diff options
Diffstat (limited to 'libjava/classpath/gnu/javax/rmi/CORBA/UtilDelegateImpl.java')
| -rw-r--r-- | libjava/classpath/gnu/javax/rmi/CORBA/UtilDelegateImpl.java | 714 |
1 files changed, 658 insertions, 56 deletions
diff --git a/libjava/classpath/gnu/javax/rmi/CORBA/UtilDelegateImpl.java b/libjava/classpath/gnu/javax/rmi/CORBA/UtilDelegateImpl.java index 7bed2aa22dc..66a4e24ff18 100644 --- a/libjava/classpath/gnu/javax/rmi/CORBA/UtilDelegateImpl.java +++ b/libjava/classpath/gnu/javax/rmi/CORBA/UtilDelegateImpl.java @@ -1,5 +1,5 @@ -/* UtilDelegateImpl.java -- - Copyright (C) 2002 Free Software Foundation, Inc. +/* UtilDelegateImpl.java -- + Copyright (C) 2002, 2005 Free Software Foundation, Inc. This file is part of GNU Classpath. @@ -38,115 +38,717 @@ exception statement from your version. */ package gnu.javax.rmi.CORBA; +import gnu.CORBA.Minor; +import gnu.CORBA.ObjectCreator; +import gnu.CORBA.Poa.ORB_1_4; +import gnu.CORBA.Poa.AOM; +import gnu.CORBA.Poa.gnuPOA; +import gnu.CORBA.typecodes.GeneralTypeCode; + +import org.omg.CORBA.Any; +import org.omg.CORBA.BAD_PARAM; +import org.omg.CORBA.COMM_FAILURE; +import org.omg.CORBA.CompletionStatus; +import org.omg.CORBA.INVALID_TRANSACTION; +import org.omg.CORBA.INV_OBJREF; +import org.omg.CORBA.MARSHAL; +import org.omg.CORBA.NO_PERMISSION; +import org.omg.CORBA.OBJECT_NOT_EXIST; +import org.omg.CORBA.OMGVMCID; +import org.omg.CORBA.ORB; +import org.omg.CORBA.SystemException; +import org.omg.CORBA.TCKind; +import org.omg.CORBA.TRANSACTION_REQUIRED; +import org.omg.CORBA.TRANSACTION_ROLLEDBACK; +import org.omg.CORBA.TypeCode; +import org.omg.CORBA.UNKNOWN; +import org.omg.CORBA.portable.InputStream; +import org.omg.CORBA.portable.OutputStream; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.io.Serializable; +import java.rmi.AccessException; +import java.rmi.MarshalException; +import java.rmi.NoSuchObjectException; import java.rmi.Remote; import java.rmi.RemoteException; +import java.rmi.ServerError; +import java.rmi.ServerException; +import java.rmi.UnexpectedException; import java.rmi.server.RMIClassLoader; -import java.net.MalformedURLException; -import java.io.*; -//import org.omg.CORBA.ORB; -//import org.omg.CORBA.SystemException; -//import org.omg.CORBA.portable.InputStream; -//import org.omg.CORBA.portable.OutputStream; -import javax.rmi.CORBA.*; +import java.util.Hashtable; + +import javax.rmi.CORBA.Stub; +import javax.rmi.CORBA.Tie; +import javax.rmi.CORBA.Util; +import javax.rmi.CORBA.UtilDelegate; +import javax.rmi.CORBA.ValueHandler; +import javax.transaction.InvalidTransactionException; +import javax.transaction.TransactionRequiredException; +import javax.transaction.TransactionRolledbackException; +/** + * The implementation of UtilDelegate. + * + * @author Wu Gansha (gansha.wu@intel.com) (stub) + * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) (implementation) + */ public class UtilDelegateImpl + extends RmiUtilities implements UtilDelegate { - // XXX javax.rmi.ORB -> org.omg.CORBA.ORB - public Object copyObject(Object obj, javax.rmi.ORB orb) + /** + * The instance of the value handler, requested once. + */ + static ValueHandler m_ValueHandler; + + /** + * The global map of all ties to they records. + */ + static Hashtable m_Ties = new Hashtable(); + + /** + * The global map of all targets to they records. + */ + static Hashtable m_Targets = new Hashtable(); + + /** + * The standard package for that the exception names are omitted. + */ + static final String m_StandardPackage = "org.omg.CORBA."; + + /** + * Make a deep copy of the object. + */ + public Object copyObject(Object obj, ORB orb) throws RemoteException { - throw new Error("Not implemented for UtilDelegate"); + // Strings are immutable, can be shared. + if (obj instanceof String) + return obj; + else if (obj == null) + return null; + else if (obj instanceof String[] || obj instanceof String[][] + || obj instanceof String[][][]) + { + // String arrays can be just cloned. + return ((Object[]) obj).clone(); + } + else if (obj instanceof Serializable) + { + try + { + ByteArrayOutputStream a = new ByteArrayOutputStream(); + ObjectOutputStream ou = new ObjectOutputStream(a); + ou.writeObject(obj); + ou.close(); + ObjectInputStream input = new ObjectInputStream( + new ByteArrayInputStream(a.toByteArray())); + return input.readObject(); + } + catch (Exception ex) + { + RemoteException rex = new RemoteException("Cannot copy " + obj); + throw rex; + } + } + else + return obj; } - // XXX javax.rmi.ORB -> org.omg.CORBA.ORB - public Object[] copyObjects(Object obj[], javax.rmi.ORB orb) + /** + * Make a deep copy of the object array. + */ + public Object[] copyObjects(Object[] obj, ORB orb) throws RemoteException { - throw new Error("Not implemented for UtilDelegate"); + return (Object[]) copyObject(obj, orb); } public ValueHandler createValueHandler() { - throw new Error("Not implemented for UtilDelegate"); + if (m_ValueHandler == null) + m_ValueHandler = (ValueHandler) DelegateFactory.getInstance(DelegateFactory.VALUEHANDLER); + return m_ValueHandler; } - + + /** + * Returns the codebase of the given class. + */ public String getCodebase(Class clz) { - throw new Error("Not implemented for UtilDelegate"); + return RMIClassLoader.getClassAnnotation(clz); } - + + /** + * Get the Tie that handles invocations on the given target. If the target/Tie + * pair has not been previously registered using {@link #registerTarget}, + * this method tries to locate a tie class by the name pattern. If this + * succeeds, the tie-target pair is also registered. + * + * @return the Tie. + */ public Tie getTie(Remote target) { - throw new Error("Not implemented for UtilDelegate"); + synchronized (m_Targets) + { + Tie tie; + TieTargetRecord r = ((TieTargetRecord) m_Targets.get(target)); + if (r == null) + { + if (target instanceof Stub) + { + tie = StubDelegateImpl.getTieFromStub(target); + registerTarget(tie, target); + } + else + { + // Treat this as implementation. + String tieClassName = getTieClassName(target.getClass().getName()); + try + { + Class tieClass = Util.loadClass(tieClassName, null, + target.getClass().getClassLoader()); + tie = (Tie) tieClass.newInstance(); + } + catch (Exception e) + { + MARSHAL m = new MARSHAL("Unable to instantiate " + + tieClassName); + m.minor = Minor.TargetConversion; + m.initCause(e); + throw m; + } + tie.setTarget(target); + registerTarget(tie, target); + } + } + else + tie = r.tie; + return tie; + } + } + + /** + * Get the Stub class name for the name, representing the given interface. + */ + private String getTieClassName(String interf) + { + String stubClassName; + int p = interf.lastIndexOf('.'); + + if (p < 0) + // The interface is defined in the default package. + stubClassName = "_" + interf + "_Tie"; + else + stubClassName = interf.substring(0, p + 1) + "_" + + interf.substring(p + 1) + "_Tie"; + return stubClassName; } - + + /** + * Register the Tie-target pair. As the Tie is a Servant, it can potentially + * be connected to several objects and hence may be registered with several + * targets. + */ + public void registerTarget(Tie tie, Remote target) + { + synchronized (m_Ties) + { + synchronized (m_Targets) + { + TieTargetRecord r = (TieTargetRecord) m_Ties.get(tie); + if (r == null) + { + // First registration for this Tie. + r = new TieTargetRecord(tie); + m_Ties.put(tie, r); + } + if (target != null) + { + r.add(target); + m_Targets.put(target, r); + } + } + } + } + + /** + * Deactivate the associated Tie, if it is found and is not connected to other + * registered targets. Independing from the POA policies, the transparent + * reactivation will not be possible. + */ + public void unexportObject(Remote target) + throws NoSuchObjectException + { + synchronized (m_Ties) + { + synchronized (m_Targets) + { + TieTargetRecord r = ((TieTargetRecord) m_Targets.get(target)); + if (r != null) + { + if (target instanceof org.omg.CORBA.Object) + r.tie.orb().disconnect((org.omg.CORBA.Object) target); + + if (r.unused()) + { + m_Targets.remove(target); + m_Ties.remove(r.tie); + r.tie.deactivate(); + + if (r.tie.orb() instanceof ORB_1_4) + { + // Standard case, when more deep cleanup is possible. + // Independing from the POA policies, the object will + // not be activable transparently. + ORB_1_4 orb = (ORB_1_4) r.tie.orb(); + + if (target instanceof org.omg.CORBA.Object) + { + AOM.Obj record = orb.rootPOA.findObject((org.omg.CORBA.Object) target); + + if (record != null && record.servant == r.tie + && record.poa instanceof gnuPOA) + { + ((gnuPOA) record.poa).aom.remove(record.key); + record.deactivated = true; + record.servant = null; + } + } + } + } + } + } + } + } + + /** + * Checks if the given stub is local. + * + * @param stub a stub to check. + * @return true if the stub is local, false otherwise. + */ public boolean isLocal(Stub stub) throws RemoteException { - throw new Error("Not implemented for UtilDelegate"); + try + { + return stub._is_local(); + } + catch (SystemException e) + { + RemoteException rex = new RemoteException(); + rex.initCause(e); + throw rex; + } } + /** + * Load the class. The method uses class loaders from the call stact first. If + * this fails, the further behaviour depends on the System Property + * "java.rmi.server.useCodebaseOnly" with default value "false". + * + * <ul> + * <li>Try the current thread context class loader first.</li> + * <li>If remoteCodebase is non-null and useCodebaseOnly is "false" then call + * java.rmi.server.RMIClassLoader.loadClass (remoteCodebase, className)</li> + * <li> If remoteCodebase is null or useCodebaseOnly is true then call + * java.rmi.server.RMIClassLoader.loadClass(className)</li> + * <li>If a class is still not successfully loaded and the loader != null + * then try Class.forName(className, false, loader). </li> + * </ul> + * + * @param className the name of the class. + * @param remoteCodebase the codebase. + * @param loader the class loader. + * @return the loaded class. + * + * @throws ClassNotFoundException of the class cannot be loaded. + */ public Class loadClass(String className, String remoteCodebase, - ClassLoader loader) + ClassLoader loader) throws ClassNotFoundException { - try{ - if (remoteCodebase == null) - return RMIClassLoader.loadClass(className); - else - return RMIClassLoader.loadClass(remoteCodebase, className); - } - catch (MalformedURLException e1) + if (loader == null) + loader = Thread.currentThread().getContextClassLoader(); + + String p_useCodebaseOnly = System.getProperty("java.rmi.server.useCodebaseOnly"); + + boolean useCodebaseOnly = p_useCodebaseOnly != null + && p_useCodebaseOnly.trim().equalsIgnoreCase("true"); + + try { - throw new ClassNotFoundException(className, e1); + if (remoteCodebase != null && !useCodebaseOnly) + return RMIClassLoader.loadClass(remoteCodebase, className); } - catch(ClassNotFoundException e2) + catch (Exception e) { - if(loader != null) - return loader.loadClass(className); - else - return null; + // This failed but try others. } + + try + { + if (remoteCodebase == null || useCodebaseOnly) + return RMIClassLoader.loadClass(remoteCodebase, className); + } + catch (Exception e) + { + // This failed but try others. + } + + if (loader != null) + return Class.forName(className, true, loader); + + throw new ClassNotFoundException(className + " at " + remoteCodebase); } + /** + * Converts CORBA {@link SystemException} into RMI {@link RemoteException}. + * The exception is converted as defined in the following table: + * <p> + * <table border = "1"> + * <tr> + * <th>CORBA Exception</th> + * <th>RMI Exception</th> + * </tr> + * <tr> + * <td>{@link COMM_FAILURE}</td> + * <td>{@link MarshalException}</td> + * </tr> + * <tr> + * <td>{@link INV_OBJREF}</td> + * <td>{@link NoSuchObjectException}</td> + * </tr> + * <tr> + * <td>{@link NO_PERMISSION}</td> + * <td>{@link AccessException}</td> + * </tr> + * <tr> + * <td>{@link MARSHAL}</td> + * <td>{@link MarshalException}</td> + * </tr> + * <tr> + * <td>{@link BAD_PARAM} (all other cases)</td> + * <td>{@link MarshalException}</td> + * </tr> + * <tr> + * <td>{@link OBJECT_NOT_EXIST}</td> + * <td>{@link NoSuchObjectException}</td> + * </tr> + * <tr> + * <td>{@link TRANSACTION_REQUIRED}</td> + * <td>{@link TransactionRequiredException}</td> + * </tr> + * <tr> + * <td>{@link TRANSACTION_ROLLEDBACK}</td> + * <td>{@link TransactionRolledbackException}</td> + * </tr> + * <tr> + * <td>{@link INVALID_TRANSACTION}</td> + * <td>{@link InvalidTransactionException}</td> + * </tr> + * <tr> + * <td bgcolor="lightgray">Any other {@link SystemException}</td> + * <td bgcolor="lightgray">{@link RemoteException}</td> + * </tr> + * </table> + * </p> + * <p> + * The exception detailed message always consists of + * <ol> + * <li>the string "CORBA "</li> + * <li>the CORBA name of the system exception</li> + * <li>single space</li> + * <li>the hexadecimal value of the system exception's minor code, preceeded + * by 0x (higher bits contain {@link OMGVMCID}).</li> + * <li>single space</li> + * <li>the {@link CompletionStatus} of the exception: "Yes", "No" or "Maybe".</li> + * </ol> + * <p> + * For instance, if the Internet connection was refused: + * </p> + * <p> + * <pre> + * <code>CORBA COMM_FAILURE 0x535500C9 No</code> + * </p> + * <p> + * The original CORBA exception is set as the cause of the RemoteException + * being created. + * </p> + */ public RemoteException mapSystemException(SystemException ex) { - throw new Error("Not implemented for UtilDelegate"); + RemoteException rex; + + String status; + + switch (ex.completed.value()) + { + case CompletionStatus._COMPLETED_MAYBE: + status = "Maybe"; + break; + + case CompletionStatus._COMPLETED_NO: + status = "No"; + break; + + case CompletionStatus._COMPLETED_YES: + status = "Yes"; + break; + + default: + status = "Unexpected completion status " + ex.completed.value(); + } + + String name = ex.getClass().getName(); + + if (name.startsWith(m_StandardPackage)) + name = name.substring(m_StandardPackage.length()); + + String message = "CORBA " + name + " 0x" + Integer.toHexString(ex.minor) + + " " + status; + + if (ex instanceof COMM_FAILURE) + rex = new MarshalException(message, ex); + else if (ex instanceof INV_OBJREF) + { + rex = new NoSuchObjectException(message); + rex.detail = ex; + } + else if (ex instanceof NO_PERMISSION) + rex = new AccessException(message, ex); + else if (ex instanceof MARSHAL) + rex = new MarshalException(message, ex); + else if (ex instanceof BAD_PARAM) + rex = new MarshalException(message, ex); + else if (ex instanceof OBJECT_NOT_EXIST) + { + rex = new NoSuchObjectException(message); + rex.detail = ex; + } + else if (ex instanceof TRANSACTION_REQUIRED) + { + rex = new TransactionRequiredException(message); + rex.detail = ex; + } + else if (ex instanceof TRANSACTION_ROLLEDBACK) + { + rex = new TransactionRolledbackException(message); + rex.detail = ex; + } + else if (ex instanceof INVALID_TRANSACTION) + { + rex = new InvalidTransactionException(message); + rex.detail = ex; + } + else if (ex instanceof UNKNOWN) + rex = wrapException(ex.getCause()); + else + rex = new RemoteException(message, ex); + + return rex; } - public Object readAny(InputStream in) + /** + * Converts the exception that was thrown by the implementation method on a + * server side into RemoteException that can be transferred and re-thrown on a + * client side. The method converts exceptions as defined in the following + * table: <table border = "1"> + * <tr> + * <th>Exception to map (or subclass)</th> + * <th>Maps into</th> + * </tr> + * <tr> + * <td>{@link Error}</td> + * <td>{@link ServerError}</td> + * </tr> + * <tr> + * <td>{@link RemoteException}</td> + * <td>{@link ServerException}</td> + * </tr> + * <tr> + * <td>{@link SystemException}</td> + * <td>wrapException({@link #mapSystemException})</td> + * </tr> + * <tr> + * <td>{@link RuntimeException}</td> + * <td><b>rethrows</b></td> + * </tr> + * <tr> + * <td>Any other exception</td> + * <td>{@link UnexpectedException}</td> + * </tr> + * </table> + * + * @param ex an exception that was thrown on a server side implementation. + * + * @return the corresponding RemoteException unless it is a RuntimeException. + * + * @throws RuntimeException the passed exception if it is an instance of + * RuntimeException. + * + * @specnote It is the same behavior, as in Suns implementations 1.4.0-1.5.0. + */ + public RemoteException wrapException(Throwable ex) + throws RuntimeException { - throw new Error("Not implemented for UtilDelegate"); + if (ex instanceof RuntimeException) + throw (RuntimeException) ex; + else if (ex instanceof Error) + return new ServerError(ex.getMessage(), (Error) ex); + else if (ex instanceof RemoteException) + return new ServerException(ex.getMessage(), (Exception) ex); + else if (ex instanceof SystemException) + return wrapException(mapSystemException((SystemException) ex)); + else + return new UnexpectedException("Unexpected", (Exception) ex); } - public void registerTarget(Tie tie, Remote target) + /** + * Write abstract interface to the CORBA output stream. The write format is + * matching CORBA abstract interface. Remotes and CORBA objects are written as + * objects, other classes are supposed to be value types and are written as + * such. {@link Remote}s are processed as defined in + * {@link #writeRemoteObject}. The written data contains discriminator, + * defining, that was written. Another method that writes the same content is + * {@link org.omg.CORBA_2_3.portable.OutputStream#write_abstract_interface(java.lang.Object)}. + * + * @param output a stream to write to, must be + * {@link org.omg.CORBA_2_3.portable.OutputStream}. + * + * @param object an object to write, must be CORBA object, Remote + */ + public void writeAbstractObject(OutputStream output, Object object) { - throw new Error("Not implemented for UtilDelegate"); + ((org.omg.CORBA_2_3.portable.OutputStream) output).write_abstract_interface(object); } - - public void unexportObject(Remote target) + + /** + * Write the passed java object to the output stream in the form of the CORBA + * {@link Any}. This includes creating an writing the object {@link TypeCode} + * first. Such Any can be later read by a non-RMI-IIOP CORBA implementation + * and manipulated, for instance, by means, provided in + * {@link org.omg.DynamicAny.DynAny}. Depending from the passed value, this + * method writes CORBA object, value type or value box. For value types Null + * is written with the abstract interface, its typecode having repository id + * "IDL:omg.org/CORBA/AbstractBase:1.0" and the empty string name. + * + * @param output the object to write. + * @param object the java object that must be written in the form of the CORBA + * {@link Any}. + */ + public void writeAny(OutputStream output, Object object) { - throw new Error("Not implemented for UtilDelegate"); + Any any = output.orb().create_any(); + if (object == null) + { + GeneralTypeCode t = new GeneralTypeCode(TCKind.tk_abstract_interface); + t.setId("IDL:omg.org/CORBA/AbstractBase:1.0"); + t.setName(""); + any.type(t); + output.write_any(any); + return; + } + else if (object instanceof org.omg.CORBA.Object + && !(object instanceof Remote)) + { + // Write as value type. + boolean inserted = ObjectCreator.insertWithHelper(any, object); + if (inserted) + { + output.write_any(any); + return; + } + } + + if (object instanceof org.omg.CORBA.Object) + writeAnyAsRemote(output, object); + else if (object instanceof Serializable) + { + any.insert_Value((Serializable) object); + output.write_any(any); + } + else + { + MARSHAL m = new MARSHAL(object.getClass().getName() + + " must be CORBA Object, Remote or Serializable"); + m.minor = Minor.NonSerializable; + throw m; + } } - - public RemoteException wrapException(Throwable orig) + + /** + * Write Any as for remote object. + */ + void writeAnyAsRemote(OutputStream output, Object object) { - throw new Error("Not implemented for UtilDelegate"); + GeneralTypeCode t = new GeneralTypeCode(TCKind.tk_objref); + t.setId(m_ValueHandler.getRMIRepositoryID(object.getClass())); + t.setName(object.getClass().getName()); + + // Writing Any (typecode, followed by value). + output.write_TypeCode(t); + writeRemoteObject(output, object); } - - public void writeAbstractObject(OutputStream out, Object obj) + + /** + * Get the class name excluding the package name. + */ + String getName(String n) { - throw new Error("Not implemented for UtilDelegate"); + int p = n.lastIndexOf('.'); + if (p < 0) + return n; + else + return n.substring(p + 1); } - - public void writeAny(OutputStream out, Object obj) + + /** + * Read Any from the input stream. + */ + public Object readAny(InputStream input) { - throw new Error("Not implemented for UtilDelegate"); + return input.read_any(); } - public void writeRemoteObject(OutputStream out, Object obj) + /** + * Write the passed parameter to the output stream as CORBA object. If the + * parameter is an instance of Remote and not an instance of Stub, the method + * instantiates a suitable Tie, connects the parameter to this Tie and then + * connects that Tie to the ORB that is requested from the output stream. Then + * the object reference is written to the stream, making remote invocations + * possible. This method is used in write_value(..) method group in + * {@link org.omg.CORBA_2_3.portable.OutputStream} and also may be called + * directly from generated Stubs and Ties. + * + * @param output a stream to write to, must be + * org.omg.CORBA_2_3.portable.OutputStream + * @param object an object to write. + */ + public void writeRemoteObject(OutputStream an_output, Object object) { - throw new Error("Not implemented for UtilDelegate"); + org.omg.CORBA_2_3.portable.OutputStream output = (org.omg.CORBA_2_3.portable.OutputStream) an_output; + if (object == null) + an_output.write_Object(null); + else if (isTieRequired(object)) + { + // Find the interface that is implemented by the object and extends + // Remote. + Class fc = getExportedInterface(object); + exportTie(output, object, fc); + } + else if (object instanceof org.omg.CORBA.Object) + { + ensureOrbRunning(output); + an_output.write_Object((org.omg.CORBA.Object) object); + } + else if (object != null && object instanceof Serializable) + writeFields(an_output, (Serializable) object); } -} + +}
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