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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
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 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
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package com.sun.org.apache.xerces.internal.impl.dv.dtd;

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

/**
 * <P>ENTITYDatatypeValidator implements the
 * DatattypeValidator interface.
 * This validator embodies the ENTITY attribute type
 * from XML1.0 recommendation.
 * The Value space of ENTITY is the set of all strings
 * that match the NCName production and have been
 * declared as an unparsed entity in a document
 * type definition.
 * The Lexical space of Entity is the set of all
 * strings that match the NCName production.
 * The value space of ENTITY is scoped to a specific
 * instance document.</P>
 *
 * @xerces.internal
 *
 * @author Jeffrey Rodriguez, IBM
 * @author Sandy Gao, IBM
 *
 */
public class ENTITYDatatypeValidator implements DatatypeValidator {

    // construct an ENTITY datatype validator
    public ENTITYDatatypeValidator() {
    }

    /**
     * Checks that "content" string is valid ID 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 {

        if (!context.isEntityUnparsed(content))
            throw new InvalidDatatypeValueException("ENTITYNotUnparsed", new Object[]{content});

    }

}
