NamingContext.java
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|---|---|---|
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org.apache.naming |
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Apache Tomcat 6 |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| DOC_COMMENT | Number of javadoc comment lines |  |
| JAVA0075 | JAVA0075 Method parameter hides field | |
| COMMENTS | Comment lines | |
| DECL_COMMENTS | Comments in declarations | |
| RETURNS | Number of return points from functions | |
| SIZE | Size of the file in bytes | |
| JAVA0036 | JAVA0036 Missing braces in while statement | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| LINES | Number of lines in the source file | |
| JAVA0112 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| CYCLOMATIC | Cyclomatic complexity | |
| PARAMS | Number of formal parameter declarations | |
| BLOCKS | Number of blocks | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| OPERATORS | Number of operators | |
| PROGRAM_LENGTH | Halstead program length | |
| OPERANDS | Number of operands | |
| EXITS | Procedure exits | |
| FUNCTIONS | Number of function declarations | |
| LOOPS | Number of loops | |
| ELOC | Effective lines of code | |
| LOC | Lines of code | |
| WHITESPACE | Number of whitespace lines | |
| COMPARISONS | Number of comparison operators | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| LINE_COMMENT | Number of line comments | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| NEST_DEPTH | Maximum nesting depth | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.naming;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Enumeration;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.LinkRef;
import javax.naming.CompositeName;
import javax.naming.NameParser;
import javax.naming.Referenceable;
import javax.naming.Reference;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.NameAlreadyBoundException;
import javax.naming.NameNotFoundException;
import javax.naming.NotContextException;
import javax.naming.InitialContext;
import javax.naming.OperationNotSupportedException;
import javax.naming.spi.NamingManager;
/**
* Catalina JNDI Context implementation.
*
* @author Remy Maucherat
* @version $Revision: 467222 $ $Date: 2006-10-23 23:17:11 -0400 (Mon, 23 Oct 2006) $
*/
public class NamingContext implements Context {
// -------------------------------------------------------------- Constants
/**
* Name parser for this context.
*/
protected static final NameParser nameParser = new NameParserImpl();
private static org.apache.juli.logging.Log log =
org.apache.juli.logging.LogFactory.getLog(NamingContext.class);
// ----------------------------------------------------------- Constructors
/**
* Builds a naming context using the given environment.
*/
public NamingContext(Hashtable env, String name)
throws NamingException {
this.bindings = new HashMap();
this.env = new Hashtable();
// FIXME ? Could be put in the environment ?
this.name = name;
// Populating the environment hashtable
if (env != null ) {
Enumeration envEntries = env.keys();
while (envEntries.hasMoreElements()) {
String entryName = (String) envEntries.nextElement();
addToEnvironment(entryName, env.get(entryName));
}
}
}
/**
* Builds a naming context using the given environment.
*/
public NamingContext(Hashtable env, String name, HashMap bindings)
throws NamingException {
this(env, name);
this.bindings = bindings;
}
// ----------------------------------------------------- Instance Variables
/**
* Environment.
*/
protected Hashtable env;
/**
* The string manager for this package.
*/
protected StringManager sm = StringManager.getManager(Constants.Package);
/**
* Bindings in this Context.
*/
protected HashMap bindings;
/**
* Name of the associated Catalina Context.
*/
protected String name;
// --------------------------------------------------------- Public Methods
// -------------------------------------------------------- Context Methods
/**
* 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
*/
public Object lookup(Name name)
throws NamingException {
return lookup(name, true);
}
/**
* 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
*/
public Object lookup(String name)
throws NamingException {
return lookup(new CompositeName(name), true);
}
/**
* 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
*/
public void bind(Name name, Object obj)
throws NamingException {
bind(name, obj, false);
}
/**
* 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
*/
public void bind(String name, Object obj)
throws NamingException {
bind(new CompositeName(name), 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.
* <p>
* 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
*/
public void rebind(Name name, Object obj)
throws NamingException {
bind(name, obj, true);
}
/**
* 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
*/
public void rebind(String name, Object obj)
throws NamingException {
rebind(new CompositeName(name), obj);
}
/**
* 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.
* <p>
* 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
*/
public void unbind(Name name)
throws NamingException {
checkWritable();
while ((!name.isEmpty()) && (name.get(0).length() == 0))
name = name.getSuffix(1);
if (name.isEmpty())
throw new NamingException
(sm.getString("namingContext.invalidName"));
NamingEntry entry = (NamingEntry) bindings.get(name.get(0));
if (entry == null) {
throw new NameNotFoundException
(sm.getString("namingContext.nameNotBound", name.get(0)));
}
if (name.size() > 1) {
if (entry.type == NamingEntry.CONTEXT) {
((Context) entry.value).unbind(name.getSuffix(1));
} else {
throw new NamingException
(sm.getString("namingContext.contextExpected"));
}
} else {
bindings.remove(name.get(0));
}
}
/**
* 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
*/
public void unbind(String name)
throws NamingException {
unbind(new CompositeName(name));
}
/**
* 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
*/
public void rename(Name oldName, Name newName)
throws NamingException {
Object value = lookup(oldName);
bind(newName, value);
unbind(oldName);
}
/**
* 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
*/
public void rename(String oldName, String newName)
throws NamingException {
rename(new CompositeName(oldName), new CompositeName(newName));
}
/**
* 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.
* <p>
* 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
*/
public NamingEnumeration list(Name name)
throws NamingException {
// Removing empty parts
while ((!name.isEmpty()) && (name.get(0).length() == 0))
name = name.getSuffix(1);
if (name.isEmpty()) {
return new NamingContextEnumeration(bindings.values().iterator());
}
NamingEntry entry = (NamingEntry) bindings.get(name.get(0));
if (entry == null) {
throw new NameNotFoundException
(sm.getString("namingContext.nameNotBound", name.get(0)));
}
if (entry.type != NamingEntry.CONTEXT) {
throw new NamingException
(sm.getString("namingContext.contextExpected"));
}
return ((Context) entry.value).list(name.getSuffix(1));
}
/**
* 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
*/
public NamingEnumeration list(String name)
throws NamingException {
return list(new CompositeName(name));
}
/**
* Enumerates the names bound in the named context, along with the
* objects bound to them. The contents of any subcontexts are not
* included.
* <p>
* 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
*/
public NamingEnumeration listBindings(Name name)
throws NamingException {
// Removing empty parts
while ((!name.isEmpty()) && (name.get(0).length() == 0))
name = name.getSuffix(1);
if (name.isEmpty()) {
return new NamingContextBindingsEnumeration(bindings.values().iterator(), this);
}
NamingEntry entry = (NamingEntry) bindings.get(name.get(0));
if (entry == null) {
throw new NameNotFoundException
(sm.getString("namingContext.nameNotBound", name.get(0)));
}
if (entry.type != NamingEntry.CONTEXT) {
throw new NamingException
(sm.getString("namingContext.contextExpected"));
}
return ((Context) entry.value).listBindings(name.getSuffix(1));
}
/**
* 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
*/
public NamingEnumeration listBindings(String name)
throws NamingException {
return listBindings(new CompositeName(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.
* <p>
* 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
*/
public void destroySubcontext(Name name)
throws NamingException {
checkWritable();
while ((!name.isEmpty()) && (name.get(0).length() == 0))
name = name.getSuffix(1);
if (name.isEmpty())
throw new NamingException
(sm.getString("namingContext.invalidName"));
NamingEntry entry = (NamingEntry) bindings.get(name.get(0));
if (entry == null) {
throw new NameNotFoundException
(sm.getString("namingContext.nameNotBound", name.get(0)));
}
if (name.size() > 1) {
if (entry.type == NamingEntry.CONTEXT) {
((Context) entry.value).unbind(name.getSuffix(1));
} else {
throw new NamingException
(sm.getString("namingContext.contextExpected"));
}
} else {
if (entry.type == NamingEntry.CONTEXT) {
((Context) entry.value).close();
bindings.remove(name.get(0));
} else {
throw new NotContextException
(sm.getString("namingContext.contextExpected"));
}
}
}
/**
* 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
*/
public void destroySubcontext(String name)
throws NamingException {
destroySubcontext(new CompositeName(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
*/
public Context createSubcontext(Name name)
throws NamingException {
checkWritable();
Context newContext = new NamingContext(env, this.name);
bind(name, newContext);
return newContext;
}
/**
* 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
*/
public Context createSubcontext(String name)
throws NamingException {
return createSubcontext(new CompositeName(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
*/
public Object lookupLink(Name name)
throws NamingException {
return lookup(name, false);
}
/**
* 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
*/
public Object lookupLink(String name)
throws NamingException {
return lookup(new CompositeName(name), false);
}
/**
* 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
*/
public NameParser getNameParser(Name name)
throws NamingException {
while ((!name.isEmpty()) && (name.get(0).length() == 0))
name = name.getSuffix(1);
if (name.isEmpty())
return nameParser;
if (name.size() > 1) {
Object obj = bindings.get(name.get(0));
if (obj instanceof Context) {
return ((Context) obj).getNameParser(name.getSuffix(1));
} else {
throw new NotContextException
(sm.getString("namingContext.contextExpected"));
}
}
return nameParser;
}
/**
* 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
*/
public NameParser getNameParser(String name)
throws NamingException {
return getNameParser(new CompositeName(name));
}
/**
* Composes the name of this context with a name relative to this context.
* <p>
* 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
*/
public Name composeName(Name name, Name prefix)
throws NamingException {
prefix = (Name) prefix.clone();
return prefix.addAll(name);
}
/**
* 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
*/
public String composeName(String name, String prefix)
throws NamingException {
return prefix + "/" + name;
}
/**
* 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
*/
public Object addToEnvironment(String propName, Object propVal)
throws NamingException {
return env.put(propName, propVal);
}
/**
* 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
*/
public Object removeFromEnvironment(String propName)
throws NamingException {
return env.remove(propName);
}
/**
* 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
*/
public Hashtable getEnvironment()
throws NamingException {
return env;
}
/**
* 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
*/
public void close()
throws NamingException {
env.clear();
}
/**
* Retrieves the full name of this context within its own namespace.
* <p>
* 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
*/
public String getNameInNamespace()
throws NamingException {
throw new OperationNotSupportedException
(sm.getString("namingContext.noAbsoluteName"));
//FIXME ?
}
// ------------------------------------------------------ Protected Methods
/**
* Retrieves the named object.
*
* @param name the name of the object to look up
* @param resolveLinks If true, the links will be resolved
* @return the object bound to name
* @exception NamingException if a naming exception is encountered
*/
protected Object lookup(Name name, boolean resolveLinks)
throws NamingException {
// Removing empty parts
while ((!name.isEmpty()) && (name.get(0).length() == 0))
name = name.getSuffix(1);
if (name.isEmpty()) {
// If name is empty, a newly allocated naming context is returned
return new NamingContext(env, this.name, bindings);
}
NamingEntry entry = (NamingEntry) bindings.get(name.get(0));
if (entry == null) {
throw new NameNotFoundException
(sm.getString("namingContext.nameNotBound", name.get(0)));
}
if (name.size() > 1) {
// If the size of the name is greater that 1, then we go through a
// number of subcontexts.
if (entry.type != NamingEntry.CONTEXT) {
throw new NamingException
(sm.getString("namingContext.contextExpected"));
}
return ((Context) entry.value).lookup(name.getSuffix(1));
} else {
if ((resolveLinks) && (entry.type == NamingEntry.LINK_REF)) {
String link = ((LinkRef) entry.value).getLinkName();
if (link.startsWith(".")) {
// Link relative to this context
return lookup(link.substring(1));
} else {
return (new InitialContext(env)).lookup(link);
}
} else if (entry.type == NamingEntry.REFERENCE) {
try {
Object obj = NamingManager.getObjectInstance
(entry.value, name, this, env);
if (obj != null) {
entry.value = obj;
entry.type = NamingEntry.ENTRY;
}
return obj;
} catch (NamingException e) {
throw e;
} catch (Exception e) {
log.warn(sm.getString
("namingContext.failResolvingReference"), e);
throw new NamingException(e.getMessage());
}
} else {
return entry.value;
}
}
}
/**
* 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
* @param rebind if true, then perform a rebind (ie, overwrite)
* @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
*/
protected void bind(Name name, Object obj, boolean rebind)
throws NamingException {
checkWritable();
while ((!name.isEmpty()) && (name.get(0).length() == 0))
name = name.getSuffix(1);
if (name.isEmpty())
throw new NamingException
(sm.getString("namingContext.invalidName"));
NamingEntry entry = (NamingEntry) bindings.get(name.get(0));
if (name.size() > 1) {
if (entry == null) {
throw new NameNotFoundException
(sm.getString("namingContext.nameNotBound", name.get(0)));
}
if (entry.type == NamingEntry.CONTEXT) {
if (rebind) {
((Context) entry.value).rebind(name.getSuffix(1), obj);
} else {
((Context) entry.value).bind(name.getSuffix(1), obj);
}
} else {
throw new NamingException
(sm.getString("namingContext.contextExpected"));
}
} else {
if ((!rebind) && (entry != null)) {
throw new NameAlreadyBoundException
(sm.getString("namingContext.alreadyBound", name.get(0)));
} else {
// Getting the type of the object and wrapping it within a new
// NamingEntry
Object toBind =
NamingManager.getStateToBind(obj, name, this, env);
if (toBind instanceof Context) {
entry = new NamingEntry(name.get(0), toBind,
NamingEntry.CONTEXT);
} else if (toBind instanceof LinkRef) {
entry = new NamingEntry(name.get(0), toBind,
NamingEntry.LINK_REF);
} else if (toBind instanceof Reference) {
entry = new NamingEntry(name.get(0), toBind,
NamingEntry.REFERENCE);
} else if (toBind instanceof Referenceable) {
toBind = ((Referenceable) toBind).getReference();
entry = new NamingEntry(name.get(0), toBind,
NamingEntry.REFERENCE);
} else {
entry = new NamingEntry(name.get(0), toBind,
NamingEntry.ENTRY);
}
bindings.put(name.get(0), entry);
}
}
}
/**
* Returns true if writing is allowed on this context.
*/
protected boolean isWritable() {
return ContextAccessController.isWritable(name);
}
/**
* Throws a naming exception is Context is not writable.
*/
protected void checkWritable()
throws NamingException {
if (!isWritable())
throw new NamingException(sm.getString("namingContext.readOnly"));
}
}
The table below shows all metrics for NamingContext.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 86.00 | Number of blocks | |
| BLOCK_COMMENT | 16.00 | Number of block comment lines | |
| COMMENTS | 411.00 | Comment lines | |
| COMMENT_DENSITY | 1.39 | Comment density | |
| COMPARISONS | 47.00 | Number of comparison operators | |
| CYCLOMATIC | 92.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 48.00 | Comments in declarations | |
| DOC_COMMENT | 377.00 | Number of javadoc comment lines | |
| ELOC | 296.00 | Effective lines of code | |
| EXEC_COMMENTS | 10.00 | Comments in executable code | |
| EXITS | 57.00 | Procedure exits | |
| FUNCTIONS | 35.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 84.63 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 148.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 1.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 5.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 7.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 0.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 24.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 0.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 0.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 5.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 3.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 21.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 5.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 0.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 0.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 1.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 0.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 0.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 908.00 | Number of lines in the source file | |
| LINE_COMMENT | 18.00 | Number of line comments | |
| LOC | 363.00 | Lines of code | |
| LOGICAL_LINES | 135.00 | Number of statements | |
| LOOPS | 8.00 | Number of loops | |
| NEST_DEPTH | 5.00 | Maximum nesting depth | |
| OPERANDS | 894.00 | Number of operands | |
| OPERATORS | 1675.00 | Number of operators | |
| PARAMS | 45.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 2569.00 | Halstead program length | |
| PROGRAM_VOCAB | 245.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 103.00 | Number of return points from functions | |
| SIZE | 33147.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 206.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 39.00 | Number of unique operators | |
| WHITESPACE | 134.00 | Number of whitespace lines | |