Package org.apache.naming

Class NamingContext

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 Details

    • 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 Details

    • NamingContext

      public NamingContext(Hashtable<String,Object> env, String name)
      Builds a naming context.
      Parameters:
      env - The environment to use to construct the naming context
      name - The name of the associated Catalina Context

    • NamingContext

      public NamingContext(Hashtable<String,Object> env, String name, HashMap<String,NamingEntry> bindings)
      Builds a naming context.
      Parameters:
      env - The environment to use to construct the naming context
      name - The name of the associated Catalina Context
      bindings - The initial bindings for the naming context

  • Method Details

    • 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)
      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

    • addToEnvironment

      public Object addToEnvironment(String propName, Object propVal)
      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

    • removeFromEnvironment

      public Object removeFromEnvironment(String propName)
      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

    • getEnvironment

      public Hashtable<?,?> getEnvironment()
      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

    • 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.
      Returns:
      true if the Context is writable
      Throws:
      NamingException - if the Context is not writable and exceptionOnFailedWrite is true