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Java example source code file (IDREFDatatypeValidator.java)

This example Java source code file (IDREFDatatypeValidator.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

idrefdatatypevalidator, idrefinvalid, idrefinvalidwithnamespaces, invaliddatatypevalueexception, object, validationcontext

The IDREFDatatypeValidator.java Java example source code

/*
 * reserved comment block
 * DO NOT REMOVE OR ALTER!
 */
/*
 * Copyright 1999-2002,2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sun.org.apache.xerces.internal.impl.dv.dtd;

import com.sun.org.apache.xerces.internal.impl.dv.*;
import com.sun.org.apache.xerces.internal.util.XMLChar;

/**
 * <P>IDREFDatatypeValidator - represents the IDREFS
 * attribute type from XML 1.0 recommendation. The
 * Value Space of IDREF is the set of all strings
 * that match the NCName production and have been
 * used in an XML Document as the value of an element
 * or attribute of Type ID. The Lexical space of
 * IDREF is the set of strings that match the NCName
 * production.</P>
 * <P>The Value space of IDREF is scoped to a specific
 * instance document</P>
 *
 * @xerces.internal
 *
 * @author Jeffrey Rodriguez, IBM
 * @author Sandy Gao, IBM
 *
 */
public class IDREFDatatypeValidator implements DatatypeValidator {

    // construct an IDREF datatype validator
    public IDREFDatatypeValidator() {
    }

    /**
     * Checks that "content" string is valid IDREF value.
     * If invalid a Datatype validation exception is thrown.
     *
     * @param content       the string value that needs to be validated
     * @param context       the validation context
     * @throws InvalidDatatypeException if the content is
     *         invalid according to the rules for the validators
     * @see InvalidDatatypeValueException
     */
    public void validate(String content, ValidationContext context) throws InvalidDatatypeValueException {

        //Check if is valid key-[81] EncName ::= [A-Za-z] ([A-Za-z0-9._] | '-')*
        if(context.useNamespaces()) {
            if (!XMLChar.isValidNCName(content)) {
                throw new InvalidDatatypeValueException("IDREFInvalidWithNamespaces", new Object[]{content});
            }
        }
        else {
            if (!XMLChar.isValidName(content)) {
                throw new InvalidDatatypeValueException("IDREFInvalid", new Object[]{content});
            }
        }

        context.addIdRef(content);

    }

}

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