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    1   /*
    2    * Copyright (c) 1999, 2004, Oracle and/or its affiliates. All rights reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Oracle designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Oracle in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   22    * or visit www.oracle.com if you need additional information or have any
   23    * questions.
   24    */
   25   
   26   package com.sun.tools.example.debug.event;
   27   
   28   import com.sun.jdi;
   29   import com.sun.jdi.event;
   30   import com.sun.jdi.request;
   31   
   32   import java.util;
   33   
   34   public abstract class AbstractEventSet extends EventObject implements EventSet {
   35   
   36       private static final long serialVersionUID = 2772717574222076977L;
   37       private final EventSet jdiEventSet;
   38       final Event oneEvent;
   39   
   40       /**
   41        */
   42       AbstractEventSet(EventSet jdiEventSet) {
   43           super(jdiEventSet.virtualMachine());
   44           this.jdiEventSet = jdiEventSet;
   45           this.oneEvent = eventIterator().nextEvent();
   46       }
   47   
   48       public static AbstractEventSet toSpecificEventSet(EventSet jdiEventSet) {
   49           Event evt = jdiEventSet.eventIterator().nextEvent();
   50           if (evt instanceof LocatableEvent) {
   51               if (evt instanceof ExceptionEvent) {
   52                   return new ExceptionEventSet(jdiEventSet);
   53               } else if (evt instanceof WatchpointEvent) {
   54                   if (evt instanceof AccessWatchpointEvent) {
   55                       return new AccessWatchpointEventSet(jdiEventSet);
   56                   } else {
   57                       return new ModificationWatchpointEventSet(jdiEventSet);
   58                   }
   59               } else {
   60                   return new LocationTriggerEventSet(jdiEventSet);
   61               }
   62           } else if (evt instanceof ClassPrepareEvent) {
   63               return new ClassPrepareEventSet(jdiEventSet);
   64           } else if (evt instanceof ClassUnloadEvent) {
   65               return new ClassUnloadEventSet(jdiEventSet);
   66           } else if (evt instanceof ThreadDeathEvent) {
   67               return new ThreadDeathEventSet(jdiEventSet);
   68           } else if (evt instanceof ThreadStartEvent) {
   69               return new ThreadStartEventSet(jdiEventSet);
   70           } else if (evt instanceof VMDeathEvent) {
   71               return new VMDeathEventSet(jdiEventSet);
   72           } else if (evt instanceof VMDisconnectEvent) {
   73               return new VMDisconnectEventSet(jdiEventSet);
   74           } else if (evt instanceof VMStartEvent) {
   75               return new VMStartEventSet(jdiEventSet);
   76           } else {
   77               throw new IllegalArgumentException("Unknown event " + evt);
   78           }
   79       }
   80   
   81       public abstract void notify(JDIListener listener);
   82   
   83       // Implement Mirror
   84   
   85       @Override
   86       public VirtualMachine virtualMachine() {
   87           return jdiEventSet.virtualMachine();
   88       }
   89   
   90       public VirtualMachine getVirtualMachine() {
   91           return jdiEventSet.virtualMachine();
   92       }
   93   
   94       // Implement EventSet
   95   
   96       /**
   97        * Returns the policy used to suspend threads in the target VM
   98        * for this event set. This policy is selected from the suspend
   99        * policies for each event's request. The one that suspends the
  100        * most threads is chosen when the event occurs in the target VM
  101        * and that policy is returned here. See
  102        * com.sun.jdi.request.EventRequest for the possible policy values.
  103        *
  104        * @return the integer suspendPolicy
  105        */
  106       public int getSuspendPolicy() {
  107           return jdiEventSet.suspendPolicy();
  108       }
  109   
  110       @Override
  111       public void resume() {
  112           jdiEventSet.resume();
  113       }
  114   
  115       @Override
  116       public int suspendPolicy() {
  117           return jdiEventSet.suspendPolicy();
  118       }
  119   
  120       public boolean suspendedAll() {
  121           return jdiEventSet.suspendPolicy() == EventRequest.SUSPEND_ALL;
  122       }
  123   
  124       public boolean suspendedEventThread() {
  125           return jdiEventSet.suspendPolicy() == EventRequest.SUSPEND_EVENT_THREAD;
  126       }
  127   
  128       public boolean suspendedNone() {
  129           return jdiEventSet.suspendPolicy() == EventRequest.SUSPEND_NONE;
  130       }
  131   
  132       /**
  133        * Return an iterator specific to {@link Event} objects.
  134        */
  135       @Override
  136       public EventIterator eventIterator() {
  137           return jdiEventSet.eventIterator();
  138       }
  139   
  140   
  141       // Implement java.util.Set (by pass through)
  142   
  143       /**
  144        * Returns the number of elements in this set (its cardinality).  If this
  145        * set contains more than <tt>Integer.MAX_VALUE</tt> elements, returns
  146        * <tt>Integer.MAX_VALUE</tt>.
  147        *
  148        * @return the number of elements in this set (its cardinality).
  149        */
  150       @Override
  151       public int size() {
  152           return jdiEventSet.size();
  153       }
  154   
  155       /**
  156        * Returns <tt>true</tt> if this set contains no elements.
  157        *
  158        * @return <tt>true</tt> if this set contains no elements.
  159        */
  160       @Override
  161       public boolean isEmpty() {
  162           return jdiEventSet.isEmpty();
  163       }
  164   
  165       /**
  166        * Returns <tt>true</tt> if this set contains the specified element.  More
  167        * formally, returns <tt>true</tt> if and only if this set contains an
  168        * element <code>e</code> such that <code>(o==null ? e==null :
  169        * o.equals(e))</code>.
  170        *
  171        * @return <tt>true</tt> if this set contains the specified element.
  172        */
  173       @Override
  174       public boolean contains(Object o) {
  175           return jdiEventSet.contains(o);
  176       }
  177   
  178       /**
  179        * Returns an iterator over the elements in this set.  The elements are
  180        * returned in no particular order (unless this set is an instance of some
  181        * class that provides a guarantee).
  182        *
  183        * @return an iterator over the elements in this set.
  184        */
  185       @Override
  186       public Iterator<Event> iterator() {
  187           return jdiEventSet.iterator();
  188       }
  189   
  190       /**
  191        * Returns an array containing all of the elements in this set.
  192        * Obeys the general contract of the <tt>Collection.toArray</tt> method.
  193        *
  194        * @return an array containing all of the elements in this set.
  195        */
  196       @Override
  197       public Object[] toArray() {
  198           return jdiEventSet.toArray();
  199       }
  200   
  201       /**
  202        * Returns an array containing all of the elements in this set whose
  203        * runtime type is that of the specified array.  Obeys the general
  204        * contract of the <tt>Collection.toArray(Object[])</tt> method.
  205        *
  206        * @param a the array into which the elements of this set are to
  207        *          be stored, if it is big enough {
  208           return jdiEventSet.XXX();
  209       } otherwise, a new array of the
  210        *          same runtime type is allocated for this purpose.
  211        * @return an array containing the elements of this set.
  212        * @throws    ArrayStoreException the runtime type of a is not a supertype
  213        * of the runtime type of every element in this set.
  214        */
  215       @Override
  216       public <T> T[] toArray(T a[]) {
  217           return jdiEventSet.toArray(a);
  218       }
  219   
  220       // Bulk Operations
  221   
  222       /**
  223        * Returns <tt>true</tt> if this set contains all of the elements of the
  224        * specified collection.  If the specified collection is also a set, this
  225        * method returns <tt>true</tt> if it is a <i>subset</i> of this set.
  226        *
  227        * @param c collection to be checked for containment in this set.
  228        * @return <tt>true</tt> if this set contains all of the elements of the
  229        *         specified collection.
  230        */
  231       @Override
  232       public boolean containsAll(Collection<?> c) {
  233           return jdiEventSet.containsAll(c);
  234       }
  235   
  236   
  237       // Make the rest of Set unmodifiable
  238   
  239       @Override
  240       public boolean add(Event e){
  241           throw new UnsupportedOperationException();
  242       }
  243       @Override
  244       public boolean remove(Object o) {
  245           throw new UnsupportedOperationException();
  246       }
  247       @Override
  248       public boolean addAll(Collection<? extends Event> coll) {
  249           throw new UnsupportedOperationException();
  250       }
  251       @Override
  252       public boolean removeAll(Collection<?> coll) {
  253           throw new UnsupportedOperationException();
  254       }
  255       @Override
  256       public boolean retainAll(Collection<?> coll) {
  257           throw new UnsupportedOperationException();
  258       }
  259       @Override
  260       public void clear() {
  261           throw new UnsupportedOperationException();
  262       }
  263   }

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