## org.mortbay.naming
Class NamingContext

    java.lang.Object
      org.mortbay.naming.NamingContext

All Implemented Interfaces:
  Cloneable, Context

    public class NamingContext

extends Object
implements Context, Cloneable

NamingContext

Implementation of Context interface.

#### Notes

All Names are expected to be Compound, not Composite.

#### Usage

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    Nested Class Summary

     class
    NamingContext.BindingEnumeration

              BindingEnumeration

     class
    NamingContext.NameEnumeration

              NameEnumeration

    Field Summary

    protected  Hashtable
    _bindings

    protected  Hashtable
    _env

    protected  String
    _name

    protected  Context
    _parent

    protected  NameParser
    _parser

    static Enumeration
    EMPTY_ENUM

    static String
    LOCK_PROPERTY

    static String
    UNLOCK_PROPERTY

    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

    Constructor Summary

    NamingContext()

              Constructor

    NamingContext(Hashtable env)

              Creates a new NamingContext instance.

    NamingContext(Hashtable env,
                  String name,
                  Context parent,
                  NameParser parser)

              Constructor

    Method Summary

    protected  void
    addBinding(Name name,
               Object obj)

              Add a name to object binding to this Context.

     Object
    addToEnvironment(String propName,
                     Object propVal)

              Add an environment setting to this Context

     void
    bind(Name name,
         Object obj)

              Bind a name to an object

     void
    bind(String name,
         Object obj)

              Bind a name (as a String) to an object

     Object
    clone()

              Clone this NamingContext

     void
    close()

              Do nothing

     Name
    composeName(Name name,
                Name prefix)

              Join two names together.

     String
    composeName(String name,
                String prefix)

              Join two names together.

     Context
    createSubcontext(Name name)

              Create a context as a child of this one

     Context
    createSubcontext(String name)

              Create a Context as a child of this one

     void
    destroySubcontext(Name name)

              Not supported

     void
    destroySubcontext(String name)

              Not supported

    protected  Binding
    getBinding(Name name)

              Get a name to object binding from this Context

    protected  Binding
    getBinding(String name)

              Get a name to object binding from this Context

     Hashtable
    getEnvironment()

              Get the environment of this Context.

     String
    getName()

              Getter for _name

     String
    getNameInNamespace()

              Get the full name of this Context node
     by visiting it's ancestors back to root.

     NameParser
    getNameParser(Name name)

              Return a NameParser for this Context.

     NameParser
    getNameParser(String name)

              Return a NameParser for this Context.

     Context
    getParent()

              Getter for _parent

     NamingEnumeration
    list(Name name)

              List all names bound at Context named by Name

     NamingEnumeration
    list(String name)

              List all names bound at Context named by Name

     NamingEnumeration
    listBindings(Name name)

              List all Bindings present at Context named by Name

     NamingEnumeration
    listBindings(String name)

              List all Bindings at Name

     Object
    lookup(Name name)

              Lookup a binding by name

     Object
    lookup(String name)

              Lookup binding of an object by name

     Object
    lookupLink(Name name)

              Lookup link bound to name

     Object
    lookupLink(String name)

              Lookup link bound to name

     void
    rebind(Name name,
           Object obj)

              Overwrite or create a binding

     void
    rebind(String name,
           Object obj)

              Overwrite or create a binding from Name to Object

    protected  void
    removeBinding(Name name)

     Object
    removeFromEnvironment(String propName)

              Remove a property from this Context's environment.

     void
    rename(Name oldName,
           Name newName)

              Not supported

     void
    rename(String oldName,
           String newName)

              Not supported

     void
    setNameParser(NameParser parser)

              Setter for _parser

     Name
    toCanonicalName(Name name)

              Remove leading or trailing empty components from
     name.

     void
    unbind(Name name)

              Not supported.

     void
    unbind(String name)

              Not supported.

    Methods inherited from class java.lang.Object

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

    Field Detail

    LOCK_PROPERTY

    public static final String LOCK_PROPERTY

    See Also:Constant Field Values

    UNLOCK_PROPERTY

    public static final String UNLOCK_PROPERTY

    See Also:Constant Field Values

    EMPTY_ENUM

    public static final Enumeration EMPTY_ENUM

    _parent

    protected Context _parent

    _name

    protected String _name

    _env

    protected Hashtable _env

    _bindings

    protected Hashtable _bindings

    _parser

    protected NameParser _parser

    Constructor Detail

    NamingContext

    public NamingContext(Hashtable env,
                         String name,
                         Context parent,
                         NameParser parser)

    Constructor

    Parameters:env - environment propertiesname - relative name of this contextparent - immediate ancestor Context (can be null)parser - NameParser for this Context

    NamingContext

    public NamingContext(Hashtable env)

    Creates a new NamingContext instance.

    Parameters:env - a Hashtable value

    NamingContext

    public NamingContext()

    Constructor

    Method Detail

    clone

    public Object clone()
                 throws CloneNotSupportedException

    Clone this NamingContext

    Overrides:clone in class Object

    Returns:copy of this NamingContext
    Throws:
    CloneNotSupportedException - if an error occurs

    getName

    public String getName()

    Getter for _name

    Returns:name of this Context (relative, not absolute)

    getParent

    public Context getParent()

    Getter for _parent

    Returns:parent Context

    setNameParser

    public void setNameParser(NameParser parser)

    Setter for _parser

    bind

    public void bind(Name name,
                     Object obj)
              throws NamingException

    Bind a name to an object

    Specified by:bind in interface Context

    Parameters:name - Name of the objectobj - object to bind
    Throws:
    NamingException - if an error occurs

    bind

    public void bind(String name,
                     Object obj)
              throws NamingException

    Bind a name (as a String) to an object

    Specified by:bind in interface Context

    Parameters:name - a String valueobj - an Object value
    Throws:
    NamingException - if an error occurs

    createSubcontext

    public Context createSubcontext(Name name)
                             throws NamingException

    Create a context as a child of this one

    Specified by:createSubcontext in interface Context

    Parameters:name - a Name value
    Returns:a Context value
    Throws:
    NamingException - if an error occurs

    createSubcontext

    public Context createSubcontext(String name)
                             throws NamingException

    Create a Context as a child of this one

    Specified by:createSubcontext in interface Context

    Parameters:name - a String value
    Returns:a Context value
    Throws:
    NamingException - if an error occurs

    destroySubcontext

    public void destroySubcontext(String name)
                           throws NamingException

    Not supported

    Specified by:destroySubcontext in interface Context

    Parameters:name - name of subcontext to remove
    Throws:
    NamingException - if an error occurs

    destroySubcontext

    public void destroySubcontext(Name name)
                           throws NamingException

    Not supported

    Specified by:destroySubcontext in interface Context

    Parameters:name - name of subcontext to remove
    Throws:
    NamingException - if an error occurs

    lookup

    public Object lookup(Name name)
                  throws NamingException

    Lookup a binding by name

    Specified by:lookup in interface Context

    Parameters:name - name of bound object
    Throws:
    NamingException - if an error occurs

    lookup

    public Object lookup(String name)
                  throws NamingException

    Lookup binding of an object by name

    Specified by:lookup in interface Context

    Parameters:name - name of bound object
    Returns:object bound to name
    Throws:
    NamingException - if an error occurs

    lookupLink

    public Object lookupLink(Name name)
                      throws NamingException

    Lookup link bound to name

    Specified by:lookupLink in interface Context

    Parameters:name - name of link binding
    Returns:LinkRef or plain object bound at name
    Throws:
    NamingException - if an error occurs

    lookupLink

    public Object lookupLink(String name)
                      throws NamingException

    Lookup link bound to name

    Specified by:lookupLink in interface Context

    Parameters:name - name of link binding
    Returns:LinkRef or plain object bound at name
    Throws:
    NamingException - if an error occurs

    list

    public NamingEnumeration list(Name name)
                           throws NamingException

    List all names bound at Context named by Name

    Specified by:list in interface Context

    Parameters:name - a Name value
    Returns:a NamingEnumeration value
    Throws:
    NamingException - if an error occurs

    list

    public NamingEnumeration list(String name)
                           throws NamingException

    List all names bound at Context named by Name

    Specified by:list in interface Context

    Parameters:name - a Name value
    Returns:a NamingEnumeration value
    Throws:
    NamingException - if an error occurs

    listBindings

    public NamingEnumeration listBindings(Name name)
                                   throws NamingException

    List all Bindings present at Context named by Name

    Specified by:listBindings in interface Context

    Parameters:name - a Name value
    Returns:a NamingEnumeration value
    Throws:
    NamingException - if an error occurs

    listBindings

    public NamingEnumeration listBindings(String name)
                                   throws NamingException

    List all Bindings at Name

    Specified by:listBindings in interface Context

    Parameters:name - a String value
    Returns:a NamingEnumeration value
    Throws:
    NamingException - if an error occurs

    rebind

    public void rebind(Name name,
                       Object obj)
                throws NamingException

    Overwrite or create a binding

    Specified by:rebind in interface Context

    Parameters:name - a Name valueobj - an Object value
    Throws:
    NamingException - if an error occurs

    rebind

    public void rebind(String name,
                       Object obj)
                throws NamingException

    Overwrite or create a binding from Name to Object

    Specified by:rebind in interface Context

    Parameters:name - a String valueobj - an Object value
    Throws:
    NamingException - if an error occurs

    unbind

    public void unbind(String name)
                throws NamingException

    Not supported.

    Specified by:unbind in interface Context

    Parameters:name - a String value
    Throws:
    NamingException - if an error occurs

    unbind

    public void unbind(Name name)
                throws NamingException

    Not supported.

    Specified by:unbind in interface Context

    Parameters:name - a String value
    Throws:
    NamingException - if an error occurs

    rename

    public void rename(Name oldName,
                       Name newName)
                throws NamingException

    Not supported

    Specified by:rename in interface Context

    Parameters:oldName - a Name valuenewName - a Name value
    Throws:
    NamingException - if an error occurs

    rename

    public void rename(String oldName,
                       String newName)
                throws NamingException

    Not supported

    Specified by:rename in interface Context

    Parameters:oldName - a Name valuenewName - a Name value
    Throws:
    NamingException - if an error occurs

    composeName

    public Name composeName(Name name,
                            Name prefix)
                     throws NamingException

    Join two names together. These are treated as
     CompoundNames.

    Specified by:composeName in interface Context

    Parameters:name - a Name valueprefix - a Name value
    Returns:a Name value
    Throws:
    NamingException - if an error occurs

    composeName

    public String composeName(String name,
                              String prefix)
                       throws NamingException

    Join two names together. These are treated as
     CompoundNames.

    Specified by:composeName in interface Context

    Parameters:name - a Name valueprefix - a Name value
    Returns:a Name value
    Throws:
    NamingException - if an error occurs

    close

    public void close()
               throws NamingException

    Do nothing

    Specified by:close in interface Context

    Throws:
    NamingException - if an error occurs

    getNameParser

    public NameParser getNameParser(Name name)

    Return a NameParser for this Context.

    Specified by:getNameParser in interface Context

    Parameters:name - a Name value
    Returns:a NameParser value

    getNameParser

    public NameParser getNameParser(String name)

    Return a NameParser for this Context.

    Specified by:getNameParser in interface Context

    Parameters:name - a Name value
    Returns:a NameParser value

    getNameInNamespace

    public String getNameInNamespace()
                              throws NamingException

    Get the full name of this Context node
     by visiting it's ancestors back to root.

     NOTE: if this Context has a URL namespace then
     the URL prefix will be missing

    Specified by:getNameInNamespace in interface Context

    Returns:the full name of this Context
    Throws:
    NamingException - if an error occurs

    addToEnvironment

    public Object addToEnvironment(String propName,
                                   Object propVal)
                            throws NamingException

    Add an environment setting to this Context

    Specified by:addToEnvironment in interface Context

    Parameters:propName - name of the property to addpropVal - value of the property to add
    Returns:propVal or previous value of the property
    Throws:
    NamingException - if an error occurs

    removeFromEnvironment

    public Object removeFromEnvironment(String propName)
                                 throws NamingException

    Remove a property from this Context's environment.

    Specified by:removeFromEnvironment in interface Context

    Parameters:propName - name of property to remove
    Returns:value of property or null if it didn't exist
    Throws:
    NamingException - if an error occurs

    getEnvironment

    public Hashtable getEnvironment()

    Get the environment of this Context.

    Specified by:getEnvironment in interface Context

    Returns:a copy of the environment of this Context.

    addBinding

    protected void addBinding(Name name,
                              Object obj)

    Add a name to object binding to this Context.

    Parameters:name - a Name valueobj - an Object value

    getBinding

    protected Binding getBinding(Name name)

    Get a name to object binding from this Context

    Parameters:name - a Name value
    Returns:a Binding value

    getBinding

    protected Binding getBinding(String name)

    Get a name to object binding from this Context

    Parameters:name - as a String
    Returns:null or the Binding

    removeBinding

    protected void removeBinding(Name name)

    toCanonicalName

    public Name toCanonicalName(Name name)

    Remove leading or trailing empty components from
     name. Eg "/comp/env/" -> "comp/env"

    Parameters:name - the name to normalize
    Returns:normalized name

    Copyright © 2007 Mort Bay Consulting. All Rights Reserved.