ksoap2/serialization/SoapSerializationEnvelope.java

/*
 * Copyright (c) 2003,2004, Stefan Haustein, Oberhausen, Rhld., Germany
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
 * associated documentation files (the "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the
 * following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
 * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
 * EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package org.ksoap2.serialization;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.SoapFault;
import org.ksoap2.SoapFault12;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;

import java.io.IOException;
import java.util.Hashtable;
import java.util.Vector;
import java.io.ByteArrayOutputStream;

import org.kxml2.io.*;

/**
 * @author Stefan Haustein
 *
 *         This class extends the SoapEnvelope with Soap Serialization functionality.
 */
public class SoapSerializationEnvelope extends SoapEnvelope
{
    protected static final int QNAME_TYPE = 1;
    protected static final int QNAME_NAMESPACE = 0;
    protected static final int QNAME_MARSHAL = 3;
    private static final String ANY_TYPE_LABEL = "anyType";
    private static final String ARRAY_MAPPING_NAME = "Array";
    private static final String NULL_LABEL = "null";
    private static final String NIL_LABEL = "nil";
    private static final String HREF_LABEL = "href";
    private static final String ID_LABEL = "id";
    private static final String ROOT_LABEL = "root";
    private static final String TYPE_LABEL = "type";
    private static final String ITEM_LABEL = "item";
    private static final String ARRAY_TYPE_LABEL = "arrayType";
    static final Marshal DEFAULT_MARSHAL = new DM();
    public Hashtable properties = new Hashtable();

    Hashtable idMap = new Hashtable();
    Vector multiRef; // = new Vector();

    /**
     * Set this variable to true if you don't want that type definitions for complex types/objects
     * are automatically generated (with type "anyType") in the XML-Request, if you don't call the
     * Method addMapping. This is needed by some Servers which have problems with these type-definitions.
     */
    public boolean implicitTypes;

    /**
     * Set this variable to true for compatibility with what seems to be the default encoding for
     * .Net-Services. This feature is an extremely ugly hack. A much better option is to change the
     * configuration of the .Net-Server to standard Soap Serialization!
     */

    public boolean dotNet;

    /**
     * Set this variable to true if you prefer to silently skip unknown properties.
     * {@link RuntimeException} will be thrown otherwise.
     */
    public boolean avoidExceptionForUnknownProperty;

    /**
     * Map from XML qualified names to Java classes
     */

    protected Hashtable qNameToClass = new Hashtable();

    /**
     * Map from Java class names to XML name and namespace pairs
     */

    protected Hashtable classToQName = new Hashtable();

    /**
     * Set to true to add and ID and ROOT label to the envelope. Change to false for compatibility with WSDL.
     */
    protected boolean addAdornments = true;

    public SoapSerializationEnvelope(int version)
    {
        super(version);
        addMapping(enc, ARRAY_MAPPING_NAME, PropertyInfo.VECTOR_CLASS);
        DEFAULT_MARSHAL.register(this);
    }

    /**
     * @return the addAdornments
     */
    public boolean isAddAdornments()
    {
        return addAdornments;
    }

    /**
     * @param addAdornments
     *            the addAdornments to set
     */
    public void setAddAdornments(boolean addAdornments)
    {
        this.addAdornments = addAdornments;
    }

    /**
     * Set the bodyOut to be empty so that no un-needed xml is create. The null value for bodyOut will
     * cause #writeBody to skip writing anything redundant.
     * @param emptyBody
     * @see "http://code.google.com/p/ksoap2-android/issues/detail?id=77"
     */
    public void setBodyOutEmpty(boolean emptyBody) {
        if (emptyBody) {
            bodyOut = null;
        }
    }

    public void parseBody(XmlPullParser parser) throws IOException, XmlPullParserException
    {
        bodyIn = null;
        parser.nextTag();
        if (parser.getEventType() == XmlPullParser.START_TAG && parser.getNamespace().equals(env)
                && parser.getName().equals("Fault")) {
            SoapFault fault;
            if (this.version < SoapEnvelope.VER12) {
                fault = new SoapFault(this.version);
            } else {
                fault = new SoapFault12(this.version);
            }
            fault.parse(parser);
            bodyIn = fault;
        } else {
            while (parser.getEventType() == XmlPullParser.START_TAG) {
                String rootAttr = parser.getAttributeValue(enc, ROOT_LABEL);

                Object o = read(parser, null, -1, parser.getNamespace(), parser.getName(),
                        PropertyInfo.OBJECT_TYPE);
                if ("1".equals(rootAttr) || bodyIn == null) {
                    bodyIn = o;
                }
                parser.nextTag();
            }
        }
    }

    /** Read a SoapObject. This extracts any attributes and then reads the object as a KvmSerializable. */
    protected void readSerializable(XmlPullParser parser, SoapObject obj) throws IOException,
            XmlPullParserException
    {
        for (int counter = 0; counter < parser.getAttributeCount(); counter++) {
            String attributeName = parser.getAttributeName(counter);
            String value = parser.getAttributeValue(counter);
            ((SoapObject) obj).addAttribute(attributeName, value);
        }
        readSerializable(parser, (KvmSerializable) obj);
    }

    /** Read a KvmSerializable. */
    protected void readSerializable(XmlPullParser parser, KvmSerializable obj) throws IOException,
            XmlPullParserException
    {
        while (parser.nextTag() != XmlPullParser.END_TAG) {
            String name = parser.getName();
            if (!implicitTypes || !(obj instanceof SoapObject)) {
                PropertyInfo info = new PropertyInfo();
                int propertyCount = obj.getPropertyCount();
                boolean propertyFound = false;

                for (int i = 0; i < propertyCount && !propertyFound; i++) {
                    info.clear();
                    obj.getPropertyInfo(i, properties, info);

                    if ((name.equals(info.name) && info.namespace == null)
                            ||
                            (name.equals(info.name) && parser.getNamespace().equals(info.namespace))) {
                        propertyFound = true;
                        obj.setProperty(i, read(parser, obj, i, null, null, info));
                    }
                }

                if (!propertyFound) {
                    if (avoidExceptionForUnknownProperty) {
                        // Dummy loop to read until corresponding END tag
                        while (parser.next() != XmlPullParser.END_TAG
                                || !name.equals(parser.getName())) {
                        }
                        ;
                    } else {
                        throw new RuntimeException("Unknown Property: " + name);
                    }
                }
            } else {
                // I can only make this work for SoapObjects - hence the check above
                // I don't understand namespaces well enough to know whether it is correct in the next line...
                ((SoapObject) obj).addProperty(parser.getName(),
                        read(parser, obj, obj.getPropertyCount(),
                                ((SoapObject) obj).getNamespace(), name, PropertyInfo.OBJECT_TYPE));
            }
        }
        parser.require(XmlPullParser.END_TAG, null, null);
    }

    /**
     * If the type of the object cannot be determined, and thus no Marshal class can handle the object, this
     * method is called. It will build either a SoapPrimitive or a SoapObject
     *
     * @param parser
     * @param typeNamespace
     * @param typeName
     * @return unknownObject wrapped as a SoapPrimitive or SoapObject
     * @throws IOException
     * @throws XmlPullParserException
     */

    protected Object readUnknown(XmlPullParser parser, String typeNamespace, String typeName)
            throws IOException, XmlPullParserException {
        String name = parser.getName();
        String namespace = parser.getNamespace();

        // cache the attribute info list from the current element before we move on
        Vector attributeInfoVector = new Vector();
        for (int attributeCount = 0; attributeCount < parser.getAttributeCount(); attributeCount++) {
            AttributeInfo attributeInfo = new AttributeInfo();
            attributeInfo.setName(parser.getAttributeName(attributeCount));
            attributeInfo.setValue(parser.getAttributeValue(attributeCount));
            attributeInfo.setNamespace(parser.getAttributeNamespace(attributeCount));
            attributeInfo.setType(parser.getAttributeType(attributeCount));
            attributeInfoVector.addElement(attributeInfo);
        }

        parser.next(); // move to text, inner start tag or end tag
        Object result = null;
        String text = null;
        if (parser.getEventType() == XmlPullParser.TEXT) {
            text = parser.getText();
            SoapPrimitive sp = new SoapPrimitive(typeNamespace, typeName, text);
            result = sp;
            // apply all the cached attribute info list before we add the property and descend further for parsing
            for (int i = 0; i < attributeInfoVector.size(); i++) {
                sp.addAttribute((AttributeInfo) attributeInfoVector.elementAt(i));
            }
            parser.next();
        } else if (parser.getEventType() == XmlPullParser.END_TAG) {
            SoapObject so = new SoapObject(typeNamespace, typeName);
            // apply all the cached attribute info list before we add the property and descend further for parsing
            for (int i = 0; i < attributeInfoVector.size(); i++) {
                so.addAttribute((AttributeInfo) attributeInfoVector.elementAt(i));
            }
            result = so;
        }

        if (parser.getEventType() == XmlPullParser.START_TAG) {
            if (text != null && text.trim().length() != 0) {
                throw new RuntimeException("Malformed input: Mixed content");
            }
            SoapObject so = new SoapObject(typeNamespace, typeName);
            // apply all the cached attribute info list before we add the property and descend further for parsing
            for (int i = 0; i < attributeInfoVector.size(); i++) {
                so.addAttribute((AttributeInfo) attributeInfoVector.elementAt(i));
            }

            while (parser.getEventType() != XmlPullParser.END_TAG) {
                so.addProperty(parser.getName(),
                        read(parser, so, so.getPropertyCount(), null, null,
                                PropertyInfo.OBJECT_TYPE));
                parser.nextTag();
            }
            result = so;
        }
        parser.require(XmlPullParser.END_TAG, namespace, name);
        return result;
    }

    private int getIndex(String value, int start, int dflt) {
        if (value == null) {
            return dflt;
        }
        return value.length() - start < 3 ? dflt : Integer.parseInt(value.substring(start + 1,
                value.length() - 1));
    }

    protected void readVector(XmlPullParser parser, Vector v, PropertyInfo elementType)
            throws IOException,
            XmlPullParserException {
        String namespace = null;
        String name = null;
        int size = v.size();
        boolean dynamic = true;
        String type = parser.getAttributeValue(enc, ARRAY_TYPE_LABEL);
        if (type != null) {
            int cut0 = type.indexOf(':');
            int cut1 = type.indexOf("[", cut0);
            name = type.substring(cut0 + 1, cut1);
            String prefix = cut0 == -1 ? "" : type.substring(0, cut0);
            namespace = parser.getNamespace(prefix);
            size = getIndex(type, cut1, -1);
            if (size != -1) {
                v.setSize(size);
                dynamic = false;
            }
        }
        if (elementType == null) {
            elementType = PropertyInfo.OBJECT_TYPE;
        }
        parser.nextTag();
        int position = getIndex(parser.getAttributeValue(enc, "offset"), 0, 0);
        while (parser.getEventType() != XmlPullParser.END_TAG) {
            // handle position
            position = getIndex(parser.getAttributeValue(enc, "position"), 0, position);
            if (dynamic && position >= size) {
                size = position + 1;
                v.setSize(size);
            }
            // implicit handling of position exceeding specified size
            v.setElementAt(read(parser, v, position, namespace, name, elementType), position);
            position++;
            parser.nextTag();
        }
        parser.require(XmlPullParser.END_TAG, null, null);
    }

    /**
     * Builds an object from the XML stream. This method is public for usage in conjuction with Marshal
     * subclasses. Precondition: On the start tag of the object or property, so href can be read.
     */

    public Object read(XmlPullParser parser, Object owner, int index, String namespace,
            String name,
            PropertyInfo expected) throws IOException, XmlPullParserException {
        String elementName = parser.getName();
        String href = parser.getAttributeValue(null, HREF_LABEL);
        Object obj;
        if (href != null) {
            if (owner == null) {
                throw new RuntimeException("href at root level?!?");
            }
            href = href.substring(1);
            obj = idMap.get(href);
            if (obj == null || obj instanceof FwdRef) {
                FwdRef f = new FwdRef();
                f.next = (FwdRef) obj;
                f.obj = owner;
                f.index = index;
                idMap.put(href, f);
                obj = null;
            }
            parser.nextTag(); // start tag
            parser.require(XmlPullParser.END_TAG, null, elementName);
        } else {
            String nullAttr = parser.getAttributeValue(xsi, NIL_LABEL);
            String id = parser.getAttributeValue(null, ID_LABEL);
            if (nullAttr == null) {
                nullAttr = parser.getAttributeValue(xsi, NULL_LABEL);
            }
            if (nullAttr != null && SoapEnvelope.stringToBoolean(nullAttr)) {
                obj = null;
                parser.nextTag();
                parser.require(XmlPullParser.END_TAG, null, elementName);
            } else {
                String type = parser.getAttributeValue(xsi, TYPE_LABEL);
                if (type != null) {
                    int cut = type.indexOf(':');
                    name = type.substring(cut + 1);
                    String prefix = cut == -1 ? "" : type.substring(0, cut);
                    namespace = parser.getNamespace(prefix);
                } else if (name == null && namespace == null) {
                    if (parser.getAttributeValue(enc, ARRAY_TYPE_LABEL) != null) {
                        namespace = enc;
                        name = ARRAY_MAPPING_NAME;
                    } else {
                        Object[] names = getInfo(expected.type, null);
                        namespace = (String) names[0];
                        name = (String) names[1];
                    }
                }
                // be sure to set this flag if we don't know the types.
                if (type == null) {
                    implicitTypes = true;
                }
                obj = readInstance(parser, namespace, name, expected);
                if (obj == null) {
                    obj = readUnknown(parser, namespace, name);
                }
            }
            // finally, care about the id....
            if (id != null) {
                Object hlp = idMap.get(id);
                if (hlp instanceof FwdRef) {
                    FwdRef f = (FwdRef) hlp;
                    do {
                        if (f.obj instanceof KvmSerializable) {
                            ((KvmSerializable) f.obj).setProperty(f.index, obj);
                        } else {
                            ((Vector) f.obj).setElementAt(obj, f.index);
                        }
                        f = f.next;
                    } while (f != null);
                } else if (hlp != null) {
                    throw new RuntimeException("double ID");
                }
                idMap.put(id, obj);
            }
        }

        parser.require(XmlPullParser.END_TAG, null, elementName);
        return obj;
    }

    /**
     * Returns a new object read from the given parser. If no mapping is found, null is returned. This method
     * is used by the SoapParser in order to convert the XML code to Java objects.
     */
    public Object readInstance(XmlPullParser parser, String namespace, String name,
            PropertyInfo expected)
            throws IOException, XmlPullParserException {
        Object obj = qNameToClass.get(new SoapPrimitive(namespace, name, null));
        if (obj == null) {
            return null;
        }
        if (obj instanceof Marshal) {
            return ((Marshal) obj).readInstance(parser, namespace, name, expected);
        } else if (obj instanceof SoapObject) {
            obj = ((SoapObject) obj).newInstance();
        } else if (obj == SoapObject.class) {
            obj = new SoapObject(namespace, name);
        } else {
            try {
                obj = ((Class) obj).newInstance();
            } catch (Exception e) {
                throw new RuntimeException(e.toString());
            }
        }
        // ok, obj is now the instance, fill it....
        if (obj instanceof SoapObject) {
            readSerializable(parser, (SoapObject) obj);
        } else if (obj instanceof KvmSerializable) {
            readSerializable(parser, (KvmSerializable) obj);
        } else if (obj instanceof Vector) {
            readVector(parser, (Vector) obj, expected.elementType);
        } else {
            throw new RuntimeException("no deserializer for " + obj.getClass());
        }
        return obj;
    }

    /**
     * Returns a string array containing the namespace, name, id and Marshal object for the given java object.
     * This method is used by the SoapWriter in order to map Java objects to the corresponding SOAP section
     * five XML code.
     */
    public Object[] getInfo(Object type, Object instance) {
        if (type == null) {
            if (instance instanceof SoapObject || instance instanceof SoapPrimitive) {
                type = instance;
            } else {
                type = instance.getClass();
            }
        }
        if (type instanceof SoapObject) {
            SoapObject so = (SoapObject) type;
            return new Object[] {
                    so.getNamespace(), so.getName(), null, null
            };
        }
        if (type instanceof SoapPrimitive) {
            SoapPrimitive sp = (SoapPrimitive) type;
            return new Object[] {
                    sp.getNamespace(), sp.getName(), null, DEFAULT_MARSHAL
            };
        }
        if ((type instanceof Class) && type != PropertyInfo.OBJECT_CLASS) {
            Object[] tmp = (Object[]) classToQName.get(((Class) type).getName());
            if (tmp != null) {
                return tmp;
            }
        }
        return new Object[] {
                xsd, ANY_TYPE_LABEL, null, null
        };
    }

    /**
     * Defines a direct mapping from a namespace and name to a java class (and vice versa), using the given
     * marshal mechanism
     */
    public void addMapping(String namespace, String name, Class clazz, Marshal marshal) {
        qNameToClass
                .put(new SoapPrimitive(namespace, name, null), marshal == null ? (Object) clazz
                        : marshal);
        classToQName.put(clazz.getName(), new Object[] {
                namespace, name, null, marshal
        });
    }

    /**
     * Defines a direct mapping from a namespace and name to a java class (and vice versa)
     */
    public void addMapping(String namespace, String name, Class clazz) {
        addMapping(namespace, name, clazz, null);
    }

    /**
     * Adds a SoapObject to the class map. During parsing, objects of the given type (namespace/name) will be
     * mapped to corresponding copies of the given SoapObject, maintaining the structure of the template.
     */
    public void addTemplate(SoapObject so) {
        qNameToClass.put(new SoapPrimitive(so.namespace, so.name, null), so);
    }

    /**
     * Response from the soap call. Pulls the object from the wrapper object and returns it.
     *
     * @since 2.0.3
     * @return response from the soap call.
     * @throws SoapFault
     */
    public Object getResponse() throws SoapFault {
        if (bodyIn instanceof SoapFault) {
            throw (SoapFault) bodyIn;
        }
        KvmSerializable ks = (KvmSerializable) bodyIn;

        if (ks.getPropertyCount() == 0) {
            return null;
        } else if (ks.getPropertyCount() == 1) {
            return ks.getProperty(0);
        } else {
            Vector ret = new Vector();
            for (int i = 0; i < ks.getPropertyCount(); i++) {
                ret.add(ks.getProperty(i));
            }
            return ret;
        }
    }

    /**
     * Serializes the request object to the given XmlSerliazer object
     *
     * @param writer
     *            XmlSerializer object to write the body into.
     */
    public void writeBody(XmlSerializer writer) throws IOException {
        // allow an empty body without any tags in it
        // see http://code.google.com/p/ksoap2-android/issues/detail?id=77
        if (bodyOut != null) {
            multiRef = new Vector();
            multiRef.addElement(bodyOut);
            Object[] qName = getInfo(null, bodyOut);
            writer.startTag((dotNet) ? "" : (String) qName[QNAME_NAMESPACE],
                    (String) qName[QNAME_TYPE]); //<spp:sppPostDevData
            if (dotNet) {
                writer.attribute(null, "xmlns", (String) qName[QNAME_NAMESPACE]);
            }
            if (addAdornments) {
                writer.attribute(null, ID_LABEL, qName[2] == null ? ("o" + 0) : (String) qName[2]);
                writer.attribute(enc, ROOT_LABEL, "1");
            }
            writeElement(writer, bodyOut, null, qName[QNAME_MARSHAL]); //....
            writer.endTag((dotNet) ? "" : (String) qName[QNAME_NAMESPACE],
                    (String) qName[QNAME_TYPE]);//</spp:sppPostDevData>
        }
    }

    /**
     * Writes the body of an SoapObject. This method write the attributes and then calls
     * "writeObjectBody (writer, (KvmSerializable)obj);"
     */
    public void writeObjectBody(XmlSerializer writer, SoapObject obj) throws IOException {
        SoapObject soapObject = (SoapObject) obj;
        int cnt = soapObject.getAttributeCount();
        for (int counter = 0; counter < cnt; counter++) {
            AttributeInfo attributeInfo = new AttributeInfo();
            soapObject.getAttributeInfo(counter, attributeInfo);
            writer.attribute(attributeInfo.getNamespace(), attributeInfo.getName(), attributeInfo
                    .getValue()
                    .toString());
        }
        writeObjectBody(writer, (KvmSerializable) obj);
    }

    /**
     * Writes the body of an KvmSerializable object. This method is public for access from Marshal subclasses.
     */
    public void writeObjectBody(XmlSerializer writer, KvmSerializable obj) throws IOException {
        int cnt = obj.getPropertyCount();
        PropertyInfo propertyInfo = new PropertyInfo();
        String namespace;
        String name;
        String type;
        for (int i = 0; i < cnt; i++) {
            // get the property
            Object prop = obj.getProperty(i);
            // and importantly also get the property info which holds the name potentially!
            obj.getPropertyInfo(i, properties, propertyInfo);

            if (!(prop instanceof SoapObject)) {
                // prop is a PropertyInfo
                if ((propertyInfo.flags & PropertyInfo.TRANSIENT) == 0) {
                    writer.startTag(propertyInfo.namespace, propertyInfo.name);
                    writeProperty(writer, obj.getProperty(i), propertyInfo);
                    writer.endTag(propertyInfo.namespace, propertyInfo.name);
                }
            } else {
                // prop is a SoapObject
                SoapObject nestedSoap = (SoapObject) prop;
                // lets get the info from the soap object itself
                Object[] qName = getInfo(null, nestedSoap);
                namespace = (String) qName[QNAME_NAMESPACE];
                type = (String) qName[QNAME_TYPE];

                // prefer the name from the property info
                if (propertyInfo.name != null && propertyInfo.name.length() > 0) {
                    name = propertyInfo.name;
                } else {
                    name = (String) qName[QNAME_TYPE];
                }

                // treat MO data as CDATA
                if (name.equals("DevInfo") || name.equals("DevDetail")
                        || name.equals("PerProviderSubscription") || // format v4
                        name.equals("MgmtTree") // format v6
                ) {
                    ByteArrayOutputStream bos = new ByteArrayOutputStream();
                    XmlSerializer xw = new KXmlSerializer();
                    xw.setOutput(bos, "UTF-8");
                    xw.startTag((dotNet) ? "" : namespace, name);
                    if (!implicitTypes) {
                        String prefix = writer.getPrefix(namespace, true);
                        writer.attribute(xsi, TYPE_LABEL, prefix + ":" + type);
                    }
                    writeObjectBody(xw, nestedSoap);
                    xw.endTag((dotNet) ? "" : namespace, name);
                    xw.flush();
                    //bos.write('\r');
                    //bos.write('\n');
                    bos.flush();
                    writer.cdsect(bos.toString());
                }
                else
                {
                    writer.startTag((dotNet) ? "" : namespace, name);
                    if (!implicitTypes) {
                        String prefix = writer.getPrefix(namespace, true);
                        writer.attribute(xsi, TYPE_LABEL, prefix + ":" + type);
                    }
                    writeObjectBody(writer, nestedSoap);
                    writer.endTag((dotNet) ? "" : namespace, name);
                }
            }
        }
    }

    protected void writeProperty(XmlSerializer writer, Object obj, PropertyInfo type)
            throws IOException {
        if (obj == null) {
            ///M: Modify for HS20
            //writer.attribute(xsi, version >= VER12 ? NIL_LABEL : NULL_LABEL, "true");
            return;
        }
        Object[] qName = getInfo(null, obj);
        if (type.multiRef || qName[2] != null) {
            int i = multiRef.indexOf(obj);
            if (i == -1) {
                i = multiRef.size();
                multiRef.addElement(obj);
            }
            writer.attribute(null, HREF_LABEL, qName[2] == null ? ("#o" + i) : "#" + qName[2]);
        } else {
            if (!implicitTypes || obj.getClass() != type.type) {
                String prefix = writer.getPrefix((String) qName[QNAME_NAMESPACE], true);
                writer.attribute(xsi, TYPE_LABEL, prefix + ":" + qName[QNAME_TYPE]);
            }
            writeElement(writer, obj, type, qName[QNAME_MARSHAL]);
        }
    }

    private void writeElement(XmlSerializer writer, Object element, PropertyInfo type,
            Object marshal)
            throws IOException {
        if (marshal != null) {
            ((Marshal) marshal).writeInstance(writer, element);
        } else if (element instanceof SoapObject) {
            writeObjectBody(writer, (SoapObject) element);
        } else if (element instanceof KvmSerializable) {
            writeObjectBody(writer, (KvmSerializable) element);
        } else if (element instanceof Vector) {
            writeVectorBody(writer, (Vector) element, type.elementType);
        } else {
            throw new RuntimeException("Cannot serialize: " + element);
        }
    }

    protected void writeVectorBody(XmlSerializer writer, Vector vector, PropertyInfo elementType)
            throws IOException {
        String itemsTagName = ITEM_LABEL;
        String itemsNamespace = null;

        if (elementType == null) {
            elementType = PropertyInfo.OBJECT_TYPE;
        } else if (elementType instanceof PropertyInfo) {
            if (elementType.name != null) {
                itemsTagName = elementType.name;
                itemsNamespace = elementType.namespace;
            }
        }

        int cnt = vector.size();
        Object[] arrType = getInfo(elementType.type, null);

        // This removes the arrayType attribute from the xml for arrays(required for most .Net services to work)
        if (!implicitTypes) {
            writer.attribute(enc, ARRAY_TYPE_LABEL, writer.getPrefix((String) arrType[0], false)
                    + ":"
                    + arrType[1] + "[" + cnt + "]");
        }

        boolean skipped = false;
        for (int i = 0; i < cnt; i++) {
            if (vector.elementAt(i) == null) {
                skipped = true;
            } else {
                writer.startTag(itemsNamespace, itemsTagName);
                if (skipped) {
                    writer.attribute(enc, "position", "[" + i + "]");
                    skipped = false;
                }
                writeProperty(writer, vector.elementAt(i), elementType);
                writer.endTag(itemsNamespace, itemsTagName);
            }
        }
    }
}