Scala example source code file (ScalaBeanInfo.scala)

This example Scala source code file (ScalaBeanInfo.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

array, array, methoddescriptor, methoddescriptor, propertydescriptor, propertydescriptor, scalabeaninfo, scalabeaninfo

The Scala ScalaBeanInfo.scala source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2002-2011, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */


package scala.reflect

/** Provides some simple runtime processing necessary to create
 *  JavaBean descriptors for Scala entities. The compiler creates
 *  subclasses of this class automatically when the BeanInfo annotation is
 *  attached to a class. 
 *
 *  @author Ross Judson (rjudson@managedobjects.com)
 */
abstract class ScalaBeanInfo(clazz: java.lang.Class[_], 
                             props: Array[String], 
                             methods: Array[String]) extends java.beans.SimpleBeanInfo {

  import java.beans._
  
  private val pd = new Array[PropertyDescriptor](props.length / 3)
  private val md = 
    for (m <- clazz.getMethods if methods.exists(_ == m.getName))
      yield new MethodDescriptor(m)

  init
  
  override def getPropertyDescriptors() = pd
  override def getMethodDescriptors() = md

  // override def getAdditionalBeanInfo() = Array(Introspector getBeanInfo clazz.getSuperclass)

  private def init() {
    var i = 0;
    while (i < props.length) {
      pd(i/3) = new PropertyDescriptor(props(i), clazz, props(i+1), props(i+2))
      i = i + 3;
    }
  }
  
}