instancebinding.java

一个工作流的原型

/*
 * InstanceBinding.java
 *
 * Created on 2004年12月22日, 下午4:20
 */

package workflow.xwfbox.engine;

import org.exolab.castor.mapping.*;
import org.exolab.castor.xml.*;

import java.io.*;


/**
 *
 * @author  Administrator
 */
public class InstanceBinding {
    
    /** Creates a new instance of InstanceBinding */
    public InstanceBinding() {
    }
    public static Object getXMLInfo(String inXMLFile, String bindMapping) {
        Object read = null;
        try {
            // write it out as XML (if not already present)
            Mapping map = new Mapping();
            map.loadMapping(bindMapping);
            File inFile = new File(inXMLFile);
            if (inFile.exists()) {
                // now restore the value and list what we get
                Reader reader = new FileReader(inFile);
                Unmarshaller unmarshaller = new Unmarshaller(map);
                unmarshaller.setIgnoreExtraElements(true);
                read = unmarshaller.unmarshal(reader);
            }
        } catch (IOException ex) {
            ex.printStackTrace(System.err);
        } catch (MappingException ex) {
            ex.printStackTrace(System.err);
        } catch (MarshalException ex) {
            ex.printStackTrace(System.err);
        } catch (ValidationException ex) {
            ex.printStackTrace(System.err);
        }
        return read;
    }
    

    
    public static int putXMLInfo(Object xmlObj, String outXML, String bindMapping) {
        int ret = 0;
        try {
            // write it out as XML (if not already present)
            Mapping map = new Mapping();
            map.loadMapping(bindMapping);
            String encoding = "gb2312";
            FileOutputStream outFile = new FileOutputStream(outXML);
            OutputStreamWriter writer = new OutputStreamWriter(outFile,encoding);
            Marshaller marshaller = new Marshaller(writer);
            marshaller.setEncoding(encoding);
            marshaller.setMapping(map);
            marshaller.marshal(xmlObj);
        } catch (IOException ex) {
            ex.printStackTrace(System.err);ret = 1;
        } catch (MappingException ex) {
            ex.printStackTrace(System.err);ret = 2;
        } catch (MarshalException ex) {
            ex.printStackTrace(System.err);ret = 3;
        } catch (ValidationException ex) {
            ex.printStackTrace(System.err);ret = 4;
        }
        return ret;
    }
    
}