1. What is CASTOR2 CASTOR is an open source software that automatically binds Java objects and XML. It can bind between Java objects, XML text, SQL data tables, and LDAP directories. 2 URL: http: // www .castor.org /
2. CaStor uses 2 Java objects refers to JavaBean with SETX and GETX methods, uses CaStor for the JavaBean specific method of use as follows: Ø
Default Usage: Default usage refers to the usage of not using the mapping format description file. *;
Import org.exolab.castor.xml. *;
Public Class Test
{
Public static void main (string [] argv) {
// build a test bean
FLightBean bean = new flightbean ();
Bean.setcarrier ("ar");
Bean.setnumber (426);
Bean.setDeparturetime ("6:
23A
");
Bean.setarrivaltime ("8:
42A
");
Try {
// Write It Out as XML
File File = New File ("Test.xml");
Writer Writer = New FileWriter (file);
Marshaller.Marshal (Bean, Writer);
// Now restore the value and list what we get
Reader Reader = New FileReader (File);
Flightbean Read = (Flightbean)
UNMARSHALLER.Unmarshal (Flightbean.class, Reader);
System.out.println ("Flight" Read.getCarrier ()
Read.getNumber () "Departing at"
Read.GetDeparturetime ()
"and arriving at" read.getarrivaltime ());
} catch (ioException ex) {
EX.PrintStackTrace (System.err);
} catch (MARSHALEXCEPTION EX) {
EX.PrintStackTrace (System.err);
} catch (validationException ex) {
EX.PrintStackTrace (System.err);
}
}
} Ø Standard usage: import java.io. *;
Import org.exolab.castor.xml. *;
Import org.exolab.castor.mapping. *;
Public Class Test
{
Public static void main (string [] argv) {
// build a test bean
FLightBean bean = new flightbean ();
Bean.setcarrier ("ar");
Bean.setnumber (426);
Bean.setDeparturetime ("6:
23A
");
Bean.setarrivaltime ("8:
42A
");
Try {
// Write it out as xmlmapping map = new mapping ();
Map.LoadMapping ("mapping.xml");
File File = New File ("Test.xml");
Writer Writer = New FileWriter (file);
Marshaller Marshaller = New Marshaller (Writer);
Marshaller.Setmapping (MAP);
Marshaller.Marshal (bean);
// Now restore the value and list what we get
Reader Reader = New FileReader (File);
UNMARSHALLER UNMARSHALLER = New Unmarshaller (MAP);
Flightbean Read = (Flightbean) UNMARSHALLER.Unmarshal (Reader);
System.out.println ("Flight" Read.getCarrier ()
Read.getNumber () "Departing at"
Read.getDeparturetime () "And Arriving At" Read.GetarrivalTime ());
} catch (ioException ex) {
EX.PrintStackTrace (System.err);
} catch (MARSHALEXCEPTION EX) {
EX.PrintStackTrace (System.err);
} catch (validationException ex) {
EX.PrintStackTrace (System.err);
}
Catch (mappingexception ex) {
EX.PrintStackTrace (System.err);
}
}
}
Ø: The XML file generated by the default usage is as follows:
42A
23A
Means of
• An attribute for creating an element for an attribute having a basic type value (this example is disclosed in the int value) by the getNumber () method).
• A child element of the root element (all other properties in this example because they are strings).
Ø The XML file generated by the standard method is as follows:
This is usually our expectation, so that it is only to generate the format we expect because we use the map format description file. It is also an XML file:
"- // EXOLAB / CASTOR MAPPING DTD VERSION 1.0 // en"
"http://castor.exolab.org/mapping.dtd">
· Note Class Class
Name in the label should be a full name with the packaged JavaBean class
· Map-to XML = "flight"
Refers to the root node of the XML file, case sensitive
· AUTO-Complete = "false" or Number attribute when there is no auto-complete property
