org.apache.activemq.jndi
Class ReadOnlyContext
java.lang.Object
org.apache.activemq.jndi.ReadOnlyContext
- All Implemented Interfaces:
- Serializable, Context
- Direct Known Subclasses:
- LazyCreateContext
public class ReadOnlyContext
- extends Object
- implements Context, Serializable
A read-only Context
This version assumes it and all its subcontext are read-only and any attempt
to modify (e.g. through bind) will result in an OperationNotSupportedException.
Each Context in the tree builds a cache of the entries in all sub-contexts
to optimise the performance of lookup.
This implementation is intended to optimise the performance of lookup(String)
to about the level of a HashMap get. It has been observed that the scheme
resolution phase performed by the JVM takes considerably longer, so for
optimum performance lookups should be coded like:
Context componentContext = (Context)new InitialContext().lookup("java:comp");
String envEntry = (String) componentContext.lookup("env/myEntry");
String envEntry2 = (String) componentContext.lookup("env/myEntry2");
- Version:
- $Revision: 1.2 $ $Date: 2005/08/27 03:52:39 $
- See Also:
- Serialized Form
Fields inherited from interface javax.naming.Context |
APPLET, AUTHORITATIVE, BATCHSIZE, DNS_URL, INITIAL_CONTEXT_FACTORY, LANGUAGE, OBJECT_FACTORIES, PROVIDER_URL, REFERRAL, SECURITY_AUTHENTICATION, SECURITY_CREDENTIALS, SECURITY_PRINCIPAL, SECURITY_PROTOCOL, STATE_FACTORIES, URL_PKG_PREFIXES |
Method Summary |
Object |
addToEnvironment(String propName,
Object propVal)
|
void |
bind(Name name,
Object obj)
|
void |
bind(String name,
Object obj)
|
void |
close()
|
Name |
composeName(Name name,
Name prefix)
|
String |
composeName(String name,
String prefix)
|
Context |
createSubcontext(Name name)
|
Context |
createSubcontext(String name)
|
void |
destroySubcontext(Name name)
|
void |
destroySubcontext(String name)
|
void |
freeze()
|
Hashtable |
getEnvironment()
|
String |
getNameInNamespace()
|
NameParser |
getNameParser(Name name)
|
NameParser |
getNameParser(String name)
|
protected Map |
internalBind(String name,
Object value)
internalBind is intended for use only during setup or possibly by suitably synchronized superclasses. |
NamingEnumeration |
list(Name name)
|
NamingEnumeration |
list(String name)
|
NamingEnumeration |
listBindings(Name name)
|
NamingEnumeration |
listBindings(String name)
|
Object |
lookup(Name name)
|
Object |
lookup(String name)
|
Object |
lookupLink(Name name)
|
Object |
lookupLink(String name)
|
protected ReadOnlyContext |
newContext()
|
void |
rebind(Name name,
Object obj)
|
void |
rebind(String name,
Object obj)
|
Object |
removeFromEnvironment(String propName)
|
void |
rename(Name oldName,
Name newName)
|
void |
rename(String oldName,
String newName)
|
void |
unbind(Name name)
|
void |
unbind(String name)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
nameParser
protected static final NameParser nameParser
environment
protected final Hashtable environment
bindings
protected final Map bindings
treeBindings
protected final Map treeBindings
SEPARATOR
public static final String SEPARATOR
- See Also:
- Constant Field Values
ReadOnlyContext
public ReadOnlyContext()
ReadOnlyContext
public ReadOnlyContext(Hashtable env)
ReadOnlyContext
public ReadOnlyContext(Hashtable environment,
Map bindings)
ReadOnlyContext
public ReadOnlyContext(Hashtable environment,
Map bindings,
String nameInNamespace)
ReadOnlyContext
protected ReadOnlyContext(ReadOnlyContext clone,
Hashtable env)
ReadOnlyContext
protected ReadOnlyContext(ReadOnlyContext clone,
Hashtable env,
String nameInNamespace)
freeze
public void freeze()
internalBind
protected Map internalBind(String name,
Object value)
throws NamingException
- internalBind is intended for use only during setup or possibly by suitably synchronized superclasses.
It binds every possible lookup into a map in each context. To do this, each context
strips off one name segment and if necessary creates a new context for it. Then it asks that context
to bind the remaining name. It returns a map containing all the bindings from the next context, plus
the context it just created (if it in fact created it). (the names are suitably extended by the segment
originally lopped off).
- Parameters:
name
- value
-
- Returns:
-
- Throws:
NamingException
newContext
protected ReadOnlyContext newContext()
addToEnvironment
public Object addToEnvironment(String propName,
Object propVal)
throws NamingException
- Specified by:
addToEnvironment
in interface Context
- Throws:
NamingException
getEnvironment
public Hashtable getEnvironment()
throws NamingException
- Specified by:
getEnvironment
in interface Context
- Throws:
NamingException
removeFromEnvironment
public Object removeFromEnvironment(String propName)
throws NamingException
- Specified by:
removeFromEnvironment
in interface Context
- Throws:
NamingException
lookup
public Object lookup(String name)
throws NamingException
- Specified by:
lookup
in interface Context
- Throws:
NamingException
lookup
public Object lookup(Name name)
throws NamingException
- Specified by:
lookup
in interface Context
- Throws:
NamingException
lookupLink
public Object lookupLink(String name)
throws NamingException
- Specified by:
lookupLink
in interface Context
- Throws:
NamingException
composeName
public Name composeName(Name name,
Name prefix)
throws NamingException
- Specified by:
composeName
in interface Context
- Throws:
NamingException
composeName
public String composeName(String name,
String prefix)
throws NamingException
- Specified by:
composeName
in interface Context
- Throws:
NamingException
list
public NamingEnumeration list(String name)
throws NamingException
- Specified by:
list
in interface Context
- Throws:
NamingException
listBindings
public NamingEnumeration listBindings(String name)
throws NamingException
- Specified by:
listBindings
in interface Context
- Throws:
NamingException
lookupLink
public Object lookupLink(Name name)
throws NamingException
- Specified by:
lookupLink
in interface Context
- Throws:
NamingException
list
public NamingEnumeration list(Name name)
throws NamingException
- Specified by:
list
in interface Context
- Throws:
NamingException
listBindings
public NamingEnumeration listBindings(Name name)
throws NamingException
- Specified by:
listBindings
in interface Context
- Throws:
NamingException
bind
public void bind(Name name,
Object obj)
throws NamingException
- Specified by:
bind
in interface Context
- Throws:
NamingException
bind
public void bind(String name,
Object obj)
throws NamingException
- Specified by:
bind
in interface Context
- Throws:
NamingException
close
public void close()
throws NamingException
- Specified by:
close
in interface Context
- Throws:
NamingException
createSubcontext
public Context createSubcontext(Name name)
throws NamingException
- Specified by:
createSubcontext
in interface Context
- Throws:
NamingException
createSubcontext
public Context createSubcontext(String name)
throws NamingException
- Specified by:
createSubcontext
in interface Context
- Throws:
NamingException
destroySubcontext
public void destroySubcontext(Name name)
throws NamingException
- Specified by:
destroySubcontext
in interface Context
- Throws:
NamingException
destroySubcontext
public void destroySubcontext(String name)
throws NamingException
- Specified by:
destroySubcontext
in interface Context
- Throws:
NamingException
getNameInNamespace
public String getNameInNamespace()
throws NamingException
- Specified by:
getNameInNamespace
in interface Context
- Throws:
NamingException
getNameParser
public NameParser getNameParser(Name name)
throws NamingException
- Specified by:
getNameParser
in interface Context
- Throws:
NamingException
getNameParser
public NameParser getNameParser(String name)
throws NamingException
- Specified by:
getNameParser
in interface Context
- Throws:
NamingException
rebind
public void rebind(Name name,
Object obj)
throws NamingException
- Specified by:
rebind
in interface Context
- Throws:
NamingException
rebind
public void rebind(String name,
Object obj)
throws NamingException
- Specified by:
rebind
in interface Context
- Throws:
NamingException
rename
public void rename(Name oldName,
Name newName)
throws NamingException
- Specified by:
rename
in interface Context
- Throws:
NamingException
rename
public void rename(String oldName,
String newName)
throws NamingException
- Specified by:
rename
in interface Context
- Throws:
NamingException
unbind
public void unbind(Name name)
throws NamingException
- Specified by:
unbind
in interface Context
- Throws:
NamingException
unbind
public void unbind(String name)
throws NamingException
- Specified by:
unbind
in interface Context
- Throws:
NamingException
Copyright © 2011 Apache Software Foundation. All Rights Reserved.