NamingContext (Apache Tomcat 8.0.15 API Documentation)

java.lang.Object
- org.apache.naming.NamingContext

All Implemented Interfaces:

Context
```
public class NamingContext
extends Object
implements Context
```
Catalina JNDI Context implementation.

Author:

Remy Maucherat

Field Summary

Fields
Modifier and Type	Field and Description
`protected HashMap<String,NamingEntry>`	`bindings` Bindings in this Context.
`protected Hashtable<String,Object>`	`env` Environment.
`protected String`	`name` Name of the associated Catalina Context.
`protected static NameParser`	`nameParser` Name parser for this context.
`protected static StringManager`	`sm` The string manager for this package.

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

Constructors
Constructor and Description
`NamingContext(Hashtable<String,Object> env, String name)` Builds a naming context using the given environment.
`NamingContext(Hashtable<String,Object> env, String name, HashMap<String,NamingEntry> bindings)` Builds a naming context using the given environment.

Method Summary

Methods
Modifier and Type	Method and Description
`Object`	`addToEnvironment(String propName, Object propVal)` Adds a new environment property to the environment of this context.
`void`	`bind(Name name, Object obj)` Binds a name to an object.
`protected void`	`bind(Name name, Object obj, boolean rebind)` Binds a name to an object.
`void`	`bind(String name, Object obj)` Binds a name to an object.
`protected boolean`	`checkWritable()` Throws a naming exception is Context is not writable.
`void`	`close()` Closes this context.
`Name`	`composeName(Name name, Name prefix)` Composes the name of this context with a name relative to this context.
`String`	`composeName(String name, String prefix)` Composes the name of this context with a name relative to this context.
`Context`	`createSubcontext(Name name)` Creates and binds a new context.
`Context`	`createSubcontext(String name)` Creates and binds a new context.
`void`	`destroySubcontext(Name name)` Destroys the named context and removes it from the namespace.
`void`	`destroySubcontext(String name)` Destroys the named context and removes it from the namespace.
`Hashtable<?,?>`	`getEnvironment()` Retrieves the environment in effect for this context.
`boolean`	`getExceptionOnFailedWrite()`
`String`	`getNameInNamespace()` Retrieves the full name of this context within its own namespace.
`NameParser`	`getNameParser(Name name)` Retrieves the parser associated with the named context.
`NameParser`	`getNameParser(String name)` Retrieves the parser associated with the named context.
`protected boolean`	`isWritable()` Returns true if writing is allowed on this context.
`NamingEnumeration<NameClassPair>`	`list(Name name)` Enumerates the names bound in the named context, along with the class names of objects bound to them.
`NamingEnumeration<NameClassPair>`	`list(String name)` Enumerates the names bound in the named context, along with the class names of objects bound to them.
`NamingEnumeration<Binding>`	`listBindings(Name name)` Enumerates the names bound in the named context, along with the objects bound to them.
`NamingEnumeration<Binding>`	`listBindings(String name)` Enumerates the names bound in the named context, along with the objects bound to them.
`Object`	`lookup(Name name)` Retrieves the named object.
`protected Object`	`lookup(Name name, boolean resolveLinks)` Retrieves the named object.
`Object`	`lookup(String name)` Retrieves the named object.
`Object`	`lookupLink(Name name)` Retrieves the named object, following links except for the terminal atomic component of the name.
`Object`	`lookupLink(String name)` Retrieves the named object, following links except for the terminal atomic component of the name.
`void`	`rebind(Name name, Object obj)` Binds a name to an object, overwriting any existing binding.
`void`	`rebind(String name, Object obj)` Binds a name to an object, overwriting any existing binding.
`Object`	`removeFromEnvironment(String propName)` Removes an environment property from the environment of this context.
`void`	`rename(Name oldName, Name newName)` Binds a new name to the object bound to an old name, and unbinds the old name.
`void`	`rename(String oldName, String newName)` Binds a new name to the object bound to an old name, and unbinds the old name.
`void`	`setExceptionOnFailedWrite(boolean exceptionOnFailedWrite)`
`void`	`unbind(Name name)` Unbinds the named object.
`void`	`unbind(String name)` Unbinds the named object.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - nameParser
```
protected static final NameParser nameParser
```
    Name parser for this context.
  - env
```
protected final Hashtable<String,Object> env
```
    Environment.
  - sm
```
protected static final StringManager sm
```
    The string manager for this package.
  - bindings
```
protected final HashMap<String,NamingEntry> bindings
```
    Bindings in this Context.
  - name
```
protected final String name
```
    Name of the associated Catalina Context.
- Constructor Detail
  - NamingContext
```
public NamingContext(Hashtable<String,Object> env,
             String name)
              throws NamingException
```
    Builds a naming context using the given environment.
    
    Throws:
    
    NamingException
  - NamingContext
```
public NamingContext(Hashtable<String,Object> env,
             String name,
             HashMap<String,NamingEntry> bindings)
              throws NamingException
```
    Builds a naming context using the given environment.
    
    Throws:
    
    NamingException
- Method Detail
  - getExceptionOnFailedWrite
```
public boolean getExceptionOnFailedWrite()
```
  - setExceptionOnFailedWrite
```
public void setExceptionOnFailedWrite(boolean exceptionOnFailedWrite)
```
  - lookup
```
public Object lookup(Name name)
              throws NamingException
```
    Retrieves the named object. If name is empty, returns a new instance of this context (which represents the same naming context as this context, but its environment may be modified independently and it may be accessed concurrently).
    
    Specified by:
    
    lookup in interface Context
    
    Parameters:
    name - the name of the object to look up
    
    Returns:
    the object bound to name
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - lookup
```
public Object lookup(String name)
              throws NamingException
```
    Retrieves the named object.
    
    Specified by:
    
    lookup in interface Context
    
    Parameters:
    name - the name of the object to look up
    
    Returns:
    the object bound to name
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - bind
```
public void bind(Name name,
        Object obj)
          throws NamingException
```
    Binds a name to an object. All intermediate contexts and the target context (that named by all but terminal atomic component of the name) must already exist.
    
    Specified by:
    
    bind in interface Context
    
    Parameters:
    name - the name to bind; may not be empty
    obj - the object to bind; possibly null
    
    Throws:
    
    NameAlreadyBoundException - if name is already bound
    
    InvalidAttributesException - if object did not supply all mandatory attributes
    
    NamingException - if a naming exception is encountered
  - bind
```
public void bind(String name,
        Object obj)
          throws NamingException
```
    Binds a name to an object.
    
    Specified by:
    
    bind in interface Context
    
    Parameters:
    name - the name to bind; may not be empty
    obj - the object to bind; possibly null
    
    Throws:
    
    NameAlreadyBoundException - if name is already bound
    
    InvalidAttributesException - if object did not supply all mandatory attributes
    
    NamingException - if a naming exception is encountered
  - rebind
```
public void rebind(Name name,
          Object obj)
            throws NamingException
```
    Binds a name to an object, overwriting any existing binding. All intermediate contexts and the target context (that named by all but terminal atomic component of the name) must already exist.
    If the object is a DirContext, any existing attributes associated with the name are replaced with those of the object. Otherwise, any existing attributes associated with the name remain unchanged.
    
    Specified by:
    
    rebind in interface Context
    
    Parameters:
    name - the name to bind; may not be empty
    obj - the object to bind; possibly null
    
    Throws:
    
    InvalidAttributesException - if object did not supply all mandatory attributes
    
    NamingException - if a naming exception is encountered
  - rebind
```
public void rebind(String name,
          Object obj)
            throws NamingException
```
    Binds a name to an object, overwriting any existing binding.
    
    Specified by:
    
    rebind in interface Context
    
    Parameters:
    name - the name to bind; may not be empty
    obj - the object to bind; possibly null
    
    Throws:
    
    InvalidAttributesException - if object did not supply all mandatory attributes
    
    NamingException - if a naming exception is encountered
  - unbind
```
public void unbind(Name name)
            throws NamingException
```
    Unbinds the named object. Removes the terminal atomic name in name from the target context--that named by all but the terminal atomic part of name.
    This method is idempotent. It succeeds even if the terminal atomic name is not bound in the target context, but throws NameNotFoundException if any of the intermediate contexts do not exist.
    
    Specified by:
    
    unbind in interface Context
    
    Parameters:
    name - the name to bind; may not be empty
    
    Throws:
    
    NameNotFoundException - if an intermediate context does not exist
    
    NamingException - if a naming exception is encountered
  - unbind
```
public void unbind(String name)
            throws NamingException
```
    Unbinds the named object.
    
    Specified by:
    
    unbind in interface Context
    
    Parameters:
    name - the name to bind; may not be empty
    
    Throws:
    
    NameNotFoundException - if an intermediate context does not exist
    
    NamingException - if a naming exception is encountered
  - rename
```
public void rename(Name oldName,
          Name newName)
            throws NamingException
```
    Binds a new name to the object bound to an old name, and unbinds the old name. Both names are relative to this context. Any attributes associated with the old name become associated with the new name. Intermediate contexts of the old name are not changed.
    
    Specified by:
    
    rename in interface Context
    
    Parameters:
    oldName - the name of the existing binding; may not be empty
    newName - the name of the new binding; may not be empty
    
    Throws:
    
    NameAlreadyBoundException - if newName is already bound
    
    NamingException - if a naming exception is encountered
  - rename
```
public void rename(String oldName,
          String newName)
            throws NamingException
```
    Binds a new name to the object bound to an old name, and unbinds the old name.
    
    Specified by:
    
    rename in interface Context
    
    Parameters:
    oldName - the name of the existing binding; may not be empty
    newName - the name of the new binding; may not be empty
    
    Throws:
    
    NameAlreadyBoundException - if newName is already bound
    
    NamingException - if a naming exception is encountered
  - list
```
public NamingEnumeration<NameClassPair> list(Name name)
                                      throws NamingException
```
    Enumerates the names bound in the named context, along with the class names of objects bound to them. The contents of any subcontexts are not included.
    If a binding is added to or removed from this context, its effect on an enumeration previously returned is undefined.
    
    Specified by:
    
    list in interface Context
    
    Parameters:
    name - the name of the context to list
    
    Returns:
    an enumeration of the names and class names of the bindings in this context. Each element of the enumeration is of type NameClassPair.
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - list
```
public NamingEnumeration<NameClassPair> list(String name)
                                      throws NamingException
```
    Enumerates the names bound in the named context, along with the class names of objects bound to them.
    
    Specified by:
    
    list in interface Context
    
    Parameters:
    name - the name of the context to list
    
    Returns:
    an enumeration of the names and class names of the bindings in this context. Each element of the enumeration is of type NameClassPair.
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - listBindings
```
public NamingEnumeration<Binding> listBindings(Name name)
                                        throws NamingException
```
    Enumerates the names bound in the named context, along with the objects bound to them. The contents of any subcontexts are not included.
    If a binding is added to or removed from this context, its effect on an enumeration previously returned is undefined.
    
    Specified by:
    
    listBindings in interface Context
    
    Parameters:
    name - the name of the context to list
    
    Returns:
    an enumeration of the bindings in this context. Each element of the enumeration is of type Binding.
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - listBindings
```
public NamingEnumeration<Binding> listBindings(String name)
                                        throws NamingException
```
    Enumerates the names bound in the named context, along with the objects bound to them.
    
    Specified by:
    
    listBindings in interface Context
    
    Parameters:
    name - the name of the context to list
    
    Returns:
    an enumeration of the bindings in this context. Each element of the enumeration is of type Binding.
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - destroySubcontext
```
public void destroySubcontext(Name name)
                       throws NamingException
```
    Destroys the named context and removes it from the namespace. Any attributes associated with the name are also removed. Intermediate contexts are not destroyed.
    This method is idempotent. It succeeds even if the terminal atomic name is not bound in the target context, but throws NameNotFoundException if any of the intermediate contexts do not exist. In a federated naming system, a context from one naming system may be bound to a name in another. One can subsequently look up and perform operations on the foreign context using a composite name. However, an attempt destroy the context using this composite name will fail with NotContextException, because the foreign context is not a "subcontext" of the context in which it is bound. Instead, use unbind() to remove the binding of the foreign context. Destroying the foreign context requires that the destroySubcontext() be performed on a context from the foreign context's "native" naming system.
    
    Specified by:
    
    destroySubcontext in interface Context
    
    Parameters:
    name - the name of the context to be destroyed; may not be empty
    
    Throws:
    
    NameNotFoundException - if an intermediate context does not exist
    
    NotContextException - if the name is bound but does not name a context, or does not name a context of the appropriate type
    
    NamingException
  - destroySubcontext
```
public void destroySubcontext(String name)
                       throws NamingException
```
    Destroys the named context and removes it from the namespace.
    
    Specified by:
    
    destroySubcontext in interface Context
    
    Parameters:
    name - the name of the context to be destroyed; may not be empty
    
    Throws:
    
    NameNotFoundException - if an intermediate context does not exist
    
    NotContextException - if the name is bound but does not name a context, or does not name a context of the appropriate type
    
    NamingException
  - createSubcontext
```
public Context createSubcontext(Name name)
                         throws NamingException
```
    Creates and binds a new context. Creates a new context with the given name and binds it in the target context (that named by all but terminal atomic component of the name). All intermediate contexts and the target context must already exist.
    
    Specified by:
    
    createSubcontext in interface Context
    
    Parameters:
    name - the name of the context to create; may not be empty
    
    Returns:
    the newly created context
    
    Throws:
    
    NameAlreadyBoundException - if name is already bound
    
    InvalidAttributesException - if creation of the sub-context requires specification of mandatory attributes
    
    NamingException - if a naming exception is encountered
  - createSubcontext
```
public Context createSubcontext(String name)
                         throws NamingException
```
    Creates and binds a new context.
    
    Specified by:
    
    createSubcontext in interface Context
    
    Parameters:
    name - the name of the context to create; may not be empty
    
    Returns:
    the newly created context
    
    Throws:
    
    NameAlreadyBoundException - if name is already bound
    
    InvalidAttributesException - if creation of the sub-context requires specification of mandatory attributes
    
    NamingException - if a naming exception is encountered
  - lookupLink
```
public Object lookupLink(Name name)
                  throws NamingException
```
    Retrieves the named object, following links except for the terminal atomic component of the name. If the object bound to name is not a link, returns the object itself.
    
    Specified by:
    
    lookupLink in interface Context
    
    Parameters:
    name - the name of the object to look up
    
    Returns:
    the object bound to name, not following the terminal link (if any).
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - lookupLink
```
public Object lookupLink(String name)
                  throws NamingException
```
    Retrieves the named object, following links except for the terminal atomic component of the name.
    
    Specified by:
    
    lookupLink in interface Context
    
    Parameters:
    name - the name of the object to look up
    
    Returns:
    the object bound to name, not following the terminal link (if any).
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - getNameParser
```
public NameParser getNameParser(Name name)
                         throws NamingException
```
    Retrieves the parser associated with the named context. In a federation of namespaces, different naming systems will parse names differently. This method allows an application to get a parser for parsing names into their atomic components using the naming convention of a particular naming system. Within any single naming system, NameParser objects returned by this method must be equal (using the equals() test).
    
    Specified by:
    
    getNameParser in interface Context
    
    Parameters:
    name - the name of the context from which to get the parser
    
    Returns:
    a name parser that can parse compound names into their atomic components
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - getNameParser
```
public NameParser getNameParser(String name)
                         throws NamingException
```
    Retrieves the parser associated with the named context.
    
    Specified by:
    
    getNameParser in interface Context
    
    Parameters:
    name - the name of the context from which to get the parser
    
    Returns:
    a name parser that can parse compound names into their atomic components
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - composeName
```
public Name composeName(Name name,
               Name prefix)
                 throws NamingException
```
    Composes the name of this context with a name relative to this context.
    Given a name (name) relative to this context, and the name (prefix) of this context relative to one of its ancestors, this method returns the composition of the two names using the syntax appropriate for the naming system(s) involved. That is, if name names an object relative to this context, the result is the name of the same object, but relative to the ancestor context. None of the names may be null.
    
    Specified by:
    
    composeName in interface Context
    
    Parameters:
    name - a name relative to this context
    prefix - the name of this context relative to one of its ancestors
    
    Returns:
    the composition of prefix and name
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - composeName
```
public String composeName(String name,
                 String prefix)
                   throws NamingException
```
    Composes the name of this context with a name relative to this context.
    
    Specified by:
    
    composeName in interface Context
    
    Parameters:
    name - a name relative to this context
    prefix - the name of this context relative to one of its ancestors
    
    Returns:
    the composition of prefix and name
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - addToEnvironment
```
public Object addToEnvironment(String propName,
                      Object propVal)
                        throws NamingException
```
    Adds a new environment property to the environment of this context. If the property already exists, its value is overwritten.
    
    Specified by:
    
    addToEnvironment in interface Context
    
    Parameters:
    propName - the name of the environment property to add; may not be null
    propVal - the value of the property to add; may not be null
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - removeFromEnvironment
```
public Object removeFromEnvironment(String propName)
                             throws NamingException
```
    Removes an environment property from the environment of this context.
    
    Specified by:
    
    removeFromEnvironment in interface Context
    
    Parameters:
    propName - the name of the environment property to remove; may not be null
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - getEnvironment
```
public Hashtable<?,?> getEnvironment()
                              throws NamingException
```
    Retrieves the environment in effect for this context. See class description for more details on environment properties. The caller should not make any changes to the object returned: their effect on the context is undefined. The environment of this context may be changed using addToEnvironment() and removeFromEnvironment().
    
    Specified by:
    
    getEnvironment in interface Context
    
    Returns:
    the environment of this context; never null
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - close
```
public void close()
           throws NamingException
```
    Closes this context. This method releases this context's resources immediately, instead of waiting for them to be released automatically by the garbage collector. This method is idempotent: invoking it on a context that has already been closed has no effect. Invoking any other method on a closed context is not allowed, and results in undefined behaviour.
    
    Specified by:
    
    close in interface Context
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - getNameInNamespace
```
public String getNameInNamespace()
                          throws NamingException
```
    Retrieves the full name of this context within its own namespace.
    Many naming services have a notion of a "full name" for objects in their respective namespaces. For example, an LDAP entry has a distinguished name, and a DNS record has a fully qualified name. This method allows the client application to retrieve this name. The string returned by this method is not a JNDI composite name and should not be passed directly to context methods. In naming systems for which the notion of full name does not make sense, OperationNotSupportedException is thrown.
    
    Specified by:
    
    getNameInNamespace in interface Context
    
    Returns:
    this context's name in its own namespace; never null
    
    Throws:
    
    OperationNotSupportedException - if the naming system does not have the notion of a full name
    
    NamingException - if a naming exception is encountered
  - lookup
```
protected Object lookup(Name name,
            boolean resolveLinks)
                 throws NamingException
```
    Retrieves the named object.
    
    Parameters:
    name - the name of the object to look up
    resolveLinks - If true, the links will be resolved
    
    Returns:
    the object bound to name
    
    Throws:
    
    NamingException - if a naming exception is encountered
  - bind
```
protected void bind(Name name,
        Object obj,
        boolean rebind)
             throws NamingException
```
    Binds a name to an object. All intermediate contexts and the target context (that named by all but terminal atomic component of the name) must already exist.
    
    Parameters:
    name - the name to bind; may not be empty
    obj - the object to bind; possibly null
    rebind - if true, then perform a rebind (ie, overwrite)
    
    Throws:
    
    NameAlreadyBoundException - if name is already bound
    
    InvalidAttributesException - if object did not supply all mandatory attributes
    
    NamingException - if a naming exception is encountered
  - isWritable
```
protected boolean isWritable()
```
    Returns true if writing is allowed on this context.
  - checkWritable
```
protected boolean checkWritable()
                         throws NamingException
```
    Throws a naming exception is Context is not writable.
    
    Throws:
    
    NamingException

Class NamingContext

Field Summary

Fields inherited from interface javax.naming.Context

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

nameParser

env

sm

bindings

name

Constructor Detail

NamingContext

NamingContext

Method Detail

getExceptionOnFailedWrite

setExceptionOnFailedWrite

lookup

lookup

bind

bind

rebind

rebind

unbind

unbind

rename

rename

list

list

listBindings

listBindings

destroySubcontext

destroySubcontext

createSubcontext

createSubcontext

lookupLink

lookupLink

getNameParser

getNameParser

composeName

composeName

addToEnvironment

removeFromEnvironment

getEnvironment

close

getNameInNamespace

lookup

bind

isWritable

checkWritable