2 Copyright (C) 2005, 2006 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
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14 General Public License for more details.
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21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
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31 independent module, the terms and conditions of the license of that
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35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
39 package org.omg.CORBA.portable;
41 import org.omg.CORBA.BAD_PARAM;
42 import org.omg.CORBA.Context;
43 import org.omg.CORBA.ContextList;
44 import org.omg.CORBA.DomainManager;
45 import org.omg.CORBA.ExceptionList;
46 import org.omg.CORBA.NVList;
47 import org.omg.CORBA.NamedValue;
48 import org.omg.CORBA.ORB;
49 import org.omg.CORBA.Policy;
50 import org.omg.CORBA.Request;
51 import org.omg.CORBA.SetOverrideType;
54 * The basic implementation of the CORBA Object. The most of the methods
55 * delegate the functionality to the {@link Delegate} that can be replaced
56 * by {@link #_set_delegate(Delegate)}.
58 * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
60 public abstract class ObjectImpl
61 implements org.omg.CORBA.Object
64 * The delegate, responsible for the method implementations.
66 transient Delegate delegate;
69 * Create a request to invoke the method of this object, specifying
70 * context list and the list of the expected exception.
72 * @param context a list of additional properties.
73 * @param operation the name of method to be invoked.
74 * @param parameters the method parameters.
75 * @param returns the container for tge method returned value.
76 * @param exceptions the list of the possible exceptions that the method
78 * @param ctx_list the list of the context strings that need to be
79 * resolved and send as a context instance.
81 * @return the created reaquest.
83 public Request _create_request(Context context, String operation,
84 NVList parameters, NamedValue returns,
85 ExceptionList exceptions, ContextList ctx_list
88 return delegate.create_request(this, context, operation, parameters,
89 returns, exceptions, ctx_list
94 * Create a request to invoke the method of this object.
96 * @param context a list of additional properties.
97 * @param operation the name of method to be invoked.
98 * @param parameters the method parameters.
99 * @param returns the container for tge method returned value.
101 * @return the created reaquest.
103 public Request _create_request(Context context, String operation,
104 NVList parameters, NamedValue returns
107 return delegate.create_request(this, context, operation, parameters, returns);
111 * Duplicate the object reference. This does not make much sense for
112 * java platform and is just included for the sake of compliance with
115 * The method may return the object reference itself.
117 * @return as a rule, <code>this</code>.
119 public org.omg.CORBA.Object _duplicate()
121 return delegate.duplicate(this);
125 * Get vendor specific delegate, responsible for the implemented
128 public Delegate _get_delegate()
134 * Retrieve the domain managers for this object.
136 * @return the domain managers.
138 public DomainManager[] _get_domain_managers()
140 return delegate.get_domain_managers(this);
144 * Get the <code>InterfaceDef</code> for this Object.
146 public org.omg.CORBA.Object _get_interface_def()
148 return delegate.get_interface_def(this);
152 * Returns the {@link Policy}, applying to this object.
154 * @param a_policy_type a type of policy to be obtained.
155 * @return a corresponding Policy object.
157 * @throws BAD_PARAM if the policy of the given type is not
158 * associated with this object, or if it is not supported by this ORB.
160 public Policy _get_policy(int a_policy_type)
162 return delegate.get_policy(this, a_policy_type);
166 * Get the array of interface repository ids, defining this object.
168 public abstract String[] _ids();
171 * Get the hashcode this object reference. The same hashcode still
172 * does not means that the references are the same. From the other
173 * side, two different references may still refer to the same CORBA
174 * object. The returned value must not change during the object
177 * @param max the maximal value to return.
179 * @return the hashcode.
181 public int _hash(int max)
183 return delegate.hash(this, max);
187 * Invoke the operation.
189 * @param output the stream, containing the written arguments.
191 * @return the stream, from where the input parameters could be read.
193 * @throws ApplicationException if the application throws an exception,
194 * defined as a part of its remote method definition.
196 * @throws RemarshalException if reading(remarshalling) fails.
198 public InputStream _invoke(OutputStream output)
199 throws org.omg.CORBA.portable.ApplicationException,
200 org.omg.CORBA.portable.RemarshalException
202 return delegate.invoke(this, output);
206 * Check if this object can be referenced by the given repository id.
208 * @param idl_id the repository id.
210 * @return true if the passed parameter is a repository id of this
213 public boolean _is_a(String idl_id)
215 return delegate.is_a(this, idl_id);
219 * Return true if the other object references are equivalent, so far as
220 * it is possible to determine this easily.
222 * @param other the other object reference.
224 * @return true if both references refer the same object, false
225 * if they probably can refer different objects. Uses direct
226 * comparison if the delegate has not been set.
228 public boolean _is_equivalent(org.omg.CORBA.Object other)
230 return (delegate == null) ? this == other
231 : delegate.is_equivalent(this, other);
235 * Returns true if the object is local.
237 * @return false, always (following 1.4 specs). Override to get
240 public boolean _is_local()
242 return delegate.is_local(this);
246 * Determines if the server object for this reference has already
249 * @return true if the object has been destroyed, false otherwise.
251 public boolean _non_existent()
253 return delegate.non_existent(this);
257 * Provides the reference to ORB.
259 * @return the associated ORB.
263 return delegate.orb(this);
267 * Free resoureces, occupied by this reference. The object implementation
268 * is not notified, and the other references to the same object are not
271 public void _release()
273 delegate.release(this);
277 * Release the reply stream back to ORB after finishing reading the data
280 * @param stream the stream, normally returned by {@link #_invoke} or
281 * {@link ApplicationException#getInputStream()}, can be null.
283 public void _releaseReply(InputStream stream)
285 if (delegate != null)
286 delegate.releaseReply(this, stream);
290 * Create a request to invoke the method of this CORBA object.
292 * @param method the name of the method to invoke.
294 * @return the request.
296 public Request _request(String method)
298 return delegate.request(this, method);
302 * Create a request to invoke the method of this CORBA object.
304 * @param method the name of the method to invoke.
305 * @param response_expected specifies if this is one way message or the
306 * response to the message is expected.
308 * @return the stream where the method arguments should be written.
310 public org.omg.CORBA.portable.OutputStream _request(String method,
311 boolean response_expected
314 return delegate.request(this, method, response_expected);
318 * This method is always called after invoking the operation on the
321 * The default method returns without action.
323 * @param servant the servant.
325 public void _servant_postinvoke(ServantObject servant)
327 delegate.servant_postinvoke(this, servant);
331 * Returns a servant that should be used for this request.
332 * The servant can also be casted to the expected type, calling the
333 * required method directly.
335 * @param method the operation
336 * @param expected_type the expected type of the servant.
338 * This implementation always returns null; override for different
341 * @return the servant or null if the servant is not an expected type
342 * of the method is not supported, for example, due security reasons.
344 public ServantObject _servant_preinvoke(String method, Class expected_type)
346 return delegate.servant_preinvoke(this, method, expected_type);
350 * Set the delegate, responsible for the implemented functionality.
352 * @param a_delegate a delegate, responsible for the implemented
355 public void _set_delegate(Delegate a_delegate)
357 delegate = a_delegate;
361 * Returns a new object with the new policies either replacing or
362 * extending the current policies, depending on the second parameter.
364 * @param policies the policy additions or replacements.
365 * @param how either {@link SetOverrideType#SET_OVERRIDE} to override the
366 * current policies of {@link SetOverrideType#ADD_OVERRIDE} to replace
369 public org.omg.CORBA.Object _set_policy_override(Policy[] policies,
373 return delegate.set_policy_override(this, policies, how);
377 * Check if this object is equal to another object.
379 * @param other the other object to compare.
381 * @return true if the objects are equal.
383 public boolean equals(java.lang.Object other)
385 if (delegate == null)
386 return this == other;
388 return delegate.equals(this, other);
392 * Return the string representation of the passed object.
394 * @return the string representation.
396 public String toString()
398 return delegate.toString(this);