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WARDirContext.javaAPI DocApache Tomcat 6.0.1435889Fri Jul 20 04:20:36 BST 2007org.apache.naming.resources

WARDirContext

public class WARDirContext extends BaseDirContext
WAR Directory Context implementation.
author
Remy Maucherat
version
$Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (mar., 24 oct. 2006) $

Fields Summary
private static org.apache.juli.logging.Log
log
protected ZipFile
base
The WAR file.
protected Entry
entries
WAR entries.
Constructors Summary
public WARDirContext()
Builds a WAR directory context using the given environment.

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


                  
      
        super();
    
public WARDirContext(Hashtable env)
Builds a WAR directory context using the given environment.

        super(env);
    
protected WARDirContext(ZipFile base, Entry entries)
Constructor used for returning fake subcontexts.

        this.base = base;
        this.entries = entries;
    
Methods Summary
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. 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

        throw new OperationNotSupportedException();
    
public javax.naming.directory.DirContextcreateSubcontext(java.lang.String 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

        throw new OperationNotSupportedException();
    
public voiddestroySubcontext(java.lang.String 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

        throw new OperationNotSupportedException();
    
public javax.naming.directory.AttributesgetAttributes(java.lang.String 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

        return getAttributes(new CompositeName(name), attrIds);
    
public javax.naming.directory.AttributesgetAttributes(javax.naming.Name name, java.lang.String[] attrIds)
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

        
        Entry entry = null;
        if (name.isEmpty())
            entry = entries;
        else
            entry = treeLookup(name);
        if (entry == null)
            throw new NamingException
                (sm.getString("resources.notFound", name));
        
        ZipEntry zipEntry = entry.getEntry();

        ResourceAttributes attrs = new ResourceAttributes();
        attrs.setCreationDate(new Date(zipEntry.getTime()));
        attrs.setName(entry.getName());
        if (!zipEntry.isDirectory())
            attrs.setResourceType("");
        attrs.setContentLength(zipEntry.getSize());
        attrs.setLastModified(zipEntry.getTime());
        
        return attrs;
        
    
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 docBase;
    
public javax.naming.directory.DirContextgetSchema(java.lang.String 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

        throw new OperationNotSupportedException();
    
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

        throw new OperationNotSupportedException();
    
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. 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 list(new CompositeName(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

        if (name.isEmpty())
            return new NamingContextEnumeration(list(entries).iterator());
        Entry entry = treeLookup(name);
        if (entry == null)
            throw new NamingException
                (sm.getString("resources.notFound", name));
        return new NamingContextEnumeration(list(entry).iterator());
    
protected java.util.ArrayListlist(org.apache.naming.resources.WARDirContext$Entry entry)
List children as objects.

        
        ArrayList entries = new ArrayList();
        Entry[] children = entry.getChildren();
        Arrays.sort(children);
        NamingEntry namingEntry = null;
        
        for (int i = 0; i < children.length; i++) {
            ZipEntry current = children[i].getEntry();
            Object object = null;
            if (current.isDirectory()) {
                object = new WARDirContext(base, children[i]);
            } else {
                object = new WARResource(current);
            }
            namingEntry = new NamingEntry
                (children[i].getName(), object, NamingEntry.ENTRY);
            entries.add(namingEntry);
        }
        
        return entries;
        
    
public javax.naming.NamingEnumerationlistBindings(java.lang.String 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 listBindings(new CompositeName(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

        if (name.isEmpty())
            return new NamingContextBindingsEnumeration(list(entries).iterator(),
                    this);
        Entry entry = treeLookup(name);
        if (entry == null)
            throw new NamingException
                (sm.getString("resources.notFound", name));
        return new NamingContextBindingsEnumeration(list(entry).iterator(),
                this);
    
protected voidloadEntries()
Constructs a tree of the entries contained in a WAR file.


        try {

            Enumeration entryList = base.entries();
            entries = new Entry("/", new ZipEntry("/"));
            
            while (entryList.hasMoreElements()) {
                
                ZipEntry entry = (ZipEntry) entryList.nextElement();
                String name = normalize(entry);
                int pos = name.lastIndexOf('/");
                // Check that parent entries exist and, if not, create them.
                // This fixes a bug for war files that don't record separate
                // zip entries for the directories.
                int currentPos = -1;
                int lastPos = 0;
                while ((currentPos = name.indexOf('/", lastPos)) != -1) {
                    Name parentName = new CompositeName(name.substring(0, lastPos));
                    Name childName = new CompositeName(name.substring(0, currentPos));
                    String entryName = name.substring(lastPos, currentPos);
                    // Parent should have been created in last cycle through
                    // this loop
                    Entry parent = treeLookup(parentName);
                    Entry child = treeLookup(childName);
                    if (child == null) {
                        // Create a new entry for missing entry and strip off
                        // the leading '/' character and appended on by the
                        // normalize method and add '/' character to end to
                        // signify that it is a directory entry
                        String zipName = name.substring(1, currentPos) + "/";
                        child = new Entry(entryName, new ZipEntry(zipName));
                        if (parent != null)
                            parent.addChild(child);
                    }
                    // Increment lastPos
                    lastPos = currentPos + 1;
                }
                String entryName = name.substring(pos + 1, name.length());
                Name compositeName = new CompositeName(name.substring(0, pos));
                Entry parent = treeLookup(compositeName);
                Entry child = new Entry(entryName, entry);
                if (parent != null)
                    parent.addChild(child);
                
            }

        } catch (Exception e) {
        }

    
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

        return lookup(new CompositeName(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

        if (name.isEmpty())
            return this;
        Entry entry = treeLookup(name);
        if (entry == null)
            throw new NamingException
                (sm.getString("resources.notFound", name));
        ZipEntry zipEntry = entry.getEntry();
        if (zipEntry.isDirectory())
            return new WARDirContext(base, entry);
        else
            return new WARResource(entry.getEntry());
    
public java.lang.ObjectlookupLink(java.lang.String 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

        // Note : Links are not supported
        return lookup(name);
    
public voidmodifyAttributes(java.lang.String 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

        throw new OperationNotSupportedException();
    
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. 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

        throw new OperationNotSupportedException();
    
protected java.lang.Stringnormalize(java.util.zip.ZipEntry entry)
Normalize the name of an entry read from the Zip.


        String result = "/" + entry.getName();
        if (entry.isDirectory()) {
            result = result.substring(0, result.length() - 1);
        }
        return result;

    
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. 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

        throw new OperationNotSupportedException();
    
public voidrelease()
Release any resources allocated for this directory context.


        entries = null;
        if (base != null) {
            try {
                base.close();
            } catch (IOException e) {
                log.warn
                    ("Exception closing WAR File " + base.getName(), e);
            }
        }
        base = null;
        super.release();

    
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. 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

        throw new OperationNotSupportedException();
    
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. 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

        throw new OperationNotSupportedException();
    
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. 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

        throw new OperationNotSupportedException();
    
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

        throw new OperationNotSupportedException();
    
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

        throw new OperationNotSupportedException();
    
public voidsetDocBase(java.lang.String docBase)
Set the document root.

param
docBase The new document root
exception
IllegalArgumentException if the specified value is not supported by this implementation
exception
IllegalArgumentException if this would create a malformed URL



    // ------------------------------------------------------------- Properties


                                            
        

	// Validate the format of the proposed document root
	if (docBase == null)
	    throw new IllegalArgumentException
		(sm.getString("resources.null"));
	if (!(docBase.endsWith(".war")))
	    throw new IllegalArgumentException
		(sm.getString("warResources.notWar"));

	// Calculate a File object referencing this document base directory
	File base = new File(docBase);

	// Validate that the document base is an existing directory
	if (!base.exists() || !base.canRead() || base.isDirectory())
	    throw new IllegalArgumentException
		(sm.getString("warResources.invalidWar", docBase));
        try {
            this.base = new ZipFile(base);
        } catch (Exception e) {
	    throw new IllegalArgumentException
		(sm.getString("warResources.invalidWar", e.getMessage()));
        }
        super.setDocBase(docBase);

        loadEntries();

    
protected org.apache.naming.resources.WARDirContext$EntrytreeLookup(javax.naming.Name name)
Entry tree lookup.

        if (name.isEmpty())
            return entries;
        Entry currentEntry = entries;
        for (int i = 0; i < name.size(); i++) {
            if (name.get(i).length() == 0)
                continue;
            currentEntry = currentEntry.getChild(name.get(i));
            if (currentEntry == null)
                return null;
        }
        return currentEntry;
    
public voidunbind(java.lang.String 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

        throw new OperationNotSupportedException();