# BaseDataTypeFactory.java

    /*
    ** Module   : BaseDataTypeFactory.java
    ** Abstract : Factory for BaseDataType
    **
    ** Copyright (c) 2023-2025, Golden Code Development Corporation.
    **
    ** -#- -I- --Date-- ----------------------------------Description-----------------------------------
    ** 001 RAA 20230525 Created initial version.
    **     AL2 20230525 Ordered types alphabetically.
    **     AL2 20230525 Moved to CentralLogger.
    ** 002 RAA 20230601 Added check for ObjectVar.
    **     RAA 20230615 Added possibility to instantiate with an initial value.
    ** 003 CA  20240331 Use logical constants for TRUE, FALSE, UNKNOWN, within internal FWD runtime, so logical
    **                  type checks must include sub-classes, too.
    ** 004 CA  20241107 Added character constant support.
    ** 005 ICP 20250123 Added support for integer and int64 constants.
    */

    /*
    ** 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
    **     publicity purposes without written authorization.
    **
    **   2. No Misrepresentation of Affiliation.
    **
    **     You may not represent yourself as Golden Code Development Corporation or FWD.
    **
    **     You may not represent yourself for publicity purposes as associated with
    **     Golden Code Development Corporation, FWD, or any author or contributor to
    **     the covered work, without written authorization.
    **
    **   3. No Misrepresentation of Source or Origin.
    **
    **     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
    **     clear that the modified work is not originating from Golden Code Development
    **     Corporation or FWD.  All modified versions must contain the notices of
    **     attribution required in this license.
    */

    package com.goldencode.p2j.util;

    import java.lang.reflect.InvocationTargetException;

    import com.goldencode.p2j.ui.NoopComHandle;
    import com.goldencode.p2j.util.logging.CentralLogger;

    /**
     * Class responsible with instantiating a data type.
     */
    public class BaseDataTypeFactory
    {
       /** Logger */
       private static final CentralLogger LOG = CentralLogger.get(BaseDataTypeFactory.class);

       /**
        * Create a new instance of the give type, if valid.
        *
        * @param   <T>
        *          The given type.
        * @param   cls
        *          Instance class.
        *
        * @return  An instance with the given type.
        */
       public static <T> T instantiate(Class<T> cls)
       throws InstantiationException,
       IllegalAccessException,
       InvocationTargetException,
       NoSuchMethodException,
       SecurityException
       {
          return instantiate(cls, null);
       }

       /**
        * Create a new instance of the give type, if valid.
        *
        * @param   <T>
        *          The given type.
        * @param   cls
        *          Instance class.
        * @param   newValue
        *          The value to be used for the instance.
        *
        * @return  An instance with the given type.
        */
       public static <T> T instantiate(Class<T> cls, BaseDataType newValue)
       throws InstantiationException,
              IllegalAccessException,
              InvocationTargetException,
              NoSuchMethodException,
              SecurityException
       {
          if (cls == blob.class)
          {
             return newValue == null ? (T) new blob() : (T) new blob(newValue);
          }
          else if (cls == character.class || cls == character.characterConstant.class)
          {
             return newValue == null ? (T) new character() : (T) new character(newValue);
          }
          else if (cls == clob.class)
          {
             return newValue == null ? (T) new clob() : (T) new clob(newValue);
          }
          else if (cls == comhandle.class)
          {
             return newValue == null ? (T) new comhandle() : (T) new comhandle(newValue);
          }
          else if (cls == date.class)
          {
             return newValue == null ? (T) new date() : (T) new date(newValue);
          }
          else if (cls == datetime.class)
          {
             return newValue == null ? (T) new datetime() : (T) new datetime(newValue);
          }
          else if (cls == datetimetz.class)
          {
             return newValue == null ? (T) new datetimetz() : (T) new datetimetz(newValue);
          }
          else if (cls == decimal.class)
          {
             return newValue == null ? (T) new decimal() : (T) new decimal(newValue);
          }
          else if (cls == handle.class)
          {
             return newValue == null ? (T) new handle() : (T) new handle(newValue);
          }
          else if (cls == int64.class || cls == int64.int64Constant.class)
          {
             return newValue == null ? (T) new int64() : (T) new int64(newValue);
          }
          else if (cls == integer.class || cls == integer.integerConstant.class)
          {
             return newValue == null ? (T) new integer() : (T) new integer(newValue);
          }
          else if (cls == jobject.class)
          {
             return newValue == null ? (T) new jobject<>() : (T) new jobject<>(newValue);
          }
          else if (cls == logical.class || cls == logical.logicalConstant.class)
          {
             return newValue == null ? (T) new logical() : (T) new logical(newValue);
          }
          else if (cls == longchar.class)
          {
             return newValue == null ? (T) new longchar() : (T) new longchar(newValue);
          }
          else if (cls == memptr.class)
          {
             return newValue == null ? (T) new memptr() : (T) new memptr(newValue);
          }
          else if (cls == NoopComHandle.class && newValue == null)
          {
             return (T) new NoopComHandle();
          }
          else if (cls == object.class && newValue == null)
          {
             return (T) new object<>();
          }
          else if (cls == ObjectVar.class && newValue == null)
          {
             return (T) new ObjectVar<>();
          }
          else if (cls == raw.class)
          {
             return newValue == null ? (T) new raw() : (T) new raw(newValue);
          }
          else if (cls == recid.class)
          {
             return newValue == null ? (T) new recid() : (T) new recid(newValue);
          }
          else if (cls == rowid.class)
          {
             return newValue == null ? (T) new rowid() : (T) new rowid(newValue);
          }
          else if (cls == unknown.class)
          {
             return (T) unknown.UNKNOWN;
          }

          LOG.warning("Type " + cls + " instantiated via reflection, as it is not registered in BaseDataTypeFactory");
          return newValue == null ? cls.getDeclaredConstructor().newInstance() :
                                    cls.getDeclaredConstructor().newInstance(newValue);
       }
    }