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Xstream Annotations Not Working


I wanted to use an @XStreamAlias for a case class and its fields and to deserialize an XML from a string according to the case class annotations: import com.thoughtworks.xstream.XStream import com.thoughtworks.xstream.annotations.XStreamAlias Software About XStream News Change History About Versioning Evaluating XStream Two Minute Tutorial Object references Tweaking the Output License Download References Benchmarks Code Statistics Using XStream Architecture Overview Converters Security Aspects Martin... @4:43class : XStreamDemonstrator$Recordsrequired-type : XStreamDemonstrator$TitleLanguagepath : /records/book/authorline number : 4------------------------------- at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:88) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:55) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:75) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:234) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:206) at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:150) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:81) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:55) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:75) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:59) But all classes/interfaces are visible tot he xstream plugin… So this should not be the problem. Check This Out

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Xstream Autodetectannotations

when you need to map the same type to two different XML 'standards'. The @XStreamConverter can be used to specify a Converter and pass values to its constructor. technically XStream has to use a SingleValueConverter. Can you keep flying after being Restrained?

The solution is to use a Converter implementation class which reads out both the attribute and the child text at once: @XStreamAlias("book") public static class Book { @XStreamAlias("id") @XStreamAsAttribute String id; However, this is only half the truth. Attributes The client may asks for the type tag and the importance flag to be an attribute inside the message tag, as follows: firstPart secondPart 1154097812245 All Xstream Date Converter Local Converters Let's create another attribute which defines the timestamp when the message was created and one to flag special importance of the message: @XStreamAlias("message") class RendezvousMessage { @XStreamAlias("type") private int

See tutorial . Xstream Alias Example XStreamAsAttribute is applicable where nodes have attributes defined, like . –S.R.I Dec 29 '12 at 8:25 Yes, I am wondering how can I also make XStreamAsAttribute annotation also Yes No OK OK Cancel X XStream › User Search everywhere only in this topic Advanced Search Xstream Annotations problem Classic List Threaded ♦ ♦ Locked 10 messages Moser Ludwig Reply more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

Home Forum Spring Projects Integration Web Services This forum is now a read-only archive. @xstreamimplicit Annotation Martin... @4:43 at org.xmlpull.mxp1.MXParser.getAttributeValue(MXParser.java:927) at com.thoughtworks.xstream.io.xml.XppReader.getAttribute(XppReader.java:93) at com.thoughtworks.xstream.io.ReaderWrapper.getAttribute(ReaderWrapper.java:52) at XStreamDemonstrator$TitleLanguageConverter.unmarshal(XStreamDemonstrator.java:65) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:81) ... 21 moreIt turns out that the order is important in TitleLanguageConverter.unmarshal: when we first read the book title In this example we use a Boolean converter for ‘isAlive' field, we want the XML to have values yes or no instead of true or false. This can be seen by running javap or scalap on those compiled classes.

Xstream Alias Example

You can run XStream also in a lazy mode, where it auto-detects the annotations while processing the object graph and configure the XStream instance on-the-fly: package com.thoughtworks.xstream; public class Tutorial { As a side note, what I'm trying to do is to make the attribute optional - as in, the score attribute will not show up if the score is empty. Xstream Autodetectannotations joehni added the question label Jul 1, 2015 joehni commented Jul 1, 2015 I suppose, your converter is not a SingleValueConverter as required for attributes? Xstream Converter It's fast, easy and it works.

The sequence of the arguments is only important for same types. his comment is here We want genre to be an attribute of the album instead of a child. To get the annotation to apply to the field as well (the spec/library is ambiguous about these concepts so I will assume it only applies to the field and not to The advantage with annotation is that it is faster to code and develop. Xstream Alias Not Working

package com.studytrails.xml.xstream; import java.net.MalformedURLException; import java.net.URL; import java.util.ArrayList; import java.util.List; import com.thoughtworks.xstream.XStream; import com.thoughtworks.xstream.annotations.XStreamAlias; import com.thoughtworks.xstream.annotations.XStreamAsAttribute; import com.thoughtworks.xstream.annotations.XStreamConverter; import com.thoughtworks.xstream.annotations.XStreamImplicit; import com.thoughtworks.xstream.annotations.XStreamOmitField; import com.thoughtworks.xstream.converters.basic.BooleanConverter; public class CreateXMLFromMusicArtistObjectAnnotated { public static void DoublyLinkedList Implementation Java Why do solar planes have many small propellers instead of fewer large ones? Powered by WordPress. http://tekspotting.com/not-working/xstream-omitfield-not-working.html The use case was to read an XML dump of a database, parse it into an object graph and use these objects to transfer the content to another database.

The XStreamConverter annotation uses some lightweight dependency injection mechanism to match given arguments with the parameters of available constructors. Xstream Useattributefor First to say that objects are way more complicate than usual (at least i fear so.) So for example I got several interfaces and abstract classes which contribute my final In the previous chapter, we've seen the following configurations in code.

the classes are no longer the same.

By now ist only ONE class i have to define, but in the end it will be 100+ so annotations Would be definitive my choice.(or any other way of defining the Concurrency XStream is not thread-safe while it is configured, thread-safety is only guaranteed during marshalling and unmarshalling. Required fields are marked *Comment Name * Email * Website XStream - XML Transformation XStream - Json to Java XStream - Collection Converters XStream - Basic Built-in Converters XStream - Custom Xstream Attribute Example See the acceptance test CustomMapperTest for ideas what you can do with this. > Greetings from sunny Austria!

Normally an InitializationException is only thrown while XStream is configured. Simple geometry. let's annotate it with the custom converter annotation: @XStreamAlias("message") class RendezvousMessage { @XStreamAlias("type") private int messageType; @XStreamImplicit(itemFieldName="part") private List content; private boolean important; @XStreamConverter(SingleValueCalendarConverter.class) private Calendar created = new GregorianCalendar(); public navigate here assert SiteImpl.class == s.getClass(); =============== %< =================== ...

The attribute will only vanish, if score is null. all implemented interfaces and super types as well of all the types of the field members and their related classes) and therefore pulls in all connected types into A's classloader. This tutorial will show you how to use some of the annotations provided by XStream in order to make configuration easier. See the acceptance test CustomMapperTest for ideas what you can do with this. > Greetings from sunny Austria!

Also tried: xstream = new XStream(); xstream.setClassLoader(ClassLoader.getSystemClassLoader()); or xstream.setClassLoader(s.getClass().getClassLoader()); neither of those versions works. In the example below we convert an object of type JazzArtist to XML. Exceptions XStream uses a well-defined exception hierarchy. August 2010 13:29 An: [hidden email] Betreff: [xstream-user] Re: AW: Re: Xstream Annotations problem Hi Ludwig, Moser Ludwig wrote: > You are right, > i guess ist the different classloaders of

I am no Eclipse/OSCi programmer, but AFAICS each plugin will use its own class loader i.e. Jörg Schaible-2 Reply | Threaded Open this post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Re: Xstream Annotations problem In reply to this post by content) { this.messageType = messageType; this.important = important; this.content = Arrays.asList(content); } } The BooleanConverter has an additional constructor with two string values expressing true and false and a third argument Personal Open source Business Explore Sign up Sign in Pricing Blog Support Search GitHub This repository Watch 24 Star 171 Fork 64 x-stream/xstream Code Issues 15 Pull requests 3 Projects

jimmyli97 closed this Jul 1, 2015 Sign up for free to join this conversation on GitHub. This led me to conclude that java annotations were not treated on par with scala annotations(Though, ideally it should be - Feel free to chime in if I made any mistake). That's right; but now suppose the book gets translated and we'd like to add an extra attribute to the XML: Robert C.