1   /*
    2    * Copyright 2005 Sun Microsystems, Inc.  All Rights Reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Sun designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Sun in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
   22    * CA 95054 USA or visit www.sun.com if you need additional information or
   23    * have any questions.
   24    */
   25   package org.relaxng.datatype.helpers;
   26   
   27   import org.relaxng.datatype;
   28   
   29   /**
   30    * Dummy implementation of {@link DatatypeBuilder}.
   31    *
   32    * This implementation can be used for Datatypes which have no parameters.
   33    * Any attempt to add parameters will be rejected.
   34    *
   35    * <p>
   36    * Typical usage would be:
   37    * <PRE><XMP>
   38    * class MyDatatypeLibrary implements DatatypeLibrary {
   39    *     ....
   40    *     DatatypeBuilder createDatatypeBuilder( String typeName ) {
   41    *         return new ParameterleessDatatypeBuilder(createDatatype(typeName));
   42    *     }
   43    *     ....
   44    * }
   45    * </XMP></PRE>
   46    *
   47    * @author <a href="mailto:kohsuke.kawaguchi@sun.com">Kohsuke KAWAGUCHI</a>
   48    */
   49   public final class ParameterlessDatatypeBuilder implements DatatypeBuilder {
   50   
   51           /** This type object is returned for the derive method. */
   52           private final Datatype baseType;
   53   
   54           public ParameterlessDatatypeBuilder( Datatype baseType ) {
   55                   this.baseType = baseType;
   56           }
   57   
   58           public void addParameter( String name, String strValue, ValidationContext context )
   59                           throws DatatypeException {
   60                   throw new DatatypeException();
   61           }
   62   
   63           public Datatype createDatatype() throws DatatypeException {
   64                   return baseType;
   65           }
   66   }