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XML Schema Object Model (XSOM) is a Java library that allows applications to easily parse XML Schema documents and inspect information in them. It is expected to be useful for applications that need to take XML Schema as an input.

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/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package com.sun.xml.xsom.impl;

/*-
 * #%L
 * XSOM
 * %%
 * Copyright (C) 2019 - 2020 Entur
 * %%
 * Licensed under the EUPL, Version 1.1 or – as soon they will be
 * approved by the European Commission - subsequent versions of the
 * EUPL (the "Licence");
 * 
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * 
 * http://ec.europa.eu/idabc/eupl5
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 * #L%
 */

import com.sun.xml.xsom.XSAttributeDecl;
import com.sun.xml.xsom.XSAttributeUse;
import com.sun.xml.xsom.XmlString;
import com.sun.xml.xsom.impl.parser.SchemaDocumentImpl;
import com.sun.xml.xsom.visitor.XSFunction;
import com.sun.xml.xsom.visitor.XSVisitor;
import org.xml.sax.Locator;

public class AttributeUseImpl extends ComponentImpl implements XSAttributeUse
{
    public AttributeUseImpl( SchemaDocumentImpl owner, AnnotationImpl ann, Locator loc, ForeignAttributesImpl fa, Ref.Attribute _decl,
        XmlString def, XmlString fixed, boolean req ) {
        
        super(owner,ann,loc,fa);
        
        this.att = _decl;
        this.defaultValue = def;
        this.fixedValue = fixed;
        this.required = req;
    }
    
    private final Ref.Attribute att;    
    public XSAttributeDecl getDecl() { return att.getAttribute(); }
    
    private final XmlString defaultValue;
    public XmlString getDefaultValue() {
        if( defaultValue!=null )    return defaultValue;
        else                        return getDecl().getDefaultValue();
    }
    
    private final XmlString fixedValue;
    public XmlString getFixedValue() {
        if( fixedValue!=null )      return fixedValue;
        else                        return getDecl().getFixedValue();
    }
    
    private final boolean required;
    public boolean isRequired() { return required; }
    
    public Object apply( XSFunction f ) {
        return f.attributeUse(this);
    }
    public void visit( XSVisitor v ) {
        v.attributeUse(this);
    }
}