Examples of javax.naming.ldap.SortControl

javax.naming.ldap.SortControl
an LDAP association LdapContext ctx = new InitialLdapContext(); // Activate sorting String sortKey = "cn";}ctx.setRequestControls(new Control[] new SortControl(sortKey, Control.CRITICAL) }); // Perform a search NamingEnumeration results = ctx.search("", "(objectclass=*)", new SearchControls()); // Iterate over search results while (results != null && results.hasMore()) { // Display an entry SearchResult entry = (SearchResult)results.next(); System.out.println(entry.getName()); System.out.println(entry.getAttributes()); // Handle the entry's response controls (if any) if (entry instanceof HasControls) { // ((HasControls)entry).getControls(); } } // Examine the sort control response Control[] controls = ctx.getResponseControls(); if (controls != null) { for (int i = 0; i < controls.length; i++) { if (controls[i] instanceof SortResponseControl) { SortResponseControl src = (SortResponseControl)controls[i]; if (! src.isSorted()) { throw src.getException(); } } else { // Handle other response controls (if any) } } } // Close the LDAP association ctx.close(); ... }
This class implements the LDAPv3 Request Control for server-side sorting as defined in RFC 2891. The control's value has the following ASN.1 definition:
```
 SortKeyList ::= SEQUENCE OF SEQUENCE { attributeType     AttributeDescription, orderingRule  [0] MatchingRuleId OPTIONAL, reverseOrder  [1] BOOLEAN DEFAULT FALSE } 
```
@since 1.5 @see SortKey @see SortResponseControl @author Vincent Ryan

      System.out.println("#################SEARCH BY QUERY FILTER##########################");
      SearchControls searchControls = new SearchControls();
      searchControls.setCountLimit(5);
      searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
      Control[] requestControls =
         {new PagedResultsControl(3, Control.CRITICAL), new SortControl(new String[]{"cn"}, Control.NONCRITICAL)};
      ctx.setRequestControls(requestControls);
      results = ctx.search(DEVELOPER_UNIT_DN, "(objectclass=person)", searchControls);
      while (results.hasMoreElements())
      {
         SearchResult sr = (SearchResult)results.nextElement();

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         if (constraints != null && constraints.isSorted())
         {
            //TODO: make criticallity optional
            //TODO sort by attribute name
            requestControls = new Control[]{
               new SortControl(typeConfiguration.getIdAttributeName(), Control.NONCRITICAL)
            };
         }


         StringBuilder af = new StringBuilder();

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   * Test for the class javax.naming.ldap.SortControl
   *
   */
  public void testSortControl(){
    try{
      SortControl sc=new SortControl("", false);
      SortControl sc2=null;
      ByteArrayOutputStream buffer = new ByteArrayOutputStream();
      ObjectOutput out = new ObjectOutputStream(buffer); 
      out.writeObject(sc); 
      out.close(); 
      ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray()));
      sc2 = (SortControl) in.readObject(); 
      in.close(); 
      assertEquals(sc.getID(),sc2.getID());
    }catch (Exception e) {
      fail("Failed with:"+e);
    }
  }

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    /**
     * tests how constructors with arrayas process null
     */
    public void testSortControl() throws Exception {
        try {
            new SortControl((String[]) null, false);
            fail("NullPointerException expected");
        } catch (NullPointerException e) {}


        try {
            new SortControl((SortKey[]) null, false);
            fail("NullPointerException expected");
        } catch (NullPointerException e) {}
    }

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    /**
     * @tests isCritical()
     */
    public void testSortControlStringArrayBoolean002() throws Exception {
        assertTrue(new SortControl("", true).isCritical());
        assertFalse(new SortControl("", false).isCritical());


        assertTrue(new SortControl(new String[0], true).isCritical());
        assertFalse(new SortControl(new String[0], false).isCritical());


        assertTrue(new SortControl(new SortKey[0], true).isCritical());
        assertFalse(new SortControl(new SortKey[0], false).isCritical());


    }

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     * </p>
     */
    public void testEncodedValueOfSortControl001() throws Exception {
        SortKey[] sk = { new SortKey("pepe", false, "leo") };


        SortControl sc = new SortControl(sk, true);
        assertEquals("30 10 30 0e 04 04 70 65 70 65 80 03 6c 65 6f 81 01 ff",
                toHexString(sc.getEncodedValue()));
    }

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    }
    
    public void testEncodedValueOfSortControlNull() throws Exception{
        String[] sk = {"pepe", null, "", "haha" };


        SortControl sc = new SortControl(sk, true);
        assertEquals("30 18 30 06 04 04 70 65 70 65 30 02 04 00 30 02 04 00 30 06 04 04 68 61 68 61",
                toHexString(sc.getEncodedValue()));
        
        String[] sk2 = {"pepe", "", "haha" };
        sc = new SortControl(sk2, true);
        assertEquals("30 14 30 06 04 04 70 65 70 65 30 02 04 00 30 06 04 04 68 61 68 61",
                toHexString(sc.getEncodedValue()));
        
        SortKey[] sk3 = {new SortKey("pepe", false, "haha"), null, new SortKey("", true, "haha2"), new SortKey("haah", true, "pepe")};
        try{
            sc = new SortControl(sk3, true);
            fail("should throw NPE");
        }catch(NullPointerException e){
        }
        
        SortKey[] sk4 = {new SortKey("pepe", false, "haha"), new SortKey("", true, "haha2"), new SortKey("haah", true, "pepe")};
        sc = new SortControl(sk4, true);
        assertEquals("30 2a 30 0f 04 04 70 65 70 65 80 04 68 61 68 61 81 01 ff 30 09 04 00 80 05 68 61 68 61 32 30 0c 04 04 68 61 61 68 80 04 70 65 70 65",
                toHexString(sc.getEncodedValue()));


    }

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     * </p>
     */
    public void testEncodedValueOfSortControl003() throws Exception {
        SortKey[] sk = { new SortKey("", true, "") };


        SortControl sc = new SortControl(sk, true);
        assertEquals("30 06 30 04 04 00 80 00", toHexString(sc
                .getEncodedValue()));


        SortKey[] sk1 = { new SortKey("pepe", true, "laura") };


        sc = new SortControl(sk1, true);
        assertEquals("30 0f 30 0d 04 04 70 65 70 65 80 05 6c 61 75 72 61",
                toHexString(sc.getEncodedValue()));
    }

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     * The expecting result is the control's ASN.1 BER encoded value.
     * </p>
     */
    public void testEncodedValueOfSortControl006() throws Exception {
        String[] sk = { "" };
        SortControl sc = new SortControl(sk, true);
        assertEquals("30 04 30 02 04 00", toHexString(sc.getEncodedValue()));


        String[] sk1 = { "pepe", "", "toto" };
        sc = new SortControl(sk1, true);
        assertEquals(
                "30 14 30 06 04 04 70 65 70 65 30 02 04 00 30 06 04 04 74 6f 74 6f",
                toHexString(sc.getEncodedValue()));
    }

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     * <p>
     * The expecting result is the control's ASN.1 BER encoded value.
     * </p>
     */
    public void testEncodedValueOfSortControl014() throws Exception {
        SortControl sc;


        sc = new SortControl((String) null, false);
        assertEquals("30 04 30 02 04 00", toHexString(sc.getEncodedValue()));


        sc = new SortControl("", true);
        assertEquals("30 04 30 02 04 00", toHexString(sc.getEncodedValue()));


        sc = new SortControl("pepe", false);
        assertEquals("30 08 30 06 04 04 70 65 70 65", toHexString(sc
                .getEncodedValue()));
    }

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