Jumbo patch:

* Imported beans and serialization
* Updated IA-64 port
* Miscellaneous bug fixes

From-SVN: r34028

libjava/java/beans/Beans.java

@@ -0,0 +1,199 @@
+/* java.beans.Beans
+   Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+ 
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public License. */
+
+
+package java.beans;
+
+import java.io.*;
+// import java.applet.*;
+import gnu.java.io.*;
+
+/**
+ * <code>Beans</code> provides some helper methods that allow the basic operations of Bean-ness.
+ *
+ * @author John Keiser
+ * @since JDK1.1
+ * @version 1.1.0, 29 Jul 1998
+ *
+ */
+public class Beans {
+	static boolean designTime = false;
+	static boolean guiAvailable = true;
+
+
+	/**
+	 * Once again, we have a java.beans class with only
+	 * static methods that can be instantiated.  When
+	 * will the madness end? :)
+	 */
+	public Beans() {
+	}
+
+	/**
+	 * Allows you to instantiate a Bean.  This method takes
+	 * a ClassLoader from which to read the Bean and the
+	 * name of the Bean.<P>
+	 *
+	 * The Bean name should be a dotted name, like a class.
+	 * It can represent several things.  Beans will search
+	 * for the Bean using the name like this:<P>
+	 * <OL>
+	 * <LI>Searches for a serialized instance of the Bean
+	 * using getResource(), mangling the Bean name by
+	 * replacing the dots with slashes and appending .ser
+	 * (for example, gnu.beans.BlahDeBlah would cause
+	 * Beans to search for gnu/beans/BlahDeBlah.ser using
+	 * getResource()).</LI>
+	 * <LI>Searches for the Bean class using the beanName,
+	 * and then instantiates it with the no-arg constructor.
+	 * At that point, if it is an Applet, it provides it
+	 * with AppletContext and AppletStub, and then calls
+	 * init().</LI>
+	 * </OL>
+	 * @param cl the ClassLoader to use, or <CODE>null</CODE>
+	 *        to use the default ClassLoader.
+	 * @param beanName the name of the Bean.
+	 * @return the Bean.
+	 * @XXX
+	 */
+	public static Object instantiate(ClassLoader cl, String beanName) throws IOException, ClassNotFoundException {
+		Object bean;
+
+		InputStream serStream;
+		if(cl == null) {
+			serStream = ClassLoader.getSystemResourceAsStream(beanName.replace('.','/')+".ser");
+		} else {
+			serStream = cl.getResourceAsStream(beanName.replace('.','/')+".ser");
+		}
+		if(serStream != null) {
+			if(cl == null) {
+				ObjectInputStream ois = new ObjectInputStream(serStream);
+				bean = ois.readObject();
+			} else {
+				ClassLoaderObjectInputStream ois = new ClassLoaderObjectInputStream(serStream, cl);
+				bean = ois.readObject();
+			}
+		} else if(cl == null) {
+			Class beanClass = Class.forName(beanName);
+			try {
+				bean = beanClass.newInstance();
+			} catch(IllegalAccessException E) {
+				bean = null;
+			} catch(InstantiationException E) {
+				bean = null;
+			}
+		} else {
+			Class beanClass = cl.loadClass(beanName);
+			try {
+				bean = beanClass.newInstance();
+			} catch(IllegalAccessException E) {
+				bean = null;
+			} catch(InstantiationException E) {
+				bean = null;
+			}
+		}
+
+/* FIXME - Turned off since java.applet doesn't exist for libgcj.
+ * FIXME		if(bean instanceof Applet) {
+ * FIXME			Applet a = (Applet)bean;
+ * FIXME			//a.setAppletContext(???);
+ * FIXME			//a.setStub(???);
+ * FIXME			if(serStream == null) {
+ * FIXME				a.init();
+ * FIXME			}
+ * FIXME		}
+ * FIXME ********************************************************/
+
+		return bean;
+	}
+
+	/**
+	 * Get the Bean as a different class type.
+	 * This should be used instead of casting to get a new
+	 * type view of a Bean, because in the future there may
+	 * be new types of Bean, even Beans spanning multiple
+	 * Objects.
+	 * @param bean the Bean to cast.
+	 * @param newClass the Class to cast it to.
+	 * @return the Bean as a new view, or if the operation
+	 *         could not be performed, the Bean itself.
+	 */
+	public static Object getInstanceOf(Object bean, Class newClass) {
+		return bean;
+	}
+
+	/**
+	 * Determine whether the Bean can be cast to a different
+	 * class type.
+	 * This should be used instead of instanceof to determine
+	 * a Bean's castability, because in the future there may
+	 * be new types of Bean, even Beans spanning multiple
+	 * Objects.
+	 * @param bean the Bean to cast.
+	 * @param newClass the Class to cast it to.
+	 * @return whether the Bean can be cast to the class type
+	 *         in question.
+	 */
+	public static boolean isInstanceOf(Object bean, Class newBeanClass) {
+		return newBeanClass.isInstance(bean);
+	}
+
+	/**
+	 * Find out whether the GUI is available to use.
+	 * Defaults to true.
+	 * @return whether the GUI is available to use.
+	 */
+	public static boolean isGuiAvailable() {
+		return guiAvailable;
+	}
+
+	/**
+	 * Find out whether it is design time.  Design time means
+	 * we are in a RAD tool.
+	 * Defaults to false.
+	 * @return whether it is design time.
+	 */
+	public static boolean isDesignTime() {
+		return designTime;
+	}
+
+	/**
+	 * Set whether the GUI is available to use.
+	 * @param guiAvailable whether the GUI is available to use.
+	 */
+	public static void setGuiAvailable(boolean guiAvailable) throws SecurityException {
+		Beans.guiAvailable = guiAvailable;
+	}
+
+	/**
+	 * Set whether it is design time.  Design time means we
+	 * are in a RAD tool.
+	 * @param designTime whether it is design time.
+	 */
+	public static void setDesignTime(boolean designTime) throws SecurityException {
+		Beans.designTime = designTime;
+	}
+}