/*

 * Copyright (c) 2005, 2016, Oracle and/or its affiliates. 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package com.sun.xml.internal.stream;

import java.io.InputStream;

import javax.xml.stream.XMLEventReader;

import javax.xml.stream.XMLResolver;

import javax.xml.stream.XMLStreamException;

import javax.xml.stream.XMLStreamReader;

import com.sun.org.apache.xerces.internal.xni.XMLResourceIdentifier;

import com.sun.org.apache.xerces.internal.xni.XNIException;

import com.sun.org.apache.xerces.internal.xni.parser.XMLInputSource;

import javax.xml.catalog.CatalogException;

/**

 *

 * @author  Neeraj Bajaj

 */

public class StaxEntityResolverWrapper {

    XMLResolver fStaxResolver ;

    /** Creates a new instance of StaxEntityResolverWrapper */

    public StaxEntityResolverWrapper(XMLResolver resolver) {

        fStaxResolver = resolver ;

    }

    public void setStaxEntityResolver(XMLResolver resolver ){

        fStaxResolver = resolver ;

    }

    public XMLResolver getStaxEntityResolver(){

        return fStaxResolver ;

    }

    public StaxXMLInputSource resolveEntity(XMLResourceIdentifier resourceIdentifier)

    throws XNIException, java.io.IOException {

        Object object = null ;

        try {

            object = fStaxResolver.resolveEntity(resourceIdentifier.getPublicId(), resourceIdentifier.getLiteralSystemId(),

            resourceIdentifier.getBaseSystemId(), null);

            return getStaxInputSource(object) ;

        } catch(XMLStreamException | CatalogException streamException){

            throw new XNIException(streamException) ;

        }

    }

    StaxXMLInputSource getStaxInputSource(Object object){

        if(object == null) return null ;

        if(object  instanceof java.io.InputStream){

            return new StaxXMLInputSource(new XMLInputSource(null, null, null, (InputStream)object, null), true);

        }

        else if(object instanceof XMLStreamReader){

            return new StaxXMLInputSource((XMLStreamReader)object, true) ;

        }else if(object instanceof XMLEventReader){

            return new StaxXMLInputSource((XMLEventReader)object, true) ;

        }

        return null ;

    }

}//class StaxEntityResolverWrapper