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Oracle Fusion Middleware Java API Reference for Oracle ADF Share 11g Release 1 (11.1.1.5.0) E10686-06 |
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java.lang.Object
oracle.adf.share.connection.jmx.JMXConnectionFactory
public class JMXConnectionFactory
Constructor Summary | |
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JMXConnectionFactory() |
Method Summary | |
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static JMXConnection |
createNew() Convenience method for test code that needs an empty JMXConnection |
java.lang.Object |
getObjectInstance(java.lang.Object obj, javax.naming.Name name, javax.naming.Context nameCtx, java.util.Hashtable<?,?> environment) Creates an object using the location or reference information specified. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public JMXConnectionFactory()
Method Detail |
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public java.lang.Object getObjectInstance(java.lang.Object obj, javax.naming.Name name, javax.naming.Context nameCtx, java.util.Hashtable<?,?> environment) throws java.lang.Exception
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.
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".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.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.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.
getObjectInstance
in interface javax.naming.spi.ObjectFactory
obj
- The possibly null object containing location or reference information that can be used in creating an object.name
- The name of this object relative to nameCtx
, or null if no name is specified.nameCtx
- The context relative to which the name
parameter is specified, or null if name
is relative to the default initial context.environment
- The possibly null environment that is used in creating the object.java.lang.Exception
- if this object factory encountered an exception while attempting to create an object, and no other object factories are to be tried.public static JMXConnection createNew()
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Oracle Fusion Middleware Java API Reference for Oracle ADF Share 11g Release 1 (11.1.1.5.0) E10686-06 |
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