FileDocCategorySizeDatePackage
ProxyDirContext.javaAPI DocGlassfish v2 API61629Fri May 04 22:33:00 BST 2007org.apache.naming.resources

ProxyDirContext

public class ProxyDirContext extends Object implements DirContext
Proxy Directory Context implementation.
author
Remy Maucherat
version
$Revision: 1.6 $ $Date: 2007/05/05 05:33:00 $

Fields Summary
public static final String
CONTEXT
public static final String
HOST
protected ProxyDirContext
proxy
Proxy DirContext (either this or the real proxy).
protected Hashtable
env
Environment.
protected org.apache.naming.StringManager
sm
The string manager for this package.
protected DirContext
dirContext
Associated DirContext.
protected String
vPath
Virtual path.
protected String
hostName
Host name.
protected String
contextName
Context name.
protected String
cacheClassName
Cache class.
protected ResourceCache
cache
Cache.
protected int
cacheTTL
Cache TTL.
protected int
cacheObjectMaxSize
Max size of resources which will have their content cached.
protected NameNotFoundException
notFoundException
Immutable name not found exception.
protected String[]
nonCacheable
Non cacheable resources.
Constructors Summary
public ProxyDirContext(Hashtable env, DirContext dirContext)
Builds a proxy directory context using the given environment.



    // ----------------------------------------------------------- Constructors


                  
         
        this.env = env;
        this.dirContext = dirContext;
        if (dirContext instanceof BaseDirContext) {
            // Initialize parameters based on the associated dir context, like
            // the caching policy.
            BaseDirContext baseDirContext = (BaseDirContext) dirContext;
            if (baseDirContext.isCached()) {
                try {
                    cache = (ResourceCache) 
                        Class.forName(cacheClassName).newInstance();
                } catch (Exception e) {
                    //FIXME
                    e.printStackTrace();
                }
                cache.setCacheMaxSize(baseDirContext.getCacheMaxSize());
                cacheTTL = baseDirContext.getCacheTTL();
                cacheObjectMaxSize = baseDirContext.getCacheMaxSize() / 20;
            }
        }
        hostName = (String) env.get(HOST);
        contextName = (String) env.get(CONTEXT);
    
Methods Summary
public java.lang.ObjectaddToEnvironment(java.lang.String propName, java.lang.Object propVal)
Adds a new environment property to the environment of this context. If the property already exists, its value is overwritten.

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
exception
NamingException if a naming exception is encountered

        return dirContext.addToEnvironment(propName, propVal);
    
public voidbind(java.lang.String name, java.lang.Object obj)
Binds a name to an object.

param
name the name to bind; may not be empty
param
obj the object to bind; possibly null
exception
NameAlreadyBoundException if name is already bound
exception
InvalidAttributesException if object did not supply all mandatory attributes
exception
NamingException if a naming exception is encountered

        dirContext.bind(parseName(name), obj);
        cacheUnload(name);
    
public voidbind(javax.naming.Name name, java.lang.Object obj, javax.naming.directory.Attributes attrs)
Binds a name to an object, along with associated attributes. If attrs is null, the resulting binding will have the attributes associated with obj if obj is a DirContext, and no attributes otherwise. If attrs is non-null, the resulting binding will have attrs as its attributes; any attributes associated with obj are ignored.

param
name the name to bind; may not be empty
param
obj the object to bind; possibly null
param
attrs the attributes to associate with the binding
exception
NameAlreadyBoundException if name is already bound
exception
InvalidAttributesException if some "mandatory" attributes of the binding are not supplied
exception
NamingException if a naming exception is encountered

        dirContext.bind(parseName(name), obj, attrs);
        cacheUnload(name.toString());
    
public voidbind(java.lang.String name, java.lang.Object obj, javax.naming.directory.Attributes attrs)
Binds a name to an object, along with associated attributes.

param
name the name to bind; may not be empty
param
obj the object to bind; possibly null
param
attrs the attributes to associate with the binding
exception
NameAlreadyBoundException if name is already bound
exception
InvalidAttributesException if some "mandatory" attributes of the binding are not supplied
exception
NamingException if a naming exception is encountered

        dirContext.bind(parseName(name), obj, attrs);
        cacheUnload(name);
    
public voidbind(javax.naming.Name name, java.lang.Object obj)
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
exception
NameAlreadyBoundException if name is already bound
exception
InvalidAttributesException if object did not supply all mandatory attributes
exception
NamingException if a naming exception is encountered

        dirContext.bind(parseName(name), obj);
        cacheUnload(name.toString());
    
protected voidcacheLoad(CacheEntry entry)
Load entry into cache.


        String name = entry.name;

        // Retrieve missing info
        boolean exists = true;

        // Retrieving attributes
        if (entry.attributes == null) {
            try {
                Attributes attributes = dirContext.getAttributes(entry.name);
                if (!(attributes instanceof ResourceAttributes)) {
                    entry.attributes = 
                        new ResourceAttributes(attributes);
                } else {
                    entry.attributes = (ResourceAttributes) attributes;
                }
            } catch (NamingException e) {
                exists = false;
            }
        }

        // Retriving object
        if ((exists) && (entry.resource == null) && (entry.context == null)) {
            try {
                Object object = dirContext.lookup(name);
                if (object instanceof InputStream) {
                    entry.resource = new Resource((InputStream) object);
                } else if (object instanceof DirContext) {
                    entry.context = (DirContext) object;
                } else if (object instanceof Resource) {
                    entry.resource = (Resource) object;
                } else {
                    entry.resource = new Resource(new ByteArrayInputStream
                        (object.toString().getBytes()));
                }
            } catch (NamingException e) {
                exists = false;
            }
        }

        // Load object content
        if ((exists) && (entry.resource != null) 
            && (entry.resource.getContent() == null) 
            && (entry.attributes.getContentLength() >= 0)
            && (entry.attributes.getContentLength() < 
                (cacheObjectMaxSize * 1024))) {
            int length = (int) entry.attributes.getContentLength();
            // The entry size is 1 + the resource size in KB, if it will be 
            // cached
            entry.size += (entry.attributes.getContentLength() / 1024);
            InputStream is = null;
            try {
                is = entry.resource.streamContent();
                int pos = 0;
                byte[] b = new byte[length];
                while (pos < length) {
                    int n = is.read(b, pos, length - pos);
                    if (n < 0)
                        break;
                    pos = pos + n;
                }
                entry.resource.setContent(b);
            } catch (IOException e) {
                ; // Ignore
            } finally {
                try {
                    if (is != null)
                        is.close();
                } catch (IOException e) {
                    ; // Ignore
                }
            }
        }

        // Set existence flag
        entry.exists = exists;

        // Set timestamp
        entry.timestamp = System.currentTimeMillis() + cacheTTL;

        // Add new entry to cache
        synchronized (cache) {
            // Check cache size, and remove elements if too big
            if ((cache.lookup(name) == null) && cache.allocate(entry.size)) {
                cache.load(entry);
            }
        }

    
protected CacheEntrycacheLookup(java.lang.String name)
Lookup in cache.

        if (cache == null)
            return (null);
        if (name == null)
            name = "";
        for (int i = 0; i < nonCacheable.length; i++) {
            if (name.startsWith(nonCacheable[i])) {
                return (null);
            }
        }
        CacheEntry cacheEntry = cache.lookup(name);
        if (cacheEntry == null) {
            cacheEntry = new CacheEntry();
            cacheEntry.name = name;
            // Load entry
            cacheLoad(cacheEntry);
        } else {
            if (!validate(cacheEntry)) {
                if (!revalidate(cacheEntry)) {
                    cacheUnload(cacheEntry.name);
                    return (null);
                } else {
                    cacheEntry.timestamp = 
                        System.currentTimeMillis() + cacheTTL;
                }
            }
            cacheEntry.accessCount++;
        }
        return (cacheEntry);
    
protected booleancacheUnload(java.lang.String name)
Remove entry from cache.

        if (cache == null)
            return false;
        synchronized (cache) {
            return cache.unload(name);
        }
    
public voidclose()
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.

exception
NamingException if a naming exception is encountered

        dirContext.close();
    
public javax.naming.NamecomposeName(javax.naming.Name name, javax.naming.Name prefix)
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.

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
exception
NamingException if a naming exception is encountered

        prefix = (Name) prefix.clone();
	return prefix.addAll(name);
    
public java.lang.StringcomposeName(java.lang.String name, java.lang.String prefix)
Composes the name of this context with a name relative to this context.

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
exception
NamingException if a naming exception is encountered

        return prefix + "/" + name;
    
public javax.naming.ContextcreateSubcontext(javax.naming.Name name)
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
exception
NameAlreadyBoundException if name is already bound
exception
InvalidAttributesException if creation of the subcontext requires specification of mandatory attributes
exception
NamingException if a naming exception is encountered

        Context context = dirContext.createSubcontext(parseName(name));
        cacheUnload(name.toString());
        return context;
    
public javax.naming.ContextcreateSubcontext(java.lang.String name)
Creates and binds a new context.

param
name the name of the context to create; may not be empty
return
the newly created context
exception
NameAlreadyBoundException if name is already bound
exception
InvalidAttributesException if creation of the subcontext requires specification of mandatory attributes
exception
NamingException if a naming exception is encountered

        Context context = dirContext.createSubcontext(parseName(name));
        cacheUnload(name);
        return context;
    
public javax.naming.directory.DirContextcreateSubcontext(javax.naming.Name name, javax.naming.directory.Attributes attrs)
Creates and binds a new context, along with associated attributes. This method creates a new subcontext with the given name, binds it in the target context (that named by all but terminal atomic component of the name), and associates the supplied attributes with the newly created object. All intermediate and target contexts must already exist. If attrs is null, this method is equivalent to Context.createSubcontext().

param
name the name of the context to create; may not be empty
param
attrs the attributes to associate with the newly created context
return
the newly created context
exception
NameAlreadyBoundException if the name is already bound
exception
InvalidAttributesException if attrs does not contain all the mandatory attributes required for creation
exception
NamingException if a naming exception is encountered

        DirContext context = 
            dirContext.createSubcontext(parseName(name), attrs);
        cacheUnload(name.toString());
        return context;
    
public javax.naming.directory.DirContextcreateSubcontext(java.lang.String name, javax.naming.directory.Attributes attrs)
Creates and binds a new context, along with associated attributes.

param
name the name of the context to create; may not be empty
param
attrs the attributes to associate with the newly created context
return
the newly created context
exception
NameAlreadyBoundException if the name is already bound
exception
InvalidAttributesException if attrs does not contain all the mandatory attributes required for creation
exception
NamingException if a naming exception is encountered

        DirContext context = 
            dirContext.createSubcontext(parseName(name), attrs);
        cacheUnload(name);
        return context;
    
public voiddestroySubcontext(javax.naming.Name name)
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.

param
name the name of the context to be destroyed; may not be empty
exception
NameNotFoundException if an intermediate context does not exist
exception
NotContextException if the name is bound but does not name a context, or does not name a context of the appropriate type

        dirContext.destroySubcontext(parseName(name));
        cacheUnload(name.toString());
    
public voiddestroySubcontext(java.lang.String name)
Destroys the named context and removes it from the namespace.

param
name the name of the context to be destroyed; may not be empty
exception
NameNotFoundException if an intermediate context does not exist
exception
NotContextException if the name is bound but does not name a context, or does not name a context of the appropriate type

        dirContext.destroySubcontext(parseName(name));
        cacheUnload(name);
    
public javax.naming.directory.AttributesgetAttributes(javax.naming.Name name)
Retrieves all of the attributes associated with a named object.

return
the set of attributes associated with name. Returns an empty attribute set if name has no attributes; never null.
param
name the name of the object from which to retrieve attributes
exception
NamingException if a naming exception is encountered

        CacheEntry entry = cacheLookup(name.toString());
        if (entry != null) {
            if (!entry.exists) {
                throw notFoundException;
            }
            return entry.attributes;
        }
        Attributes attributes = dirContext.getAttributes(parseName(name));
        if (!(attributes instanceof ResourceAttributes)) {
            attributes = new ResourceAttributes(attributes);
        }
        return attributes;
    
public javax.naming.directory.AttributesgetAttributes(java.lang.String name)
Retrieves all of the attributes associated with a named object.

return
the set of attributes associated with name
param
name the name of the object from which to retrieve attributes
exception
NamingException if a naming exception is encountered

        CacheEntry entry = cacheLookup(name);
        if (entry != null) {
            if (!entry.exists) {
                throw notFoundException;
            }
            return entry.attributes;
        }
        Attributes attributes = dirContext.getAttributes(parseName(name));
        if (!(attributes instanceof ResourceAttributes)) {
            attributes = new ResourceAttributes(attributes);
        }
        return attributes;
    
public javax.naming.directory.AttributesgetAttributes(javax.naming.Name name, java.lang.String[] attrIds)
Retrieves selected attributes associated with a named object. See the class description regarding attribute models, attribute type names, and operational attributes.

return
the requested attributes; never null
param
name the name of the object from which to retrieve attributes
param
attrIds the identifiers of the attributes to retrieve. null indicates that all attributes should be retrieved; an empty array indicates that none should be retrieved
exception
NamingException if a naming exception is encountered

        Attributes attributes = 
            dirContext.getAttributes(parseName(name), attrIds);
        if (!(attributes instanceof ResourceAttributes)) {
            attributes = new ResourceAttributes(attributes);
        }
        return attributes;
    
public javax.naming.directory.AttributesgetAttributes(java.lang.String name, java.lang.String[] attrIds)
Retrieves selected attributes associated with a named object.

return
the requested attributes; never null
param
name the name of the object from which to retrieve attributes
param
attrIds the identifiers of the attributes to retrieve. null indicates that all attributes should be retrieved; an empty array indicates that none should be retrieved
exception
NamingException if a naming exception is encountered

        Attributes attributes = 
            dirContext.getAttributes(parseName(name), attrIds);
        if (!(attributes instanceof ResourceAttributes)) {
            attributes = new ResourceAttributes(attributes);
        }
        return attributes;
     
public ResourceCachegetCache()
Get the cache used for this context.



    // --------------------------------------------------------- Public Methods


                
       
        return cache;
    
public java.lang.StringgetContextName()
Return the context name.

        return this.contextName;
    
public javax.naming.directory.DirContextgetDirContext()
Return the actual directory context we are wrapping.

        return this.dirContext;
    
public java.lang.StringgetDocBase()
Return the document root for this component.

        if (dirContext instanceof BaseDirContext)
            return ((BaseDirContext) dirContext).getDocBase();
        else
            return "";
    
public java.util.HashtablegetEnvironment()
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().

return
the environment of this context; never null
exception
NamingException if a naming exception is encountered

        return dirContext.getEnvironment();
    
public java.lang.StringgetHostName()
Return the host name.

        return this.hostName;
    
public java.lang.StringgetNameInNamespace()
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
exception
OperationNotSupportedException if the naming system does not have the notion of a full name
exception
NamingException if a naming exception is encountered

        return dirContext.getNameInNamespace();
    
public javax.naming.NameParsergetNameParser(javax.naming.Name name)
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
exception
NamingException if a naming exception is encountered

        return dirContext.getNameParser(parseName(name));
    
public javax.naming.NameParsergetNameParser(java.lang.String name)
Retrieves the parser associated with the named context.

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
exception
NamingException if a naming exception is encountered

        return dirContext.getNameParser(parseName(name));
    
public javax.naming.directory.DirContextgetSchema(javax.naming.Name name)
Retrieves the schema associated with the named object. The schema describes rules regarding the structure of the namespace and the attributes stored within it. The schema specifies what types of objects can be added to the directory and where they can be added; what mandatory and optional attributes an object can have. The range of support for schemas is directory-specific.

param
name the name of the object whose schema is to be retrieved
return
the schema associated with the context; never null
exception
OperationNotSupportedException if schema not supported
exception
NamingException if a naming exception is encountered

        return dirContext.getSchema(parseName(name));
    
public javax.naming.directory.DirContextgetSchema(java.lang.String name)
Retrieves the schema associated with the named object.

param
name the name of the object whose schema is to be retrieved
return
the schema associated with the context; never null
exception
OperationNotSupportedException if schema not supported
exception
NamingException if a naming exception is encountered

        return dirContext.getSchema(parseName(name));
    
public javax.naming.directory.DirContextgetSchemaClassDefinition(javax.naming.Name name)
Retrieves a context containing the schema objects of the named object's class definitions.

param
name the name of the object whose object class definition is to be retrieved
return
the DirContext containing the named object's class definitions; never null
exception
OperationNotSupportedException if schema not supported
exception
NamingException if a naming exception is encountered

        return dirContext.getSchemaClassDefinition(parseName(name));
    
public javax.naming.directory.DirContextgetSchemaClassDefinition(java.lang.String name)
Retrieves a context containing the schema objects of the named object's class definitions.

param
name the name of the object whose object class definition is to be retrieved
return
the DirContext containing the named object's class definitions; never null
exception
OperationNotSupportedException if schema not supported
exception
NamingException if a naming exception is encountered

        return dirContext.getSchemaClassDefinition(parseName(name));
    
public javax.naming.NamingEnumerationlist(javax.naming.Name name)
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.
exception
NamingException if a naming exception is encountered

        return dirContext.list(parseName(name));
    
public javax.naming.NamingEnumerationlist(java.lang.String name)
Enumerates the names bound in the named context, along with the class names of objects bound to them.

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.
exception
NamingException if a naming exception is encountered

        return dirContext.list(parseName(name));
    
public javax.naming.NamingEnumerationlistBindings(javax.naming.Name name)
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.

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.
exception
NamingException if a naming exception is encountered

        return dirContext.listBindings(parseName(name));
    
public javax.naming.NamingEnumerationlistBindings(java.lang.String name)
Enumerates the names bound in the named context, along with the objects bound to them.

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.
exception
NamingException if a naming exception is encountered

        return dirContext.listBindings(parseName(name));
    
public java.lang.Objectlookup(javax.naming.Name name)
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
exception
NamingException if a naming exception is encountered

        CacheEntry entry = cacheLookup(name.toString());
        if (entry != null) {
            if (!entry.exists) {
                throw notFoundException;
            }
            if (entry.resource != null) {
                // Check content caching.
                return entry.resource;
            } else {
                return entry.context;
            }
        }
        Object object = dirContext.lookup(parseName(name));
        if (object instanceof InputStream)
            return new Resource((InputStream) object);
        else
            return object;
    
public java.lang.Objectlookup(java.lang.String name)
Retrieves the named object.

param
name the name of the object to look up
return
the object bound to name
exception
NamingException if a naming exception is encountered

        CacheEntry entry = cacheLookup(name);
        if (entry != null) {
            if (!entry.exists) {
                throw notFoundException;
            }
            if (entry.resource != null) {
                return entry.resource;
            } else {
                return entry.context;
            }
        }
        Object object = dirContext.lookup(parseName(name));
        if (object instanceof InputStream) {
            return new Resource((InputStream) object);
        } else if (object instanceof DirContext) {
            return object;
        } else if (object instanceof Resource) {
            return object;
        } else {
            return new Resource(new ByteArrayInputStream
                (object.toString().getBytes()));
        }
    
public CacheEntrylookupCache(java.lang.String name)
Retrieves the named object as a cache entry, without any exception.

param
name the name of the object to look up
return
the cache entry bound to name

        CacheEntry entry = cacheLookup(name);
        if (entry == null) {
            entry = new CacheEntry();
            entry.name = name;
            try {
                Object object = dirContext.lookup(parseName(name));
                if (object instanceof InputStream) {
                    entry.resource = new Resource((InputStream) object);
                } else if (object instanceof DirContext) {
                    entry.context = (DirContext) object;
                } else if (object instanceof Resource) {
                    entry.resource = (Resource) object;
                } else {
                    entry.resource = new Resource(new ByteArrayInputStream
                        (object.toString().getBytes()));
                }
                Attributes attributes = dirContext.getAttributes(parseName(name));
                if (!(attributes instanceof ResourceAttributes)) {
                    attributes = new ResourceAttributes(attributes);
                }
                entry.attributes = (ResourceAttributes) attributes;
            } catch (NamingException e) {
                entry.exists = false;
            }
        }
        return entry;
    
public java.lang.ObjectlookupLink(javax.naming.Name name)
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).
exception
NamingException if a naming exception is encountered

        return dirContext.lookupLink(parseName(name));
    
public java.lang.ObjectlookupLink(java.lang.String name)
Retrieves the named object, following links except for the terminal atomic component of the name.

param
name the name of the object to look up
return
the object bound to name, not following the terminal link (if any).
exception
NamingException if a naming exception is encountered

        return dirContext.lookupLink(parseName(name));
    
public voidmodifyAttributes(javax.naming.Name name, int mod_op, javax.naming.directory.Attributes attrs)
Modifies the attributes associated with a named object. The order of the modifications is not specified. Where possible, the modifications are performed atomically.

param
name the name of the object whose attributes will be updated
param
mod_op the modification operation, one of: ADD_ATTRIBUTE, REPLACE_ATTRIBUTE, REMOVE_ATTRIBUTE
param
attrs the attributes to be used for the modification; may not be null
exception
AttributeModificationException if the modification cannot be completed successfully
exception
NamingException if a naming exception is encountered

        dirContext.modifyAttributes(parseName(name), mod_op, attrs);
        cacheUnload(name.toString());
    
public voidmodifyAttributes(java.lang.String name, int mod_op, javax.naming.directory.Attributes attrs)
Modifies the attributes associated with a named object.

param
name the name of the object whose attributes will be updated
param
mod_op the modification operation, one of: ADD_ATTRIBUTE, REPLACE_ATTRIBUTE, REMOVE_ATTRIBUTE
param
attrs the attributes to be used for the modification; may not be null
exception
AttributeModificationException if the modification cannot be completed successfully
exception
NamingException if a naming exception is encountered

        dirContext.modifyAttributes(parseName(name), mod_op, attrs);
        cacheUnload(name);
    
public voidmodifyAttributes(javax.naming.Name name, javax.naming.directory.ModificationItem[] mods)
Modifies the attributes associated with a named object using an an ordered list of modifications. The modifications are performed in the order specified. Each modification specifies a modification operation code and an attribute on which to operate. Where possible, the modifications are performed atomically.

param
name the name of the object whose attributes will be updated
param
mods an ordered sequence of modifications to be performed; may not be null
exception
AttributeModificationException if the modification cannot be completed successfully
exception
NamingException if a naming exception is encountered

        dirContext.modifyAttributes(parseName(name), mods);
        cacheUnload(name.toString());
    
public voidmodifyAttributes(java.lang.String name, javax.naming.directory.ModificationItem[] mods)
Modifies the attributes associated with a named object using an an ordered list of modifications.

param
name the name of the object whose attributes will be updated
param
mods an ordered sequence of modifications to be performed; may not be null
exception
AttributeModificationException if the modification cannot be completed successfully
exception
NamingException if a naming exception is encountered

        dirContext.modifyAttributes(parseName(name), mods);
        cacheUnload(name);
    
protected java.lang.StringparseName(java.lang.String name)
Parses a name.

return
the parsed name

        return name;
    
protected javax.naming.NameparseName(javax.naming.Name name)
Parses a name.

return
the parsed name

        return name;
    
public voidrebind(javax.naming.Name name, java.lang.Object obj)
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
exception
InvalidAttributesException if object did not supply all mandatory attributes
exception
NamingException if a naming exception is encountered

        dirContext.rebind(parseName(name), obj);
        cacheUnload(name.toString());
    
public voidrebind(java.lang.String name, java.lang.Object obj)
Binds a name to an object, overwriting any existing binding.

param
name the name to bind; may not be empty
param
obj the object to bind; possibly null
exception
InvalidAttributesException if object did not supply all mandatory attributes
exception
NamingException if a naming exception is encountered

        dirContext.rebind(parseName(name), obj);
        cacheUnload(name);
    
public voidrebind(javax.naming.Name name, java.lang.Object obj, javax.naming.directory.Attributes attrs)
Binds a name to an object, along with associated attributes, overwriting any existing binding. If attrs is null and obj is a DirContext, the attributes from obj are used. If attrs is null and obj is not a DirContext, any existing attributes associated with the object already bound in the directory remain unchanged. If attrs is non-null, any existing attributes associated with the object already bound in the directory are removed and attrs is associated with the named object. If obj is a DirContext and attrs is non-null, the attributes of obj are ignored.

param
name the name to bind; may not be empty
param
obj the object to bind; possibly null
param
attrs the attributes to associate with the binding
exception
InvalidAttributesException if some "mandatory" attributes of the binding are not supplied
exception
NamingException if a naming exception is encountered

        dirContext.rebind(parseName(name), obj, attrs);
        cacheUnload(name.toString());
    
public voidrebind(java.lang.String name, java.lang.Object obj, javax.naming.directory.Attributes attrs)
Binds a name to an object, along with associated attributes, overwriting any existing binding.

param
name the name to bind; may not be empty
param
obj the object to bind; possibly null
param
attrs the attributes to associate with the binding
exception
InvalidAttributesException if some "mandatory" attributes of the binding are not supplied
exception
NamingException if a naming exception is encountered

        dirContext.rebind(parseName(name), obj, attrs);
        cacheUnload(name);
    
public java.lang.ObjectremoveFromEnvironment(java.lang.String propName)
Removes an environment property from the environment of this context.

param
propName the name of the environment property to remove; may not be null
exception
NamingException if a naming exception is encountered

        return dirContext.removeFromEnvironment(propName);
    
public voidrename(javax.naming.Name oldName, javax.naming.Name newName)
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
exception
NameAlreadyBoundException if newName is already bound
exception
NamingException if a naming exception is encountered

        dirContext.rename(parseName(oldName), parseName(newName));
        cacheUnload(oldName.toString());
    
public voidrename(java.lang.String oldName, java.lang.String newName)
Binds a new name to the object bound to an old name, and unbinds the old name.

param
oldName the name of the existing binding; may not be empty
param
newName the name of the new binding; may not be empty
exception
NameAlreadyBoundException if newName is already bound
exception
NamingException if a naming exception is encountered

        dirContext.rename(parseName(oldName), parseName(newName));
        cacheUnload(oldName);
    
protected booleanrevalidate(CacheEntry entry)
Revalidate entry.

        // Get the attributes at the given path, and check the last 
        // modification date
        if (!entry.exists)
            return false;
        if (entry.attributes == null)
            return false;
        long lastModified = entry.attributes.getLastModified();
        long contentLength = entry.attributes.getContentLength();
        if (lastModified <= 0)
            return false;
        try {
            Attributes tempAttributes = dirContext.getAttributes(entry.name);
            ResourceAttributes attributes = null;
            if (!(tempAttributes instanceof ResourceAttributes)) {
                attributes = new ResourceAttributes(tempAttributes);
            } else {
                attributes = (ResourceAttributes) tempAttributes;
            }
            long lastModified2 = attributes.getLastModified();
            long contentLength2 = attributes.getContentLength();
            return (lastModified == lastModified2) 
                && (contentLength == contentLength2);
        } catch (NamingException e) {
            return false;
        }
    
public javax.naming.NamingEnumerationsearch(javax.naming.Name name, javax.naming.directory.Attributes matchingAttributes, java.lang.String[] attributesToReturn)
Searches in a single context for objects that contain a specified set of attributes, and retrieves selected attributes. The search is performed using the default SearchControls settings.

param
name the name of the context to search
param
matchingAttributes the attributes to search for. If empty or null, all objects in the target context are returned.
param
attributesToReturn the attributes to return. null indicates that all attributes are to be returned; an empty array indicates that none are to be returned.
return
a non-null enumeration of SearchResult objects. Each SearchResult contains the attributes identified by attributesToReturn and the name of the corresponding object, named relative to the context named by name.
exception
NamingException if a naming exception is encountered

        return dirContext.search(parseName(name), matchingAttributes, 
                                 attributesToReturn);
    
public javax.naming.NamingEnumerationsearch(java.lang.String name, javax.naming.directory.Attributes matchingAttributes, java.lang.String[] attributesToReturn)
Searches in a single context for objects that contain a specified set of attributes, and retrieves selected attributes.

param
name the name of the context to search
param
matchingAttributes the attributes to search for. If empty or null, all objects in the target context are returned.
param
attributesToReturn the attributes to return. null indicates that all attributes are to be returned; an empty array indicates that none are to be returned.
return
a non-null enumeration of SearchResult objects. Each SearchResult contains the attributes identified by attributesToReturn and the name of the corresponding object, named relative to the context named by name.
exception
NamingException if a naming exception is encountered

        return dirContext.search(parseName(name), matchingAttributes, 
                                 attributesToReturn);
    
public javax.naming.NamingEnumerationsearch(javax.naming.Name name, javax.naming.directory.Attributes matchingAttributes)
Searches in a single context for objects that contain a specified set of attributes. This method returns all the attributes of such objects. It is equivalent to supplying null as the atributesToReturn parameter to the method search(Name, Attributes, String[]).

param
name the name of the context to search
param
matchingAttributes the attributes to search for. If empty or null, all objects in the target context are returned.
return
a non-null enumeration of SearchResult objects. Each SearchResult contains the attributes identified by attributesToReturn and the name of the corresponding object, named relative to the context named by name.
exception
NamingException if a naming exception is encountered

        return dirContext.search(parseName(name), matchingAttributes);
    
public javax.naming.NamingEnumerationsearch(java.lang.String name, javax.naming.directory.Attributes matchingAttributes)
Searches in a single context for objects that contain a specified set of attributes.

param
name the name of the context to search
param
matchingAttributes the attributes to search for. If empty or null, all objects in the target context are returned.
return
a non-null enumeration of SearchResult objects. Each SearchResult contains the attributes identified by attributesToReturn and the name of the corresponding object, named relative to the context named by name.
exception
NamingException if a naming exception is encountered

        return dirContext.search(parseName(name), matchingAttributes);
    
public javax.naming.NamingEnumerationsearch(javax.naming.Name name, java.lang.String filter, javax.naming.directory.SearchControls cons)
Searches in the named context or object for entries that satisfy the given search filter. Performs the search as specified by the search controls.

param
name the name of the context or object to search
param
filter the filter expression to use for the search; may not be null
param
cons the search controls that control the search. If null, the default search controls are used (equivalent to (new SearchControls())).
return
an enumeration of SearchResults of the objects that satisfy the filter; never null
exception
InvalidSearchFilterException if the search filter specified is not supported or understood by the underlying directory
exception
InvalidSearchControlsException if the search controls contain invalid settings
exception
NamingException if a naming exception is encountered

        return dirContext.search(parseName(name), filter, cons);
    
public javax.naming.NamingEnumerationsearch(java.lang.String name, java.lang.String filter, javax.naming.directory.SearchControls cons)
Searches in the named context or object for entries that satisfy the given search filter. Performs the search as specified by the search controls.

param
name the name of the context or object to search
param
filter the filter expression to use for the search; may not be null
param
cons the search controls that control the search. If null, the default search controls are used (equivalent to (new SearchControls())).
return
an enumeration of SearchResults of the objects that satisfy the filter; never null
exception
InvalidSearchFilterException if the search filter specified is not supported or understood by the underlying directory
exception
InvalidSearchControlsException if the search controls contain invalid settings
exception
NamingException if a naming exception is encountered

        return dirContext.search(parseName(name), filter, cons);
    
public javax.naming.NamingEnumerationsearch(javax.naming.Name name, java.lang.String filterExpr, java.lang.Object[] filterArgs, javax.naming.directory.SearchControls cons)
Searches in the named context or object for entries that satisfy the given search filter. Performs the search as specified by the search controls.

param
name the name of the context or object to search
param
filterExpr the filter expression to use for the search. The expression may contain variables of the form "{i}" where i is a nonnegative integer. May not be null.
param
filterArgs the array of arguments to substitute for the variables in filterExpr. The value of filterArgs[i] will replace each occurrence of "{i}". If null, equivalent to an empty array.
param
cons the search controls that control the search. If null, the default search controls are used (equivalent to (new SearchControls())).
return
an enumeration of SearchResults of the objects that satisy the filter; never null
exception
ArrayIndexOutOfBoundsException if filterExpr contains {i} expressions where i is outside the bounds of the array filterArgs
exception
InvalidSearchControlsException if cons contains invalid settings
exception
InvalidSearchFilterException if filterExpr with filterArgs represents an invalid search filter
exception
NamingException if a naming exception is encountered

        return dirContext.search(parseName(name), filterExpr, filterArgs, 
                                 cons);
    
public javax.naming.NamingEnumerationsearch(java.lang.String name, java.lang.String filterExpr, java.lang.Object[] filterArgs, javax.naming.directory.SearchControls cons)
Searches in the named context or object for entries that satisfy the given search filter. Performs the search as specified by the search controls.

param
name the name of the context or object to search
param
filterExpr the filter expression to use for the search. The expression may contain variables of the form "{i}" where i is a nonnegative integer. May not be null.
param
filterArgs the array of arguments to substitute for the variables in filterExpr. The value of filterArgs[i] will replace each occurrence of "{i}". If null, equivalent to an empty array.
param
cons the search controls that control the search. If null, the default search controls are used (equivalent to (new SearchControls())).
return
an enumeration of SearchResults of the objects that satisy the filter; never null
exception
ArrayIndexOutOfBoundsException if filterExpr contains {i} expressions where i is outside the bounds of the array filterArgs
exception
InvalidSearchControlsException if cons contains invalid settings
exception
InvalidSearchFilterException if filterExpr with filterArgs represents an invalid search filter
exception
NamingException if a naming exception is encountered

        return dirContext.search(parseName(name), filterExpr, filterArgs, 
                                 cons);
    
public voidunbind(javax.naming.Name name)
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.

param
name the name to bind; may not be empty
exception
NameNotFoundException if an intermediate context does not exist
exception
NamingException if a naming exception is encountered

        dirContext.unbind(parseName(name));
        cacheUnload(name.toString());
    
public voidunbind(java.lang.String name)
Unbinds the named object.

param
name the name to bind; may not be empty
exception
NameNotFoundException if an intermediate context does not exist
exception
NamingException if a naming exception is encountered

        dirContext.unbind(parseName(name));
        cacheUnload(name);
    
protected booleanvalidate(CacheEntry entry)
Validate entry.

        if (((!entry.exists)
             || (entry.context != null)
             || ((entry.resource != null) 
                 && (entry.resource.getContent() != null)))
            && (System.currentTimeMillis() < entry.timestamp)) {
            return true;
        }
        return false;