Examples of com.thoughtworks.xstream.XStream

com.thoughtworks.xstream.XStream

alize to XML Object myObject2 = xstream.fromXML(xml); // deserialize from XML

Aliasing classes

To create shorter XML, you can specify aliases for classes using the alias() method. For example, you can shorten all occurrences of element <com.blah.MyThing> to <my-thing> by registering an alias for the class.

 xstream.alias("my-thing", MyThing.class);

Converters

XStream contains a map of {@link com.thoughtworks.xstream.converters.Converter} instances, each of which acts as astrategy for converting a particular type of class to XML and back again. Out of the box, XStream contains converters for most basic types (String, Date, int, boolean, etc) and collections (Map, List, Set, Properties, etc). For other objects reflection is used to serialize each field recursively.

Extra converters can be registered using the registerConverter() method. Some non-standard converters are supplied in the {@link com.thoughtworks.xstream.converters.extended} package and you can create your own byimplementing the {@link com.thoughtworks.xstream.converters.Converter} interface.

Example

 xstream.registerConverter(new SqlTimestampConverter()); xstream.registerConverter(new DynamicProxyConverter());

The converters can be registered with an explicit priority. By default they are registered with XStream.PRIORITY_NORMAL. Converters of same priority will be used in the reverse sequence they have been registered. The default converter, i.e. the converter which will be used if no other registered converter is suitable, can be registered with priority XStream.PRIORITY_VERY_LOW. XStream uses by default the {@link com.thoughtworks.xstream.converters.reflection.ReflectionConverter} as the fallback converter.

Example

 xstream.registerConverter(new CustomDefaultConverter(), XStream.PRIORITY_VERY_LOW);

Object graphs

XStream has support for object graphs; a deserialized object graph will keep references intact, including circular references.

XStream can signify references in XML using either relative/absolute XPath or IDs. The mode can be changed using setMode():


`xstream.setMode(XStream.XPATH_RELATIVE_REFERENCES);`	(Default) Uses XPath relative references to signify duplicate references. This produces XML with the least clutter.
`xstream.setMode(XStream.XPATH_ABSOLUTE_REFERENCES);`	Uses XPath absolute references to signify duplicate references. This produces XML with the least clutter.
`xstream.setMode(XStream.SINGLE_NODE_XPATH_RELATIVE_REFERENCES);`	Uses XPath relative references to signify duplicate references. The XPath expression ensures that a single node only is selected always.
`xstream.setMode(XStream.SINGLE_NODE_XPATH_ABSOLUTE_REFERENCES);`	Uses XPath absolute references to signify duplicate references. The XPath expression ensures that a single node only is selected always.
`xstream.setMode(XStream.ID_REFERENCES);`	Uses ID references to signify duplicate references. In some scenarios, such as when using hand-written XML, this is easier to work with.
`xstream.setMode(XStream.NO_REFERENCES);`	This disables object graph support and treats the object structure like a tree. Duplicate references are treated as two separate objects and circular references cause an exception. This is slightly faster and uses less memory than the other two modes.

Thread safety

The XStream instance is thread-safe. That is, once the XStream instance has been created and configured, it may be shared across multiple threads allowing objects to be serialized/deserialized concurrently. Note, that this only applies if annotations are not auto-detected on-the-fly.

Implicit collections

To avoid the need for special tags for collections, you can define implicit collections using one of the addImplicitCollection methods.

@author Joe Walnes @author Jörg Schaible @author Mauro Talevi @author Guilherme Silveira

        }
        return ids;
    }


    private String serialize(Object task) {
        XStream xStream = new XStream();
        return xStream.toXML(task);
    }

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        XStream xStream = new XStream();
        return xStream.toXML(task);
    }


    private Object deserialize(String serializedRunnable) {
        XStream xStream = new XStream();
        return xStream.fromXML(serializedRunnable);
    }

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            ClassLoader oldCl = Thread.currentThread().getContextClassLoader();
            try {
                Thread.currentThread().setContextClassLoader(classLoader);


                DomReader reader = new DomReader(element);
                XStream xstream = XStreamUtil.createXStream();
                xstream.setClassLoader(classLoader);
                Object o = xstream.unmarshal(reader);
                GBeanData[] gbeanDatas = (GBeanData[]) o;
                return Arrays.asList(gbeanDatas);
            } catch (Exception e) {
                throw new InvalidConfigException("Unable to load gbeans", e);
            } finally {

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            throw (IOException)new IOException("Cannot instantiate " + Document.class.getName()).initCause(e);
        }
        Document document = documentBuilder.newDocument();
        DomWriter writer = new DomWriter(document);


        XStream xstream = XStreamUtil.createXStream();
        xstream.marshal(gbeanDatas, writer);


//        FileWriter w = new FileWriter("target/foo.xml");
//        xstream.toXML(gbeanDatas, w);
//        w.close();

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            // ignore, some operations do not require alias or class exchange properties
        }
    }


    protected InputStream getRequestStream(Exchange exchange) throws SalesforceException {
        final XStream localXStream = xStream.get();
        try {
            // get request stream from In message
            Message in = exchange.getIn();
            InputStream request = in.getBody(InputStream.class);
            if (request == null) {
                AbstractSObjectBase sObject = in.getBody(AbstractSObjectBase.class);
                if (sObject != null) {
                    // marshall the SObject
                    // first process annotations on the class, for things like alias, etc.
                    localXStream.processAnnotations(sObject.getClass());
                    ByteArrayOutputStream out = new ByteArrayOutputStream();
                    // make sure we write the XML with the right encoding
                    localXStream.toXML(sObject, new OutputStreamWriter(out, StringUtil.__UTF8_CHARSET));
                    request = new ByteArrayInputStream(out.toByteArray());
                } else {
                    // if all else fails, get body as String
                    final String body = in.getBody(String.class);
                    if (null == body) {

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    }


    @Override
    protected void processResponse(Exchange exchange, InputStream responseEntity,
                                   SalesforceException exception, AsyncCallback callback) {
        final XStream localXStream = xStream.get();
        try {
            // do we need to un-marshal a response
            if (responseEntity != null) {
                final Class<?> responseClass = exchange.getProperty(RESPONSE_CLASS, Class.class);
                Object response;
                if (responseClass != null) {
                    // its ok to call this multiple times, as xstream ignores duplicate calls
                    localXStream.processAnnotations(responseClass);
                    final String responseAlias = exchange.getProperty(RESPONSE_ALIAS, String.class);
                    if (responseAlias != null) {
                        // extremely dirty, need to flush entire cache if its holding on to an old alias!!!
                        final CachingMapper mapper = (CachingMapper) localXStream.getMapper();
                        try {
                            if (mapper.realClass(responseAlias) != responseClass) {
                                mapper.flushCache();
                            }
                        } catch (CannotResolveClassException ignore) {
                        }
                        localXStream.alias(responseAlias, responseClass);
                    }
                    response = responseClass.newInstance();
                    localXStream.fromXML(responseEntity, response);
                } else {
                    // return the response as a stream, for getBlobField
                    response = responseEntity;
                }
                exchange.getOut().setBody(response);

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    /**
     * A factory method which takes a collection of types to be annotated
     */
    public static XStreamDataFormat processAnnotations(Iterable<Class<?>> types) {
        XStreamDataFormat answer = new XStreamDataFormat();
        XStream xstream = answer.getXStream();
        for (Class<?> type : types) {
            xstream.processAnnotations(type);
        }
        return answer;
    }

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    /**
     * A factory method which takes a number of types to be annotated
     */
    public static XStreamDataFormat processAnnotations(Class<?>... types) {
        XStreamDataFormat answer = new XStreamDataFormat();
        XStream xstream = answer.getXStream();
        for (Class<?> type : types) {
            xstream.processAnnotations(type);
        }
        return answer;
    }

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    public void setStaxConverter(StaxConverter staxConverter) {
        this.staxConverter = staxConverter;
    }


    protected XStream createXStream() {
        return new XStream();
    }

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    private XStream xStream;
    private SolverBenchmarkSuite suite = null;


    public XmlSolverBenchmarker() {
        // TODO From Xstream 1.3.3 that KeySorter will be the default. See http://jira.codehaus.org/browse/XSTR-363
        xStream = new XStream(new PureJavaReflectionProvider(new FieldDictionary(new NativeFieldKeySorter())));
        xStream.setMode(XStream.ID_REFERENCES);
        xStream.processAnnotations(SolverBenchmarkSuite.class);
        // It doesn't pick up the annotations of the @XStreamImplicit in xstream 1.2.2
        xStream.processAnnotations(SolverBenchmark.class);
    }

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