deep-c-rsc/JCGO/classpath-0.93/org/omg/IOP/IORHelper.java

/* IORHelper.java --
   Copyright (C) 2005 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.

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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
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permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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package org.omg.IOP;

import gnu.CORBA.Minor;
import gnu.CORBA.OrbRestricted;

import org.omg.CORBA.Any;
import org.omg.CORBA.BAD_OPERATION;
import org.omg.CORBA.ORB;
import org.omg.CORBA.StructMember;
import org.omg.CORBA.TCKind;
import org.omg.CORBA.TypeCode;
import org.omg.CORBA.portable.InputStream;
import org.omg.CORBA.portable.OutputStream;

/**
* A helper operations for the structure {@link IOR}.
*
* @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
*/
public abstract class IORHelper
{
  /**
   * Create the IOR typecode (structure, named "IOR"). The typecode states that
   * the structure contains the following fields: type_id, profiles.
   */
  public static TypeCode type()
  {
    ORB orb = OrbRestricted.Singleton;
    StructMember[] members = new StructMember[2];

    TypeCode field;

    field = orb.get_primitive_tc(TCKind.tk_string);
    members[0] = new StructMember("type_id", field, null);

    field = orb.create_sequence_tc(0, TaggedProfileHelper.type());
    members[1] = new StructMember("profiles", field, null);
    return orb.create_struct_tc(id(), "IOR", members);
  }

  /**
   * Insert the IOR into the given Any. This method uses the IORHolder.
   * 
   * @param any the Any to insert into.
   * @param that the IOR to insert.
   */
  public static void insert(Any any, IOR that)
  {
    any.insert_Streamable(new IORHolder(that));
  }

  /**
   * Extract the IOR from given Any.
   * This method uses the IORHolder.
   *
   * @throws BAD_OPERATION if the passed Any does not contain IOR.
   */
  public static IOR extract(Any any)
  {
    try
      {
        return ((IORHolder) any.extract_Streamable()).value;
      }
    catch (ClassCastException cex)
      {
        BAD_OPERATION bad = new BAD_OPERATION("IOR expected");
        bad.minor = Minor.Any;        
        bad.initCause(cex);
        throw bad;
      }
  }

  /**
   * Get the IOR repository id.
   *
   * @return "IDL:omg.org/IOP/IOR:1.0", always.
   */
  public static String id()
  {
    return "IDL:omg.org/IOP/IOR:1.0";
  }

  /**
   * Read the structure from the CDR intput stream. Expects repository
   * it, then number of the tagged profiles and then the tagged profiles.
   * Does not expect the endian indicator, present in the beginning of the
   * stringified IOR references.
   *
   * @param input a org.omg.CORBA.portable stream to read from.
   */
  public static IOR read(InputStream input)
  {
    IOR value = new IOR();
    value.type_id = input.read_string();
    value.profiles = new TaggedProfile[ input.read_long() ];
    for (int i0 = 0; i0 < value.profiles.length; i0++)
      value.profiles [ i0 ] = TaggedProfileHelper.read(input);
    return value;
  }

  /**
   * Write the structure to the CDR output stream. Writes
   * Expects repository it, then number of the tagged profiles and then
   * the tagged profiles. Will not write the endian indicator, present
   * in the beginning of the stringified IOR references.
   *
   * @param output a org.omg.CORBA.portable stream stream to write into.
   * @param value a value to write.
   */
  public static void write(OutputStream output, IOR value)
  {
    output.write_string(value.type_id);
    output.write_long(value.profiles.length);
    for (int i0 = 0; i0 < value.profiles.length; i0++)
      TaggedProfileHelper.write(output, value.profiles [ i0 ]);
  }
}