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Xstream Annotations


asked 3 years ago viewed 1291 times active 2 months ago Upcoming Events 2016 Community Moderator Election ends in 6 days Blog How We Make Money at Stack Overflow: 2016 Edition What is the standard dimension of a picture to be viewed on a wide screen? We don't want to include the ‘noOfRecords' in the resulting XML, we therefore use the @XStreamOmitField to omit that field. This code is available on our GitHub repository as well. Source

the disadvantage is that you bind the java class to XStream. 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; There is no way to map this with XStream annotations as is, this is also confirmed in the newsgroup. What should I do about this security issue?

Xstream Annotations

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 { ComplexExample.java package com.itcuties.java.xstream.data; import java.io.ObjectStreamException; import java.util.List; import com.thoughtworks.xstream.annotations.XStreamAlias; import com.thoughtworks.xstream.annotations.XStreamAsAttribute; import com.thoughtworks.xstream.annotations.XStreamImplicit; /** * More complex example. Here is our more advanced code snippet. Nevertheless you have to understand the implications, therefore some words of warning: Chicken-and-egg problem An XStream instance caches all class types processed for annotations.

Should I be concerned about "security"? Case 1 : Element with attributes but no value - Using SingleValueConverter This is child 2 In this example we use a SingleValueConverter to convert the XML element Annotations do not provide more functionality, but may improve convenience. Xstream Useattributefor quite motivating reply...

content) { this.messageType = messageType; this.content = Arrays.asList(content); } } Let's create the custom converter: public class SingleValueCalendarConverter implements Converter { public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) { Calendar Omar Al Kababji Ranch Hand Posts: 357 posted 7 years ago Yes Paul in this case of-course it would work ;) Omar Al Kababji - Electrical & Computer Engineer [SCJP - Reload to refresh your session. Default values If you want to set class default values which are different from the default java types values ( 0 for int, false for boolean etc.) you need to assign

Why rotational matrices are not commutative? Xstream Api content) { this.messageType = messageType; this.content = Arrays.asList(content); } } public static void main(String[] args) { XStream stream = new XStream(); xstream.processAnnotations(RendezvousMessage.class); RendezvousMessage msg = new RendezvousMessage(15, "firstPart","secondPart"); System.out.println(stream.toXML(msg)); } The File: XStreamTester.java package com.tutorialspoint.xstream; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.util.ArrayList; import java.util.List; import javax.xml.transform.OutputKeys; import javax.xml.transform.Source; import javax.xml.transform.Transformer; import javax.xml.transform.sax.SAXSource; import javax.xml.transform.sax.SAXTransformerFactory; import javax.xml.transform.stream.StreamResult; import org.xml.sax.InputSource; import com.thoughtworks.xstream.XStream; import com.thoughtworks.xstream.annotations.XStreamAlias; import This example uses the following annotations @XStreamAlias - Used on the type, field or attribute.

Xstream Alias Example

Could California Ratify the Paris Agreement? Leading and trailing whitespaces are normally removed as well as sequential ones! Xstream Annotations Here is the complete example. Xstream Converter To understand ‘aliases' look at this tutorial @XStreamImplicit - Used on Collections or array.

package com.studytrails.xml.xstream; import com.thoughtworks.xstream.XStream; public class ElementWithAttribute2 { private String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "<Root>" + "<child1 key1=\"value1\"></child1>" + "<child2>This is child 2</child2>" + "</Root>"; public static void main(String[] Therefore we have to use either a custom converter that transforms this list into a single string or we use for simplicity a simple string here: @XStreamAlias("message") @XStreamConverter(value=ToAttributedValueConverter.class, strings={"content"}) class RendezvousMessage Thanks a lot for your time. posted 7 years ago You are calling item.setUserData and item.setUserdata??? Xstream Alias Not Working

Neither setting the value in field definition * will work. Tell your friends! Reply Leave a ReplyWant to join the discussion? http://helpsbs.com/not-working/xstream-alias-example.html In our case we have a list of strings that prevent the conversion.

Because constructor is not being invoked we * cannot set the value there. Xstream List Of Objects It is called during deserialization process and here we can check * if the field value is null. All rights reserved.Theme: ColorMag by ThemeGrill.

According to the mailing list, the only workaround is to write a custom converter for the entire class.

And there is no need to set "score" as alias for "score". Terms Privacy Security Status Help You can't perform that action at this time. Omar Al Kababji - Electrical & Computer Engineer [SCJP - 90% - Story] [SCWCD - 94% - Story] [SCBCD - 80% - Story] | My Blog Jigar Naik Ranch Hand Xstream Documentation Although we register the converter with the XStreamConverter annotation and provide with its arguments the field name, the conversion will fail later on.

Let us go back to the first attempt of our tutorial, but this time we alias the package name instead of the individual classes: public static void main(String[] args) { Blog Tolkien 1024 To read java object from xml call the fromXML method of the XStream class. Tell your friends! Check This Out Tell your friends!

That's right; but now suppose the book gets translated and we'd like to add an extra attribute to the XML: Robert C. However when I tried to adapt the code to support a similar scenario I bumped into a few unexpected problems even though the documentation of this project XStream is actually pretty Attribute aliasing The next step is to set the writer member variable as an XML attribute. Jigar Naik Paul Clapham Sheriff Posts: 21452 33 I like...

Jigar Naik Omar Al Kababji Ranch Hand Posts: 357 posted 7 years ago you should add to your xstream instance the following line of code instance.processAnnotations(POJOClassThatContainsAnnotatins); Omar Al Kababji - We shall name it simply blog: let's create an alias called blog to the desired class: xstream.alias("blog", Blog.class); Using the same idea, we can alias the 'Entry' class to 'entry': xstream.alias("entry", Only when I remove the @XStreamAsAttribute annotation does the local converter work as expected. 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

NOW! Field aliasing Next we will change the name of the writer tag, but this time we have to use a field alias: xstream.aliasField("author", Blog.class, "writer"); The Do the guest schools spend an entire academic year in the host school during the Triwizard Tournament?