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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 Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package com.sun.xml.rpc.encoding;

import javax.xml.namespace.QName;

import com.sun.xml.rpc.encoding.xsd.XSDConstants;
import com.sun.xml.rpc.streaming.XMLReader;
import com.sun.xml.rpc.streaming.XMLWriter;
import com.sun.xml.rpc.streaming.XMLWriterUtil;
import com.sun.xml.rpc.util.exception.JAXRPCExceptionBase;
import com.sun.xml.rpc.util.exception.LocalizableExceptionAdapter;

/**
 *
 * @author JAX-RPC Development Team
 */
public abstract class InterfaceSerializerBase extends SerializerBase {

    protected InterfaceSerializerBase(
        QName type,
        String encodingStyle,
        boolean encodeType) {
            
        super(type, encodeType, false, encodingStyle);
    }

    protected InterfaceSerializerBase(
        QName type,
        boolean encodeType,
        boolean isNullable,
        String encodingStyle) {
            
        super(type, encodeType, isNullable, encodingStyle);
    }

    protected abstract Object doDeserialize(
        QName name,
        XMLReader reader,
        SOAPDeserializationContext context)
        throws Exception;
        
    protected abstract void doSerializeInstance(
        Object obj,
        QName name,
        SerializerCallback callback,
        XMLWriter writer,
        SOAPSerializationContext context)
        throws Exception;

    public void serialize(
        Object obj,
        QName name,
        SerializerCallback callback,
        XMLWriter writer,
        SOAPSerializationContext context) {

        try {
            if (obj == null) {
                if (!isNullable) {
                    throw new SerializationException("soap.unexpectedNull");
                }
                serializeNull(name, writer, context);
            } else {
                doSerializeInstance(obj, name, callback, writer, context);
            }
        } catch (SerializationException e) {
            throw e;
        } catch (JAXRPCExceptionBase e) {
            throw new SerializationException(e);
        } catch (Exception e) {
            throw new SerializationException(
                new LocalizableExceptionAdapter(e));
        }
    }

    protected void serializeNull(
        QName name,
        XMLWriter writer,
        SOAPSerializationContext context)
        throws Exception {

        writer.startElement((name != null) ? name : type);

        boolean pushedEncodingStyle = false;
        if (encodingStyle != null)
            pushedEncodingStyle =
                context.pushEncodingStyle(encodingStyle, writer);

        if (encodeType) {
            String attrVal = XMLWriterUtil.encodeQName(writer, type);
            writer.writeAttributeUnquoted(XSDConstants.QNAME_XSI_TYPE, attrVal);
        }

        writer.writeAttributeUnquoted(XSDConstants.QNAME_XSI_NIL, "1");
        writer.endElement();
        if (pushedEncodingStyle) {
            context.popEncodingStyle();
        }
    }

    public Object deserialize(
        QName name,
        XMLReader reader,
        SOAPDeserializationContext context) {

        boolean pushedEncodingStyle = false;
        try {
            boolean isNull = getNullStatus(reader);
            if (!isNull) {
                return doDeserialize(name, reader, context);
            } else {
                if (!isNullable) {
                    throw new DeserializationException("soap.unexpectedNull");
                }
                String id = getID(reader);
                skipEmptyContent(reader);
                if (id != null) {
                    SOAPDeserializationState state = context.getStateFor(id);
                    state.setDeserializer(this);
                    state.setInstance(null);
                    state.doneReading();
                }

                return null;
            }
        } catch (DeserializationException e) {
            throw e;
        } catch (JAXRPCExceptionBase e) {
            throw new DeserializationException(e);
        } catch (Exception e) {
            throw new DeserializationException(
                new LocalizableExceptionAdapter(e));
        } finally {
            if (pushedEncodingStyle) {
                context.popEncodingStyle();
            }
        }
    }
    public static SOAPDeserializationState registerWithMemberState(
        Object instance,
        SOAPDeserializationState state,
        Object member,
        int memberIndex,
        SOAPInstanceBuilder builder) {
            
        return ObjectSerializerBase.registerWithMemberState(
            instance,
            state,
            member,
            memberIndex,
            builder);
    }
}