/*
 * Copyright 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */


package com.sun.xml.internal.xsom.impl;

import com.sun.xml.internal.xsom.XSAttributeDecl;
import com.sun.xml.internal.xsom.XSAttributeUse;
import com.sun.xml.internal.xsom.XmlString;
import com.sun.xml.internal.xsom.impl.parser.SchemaDocumentImpl;
import com.sun.xml.internal.xsom.visitor.XSFunction;
import com.sun.xml.internal.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);
    }
}