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 DatatypeStreamingValidator}.

    40  *

    41  * <p>

    42  * This implementation can be used as a quick hack when the performance

    43  * of streaming validation is not important. And this implementation

    44  * also shows you how to implement the DatatypeStreamingValidator interface.

    45  *

    46  * <p>

    47  * Typical usage would be:

    48  * <PRE>{@code

    49  * class MyDatatype implements Datatype {

    50  *     ....

    51  *     public DatatypeStreamingValidator createStreamingValidator( ValidationContext context ) {

    52  *         return new StreamingValidatorImpl(this,context);

    53  *     }

    54  *     ....

    55  * }

    56  * }</PRE>

    57  *

    58  * @author <a href="mailto:kohsuke.kawaguchi@sun.com">Kohsuke KAWAGUCHI</a>

    59  */

    60 public final class StreamingValidatorImpl implements DatatypeStreamingValidator {

    61 

    62         /** This buffer accumulates characters. */

    63         private final StringBuffer buffer = new StringBuffer();

    64 

    65         /** Datatype obejct that creates this streaming validator. */

    66         private final Datatype baseType;

    67 

    68         /** The current context. */

    69         private final ValidationContext context;

    70 

    71         public void addCharacters( char[] buf, int start, int len ) {

    72                 // append characters to the current buffer.

    73                 buffer.append(buf,start,len);

    74         }

    75 

    76         public boolean isValid() {

    77                 return baseType.isValid(buffer.toString(),context);

    78         }

    79 

    80         public void checkValid() throws DatatypeException {

    81                 baseType.checkValid(buffer.toString(),context);

    82         }

    83 

    84         public StreamingValidatorImpl( Datatype baseType, ValidationContext context ) {

    85                 this.baseType = baseType;

    86                 this.context = context;

    87         }

    88 }