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Xstream Alias Example


Let's start with a custom Message class: package com.thoughtworks.xstream; package com.thoughtworks.xstream; public class RendezvousMessage { private int messageType; public RendezvousMessage(int messageType) { this.messageType = messageType; } } Let's code the XStream Converters If we do not want to use the standard conversion from the XStream library, we have to write a custom converter. Fortunately we can modify the mapping e.g. An alternative is to use a custom mapper. his comment is here

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) content) { this.messageType = messageType; this.important = important; this.content = Arrays.asList(content); } } Resulting in the following xml: 15 firstPart secondPart false America/Sao_Paulo Now we face Because the annotation has not been processed, no converter is registered. > My DocumentReflectionConverter simply gives a different method for > instantiation - (it gets the class from an attribute instead See the acceptance test CustomMapperTest for ideas what you can do with this. > Greetings from sunny Austria!

Xstream Alias Example

If Document.class is the base class, how should XStream know about any derived one? > Its only apparent when I call processAnnotations OR > autodetectAnnotations. 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 An example for that can be found in the Film class, @XStreamImplicit(itemFieldName = "nazwa") – used with collections mapping. Alternative approach A different approach is data mapping (binding).

See the acceptance test CustomMapperTest for ideas what you can do with this. > Greetings from sunny Austria! Thanks, Alan. -- View this message in context: http://www.nabble.com/Implicit-collections-and-inheritance-tp19520467p19520467.html Sent from the xstream - user mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email Next Message 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 Xstream Date Converter But what to do in situation when we can’t modify mapping classes?

Performance In auto-detection mode XStream will have to examine any unknown class type for annotations. Xstream Converter 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 So we have:@XStreamAlias("DATA") // maps DATA element in XML to this class public class Data { // Here is something more complicated. Translation: Paweł Cegła Print Comments Bogdan Mizerski 2010-06-24 mam taki fragment XML: ala ma kota Wszystko idzie pięknie, tylko gdzie wsadzić "ala ma kota" ?ps.

Summary That’s all what I wanted to show you in this post. Xstream List Of Objects XStream › User Search everywhere only in this topic Advanced Search Xstream Annotations problem Classic List Threaded ♦ ♦ Locked 10 messages Moser Ludwig Reply | Threaded Open this post in The document has to be parsed and objects obtained from that stored in a database. System.out.println(xstream.toXML(s)); [/CODE] I hope there is someone out there who can help me out!

Xstream Converter

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 > The full specification can be found on-line and in books. Xstream Alias Example If you already know that you will always omit a field of name "changeSupport" or of a listener type, you may overload the shouldSerializeMember method. Xstream Alias Not Working any more ideas? -----Ursprüngliche Nachricht----- Von: Jörg Schaible [mailto:[hidden email]] Gesendet: Samstag, 07.

Read "Developing Reactive Microservices" by MVB Markus Eisele Lightbend The Actor Model: Celebrating 43 Years Of Getting Distributed Systems Right (eBook) Lightbend “Reactive Microservices Architecture”: A Free O’Reilly Guidebook By Java All the beans inherit from an abstract class BaseXML, which makes it possible to map all files the same way (if we use annotations to configure mapping, not library methods). pl.marek.enums Place all of your annotation processing methods within init() and explicitly register every class you expect to serialize. See, the AnnotationMapper crawls the classes of the processed instances on-the-fly (i.e. Xstream Useattributefor

I'm not generating the sites in different plugins. and it will get worse at deserialization time. Weather in black forrest seems similar - at least today ;-) - Jörg --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email Jörg Schaible-2 Reply | Threaded Open this http://trisystech.net/not-working/xstream-annotations.html Express killers, part IV Eclipse RCP Another by this author XML in JAVA - XStream Library Authors Michał Bartyzel Articles count: 1 Bill Bejeck Articles count: 1 Marek Berkan Articles count:

Check your inbox to verify your email so you can start receiving the latest in tech news and resources. Xstream Api Therefore it is no problem to serialize an object graph into XML, since XStream will know of all types in advance. Unfortunately an annotation is defining a change in configuration that is now applied while object marshalling is processed.

So now i tried to use xstream in my upcoming application, but i ran into problems right at the start.

In our case we have a list of strings that prevent the conversion. The attribute field defines the name of the tag used for data contained inside this collection: @XStreamAlias("message") class RendezvousMessage { @XStreamAlias("type") private int messageType; @XStreamImplicit(itemFieldName="part") private List content; public RendezvousMessage(int messageType, I am adding this line to use annotations. Xstream Attribute Example The date format is a little bit "strange" as well.

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 { The following result will be displayed on the screen: Marek Kapowicki 1983-09-28 00:00:00.0 CET As you can see the mapping is done according to the names. What happened here? check over here What is knot theory about, exactly?

Awesome! content) { this.messageType = messageType; this.important = important; this.content = Arrays.asList(content); } } Unfortunately our little example does not work! 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 There could be information about people, books, institutions etc.

You might try to set autodetection to false and process the types individually. > it would be great to use xstream in my app as it could really make my From time to time there is a moment when we have to deal with XML data. Therefore deserialization will fail if the type has not already been processed either by having called XStream's processAnnotations method or by already having serialized this type. We could write our own.