OpenJDK 1.22 · com.sun.jndi.rmi.registry.RegistryContextFactory

Modifier and Type	Field and Description
public static final String	ADDRESS_TYPE The type of each address in an RMI registry reference.

Access	Constructor and Description
public	RegistryContextFactory()

Method Summary

Modifier and Type	Method and Description
private static String	getInitCtxURL(Hashtable<?, ?> env) Reads environment to find URL of initial context.
public Context	getInitialContext(Hashtable<?, ?> The possibly null environment specifying information to be used in the creation of the initial context. env) Implements javax.naming.spi.InitialContextFactory.getInitialContext. Creates an Initial Context for beginning name resolution.
public Object	getObjectInstance(Object The possibly null object containing location or reference information that can be used in creating an object. ref, Name The name of this object relative to `nameCtx`, or null if no name is specified. name, Context The context relative to which the `name` parameter is specified, or null if `name` is relative to the default initial context. nameCtx, Hashtable<?, ?> The possibly null environment that is used in creating the object. env) Implements javax.naming.spi.ObjectFactory.getObjectInstance. Creates an object using the location or reference information specified.
private static String[]	getURLs(Reference ref) Returns the URLs contained within an RMI registry reference.
private static boolean	isRegistryRef(Object obj) Returns true if argument is an RMI registry reference.
private static Object	URLsToObject(String[] urls, Hashtable<?, ?> env)
private static Context	URLToContext(String url, Hashtable<?, ?> env)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

ADDRESS_TYPE	back to summary
public static final String ADDRESS_TYPE The type of each address in an RMI registry reference.

RegistryContextFactory	back to summary
public RegistryContextFactory()

Method Detail

getInitCtxURL	back to summary
private static String getInitCtxURL(Hashtable<?, ?> env) Reads environment to find URL of initial context. The default URL is "rmi:".

getInitialContext back to summary

getInitialContext	back to summary
public Context getInitialContext(Hashtable<?, ?> env) throws NamingException Implements javax.naming.spi.InitialContextFactory.getInitialContext. Doc from javax.naming.spi.InitialContextFactory.getInitialContext. Creates an Initial Context for beginning name resolution. Special requirements of this context are supplied using `environment`. The environment parameter is owned by the caller. The implementation will not modify the object or keep a reference to it, although it may keep a reference to a clone or copy. Parameters env:Hashtable<?, ?> The possibly null environment specifying information to be used in the creation of the initial context. Returns:Context A non-null initial context object that implements the Context interface. Exceptions NamingException: If cannot create an initial context.

public Context getInitialContext(Hashtable<?, ?> env) throws NamingException

Implements javax.naming.spi.InitialContextFactory.getInitialContext.

Doc from javax.naming.spi.InitialContextFactory.getInitialContext.

Creates an Initial Context for beginning name resolution. Special requirements of this context are supplied using environment.

The environment parameter is owned by the caller. The implementation will not modify the object or keep a reference to it, although it may keep a reference to a clone or copy.

Parameters

env:Hashtable<?, ?>: The possibly null environment specifying information to be used in the creation of the initial context.

Returns:Context

A non-null initial context object that implements the Context interface.

Exceptions

NamingException:: If cannot create an initial context.

getObjectInstance back to summary

getObjectInstance	back to summary
public Object getObjectInstance(Object ref, Name name, Context nameCtx, Hashtable<?, ?> env) throws NamingException Implements javax.naming.spi.ObjectFactory.getObjectInstance. Doc from javax.naming.spi.ObjectFactory.getObjectInstance. Creates an object using the location or reference information specified. Special requirements of this object are supplied using `environment`. An example of such an environment property is user identity information. `NamingManager.getObjectInstance()` successively loads in object factories and invokes this method on them until one produces a non-null answer. When an exception is thrown by an object factory, the exception is passed on to the caller of `NamingManager.getObjectInstance()` (and no search is made for other factories that may produce a non-null answer). An object factory should only throw an exception if it is sure that it is the only intended factory and that no other object factories should be tried. If this factory cannot create an object using the arguments supplied, it should return null. A URL context factory is a special ObjectFactory that creates contexts for resolving URLs or objects whose locations are specified by URLs. The `getObjectInstance()` method of a URL context factory will obey the following rules. If `obj` is null, create a context for resolving URLs of the scheme associated with this factory. The resulting context is not tied to a specific URL: it is able to handle arbitrary URLs with this factory's scheme id. For example, invoking `getObjectInstance()` with `obj` set to null on an LDAP URL context factory would return a context that can resolve LDAP URLs such as "ldap://ldap.wiz.com/o=wiz,c=us" and "ldap://ldap.umich.edu/o=umich,c=us". If `obj` is a URL string, create an object (typically a context) identified by the URL. For example, suppose this is an LDAP URL context factory. If `obj` is "ldap://ldap.wiz.com/o=wiz,c=us", getObjectInstance() would return the context named by the distinguished name "o=wiz, c=us" at the LDAP server ldap.wiz.com. This context can then be used to resolve LDAP names (such as "cn=George") relative to that context. If `obj` is an array of URL strings, the assumption is that the URLs are equivalent in terms of the context to which they refer. Verification of whether the URLs are, or need to be, equivalent is up to the context factory. The order of the URLs in the array is not significant. The object returned by getObjectInstance() is like that of the single URL case. It is the object named by the URLs. If `obj` is of any other type, the behavior of `getObjectInstance()` is determined by the context factory implementation. The `name` and `environment` parameters are owned by the caller. The implementation will not modify these objects or keep references to them, although it may keep references to clones or copies. Name and Context Parameters. The `name` and `nameCtx` parameters may optionally be used to specify the name of the object being created. `name` is the name of the object, relative to context `nameCtx`. If there are several possible contexts from which the object could be named -- as will often be the case -- it is up to the caller to select one. A good rule of thumb is to select the "deepest" context available. If `nameCtx` is null, `name` is relative to the default initial context. If no name is being specified, the `name` parameter should be null. If a factory uses `nameCtx` it should synchronize its use against concurrent access, since context implementations are not guaranteed to be thread-safe. Parameters ref:Object The possibly null object containing location or reference information that can be used in creating an object. name:Name The name of this object relative to `nameCtx`, or null if no name is specified. nameCtx:Context The context relative to which the `name` parameter is specified, or null if `name` is relative to the default initial context. env:Hashtable<?, ?> The possibly null environment that is used in creating the object. Returns:Object The object created; null if an object cannot be created.

public Object getObjectInstance(Object ref, Name name, Context nameCtx, Hashtable<?, ?> env) throws NamingException

Implements javax.naming.spi.ObjectFactory.getObjectInstance.

Doc from javax.naming.spi.ObjectFactory.getObjectInstance.

Creates an object using the location or reference information specified.

Special requirements of this object are supplied using environment. An example of such an environment property is user identity information.

NamingManager.getObjectInstance() successively loads in object factories and invokes this method on them until one produces a non-null answer. When an exception is thrown by an object factory, the exception is passed on to the caller of NamingManager.getObjectInstance() (and no search is made for other factories that may produce a non-null answer). An object factory should only throw an exception if it is sure that it is the only intended factory and that no other object factories should be tried. If this factory cannot create an object using the arguments supplied, it should return null.

A URL context factory is a special ObjectFactory that creates contexts for resolving URLs or objects whose locations are specified by URLs. The getObjectInstance() method of a URL context factory will obey the following rules.

If obj is null, create a context for resolving URLs of the scheme associated with this factory. The resulting context is not tied to a specific URL: it is able to handle arbitrary URLs with this factory's scheme id. For example, invoking getObjectInstance() with obj set to null on an LDAP URL context factory would return a context that can resolve LDAP URLs such as "ldap://ldap.wiz.com/o=wiz,c=us" and "ldap://ldap.umich.edu/o=umich,c=us".
If obj is a URL string, create an object (typically a context) identified by the URL. For example, suppose this is an LDAP URL context factory. If obj is "ldap://ldap.wiz.com/o=wiz,c=us", getObjectInstance() would return the context named by the distinguished name "o=wiz, c=us" at the LDAP server ldap.wiz.com. This context can then be used to resolve LDAP names (such as "cn=George") relative to that context.
If obj is an array of URL strings, the assumption is that the URLs are equivalent in terms of the context to which they refer. Verification of whether the URLs are, or need to be, equivalent is up to the context factory. The order of the URLs in the array is not significant. The object returned by getObjectInstance() is like that of the single URL case. It is the object named by the URLs.
If obj is of any other type, the behavior of getObjectInstance() is determined by the context factory implementation.

The name and environment parameters are owned by the caller. The implementation will not modify these objects or keep references to them, although it may keep references to clones or copies.

Name and Context Parameters. The name and nameCtx parameters may optionally be used to specify the name of the object being created. name is the name of the object, relative to context nameCtx. If there are several possible contexts from which the object could be named -- as will often be the case -- it is up to the caller to select one. A good rule of thumb is to select the "deepest" context available. If nameCtx is null, name is relative to the default initial context. If no name is being specified, the name parameter should be null. If a factory uses nameCtx it should synchronize its use against concurrent access, since context implementations are not guaranteed to be thread-safe.

Parameters

ref:Object: The possibly null object containing location or reference information that can be used in creating an object.
name:Name: The name of this object relative to nameCtx, or null if no name is specified.
nameCtx:Context: The context relative to which the name parameter is specified, or null if name is relative to the default initial context.
env:Hashtable<?, ?>: The possibly null environment that is used in creating the object.

Returns:Object

The object created; null if an object cannot be created.

getURLs	back to summary
private static String[] getURLs(Reference ref) throws NamingException Returns the URLs contained within an RMI registry reference.

isRegistryRef	back to summary
private static boolean isRegistryRef(Object obj) Returns true if argument is an RMI registry reference.

URLsToObject	back to summary
private static Object URLsToObject(String[] urls, Hashtable<?, ?> env) throws NamingException

URLToContext	back to summary
private static Context URLToContext(String url, Hashtable<?, ?> env) throws NamingException

public Class RegistryContextFactory

Field Summary

Constructor Summary

Method Summary

Field Detail

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Method Detail