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Java example source code file (StreamingValidatorImpl.java)

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Java - Java tags/keywords

datatype, datatypeexception, datatypestreamingvalidator, streamingvalidatorimpl, stringbuffer, validationcontext

The StreamingValidatorImpl.java Java example source code

/**
 * Copyright (c) 2001, Thai Open Source Software Center Ltd
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *     Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *
 *     Neither the name of the Thai Open Source Software Center Ltd nor
 *     the names of its contributors may be used to endorse or promote
 *     products derived from this software without specific prior written
 *     permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.relaxng.datatype.helpers;

import org.relaxng.datatype.*;

/**
 * Dummy implementation of {@link DatatypeStreamingValidator}.
 *
 * <p>
 * This implementation can be used as a quick hack when the performance
 * of streaming validation is not important. And this implementation
 * also shows you how to implement the DatatypeStreamingValidator interface.
 *
 * <p>
 * Typical usage would be:
 * <PRE>
 * class MyDatatype implements Datatype {
 *     ....
 *     public DatatypeStreamingValidator createStreamingValidator( ValidationContext context ) {
 *         return new StreamingValidatorImpl(this,context);
 *     }
 *     ....
 * }
 * &lt;/XMP&gt;</PRE>
 *
 * @author &lt;a href="mailto:kohsuke.kawaguchi@sun.com"&gt;Kohsuke KAWAGUCHI</a>
 */
public final class StreamingValidatorImpl implements DatatypeStreamingValidator {

        /** This buffer accumulates characters. */
        private final StringBuffer buffer = new StringBuffer();

        /** Datatype obejct that creates this streaming validator. */
        private final Datatype baseType;

        /** The current context. */
        private final ValidationContext context;

        public void addCharacters( char[] buf, int start, int len ) {
                // append characters to the current buffer.
                buffer.append(buf,start,len);
        }

        public boolean isValid() {
                return baseType.isValid(buffer.toString(),context);
        }

        public void checkValid() throws DatatypeException {
                baseType.checkValid(buffer.toString(),context);
        }

        public StreamingValidatorImpl( Datatype baseType, ValidationContext context ) {
                this.baseType = baseType;
                this.context = context;
        }
}
</pre>
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