sources/shared/remotecall/RemoteCall.java


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package shared.remotecall;

import java.io.*;

/**
 * This is the abstract base class of all other classes of the shared.remotecall package.
 * Its defining some common methods.
 * @author buetow
 *
 */
public abstract class RemoteCall {
  /**
   * This is a help method for writeObject of the child classes, needed for ojbect serialization (sending part).
   * It checks if object is defined. If yes, it will be written to the given object output stream with a leading
   * flag with the value true. Otherwise only the false flag will be written to the object output stream.
   * @param objectOutputStream Specifies the output stream.
   * @throws IOException
   */
  protected final void writeObjectIfDefined(ObjectOutputStream objectOutputStream, Object object)
  throws IOException {
    if (object == null) {
      objectOutputStream.writeBoolean(false);

    } else {
      objectOutputStream.writeBoolean(true);
      objectOutputStream.writeObject(object);
    }
  }
}