1 /**
   2  * Copyright (c) 2001, Thai Open Source Software Center Ltd
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met:
   8  *
   9  *     Redistributions of source code must retain the above copyright
  10  *     notice, this list of conditions and the following disclaimer.
  11  *
  12  *     Redistributions in binary form must reproduce the above copyright
  13  *     notice, this list of conditions and the following disclaimer in
  14  *     the documentation and/or other materials provided with the
  15  *     distribution.
  16  *
  17  *     Neither the name of the Thai Open Source Software Center Ltd nor
  18  *     the names of its contributors may be used to endorse or promote
  19  *     products derived from this software without specific prior written
  20  *     permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
  26  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  27  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  28  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  29  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  30  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  31  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  32  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34 package org.relaxng.datatype.helpers;
  35 
  36 import org.relaxng.datatype.*;
  37 
  38 /**
  39  * Dummy implementation of {@link DatatypeBuilder}.
  40  *
  41  * This implementation can be used for Datatypes which have no parameters.
  42  * Any attempt to add parameters will be rejected.
  43  *
  44  * <p>
  45  * Typical usage would be:
  46  * <PRE><XMP>
  47  * class MyDatatypeLibrary implements DatatypeLibrary {
  48  *     ....
  49  *     DatatypeBuilder createDatatypeBuilder( String typeName ) {
  50  *         return new ParameterleessDatatypeBuilder(createDatatype(typeName));
  51  *     }
  52  *     ....
  53  * }
  54  * </XMP></PRE>
  55  *
  56  * @author <a href="mailto:kohsuke.kawaguchi@sun.com">Kohsuke KAWAGUCHI</a>
  57  */
  58 public final class ParameterlessDatatypeBuilder implements DatatypeBuilder {
  59 
  60         /** This type object is returned for the derive method. */
  61         private final Datatype baseType;
  62 
  63         public ParameterlessDatatypeBuilder( Datatype baseType ) {
  64                 this.baseType = baseType;
  65         }
  66 
  67         public void addParameter( String name, String strValue, ValidationContext context )
  68                         throws DatatypeException {
  69                 throw new DatatypeException();
  70         }
  71 
  72         public Datatype createDatatype() throws DatatypeException {
  73                 return baseType;
  74         }
  75 }