configregisterdescriptor.java

一个很好实用的工作流OSWORKFLOW开发例子.有着非常优秀的灵活性.

package com.opensymphony.workflow.loader;

import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.w3c.dom.Element;

/**
 * @author Andrea Capitani (Leonardo Multimedia S.r.l.)
 */
public class ConfigRegisterDescriptor extends RegisterDescriptor implements ArgsAware
{
  protected String plugin;
	protected String description;
  protected List modifiableArgs = new ArrayList();
  protected Map argTypeMap = new HashMap(); 
	private PaletteDescriptor palette;

	public ConfigRegisterDescriptor(PaletteDescriptor palette)
  {
		this.palette = palette;
  }

  public ConfigRegisterDescriptor(PaletteDescriptor palette, Element register)
  {
	  this.palette = palette;
    init(register);
  }

  public ConfigRegisterDescriptor(ConfigRegisterDescriptor other)
  {
    this.setPlugin(other.getPlugin());
    this.setVariableName(other.getVariableName());
    this.setType(other.getType());
    this.getArgs().putAll(other.getArgs());
		description = other.description;
	  modifiableArgs = other.modifiableArgs;
	  palette = other.palette;
  }

	public PaletteDescriptor getPalette()
	{
		return palette;
	}

	public void setPalette(PaletteDescriptor palette)
	{
		this.palette = palette;
	}

  protected void init(Element register)
  {
    type = register.getAttribute("type");

		List args = XMLUtil.getChildElements(register, "arg");
    for(int l = 0; l < args.size(); l++)
    {
      Element arg = (Element)args.get(l);
      this.args.put(arg.getAttribute("name"), XMLUtil.getText(arg));
      if("true".equals(arg.getAttribute("modifiable")))
      {
        modifiableArgs.add(arg.getAttribute("name"));
				String sArgType = arg.getAttribute("argtype");
				if (sArgType!=null)
				{
					ArgType at = (ArgType)palette.getArgType(sArgType);
					if (at!=null)
					{
						argTypeMap.put(arg.getAttribute("name"), at);
					}
				}
      }
    }
    plugin = XMLUtil.getChildText(register, "plugin");
    variableName = XMLUtil.getChildText(register, "variable-name");
  }

  public boolean isArgModifiable(String name)
  {
    return modifiableArgs.contains(name);
  }

	public ArgType getArgType(String name)
	{
		return (ArgType)argTypeMap.get(name);
	}

  public void writeXML(PrintWriter writer, int indent)
  {
    throw new UnsupportedOperationException();
  }
	
	public String getName()
	{
		return variableName;
	}
	
	public String getDescription()
	{
		return description;
	}
	
  public String getPlugin()
  {
    return plugin;
  }
	
	public void setDescription(String string)
	{
		description = string;
	}
	
  public void setPlugin(String string)
  {
    plugin = string;
  }

	public String toString()
	{
		return variableName;
	}
}