*
* Most of the methods have overloaded versions with one taking a
* Name parameter and one taking a String.
* These overloaded versions are equivalent in that if
* the Name and String parameters are just
* different representations of the same name, then the overloaded
* versions of the same methods behave the same.
* In the method descriptions below, only one version is fully documented.
* The second version instead has a link to the first: the same
* documentation applies to both.
*
* For systems that support federation, String name arguments to * Context methods are composite names. Name arguments that are * instances of CompositeName are treated as composite names, * while Name arguments that are not instances of * CompositeName are treated as compound names (which might be * instances of CompoundName or other implementations of compound * names). This allows the results of NameParser.parse() to be used as * arguments to the Context methods. * Prior to JNDI 1.2, all name arguments were treated as composite names. *
* Furthermore, for systems that support federation, all names returned * in a NamingEnumeration * from list() and listBindings() are composite names * represented as strings. * See CompositeName for the string syntax of names. *
* For systems that do not support federation, the name arguments (in * either Name or String forms) and the names returned in * NamingEnumeration may be names in their own namespace rather than * names in a composite namespace, at the discretion of the service * provider. *
*
*
* For purposes of concurrency control, * a Context operation that returns a NamingEnumeration is * not considered to have completed while the enumeration is still in * use, or while any referrals generated by that operation are still * being followed. * *
*
*
* JNDI applications need a way to communicate various preferences * and properties that define the environment in which naming and * directory services are accessed. For example, a context might * require specification of security credentials in order to access * the service. Another context might require that server configuration * information be supplied. These are referred to as the environment * of a context. The Context interface provides methods for * retrieving and updating this environment. *
* The environment is inherited from the parent context as * context methods proceed from one context to the next. Changes to * the environment of one context do not directly affect those * of other contexts. *
* It is implementation-dependent when environment properties are used * and/or verified for validity. For example, some of the * security-related properties are used by service providers to "log in" * to the directory. This login process might occur at the time the * context is created, or the first time a method is invoked on the * context. When, and whether this occurs at all, is * implementation-dependent. When environment properties are added or * removed from the context, verifying the validity of the changes is again * implementation-dependent. For example, verification of some properties * might occur at the time the change is made, or at the time the next * operation is performed on the context, or not at all. *
* Any object with a reference to a context may examine that context's * environment. Sensitive information such as clear-text * passwords should not be stored there unless the implementation is * known to protect it. * *
* To simplify the task of setting up the environment * required by a JNDI application, * application components and service providers may be distributed * along with resource files. * A JNDI resource file is a file in the properties file format (see * {@link java.util.Properties#load java.util.Properties}), * containing a list of key/value pairs. * The key is the name of the property (e.g. "java.naming.factory.object") * and the value is a string in the format defined * for that property. Here is an example of a JNDI resource file: * *
* * The JNDI class library reads the resource files and makes the property * values freely available. Thus JNDI resource files should be considered * to be "world readable", and sensitive information such as clear-text * passwords should not be stored there. ** java.naming.factory.object=com.sun.jndi.ldap.AttrsToCorba:com.wiz.from.Person * java.naming.factory.state=com.sun.jndi.ldap.CorbaToAttrs:com.wiz.from.Person * java.naming.factory.control=com.sun.jndi.ldap.ResponseControlFactory *
* There are two kinds of JNDI resource files: * provider and application. * *
* [prefix/]jndiprovider.properties ** where prefix is * the package name of the provider's context implementation(s), * with each period (".") converted to a slash ("/"). * * For example, suppose a service provider defines a context * implementation with class name com.sun.jndi.ldap.LdapCtx. * The provider resource for this provider is named * com/sun/jndi/ldap/jndiprovider.properties. If the class is * not in a package, the resource's name is simply * jndiprovider.properties. * *
* * Certain methods in the JNDI class library make use of the standard * JNDI properties that specify lists of JNDI factories: *
* For each property found in more than one application resource file, * JNDI uses the first value found or, in a few cases where it makes * sense to do so, it concatenates all of the values (details are given * below). * For example, if the "java.naming.factory.object" property is found in * three jndi.properties resource files, the * list of object factories is a concatenation of the property * values from all three files. * Using this scheme, each deployable component is responsible for * listing the factories that it exports. JNDI automatically * collects and uses all of these export lists when searching for factory * classes. * *
* When the JNDI class library needs to determine * the value of a property, it does so by merging * the values from the following two sources, in order: *
* When a service provider needs to determine the value of a property, * it will generally take that value directly from the environment. * A service provider may define provider-specific properties * to be placed in its own provider resource file. In that * case it should merge values as described in the previous paragraph. * *
* In this way, each service provider developer can specify a list of * factories to use with that service provider. These can be modified by * the application resources specified by the deployer of the application * or applet, which in turn can be modified by the user. * * @author Rosanna Lee * @author Scott Seligman * @author R. Vasudevan * * @since 1.3 */ public interface Context { /** * 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). * * @param name * the name of the object to look up * @return the object bound to name * @throws NamingException if a naming exception is encountered * * @see #lookup(String) * @see #lookupLink(Name) */ public Object lookup(Name name) throws NamingException; /** * Retrieves the named object. * See {@link #lookup(Name)} for details. * @param name * the name of the object to look up * @return the object bound to name * @throws NamingException if a naming exception is encountered */ public Object lookup(String name) 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. * * @param name * the name to bind; may not be empty * @param obj * the object to bind; possibly null * @throws NameAlreadyBoundException if name is already bound * @throws javax.naming.directory.InvalidAttributesException * if object did not supply all mandatory attributes * @throws NamingException if a naming exception is encountered * * @see #bind(String, Object) * @see #rebind(Name, Object) * @see javax.naming.directory.DirContext#bind(Name, Object, * javax.naming.directory.Attributes) */ public void bind(Name name, Object obj) throws NamingException; /** * Binds a name to an object. * See {@link #bind(Name, Object)} for details. * * @param name * the name to bind; may not be empty * @param obj * the object to bind; possibly null * @throws NameAlreadyBoundException if name is already bound * @throws javax.naming.directory.InvalidAttributesException * if object did not supply all mandatory attributes * @throws NamingException if a naming exception is encountered */ public void bind(String 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.
*
* @param name
* the name to bind; may not be empty
* @param obj
* the object to bind; possibly null
* @throws javax.naming.directory.InvalidAttributesException
* if object did not supply all mandatory attributes
* @throws NamingException if a naming exception is encountered
*
* @see #rebind(String, Object)
* @see #bind(Name, Object)
* @see javax.naming.directory.DirContext#rebind(Name, Object,
* javax.naming.directory.Attributes)
* @see javax.naming.directory.DirContext
*/
public void rebind(Name name, Object obj) throws NamingException;
/**
* Binds a name to an object, overwriting any existing binding.
* See {@link #rebind(Name, Object)} for details.
*
* @param name
* the name to bind; may not be empty
* @param obj
* the object to bind; possibly null
* @throws javax.naming.directory.InvalidAttributesException
* if object did not supply all mandatory attributes
* @throws NamingException if a naming exception is encountered
*/
public void rebind(String name, Object obj) 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. * *
Any attributes associated with the name are removed. * Intermediate contexts are not changed. * * @param name * the name to unbind; may not be empty * @throws NameNotFoundException if an intermediate context does not exist * @throws NamingException if a naming exception is encountered * @see #unbind(String) */ public void unbind(Name name) throws NamingException; /** * Unbinds the named object. * See {@link #unbind(Name)} for details. * * @param name * the name to unbind; may not be empty * @throws NameNotFoundException if an intermediate context does not exist * @throws NamingException if a naming exception is encountered */ public void unbind(String name) 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. * * @param oldName * the name of the existing binding; may not be empty * @param newName * the name of the new binding; may not be empty * @throws NameAlreadyBoundException if newName is already bound * @throws NamingException if a naming exception is encountered * * @see #rename(String, String) * @see #bind(Name, Object) * @see #rebind(Name, Object) */ 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. * See {@link #rename(Name, Name)} for details. * * @param oldName * the name of the existing binding; may not be empty * @param newName * the name of the new binding; may not be empty * @throws NameAlreadyBoundException if newName is already bound * @throws NamingException if a naming exception is encountered */ public void rename(String oldName, String newName) 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.
*
* @param name
* the name of the context to list
* @return 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
*
* @see #list(String)
* @see #listBindings(Name)
* @see NameClassPair
*/
public NamingEnumeration If a binding is added to or removed from this context,
* its effect on an enumeration previously returned is undefined.
*
* @param name
* the name of the context to list
* @return 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
*
* @see #listBindings(String)
* @see #list(Name)
* @see Binding
*/
public NamingEnumeration 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.
*
* @param name
* the name of the context to be destroyed; may not be empty
* @throws NameNotFoundException if an intermediate context does not exist
* @throws NotContextException if the name is bound but does not name a
* context, or does not name a context of the appropriate type
* @throws ContextNotEmptyException if the named context is not empty
* @throws NamingException if a naming exception is encountered
*
* @see #destroySubcontext(String)
*/
public void destroySubcontext(Name name) throws NamingException;
/**
* Destroys the named context and removes it from the namespace.
* See {@link #destroySubcontext(Name)} for details.
*
* @param name
* the name of the context to be destroyed; may not be empty
* @throws NameNotFoundException if an intermediate context does not exist
* @throws NotContextException if the name is bound but does not name a
* context, or does not name a context of the appropriate type
* @throws ContextNotEmptyException if the named context is not empty
* @throws NamingException if a naming exception is encountered
*/
public void destroySubcontext(String 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.
*
* @param name
* the name of the context to create; may not be empty
* @return the newly created context
*
* @throws NameAlreadyBoundException if name is already bound
* @throws javax.naming.directory.InvalidAttributesException
* if creation of the subcontext requires specification of
* mandatory attributes
* @throws NamingException if a naming exception is encountered
*
* @see #createSubcontext(String)
* @see javax.naming.directory.DirContext#createSubcontext
*/
public Context createSubcontext(Name name) throws NamingException;
/**
* Creates and binds a new context.
* See {@link #createSubcontext(Name)} for details.
*
* @param name
* the name of the context to create; may not be empty
* @return the newly created context
*
* @throws NameAlreadyBoundException if name is already bound
* @throws javax.naming.directory.InvalidAttributesException
* if creation of the subcontext requires specification of
* mandatory attributes
* @throws NamingException if a naming exception is encountered
*/
public Context createSubcontext(String 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.
*
* @param name
* the name of the object to look up
* @return the object bound to name, not following the
* terminal link (if any).
* @throws NamingException if a naming exception is encountered
*
* @see #lookupLink(String)
*/
public Object lookupLink(Name name) throws NamingException;
/**
* Retrieves the named object, following links except
* for the terminal atomic component of the name.
* See {@link #lookupLink(Name)} for details.
*
* @param name
* the name of the object to look up
* @return the object bound to name, not following the
* terminal link (if any)
* @throws NamingException if a naming exception is encountered
*/
public Object lookupLink(String 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).
*
* @param name
* the name of the context from which to get the parser
* @return a name parser that can parse compound names into their atomic
* components
* @throws NamingException if a naming exception is encountered
*
* @see #getNameParser(String)
* @see CompoundName
*/
public NameParser getNameParser(Name name) throws NamingException;
/**
* Retrieves the parser associated with the named context.
* See {@link #getNameParser(Name)} for details.
*
* @param name
* the name of the context from which to get the parser
* @return a name parser that can parse compound names into their atomic
* components
* @throws NamingException if a naming exception is encountered
*/
public NameParser getNameParser(String name) throws NamingException;
/**
* Composes the name of this context with a name relative to
* this context.
* Given a name (
* For example, if this context is named "wiz.com" relative
* to the initial context, then
* 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().
*
* @return the environment of this context; never null
* @throws NamingException if a naming exception is encountered
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
*/
public Hashtable getEnvironment() 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.
*
* @throws NamingException if a naming exception is encountered
*/
public void close() 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.
*
* @return 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
* @throws NamingException if a naming exception is encountered
*
* @since 1.3
*/
public String getNameInNamespace() throws NamingException;
// public static final: JLS says recommended style is to omit these modifiers
// because they are the default
/**
* Constant that holds the name of the environment property
* for specifying the initial context factory to use. The value
* of the property should be the fully qualified class name
* of the factory class that will create an initial context.
* This property may be specified in the environment parameter
* passed to the initial context constructor, an applet parameter,
* a system property, or an application resource file.
* If it is not specified in any of these sources,
* NoInitialContextException is thrown when an initial
* context is required to complete an operation.
*
* The value of this constant is "java.naming.factory.initial".
*
* @see InitialContext
* @see javax.naming.directory.InitialDirContext
* @see javax.naming.spi.NamingManager#getInitialContext
* @see javax.naming.spi.InitialContextFactory
* @see NoInitialContextException
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
* @see #APPLET
*/
String INITIAL_CONTEXT_FACTORY = "java.naming.factory.initial";
/**
* Constant that holds the name of the environment property
* for specifying the list of object factories to use. The value
* of the property should be a colon-separated list of the fully
* qualified class names of factory classes that will create an object
* given information about the object.
* This property may be specified in the environment, an applet
* parameter, a system property, or one or more resource files.
*
* The value of this constant is "java.naming.factory.object".
*
* @see javax.naming.spi.NamingManager#getObjectInstance
* @see javax.naming.spi.ObjectFactory
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
* @see #APPLET
*/
String OBJECT_FACTORIES = "java.naming.factory.object";
/**
* Constant that holds the name of the environment property
* for specifying the list of state factories to use. The value
* of the property should be a colon-separated list of the fully
* qualified class names of state factory classes that will be used
* to get an object's state given the object itself.
* This property may be specified in the environment, an applet
* parameter, a system property, or one or more resource files.
*
* The value of this constant is "java.naming.factory.state".
*
* @see javax.naming.spi.NamingManager#getStateToBind
* @see javax.naming.spi.StateFactory
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
* @see #APPLET
* @since 1.3
*/
String STATE_FACTORIES = "java.naming.factory.state";
/**
* Constant that holds the name of the environment property
* for specifying the list of package prefixes to use when
* loading in URL context factories. The value
* of the property should be a colon-separated list of package
* prefixes for the class name of the factory class that will create
* a URL context factory.
* This property may be specified in the environment,
* an applet parameter, a system property, or one or more
* resource files.
* The prefix com.sun.jndi.url is always appended to
* the possibly empty list of package prefixes.
*
* The value of this constant is "java.naming.factory.url.pkgs".
*
* @see javax.naming.spi.NamingManager#getObjectInstance
* @see javax.naming.spi.NamingManager#getURLContext
* @see javax.naming.spi.ObjectFactory
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
* @see #APPLET
*/
String URL_PKG_PREFIXES = "java.naming.factory.url.pkgs";
/**
* Constant that holds the name of the environment property
* for specifying configuration information for the service provider
* to use. The value of the property should contain a URL string
* (e.g. "ldap://somehost:389").
* This property may be specified in the environment,
* an applet parameter, a system property, or a resource file.
* If it is not specified in any of these sources,
* the default configuration is determined by the service provider.
*
* The value of this constant is "java.naming.provider.url".
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
* @see #APPLET
*/
String PROVIDER_URL = "java.naming.provider.url";
/**
* Constant that holds the name of the environment property
* for specifying the DNS host and domain names to use for the
* JNDI URL context (for example, "dns://somehost/wiz.com").
* This property may be specified in the environment,
* an applet parameter, a system property, or a resource file.
* If it is not specified in any of these sources
* and the program attempts to use a JNDI URL containing a DNS name,
* a ConfigurationException will be thrown.
*
* The value of this constant is "java.naming.dns.url".
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
*/
String DNS_URL = "java.naming.dns.url";
/**
* Constant that holds the name of the environment property for
* specifying the authoritativeness of the service requested.
* If the value of the property is the string "true", it means
* that the access is to the most authoritative source (i.e. bypass
* any cache or replicas). If the value is anything else,
* the source need not be (but may be) authoritative.
* If unspecified, the value defaults to "false".
*
* The value of this constant is "java.naming.authoritative".
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
*/
String AUTHORITATIVE = "java.naming.authoritative";
/**
* Constant that holds the name of the environment property for
* specifying the batch size to use when returning data via the
* service's protocol. This is a hint to the provider to return
* the results of operations in batches of the specified size, so
* the provider can optimize its performance and usage of resources.
* The value of the property is the string representation of an
* integer.
* If unspecified, the batch size is determined by the service
* provider.
*
* The value of this constant is "java.naming.batchsize".
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
*/
String BATCHSIZE = "java.naming.batchsize";
/**
* Constant that holds the name of the environment property for
* specifying how referrals encountered by the service provider
* are to be processed. The value of the property is one of the
* following strings:
* The value of this constant is "java.naming.referral".
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
*/
String REFERRAL = "java.naming.referral";
/**
* Constant that holds the name of the environment property for
* specifying the security protocol to use.
* Its value is a string determined by the service provider
* (e.g. "ssl").
* If this property is unspecified,
* the behaviour is determined by the service provider.
*
* The value of this constant is "java.naming.security.protocol".
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
*/
String SECURITY_PROTOCOL = "java.naming.security.protocol";
/**
* Constant that holds the name of the environment property for
* specifying the security level to use.
* Its value is one of the following strings:
* "none", "simple", "strong".
* If this property is unspecified,
* the behaviour is determined by the service provider.
*
* The value of this constant is "java.naming.security.authentication".
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
*/
String SECURITY_AUTHENTICATION = "java.naming.security.authentication";
/**
* Constant that holds the name of the environment property for
* specifying the identity of the principal for authenticating
* the caller to the service. The format of the principal
* depends on the authentication scheme.
* If this property is unspecified,
* the behaviour is determined by the service provider.
*
* The value of this constant is "java.naming.security.principal".
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
*/
String SECURITY_PRINCIPAL = "java.naming.security.principal";
/**
* Constant that holds the name of the environment property for
* specifying the credentials of the principal for authenticating
* the caller to the service. The value of the property depends
* on the authentication scheme. For example, it could be a hashed
* password, clear-text password, key, certificate, and so on.
* If this property is unspecified,
* the behaviour is determined by the service provider.
*
* The value of this constant is "java.naming.security.credentials".
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
*/
String SECURITY_CREDENTIALS = "java.naming.security.credentials";
/**
* Constant that holds the name of the environment property for
* specifying the preferred language to use with the service.
* The value of the property is a colon-separated list of language
* tags as defined in RFC 1766.
* If this property is unspecified,
* the language preference is determined by the service provider.
*
* The value of this constant is "java.naming.language".
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
*/
String LANGUAGE = "java.naming.language";
/**
* Constant that holds the name of the environment property for
* specifying an applet for the initial context constructor to use
* when searching for other properties.
* The value of this property is the
* java.applet.Applet instance that is being executed.
* This property may be specified in the environment parameter
* passed to the initial context constructor.
* When this property is set, each property that the initial context
* constructor looks for in the system properties is first looked for
* in the applet's parameter list.
* If this property is unspecified, the initial context constructor
* will search for properties only in the environment parameter
* passed to it, the system properties, and application resource files.
*
* The value of this constant is "java.naming.applet".
*
* @see #addToEnvironment(String, Object)
* @see #removeFromEnvironment(String)
* @see InitialContext
*
* @since 1.3
*/
String APPLET = "java.naming.applet";
};
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.
*
* composeName("east", "wiz.com")
* might return "east.wiz.com".
* If instead this context is named "org/research", then
*
* composeName("user/jane", "org/research")
* might return "org/research/user/jane" while
*
* composeName("user/jane", "research")
* returns "research/user/jane".
*
* @param name
* a name relative to this context
* @param prefix
* the name of this context relative to one of its ancestors
* @return the composition of prefix and name
* @throws NamingException if a naming exception is encountered
*
* @see #composeName(String, String)
*/
public Name composeName(Name name, Name prefix)
throws NamingException;
/**
* Composes the name of this context with a name relative to
* this context.
* See {@link #composeName(Name, Name)} for details.
*
* @param name
* a name relative to this context
* @param prefix
* the name of this context relative to one of its ancestors
* @return the composition of prefix and name
* @throws NamingException if a naming exception is encountered
*/
public String composeName(String name, String prefix)
throws NamingException;
/**
* Adds a new environment property to the environment of this
* context. If the property already exists, its value is overwritten.
* See class description for more details on environment properties.
*
* @param propName
* the name of the environment property to add; may not be null
* @param propVal
* the value of the property to add; may not be null
* @return the previous value of the property, or null if the property was
* not in the environment before
* @throws NamingException if a naming exception is encountered
*
* @see #getEnvironment()
* @see #removeFromEnvironment(String)
*/
public Object addToEnvironment(String propName, Object propVal)
throws NamingException;
/**
* Removes an environment property from the environment of this
* context. See class description for more details on environment
* properties.
*
* @param propName
* the name of the environment property to remove; may not be null
* @return the previous value of the property, or null if the property was
* not in the environment
* @throws NamingException if a naming exception is encountered
*
* @see #getEnvironment()
* @see #addToEnvironment(String, Object)
*/
public Object removeFromEnvironment(String propName)
throws NamingException;
/**
* Retrieves the environment in effect for this context.
* See class description for more details on environment properties.
*
*
*
* If this property is not specified, the default is
* determined by the provider.
*
*