Top Description Fields Constructors Methods
org.apache.avalon.framework.service

public Class DefaultServiceManager

extends Object
implements ServiceManager
Class Inheritance
All Implemented Interfaces
org.apache.avalon.framework.service.ServiceManager
Imports
java.util.HashMap, .Iterator, .Map
This class is a static implementation of a ServiceManager. Allow ineritance and extension so you can generate a tree of ServiceManager each defining Object scope.
Author
Avalon Development Team
Version
$Id: DefaultServiceManager.java 506231 2007-02-12 02:36:54Z crossley $

Field Summary

Modifier and TypeField and Description
private final HashMap<K, V>
m_objects

private final ServiceManager
m_parent

private boolean
m_readOnly

Constructor Summary

AccessConstructor and Description
public
DefaultServiceManager()

Construct ServiceManager with no parent.

public
DefaultServiceManager(final ServiceManager
this ServiceManager's parent
parent)

Construct ServiceManager with specified parent.

Method Summary

Modifier and TypeMethod and Description
protected final void
checkWriteable()

Checks if this ServiceManager is writeable.

protected final Map<K, V>

Returns:

the object map
getObjectMap()

Helper method for subclasses to retrieve object map.

protected final ServiceManager

Returns:

the parent ServiceManager
getParent()

Helper method for subclasses to retrieve parent.

public boolean

Returns:

True if the object exists, False if it does not.
hasService(final String
a string identifying the key to check.
key)

Implements org.apache.avalon.framework.service.ServiceManager.hasService.

Check to see if a Object exists for a key.
public Object

Returns:

the Object
lookup(final String
the key
key)

Implements org.apache.avalon.framework.service.ServiceManager.lookup.

Retrieve Object by key from ServiceManager.
public void
makeReadOnly()

Makes this ServiceManager read-only.

public void
put(final String
the object's key
key, final Object
an Object value
object)

Place Object into ServiceManager.

public void
release(Object
The Object to release.
object)

Implements org.apache.avalon.framework.service.ServiceManager.release.

Release the Object.
public String

Returns:

the description of this ServiceManager
toString()

Overrides java.lang.Object.toString.

Build a human readable representation of this ServiceManager.
Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAllwaitwaitwait

Field Detail

m_objectsback to summary
private final HashMap<K, V> m_objects
m_parentback to summary
private final ServiceManager m_parent
m_readOnlyback to summary
private boolean m_readOnly

Constructor Detail

DefaultServiceManagerback to summary
public DefaultServiceManager()

Construct ServiceManager with no parent.

DefaultServiceManagerback to summary
public DefaultServiceManager(final ServiceManager parent)

Construct ServiceManager with specified parent.

Parameters
parent:ServiceManager

this ServiceManager's parent

Method Detail

checkWriteableback to summary
protected final void checkWriteable() throws IllegalStateException

Checks if this ServiceManager is writeable.

Exceptions
IllegalStateException:
if this ServiceManager is read-only
getObjectMapback to summary
protected final Map<K, V> getObjectMap()

Helper method for subclasses to retrieve object map.

Returns:Map<K, V>

the object map

getParentback to summary
protected final ServiceManager getParent()

Helper method for subclasses to retrieve parent.

Returns:ServiceManager

the parent ServiceManager

hasServiceback to summary
public boolean hasService(final String key)

Implements org.apache.avalon.framework.service.ServiceManager.hasService.

Check to see if a Object exists for a key.

Parameters
key:String

a string identifying the key to check.

Returns:boolean

True if the object exists, False if it does not.

lookupback to summary
public Object lookup(final String key) throws ServiceException

Implements org.apache.avalon.framework.service.ServiceManager.lookup.

Retrieve Object by key from ServiceManager.

Parameters
key:String

the key

Returns:Object

the Object

Exceptions
ServiceException:
if an error occurs
makeReadOnlyback to summary
public void makeReadOnly()

Makes this ServiceManager read-only.

putback to summary
public void put(final String key, final Object object)

Place Object into ServiceManager.

Parameters
key:String

the object's key

object:Object

an Object value

releaseback to summary
public void release(Object object)

Implements org.apache.avalon.framework.service.ServiceManager.release.

Release the Object.

Parameters
object:Object

The Object to release.

toStringback to summary
public String toString()

Overrides java.lang.Object.toString.

Build a human readable representation of this ServiceManager.

Returns:String

the description of this ServiceManager