

Returns:

this container's context.

getContainerRealm

org.codehaus.plexus.classworlds.realm.ClassRealm getContainerRealm()

Returns the Classworld's ClassRealm of this Container, which acts as the default parent for all contained components.

Returns:

the ClassRealm of this Container

registerComponentDiscoveryListener

void registerComponentDiscoveryListener(ComponentDiscoveryListener listener)

Adds the listener to this container. ComponentDiscoveryListeners have the ability to respond to various ComponentDiscoverer events.

Parameters:

listener - A listener which responds to differnet ComponentDiscoveryEvents

removeComponentDiscoveryListener

void removeComponentDiscoveryListener(ComponentDiscoveryListener listener)

Removes the listener from this container.

Parameters:

listener - A listener to remove

discoverComponents

java.util.List<ComponentDescriptor> discoverComponents(org.codehaus.plexus.classworlds.realm.ClassRealm childRealm,
                                                       boolean override)
                                                       throws PlexusConfigurationException,
                                                              ComponentRepositoryException

Discovers components in the given realm.

Parameters:

childRealm -

override - wheter to override/merge any conflicting components, where the new component takes precedence.

Returns:

Throws:

PlexusConfigurationException

ComponentRepositoryException

addJarRepository

void addJarRepository(java.io.File repository)

Adds a directory of jar resources.

Parameters:

repository - a directory containing JAR files

See Also:

addJarResource(File)

addJarResource

void addJarResource(java.io.File resource)
                    throws PlexusContainerException

Adds a jar to this container's ClassRealm - whose components are then discovered (via the various registered ComponentDiscoverer's).

Parameters:

resource - a JAR file

Throws:

PlexusContainerException

setLoggerManager

void setLoggerManager(LoggerManager loggerManager)

getLoggerManager

LoggerManager getLoggerManager()

getLogger

Logger getLogger()

Deprecated.

setName

void setName(java.lang.String name)

createChildRealm

org.codehaus.plexus.classworlds.realm.ClassRealm createChildRealm(java.lang.String id)

getComponentRealm

org.codehaus.plexus.classworlds.realm.ClassRealm getComponentRealm(java.lang.String realmId)

removeComponentRealm

void removeComponentRealm(org.codehaus.plexus.classworlds.realm.ClassRealm componentRealm)
                          throws PlexusContainerException

Dissociate the realm with the specified id from the container. This will remove all components contained in the realm from the component repository.

Parameters:

componentRealm - Realm to remove from the container.

Throws:

PlexusContainerException

getLookupRealm

org.codehaus.plexus.classworlds.realm.ClassRealm getLookupRealm()

Returns the lookup realm for this container, which is either the container realm or the realm set by setLookupRealm(ClassRealm).

setLookupRealm

org.codehaus.plexus.classworlds.realm.ClassRealm setLookupRealm(org.codehaus.plexus.classworlds.realm.ClassRealm realm)

Sets the lookup realm to use for lookup calls that don't have a ClassRealm parameter.

Parameters:

realm - the new realm to use.

Returns:

The previous lookup realm. It is adviced to set it back once the old-style lookups have completed.

getLookupRealm

org.codehaus.plexus.classworlds.realm.ClassRealm getLookupRealm(java.lang.Object component)

XXX ideally i'd like to place this in a plexus container specific utility class. Utility method to retrieve the lookup realm for a component instance. If the component's classloader is a ClassRealm, that realm is returned, otherwise the result of getLookupRealm is returned.

Parameters:

component -

Returns:

addComponent

void addComponent(java.lang.Object component,
                  java.lang.String role)
                  throws ComponentRepositoryException

Throws:

ComponentRepositoryException