Parsing/Deserialize XML to JavaObjects

java, jaxb, xml, xsd

Solution

use

xjc your_xsd_name -p packagename 

to generate Pojos, xjc is xml java compiler that comes with jdk.

once your classes are generated use jaxb as follows

JAXB Marshalling

    HDB hdb = new HDB(); 
    JAXBContext jaxbContext = JAXBContext.newInstance(HDB.class);
    Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
    jaxbMarshaller.marshal(hdb, file);
    jaxbMarshaller.marshal(hdb, System.out);

JAXB Unmarshalling

    File file = new File("your xml file");
    JAXBContext jaxbContext = JAXBContext.newInstance(hdb.class);

    Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
    HDB hdb = (HDB) jaxbUnmarshaller.unmarshal(file);
    System.out.println(hdb);

Visit following link for more info JAXB marshalling and unmarshalling

Problem

i started a small new project and i want to deserialize objects from XML. i created a xsd: http://pastebin.com/n1pwjRGX and an example XML File : ``` <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <hdb> <country code="DE"> <variableHoliday daysAfterEaster="49" name="PENTECOAST" /> <fixedHoliday month="JANUARY" day="1" name="NEWYEAR" /> <region code="sa"> <fixedHoliday month="APRIL" day="1" name="FUNNYDAY" /> <variableHoliday daysAfterEaster="0" name="EASTERSUNDAY" /> </region> <region code="ba"> <variableHoliday daysAfterEaster="12" name="CORPUSCHRISTI" /> </region> </country> <country code="US"> <fixedHoliday month="JULY" day="4" name="INDEPENDENCEDAY" /> </country> <country code="AL"> <fixedHoliday month="JULY" day="4" name="INDEPENDENCEDAY" /> </country> </hdb> ``` Which should use the xsd and so on. So how can i achive the deserialization of these XML to a nice Java-Object Structure? Mabe like : ``` class HDB { private HashMap<CountryCode,Country> map; } class Country { private List<Holiday> list; // or two Lists with <variableHoliday> and <fixedHoliday> private List<Region> regions; } class Region{ private List<Holiday> list; // or two Lists with <variableHoliday> and <fixedHoliday> } class variableHoliday { private String name; private int daysAfterEaster; } class fixedHoliday { private String name; private int day; private MonthName month; // while MonthName is an enum defined like the enum from XSD } ``` Any ideas how to achive that easy? I thought of jaxb an tried some stuff, but it seems to me (im a beginner with jaxb) that its hard to achive this XML structure because of maps cant be written like v.

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