Package com.sun.jndi.url.iiop

Class GenericURLContext

java.lang.Object

com.sun.jndi.url.iiop.GenericURLContext

All Implemented Interfaces:

Context

Direct Known Subclasses:

iiopURLContext

public abstract class GenericURLContext
extends Object
implements Context

This abstract class is a generic URL context that accepts as the name argument either a string URL or a Name whose first component is a URL. It resolves the URL to a target context and then continues the operation using the remaining name in the target context as if the first component names a junction. A subclass must define getRootURLContext() to process the URL into head/tail pieces. If it wants to control how URL strings are parsed and compared for the rename() operation, then it should override getNonRootURLSuffixes() and urlEquals().

Author:

Scott Seligman, Rosanna Lee

Field Summary

Fields

Modifier and Type	Field	Description
protected Hashtable<String,Object>	myEnv

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	Description
GenericURLContext(Hashtable<?,?> env)

Method Summary

Modifier and Type	Method	Description
Object	addToEnvironment(String propName, Object propVal)
void	bind(String name, Object obj)
void	bind(Name name, Object obj)
void	close()
String	composeName(String name, String prefix)
Name	composeName(Name name, Name prefix)
Context	createSubcontext(String name)
Context	createSubcontext(Name name)
void	destroySubcontext(String name)
void	destroySubcontext(Name name)
protected Context	getContinuationContext(Name n)	Gets the context in which to continue the operation.
Hashtable<String,Object>	getEnvironment()
String	getNameInNamespace()
NameParser	getNameParser(String name)
NameParser	getNameParser(Name name)
protected abstract ResolveResult	getRootURLContext(String url, Hashtable<?,?> env)	Resolves 'name' into a target context with remaining name.
protected String	getURLPrefix(String url)	Finds the prefix of a URL.
protected Name	getURLSuffix(String prefix, String url)	Returns the suffix of the url.
NamingEnumeration<NameClassPair>	list(String name)
NamingEnumeration<NameClassPair>	list(Name name)
NamingEnumeration<Binding>	listBindings(String name)
NamingEnumeration<Binding>	listBindings(Name name)
Object	lookup(String name)
Object	lookup(Name name)
Object	lookupLink(String name)
Object	lookupLink(Name name)
void	rebind(String name, Object obj)
void	rebind(Name name, Object obj)
Object	removeFromEnvironment(String propName)
void	rename(String oldName, String newName)
void	rename(Name name, Name newName)
void	unbind(String name)
void	unbind(Name name)
protected boolean	urlEquals(String url1, String url2)	Determines whether two URLs are the same.

Methods inherited from class java.lang.Object

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

Field Details

myEnv

protected Hashtable<String,Object> myEnv

Constructor Details

GenericURLContext

public GenericURLContext(Hashtable<?,?> env)

Method Details

close

public void close()
           throws NamingException

Specified by:

close in interface Context

Throws:

NamingException

getNameInNamespace

public String getNameInNamespace()
                          throws NamingException

Specified by:

getNameInNamespace in interface Context

Throws:

NamingException

getRootURLContext

protected abstract ResolveResult getRootURLContext(String url,
 Hashtable<?,?> env)
                                            throws NamingException

Resolves 'name' into a target context with remaining name. For example, with a JNDI URL "jndi://dnsname/rest_name", this method resolves "jndi://dnsname/" to a target context, and returns the target context with "rest_name". The definition of "root URL" and how much of the URL to consume is implementation specific. If rename() is supported for a particular URL scheme, getRootURLContext(), getURLPrefix(), and getURLSuffix() must be in sync wrt how URLs are parsed and returned.

Throws:

NamingException

getURLSuffix

protected Name getURLSuffix(String prefix,
 String url)
                     throws NamingException

Returns the suffix of the url. The result should be identical to that of calling getRootURLContext().getRemainingName(), but without the overhead of doing anything with the prefix like creating a context.

This method returns a Name instead of a String because to give the provider an opportunity to return a Name (for example, for weakly separated naming systems like COS naming).

The default implementation uses skips 'prefix', calls CorbaUtils.decode() on it, and returns the result as a single component CompositeName. Subclass should override if this is not appropriate. This method is used only by rename(). If rename() is supported for a particular URL scheme, getRootURLContext(), getURLPrefix(), and getURLSuffix() must be in sync wrt how URLs are parsed and returned.

For many URL schemes, this method is very similar to URL.getFile(), except getFile() will return a leading slash in the 2nd, 3rd, and 4th cases. For schemes like "ldap" and "iiop", the leading slash must be skipped before the name is an acceptable format for operation by the Context methods. For schemes that treat the leading slash as significant (such as "file"), the subclass must override getURLSuffix() to get the correct behavior. Remember, the behavior must match getRootURLContext().

 URL                                     Suffix
 foo://host:port                         <empty string>
 foo://host:port/rest/of/name            rest/of/name
 foo:///rest/of/name                     rest/of/name
 foo:/rest/of/name                       rest/of/name
 foo:rest/of/name                        rest/of/name
 

Throws:

NamingException

getURLPrefix

protected String getURLPrefix(String url)
                       throws NamingException

Finds the prefix of a URL. Default implementation looks for slashes and then extracts prefixes using String.substring(). Subclass should override if this is not appropriate. This method is used only by rename(). If rename() is supported for a particular URL scheme, getRootURLContext(), getURLPrefix(), and getURLSuffix() must be in sync wrt how URLs are parsed and returned.

URL Prefix foo://host:port foo://host:port foo://host:port/rest/of/name foo://host:port foo:///rest/of/name foo:// foo:/rest/of/name foo: foo:rest/of/name foo:

Throws:

NamingException

urlEquals

protected boolean urlEquals(String url1,
 String url2)

Determines whether two URLs are the same. Default implementation uses String.equals(). Subclass should override if this is not appropriate. This method is used by rename().

getContinuationContext

protected Context getContinuationContext(Name n)
                                  throws NamingException

Gets the context in which to continue the operation. This method is called when this context is asked to process a multicomponent Name in which the first component is a URL. Treat the first component like a junction: resolve it and then use NamingManager.getContinuationContext() to get the target context in which to operate on the remainder of the name (n.getSuffix(1)).

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

bind

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

Specified by:

bind in interface Context

Throws:

NamingException

bind

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

Specified by:

bind in interface Context

Throws:

NamingException

rebind

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

Specified by:

rebind in interface Context

Throws:

NamingException

rebind

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

Specified by:

rebind in interface Context

Throws:

NamingException

unbind

public void unbind(String name)
            throws NamingException

Specified by:

unbind in interface Context

Throws:

NamingException

unbind

public void unbind(Name name)
            throws NamingException

Specified by:

unbind in interface Context

Throws:

NamingException

rename

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

Specified by:

rename in interface Context

Throws:

NamingException

rename

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

Specified by:

rename in interface Context

Throws:

NamingException

list

public NamingEnumeration<NameClassPair> list(String name)
                                      throws NamingException

Specified by:

list in interface Context

Throws:

NamingException

list

public NamingEnumeration<NameClassPair> list(Name name)
                                      throws NamingException

Specified by:

list in interface Context

Throws:

NamingException

listBindings

public NamingEnumeration<Binding> listBindings(String name)
                                        throws NamingException

Specified by:

listBindings in interface Context

Throws:

NamingException

listBindings

public NamingEnumeration<Binding> listBindings(Name name)
                                        throws NamingException

Specified by:

listBindings in interface Context

Throws:

NamingException

destroySubcontext

public void destroySubcontext(String name)
                       throws NamingException

Specified by:

destroySubcontext in interface Context

Throws:

NamingException

destroySubcontext

public void destroySubcontext(Name name)
                       throws NamingException

Specified by:

destroySubcontext in interface Context

Throws:

NamingException

createSubcontext

public Context createSubcontext(String name)
                         throws NamingException

Specified by:

createSubcontext in interface Context

Throws:

NamingException

createSubcontext

public Context createSubcontext(Name name)
                         throws NamingException

Specified by:

createSubcontext in interface Context

Throws:

NamingException

lookupLink

public Object lookupLink(String name)
                  throws NamingException

Specified by:

lookupLink in interface Context

Throws:

NamingException

lookupLink

public Object lookupLink(Name name)
                  throws NamingException

Specified by:

lookupLink in interface Context

Throws:

NamingException

getNameParser

public NameParser getNameParser(String name)
                         throws NamingException

Specified by:

getNameParser in interface Context

Throws:

NamingException

getNameParser

public NameParser getNameParser(Name name)
                         throws NamingException

Specified by:

getNameParser in interface Context

Throws:

NamingException

composeName

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

Specified by:

composeName in interface Context

Throws:

NamingException

composeName

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

Specified by:

composeName in interface Context

Throws:

NamingException

removeFromEnvironment

public Object removeFromEnvironment(String propName)
                             throws NamingException

Specified by:

removeFromEnvironment in interface Context

Throws:

NamingException

addToEnvironment

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

Specified by:

addToEnvironment in interface Context

Throws:

NamingException

getEnvironment

public Hashtable<String,Object> getEnvironment()
                                        throws NamingException

Specified by:

getEnvironment in interface Context

Throws:

NamingException