Examples of javax.naming.NamingEnumeration

javax.naming.NamingEnumeration
This interface is for enumerating lists returned by methods in the javax.naming and javax.naming.directory packages. It extends Enumeration to allow as exceptions to be thrown during the enumeration.
When a method such as list(), listBindings(), or search() returns a NamingEnumeration, any exceptions encountered are reserved until all results have been returned. At the end of the enumeration, the exception is thrown (by hasMore());
For example, if the list() is returning only a partial answer, the corresponding exception would be PartialResultException. list() would first return a NamingEnumeration. When the last of the results has been returned by the NamingEnumeration's next(), invoking hasMore() would result in PartialResultException being thrown.
In another example, if a search() method was invoked with a specified size limit of 'n'. If the answer consists of more than 'n' results, search() would first return a NamingEnumeration. When the n'th result has been returned by invoking next() on the NamingEnumeration, a SizeLimitExceedException would then thrown when hasMore() is invoked.
Note that if the program uses hasMoreElements() and nextElement() instead to iterate through the NamingEnumeration, because these methods cannot throw exceptions, no exception will be thrown. Instead, in the previous example, after the n'th result has been returned by nextElement(), invoking hasMoreElements() would return false.
Note also that NoSuchElementException is thrown if the program invokes next() or nextElement() when there are no elements left in the enumeration. The program can always avoid this exception by using hasMore() and hasMoreElements() to check whether the end of the enumeration has been reached.
If an exception is thrown during an enumeration, the enumeration becomes invalid. Subsequent invocation of any method on that enumeration will yield undefined results. @author Rosanna Lee @author Scott Seligman @see Context#list @see Context#listBindings @see javax.naming.directory.DirContext#search @see javax.naming.directory.Attributes#getAll @see javax.naming.directory.Attributes#getIDs @see javax.naming.directory.Attribute#getAll @since 1.3

      props.put("java.naming.provider.url","scn://localhost:16430");
    }
    System.out.println("JNDI props = " + props + "\n");
    
    javax.naming.Context jndiCtx = new javax.naming.InitialContext(props);
     NamingEnumeration e = jndiCtx.list("");
     while (e.hasMore()) {
       NameClassPair ncp = (NameClassPair) e.next();
       System.out.println("ncp = " +ncp);
       System.out.println("  obj = " + jndiCtx.lookup(ncp.getName()));
     }
     jndiCtx.close();

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   * Parameter  : None
   * Return    : None, prints to the system output the list of all attributes
   */
  public void listAllAttributes() throws Exception
  {
    NamingEnumeration   valueEnum = null;
    Attribute      attr = null;
    int         aindex = 0, vindex = 0;


    this.getAllAttributes();


    // Search for objects that have those matching attributes
    NamingEnumeration attrEnum = attributes.getAll();
    
    aindex = 0;
    
    // List the attributes 
    while (attrEnum.hasMore())
    {
      attr = (Attribute)attrEnum.next();
      
      System.out.println("Attribute[ " + aindex + "]: " + attr.getID());
      
      valueEnum = attr.getAll();

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        Attribute attr = attrs.get( "aaaa" );
      
        if ( attr != null ){
          
          NamingEnumeration values = attr.getAll();
      
          while( values.hasMore()){
          
            Object value = values.next();
            
            if ( value instanceof String ){
              
              try{
                result.add( (Inet6Address)InetAddress.getByName((String)value));

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    try {
      connImpl = realm.getConnection();
      ctx = (DirContext)connImpl.getConnection();
  
      if (isRoot) {
        NamingEnumeration enu = ctx.list(isTribe? "ou=groups" : "ou=users");
  
        while (enu.hasMore()) {
          String name = ((NameClassPair)enu.next()).getName();
          name = name.substring(name.indexOf("=")+1);
          if (isTribe) {
            result.add( realm.getTribe(name) );
          } else {
            result.add( realm.getCitizen(name) );

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    /**
     * Performs a relative list on the context
     */
    public void testRelativeList() throws NamingException {
        NamingEnumeration listing = this.ic.list("");
        assertNotNull("Listing of current context must be non-null", listing);
        listing.close();
    }

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    /**
     * Performs an absolute list on the context
     */
    public void testAbsoluteList() throws NamingException {
        NamingEnumeration listing1 = this.ic.list("java:/comp/env");
        assertNotNull("Listing of java:/comp/env must be non-null", listing1);
        listing1.close();
        NamingEnumeration listing2 = this.ic.list("java:/comp/env/");
        assertNotNull("Listing of java:/comp/env/ must be non-null", listing2);
        listing2.close();
    }

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     */
    public void testCreateDestroyContexts() throws NamingException {
        Context child = this.ic.createSubcontext("TestChildContext");
        assertNotNull("Created subcontext TestChildContext must not be null",
                child);
        NamingEnumeration listing = child.list("");
        assertTrue("Listing on new child context is empty", !listing
                .hasMoreElements());
        listing.close();
        this.ic.destroySubcontext("java:/comp/env/TestChildContext");
    }

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    /*
     * Execute the given LDAP requests
     */
    Vector requests = extractRequests((Document) callData);
    NamingEnumeration results = null;
    DirContext context = connection.getContext();
    SearchControls controls = connection.getSearchControls();


    for (Iterator it = requests.iterator(); it.hasNext();)
    {

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    Element record = null;
    Element attribute = null;


    SearchResult sr = null;
    NamingEnumeration attrs = null;
    Attribute attr = null;
    String key = null;
    NamingEnumeration values = null;
    String value = null;


    try
    {
      while (results.hasMore())
      {
        sr = (SearchResult) results.next();
        attrs = sr.getAttributes().getAll();


        record = doc.createElement("Record");


        while (attrs.hasMore())
        {
          attr = (Attribute) attrs.next();
          key = attr.getID();
          values = attr.getAll();
          while (values.hasMore())
          {
            value = values.next().toString();
            attribute = doc.createElement(key);
            attribute.appendChild(doc.createTextNode(value));
            record.appendChild(attribute);
          }
        }

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      if (contextName == null) contextName = "/";
      out.println(contextName);
      StringBuffer buf = new StringBuffer(contextName.length());
      for (int i=0; i < contextName.length(); i++) buf.append(" ");
      String offset = buf.toString();
      NamingEnumeration enumer = context.list("");
      while (enumer.hasMore()) {
         try {
            NameClassPair pair = (NameClassPair)enumer.next();
            Object obj = context.lookup(pair.getName());
            if (obj instanceof Context) scanContext(contextName + pair.getName() + "/", (Context)obj, out);         
            else {
               out.println(offset +  pair.getName() + " class='" + pair.getClassName() + "'");            
   //            out.println(tmpOffset + " class='" + pair.getClassName() + "'");

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