Package com.sun.enterprise.naming.java

Source Code of com.sun.enterprise.naming.java.javaURLContext

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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License").  You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
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package com.sun.enterprise.naming.java;

import java.util.*;
import java.io.*;
import javax.naming.*;

import com.sun.ejb.containers.BaseContainer;
import com.sun.enterprise.ComponentInvocation;
import com.sun.enterprise.InvocationManager;
import com.sun.enterprise.Switch;
import com.sun.enterprise.naming.*;
import com.sun.enterprise.util.ORBManager;
import com.sun.enterprise.distributedtx.UserTransactionImpl;
import com.sun.enterprise.distributedtx.TransactionSynchronizationRegistryImpl;

//START OF IASRI 4660742
import java.util.logging.*;
import com.sun.logging.*;
//END OF IASRI 4660742


/**
* This class is a context implementation for the java:comp namespace.
* The context determines the component id from the invocation manager
* of the component that is invoking the method and then looks up the
* object in that component's local namespace.
*/

public final class javaURLContext implements Context, Cloneable {

    // START OF IASRI 4660742
    static Logger _logger=LogDomains.getLogger(LogDomains.JNDI_LOGGER);
    // END OF IASRI 4660742

    // Global objects in component namespace
    private static final String ORB_STRING = "java:comp/ORB";
    private static final String HANDLE_DELEGATE = "java:comp/HandleDelegate";
    private static final String USER_TX = "java:comp/UserTransaction";
    private static final String EJB_CONTEXT = "java:comp/EJBContext";
    private static final String EJB_TIMER_SERVICE = "java:comp/TimerService";
    private static final String TRANSACTION_SYNC_REGISTRY =
                                "java:comp/TransactionSynchronizationRegistry";
    private static final String TRANSACTION_MGR = "java:pm/TransactionManager";
    public static final String APPSERVER_TRANSACTION_MGR = "java:appserver/TransactionManager";


    private static final boolean debug = false;

    private NamingManagerImpl namingManager;
    private Hashtable myEnv;
    //private Context ctx; XXX not needed ?
    private String myName="";

    private SerialContext serialContext = null;
   
    /**
     * Create a context with the specified environment.
     */
    public javaURLContext(Hashtable environment)
  throws NamingException
    {
        myEnv = (environment != null) ? (Hashtable)(environment.clone()) : null;
  if (namingManager == null ) {
    namingManager = (NamingManagerImpl)
      Switch.getSwitch().getNamingManager();
 
    }

    /**
     * Create a context with the specified name+environment.
     * Called only from NamingManagerImpl.
     */
    public javaURLContext(String name, Hashtable env)
  throws NamingException
    {
  this(env);
  this.myName = name;
    }

    /**
     * this constructor is called from SerialContext class
    */
    public javaURLContext(Hashtable env, SerialContext serialContext)
  throws NamingException
    {
  this(env);
  this.serialContext = serialContext;
    }
 
  /**
   * add SerialContext to preserve stickiness to cloned instance
   * why clone() : to avoid the case of multiple threads modifying
   * the context returned for ctx.lookup("java:com/env/ejb")
   */
    public javaURLContext addStickyContext(SerialContext serialContext)
      throws NamingException {
  try {
      javaURLContext jCtx = (javaURLContext)this.clone();
      jCtx.serialContext = serialContext;
      return jCtx;
  } catch (java.lang.CloneNotSupportedException ex) {    
       NamingException ne = new NamingException("problem with cloning javaURLContext instance");
       ne.initCause(ex);
       throw ne;
  }
    }

    /**
     * Lookup an object in the serial context.
     * @return the object that is being looked up.
     * @exception NamingException if there is a naming exception.
     */
    public Object lookup(String name) throws NamingException {
        if (_logger.isLoggable(Level.FINE))
      _logger.log(Level.FINE,"In javaURLContext.lookup, name = "+name + " serialcontext..." + serialContext);
         
  if ( name.equals("") ) {
      /** javadocs for Context.lookup:
       * 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).
       */
      return new javaURLContext(myName, myEnv);
  }

  String fullName = name;
  if ( !myName.equals("") ) {
      if ( myName.equals("java:") )
    fullName = myName + name;
      else
    fullName = myName + "/" + name;
  }

  try {
      if ( fullName.startsWith("java:comp/env") ) {
    // name is in component specific namespace      
          return namingManager.lookup(fullName, serialContext);
      }
      else {
    // name is for a global object
    if( fullName.equals(ORB_STRING) ) {
        // return the singleton ORB instance
        return ORBManager.getORB();
    }
    else if ( fullName.equals(USER_TX) ) {
        InvocationManager invMgr = Switch.getSwitch().getInvocationManager();
        ComponentInvocation inv = null;
        if (invMgr != null) {
            inv = invMgr.getCurrentInvocation();
        }
        if ((inv != null) && (inv.container != null)) {
            if (inv.container instanceof BaseContainer) {
          BaseContainer container = (BaseContainer) inv.container;
          container.checkUserTransactionLookup(inv);
      }
        }
        // UserTransactionImpl is mutable so return new instance
        return new UserTransactionImpl();
    }
    else if ( fullName.equals(EJB_TIMER_SERVICE) ) {
        // return the EJB Timer Service.  Only works for ejbs.
        return Switch.getSwitch().getContainerFactory().
                        getEJBContextObject("javax.ejb.TimerService");
    } else if ( fullName.equals(EJB_CONTEXT) ) {
                    // return the EJB Timer Service.  Only works for ejbs.
        return Switch.getSwitch().getContainerFactory().
                        getEJBContextObject("javax.ejb.EJBContext");
    } else if ( fullName.equals(HANDLE_DELEGATE) ) {
        return Switch.getSwitch().getHandleDelegate();
    }
    else if ( fullName.equals(TRANSACTION_MGR) ) {
        return Switch.getSwitch().getContainerFactory().getTransactionMgr();
    }
    else if ( fullName.equals(APPSERVER_TRANSACTION_MGR) ) {
        return com.sun.enterprise.transaction.TransactionManagerHelper.getTransactionManager();
    }
    else if ( fullName.equals(TRANSACTION_SYNC_REGISTRY) ) {
        return TransactionSynchronizationRegistryImpl.getInstance();
    }
    else {
        // try NamingManager     
      return namingManager.lookup(fullName, serialContext);
    }
      }
  } catch ( NamingException ex ) {
      throw ex;
  } catch ( Exception ex ) {
      throw (NamingException)(new NameNotFoundException("No object bound for "+fullName)).initCause(ex);
  }
    }

    /**
     * Lookup a name in either the cosnaming or serial context.
     * @return the object that is being looked up.
     * @exception NamingException if there is a naming exception.
     */
    public Object lookup(Name name) throws NamingException {
        // Flat namespace; no federation; just call string version
        return lookup(name.toString());
    }

    /**
     * Bind an object in the namespace. Binds the reference to the
     * actual object in either the cosnaming or serial context.
     * @exception NamingException if there is a naming exception.
     */
    public void bind(String name, Object obj) throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }

    /**
     * Bind an object in the namespace. Binds the reference to the
     * actual object in either the cosnaming or serial context.
     * @exception NamingException if there is a naming exception.
     */
    public void bind(Name name, Object obj) throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }

    /**
     * Rebind an object in the namespace. Rebinds the reference to the
     * actual object in either the cosnaming or serial context.
     * @exception NamingException if there is a naming exception.
     */
    public void rebind(String name, Object obj) throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }

    /**
     * Rebind an object in the namespace. Rebinds the reference to the
     * actual object in either the cosnaming or serial context.
     * @exception NamingException if there is a naming exception.
     */
    public void rebind(Name name, Object obj) throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }

    /**
     * Unbind an object from the namespace.
     * @exception NamingException if there is a naming exception.
     */
    public void unbind(String name) throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }

    /**
     * Unbind an object from the namespace.
     * @exception NamingException if there is a naming exception.
     */
    public void unbind(Name name) throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }

    /**
     * The rename operation is not supported by this context. It throws
     * an OperationNotSupportedException.
     */
    public void rename(String oldname, String newname) throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }

    /**
     * The rename operation is not supported by this context. It throws
     * an OperationNotSupportedException.
     */
    public void rename(Name oldname, Name newname)
            throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }

    /**
     * The destroySubcontext operation is not supported by this context.
     * It throws an OperationNotSupportedException.
     */
    public void destroySubcontext(String name) throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }

    /**
     * The destroySubcontext operation is not supported by this context.
     * It throws an OperationNotSupportedException.
     */
    public void destroySubcontext(Name name) throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }

    public Context createSubcontext(String name) throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }

    public Context createSubcontext(Name name) throws NamingException {
  throw new NamingException("java:comp namespace cannot be modified");
    }


    /**
     * Lists the contents of a context or subcontext. The operation is
     * delegated to the serial context.
     * @return an enumeration of the contents of the context.
     * @exception NamingException if there is a naming exception.
     */
    public NamingEnumeration list(String name)
            throws NamingException {
        if (name.equals("")) {
            // listing this context
      if ( namingManager == null )
    throw new NamingException();
      return namingManager.list(myName);
        }

        // Check if 'name' names a context
        Object target = lookup(name);
        if (target instanceof Context) {
            return ((Context)target).list("");
        }
        throw new NotContextException(name + " cannot be listed");
    }

    /**
     * Lists the contents of a context or subcontext. The operation is
     * delegated to the serial context.
     * @return an enumeration of the contents of the context.
     * @exception NamingException if there is a naming exception.
     */
    public NamingEnumeration list(Name name)
            throws NamingException {
        // Flat namespace; no federation; just call string version
        return list(name.toString());
    }

    /**
     * Lists the bindings of a context or subcontext. The operation is
     * delegated to the serial context.
     * @return an enumeration of the bindings of the context.
     * @exception NamingException if there is a naming exception.
     */
    public NamingEnumeration listBindings(String name)
            throws NamingException {
        if (name.equals("")) {
            // listing this context
      if ( namingManager == null )
    throw new NamingException();
      return namingManager.listBindings(myName);
        }

        // Perhaps 'name' names a context
        Object target = lookup(name);
        if (target instanceof Context) {
            return ((Context)target).listBindings("");
        }
        throw new NotContextException(name + " cannot be listed");
    }

    /**
     * Lists the bindings of a context or subcontext. The operation is
     * delegated to the serial context.
     * @return an enumeration of the bindings of the context.
     * @exception NamingException if there is a naming exception.
     */
    public NamingEnumeration listBindings(Name name)
            throws NamingException {
        // Flat namespace; no federation; just call string version
        return listBindings(name.toString());
    }

    /**
     * This context does not treat links specially. A lookup operation is
     * performed.
     */
    public Object lookupLink(String name) throws NamingException {
        // This flat context does not treat links specially
        return lookup(name);
    }

    /**
     * This context does not treat links specially. A lookup operation is
     * performed.
     */
    public Object lookupLink(Name name) throws NamingException {
        // Flat namespace; no federation; just call string version
        return lookupLink(name.toString());
    }

    /**
     * Return the name parser for the specified name.
     * @return the NameParser instance.
     * @exception NamingException if there is an exception.
     */
    public NameParser getNameParser(String name)
            throws NamingException {
  if ( namingManager == null )
      throw new NamingException();
        return namingManager.getNameParser();
    }

    /**
     * Return the name parser for the specified name.
     * @return the NameParser instance.
     * @exception NamingException if there is an exception.
     */
    public NameParser getNameParser(Name name) throws NamingException {
        // Flat namespace; no federation; just call string version
        return getNameParser(name.toString());
    }

    public String composeName(String name, String prefix)
            throws NamingException {
        Name result = composeName(new CompositeName(name),
                                  new CompositeName(prefix));
        return result.toString();
    }

    public Name composeName(Name name, Name prefix)
            throws NamingException {
        Name result = (Name)(prefix.clone());
        result.addAll(name);
        return result;
    }

    /**
     * Add a property to the environment.
     */
    public Object addToEnvironment(String propName, Object propVal)
            throws NamingException {
        if (myEnv == null) {
            myEnv = new Hashtable(5, 0.75f);
        }
        return myEnv.put(propName, propVal);
    }

    /**
     * Remove a property from the environment.
     */
    public Object removeFromEnvironment(String propName)
      throws NamingException
    {
        if (myEnv == null) {
            return null;
        }
        return myEnv.remove(propName);
    }

    /**
     * Get the context's environment.
     */
    public Hashtable getEnvironment() throws NamingException {
        if (myEnv == null) {
            // Must return non-null
            myEnv = new Hashtable(3, 0.75f);
        }
        return myEnv;
    }

    /**
     * New JNDI 1.2 operation.
     */
    public void close() throws NamingException {
        myEnv = null;
    }

    /**
     * Return the name of this context within the namespace.  The name
     * can be passed as an argument to (new InitialContext()).lookup()
     * to reproduce this context.
     */
    public String getNameInNamespace() throws NamingException {
        return myName;
    }
}

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