# Parameter.java

    /*
    ** Module   : Parameter.java
    ** Abstract : Simple key/value configuration parameter
    **
    ** Copyright (c) 2005-2020, Golden Code Development Corporation.
    **
    ** -#- -I- --Date-- -T- --JPRM-- ----------------Description-----------------
    ** 001 ECF 20050120 NEW   @19361 Created initial version.
    ** 002 IAS 20200914 Re-work (de)serialization
    */
    /*
    ** This program is free software: you can redistribute it and/or modify
    ** it under the terms of the GNU Affero General Public License as
    ** published by the Free Software Foundation, either version 3 of the
    ** License, or (at your option) any later version.
    **
    ** This program 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 Affero General Public License for more details.
    **
    ** You may find a copy of the GNU Affero GPL version 3 at the following
    ** location: https://www.gnu.org/licenses/agpl-3.0.en.html
    **
    ** Additional terms under GNU Affero GPL version 3 section 7:
    **
    **   Under Section 7 of the GNU Affero GPL version 3, the following additional
    **   terms apply to the works covered under the License.  These additional terms
    **   are non-permissive additional terms allowed under Section 7 of the GNU
    **   Affero GPL version 3 and may not be removed by you.
    **
    **   0. Attribution Requirement.
    **
    **     You must preserve all legal notices or author attributions in the covered
    **     work or Appropriate Legal Notices displayed by works containing the covered
    **     work.  You may not remove from the covered work any author or developer
    **     credit already included within the covered work.
    **
    **   1. No License To Use Trademarks.
    **
    **     This license does not grant any license or rights to use the trademarks
    **     Golden Code, FWD, any Golden Code or FWD logo, or any other trademarks
    **     of Golden Code Development Corporation. You are not authorized to use the
    **     name Golden Code, FWD, or the names of any author or contributor, for
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    **     the covered work, without written authorization.
    **
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    **
    **     You may not represent the covered work as solely your work.  All modified
    **     versions of the covered work must be marked in a reasonable way to make it
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    **     Corporation or FWD.  All modified versions must contain the notices of
    **     attribution required in this license.
    */

    package com.goldencode.p2j.cfg;

    import static com.goldencode.util.NativeTypeSerializer.*;
    import java.io.*;

    /**
     * A simple parameter object with <code>name</code> and <code>value</code>
     * properties and a bean-like interface to access them. This class is used by
     * the {@link Configuration} to load arbitrary configuration parameters using
     * the Apache digester.
     * <p>
     * Parameter values are always treated as strings and are returned as such
     * from the {@link Configuration#getParameter} method. Callers must further
     * process/parse this data if different types are required.
     */
    public class Parameter
    implements Externalizable
    {
       /** Name which uniquely identifies this parameter within configuration */
       private String name = null;

       /** Value of the parameter */
       private String value = null;

       /**
        * Default constructor.
        */
       public Parameter()
       {
       }

       /**
        * Get name which uniquely identifies this parameter within the
        * configuration.
        *
        * @return  Parameter name.
        */
       public String getName()
       {
          return name;
       }

       /**
        * Set name which uniquely identifies this parameter within the
        * configuration. This generally will only be called by the digester;
        * it is public by necessity so that the digester can access it.
        *
        * @param   name
        *          Parameter name.
        */
       public void setName(String name)
       {
          this.name = name;
       }

       /**
        * Get parameter's value.
        *
        * @return  Parameter value.
        */
       public String getValue()
       {
          return value;
       }

       /**
        * Set this parameter's value. This generally will only be called by the
        * digester; it is public by necessity so that the digester can access it.
        *
        * @param   value
        *          Parameter value as read from configuration document.
        */
       public void setValue(String value)
       {
          this.value = value;
       }

       /**
        * Replacement for the default object writing method.
        *
        * @param    out
        *           The output destination to which fields will be saved.
        *
        * @throws   IOException
        *           In case of I/O errors.
        */
       @Override
       public void writeExternal(ObjectOutput out) throws IOException
       {
          writeString(out, name);
          writeString(out, value);
       }

       /**
        * Replacement for the default object reading method.
        *
        * @param    in
        *           Input source from which fields will be restored.
        *
        * @throws   IOException
        *           In case of I/O errors.
        * @throws   ClassNotFoundException
        *           If payload can't be instantiated.
        */
       @Override
       public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
       {
          name = readString(in);
          value = readString(in);

       }
    }