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XStream
View on Wikipedia| XStream Library | |
|---|---|
| Developer | Codehaus |
| Initial release | January 1, 2004 |
| Stable release | 1.4.20
/ December 24, 2022 |
| Written in | Java |
| Operating system | Cross-platform |
| License | BSD-style license |
| Website | x-stream |
XStream is a Java library to serialize objects to XML (or JSON) and back again.
NOTE: Not to confuse with XStream stream processing platform at Meta.
XStream library
[edit]XStream uses reflection to discover the structure of the object graph to serialize at run time, and doesn't require modifications to objects. It can serialize internal fields, including private and final, and supports non-public and inner classes.[1]
Object graph serialization
[edit]When serializing an object it serializes the full object graph. Duplicate references encountered in the object-model will be maintained. For example, using the following class CD
package com.thoughtworks.xstream;
public class Cd {
private String id;
private Cd bonusCd;
Cd(String id, Cd bonusCd) {
this.id = id;
this.bonusCd = bonusCd;
}
Cd(String id) {
this.id = id;
}
public String getId() {
return id;
}
public Cd getBonusCd() {
return bonusCd;
}
}
and add some of these object to a list
Cd bj = new Cd("basement_jaxx_singles");
Cd mr = new Cd("maria rita");
List<Cd> order = new ArrayList<>();
order.add(mr);
// adds the same cd twice (two references to the same object)
order.add(bj);
order.add(bj);
// adds itself (cycle)
order.add(order);
XStream xstream = new XStream();
xstream.alias("cd", Cd.class);
System.out.println(xstream.toXML(order));
If the above code is executed with XStream's default relative references mode, it will generate the following XML:
<list>
<cd>
<id>maria rita</id>
</cd>
<cd>
<id>basement_jaxx_singles</id>
</cd>
<cd reference="../cd[2]"/>
<list reference=".."/>
</list>
XStream is free software, distributed under a permissive, revised BSD-style licence.
Usage
[edit]References
[edit]- ^ "Use XStream to serialize Java objects into XML". Ibm.com. Archived from the original on 2009-02-19. Retrieved 2009-12-14.
- ^ "XStream - References". Xstream.codehaus.org. Retrieved 2009-12-14.
External links
[edit]
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