MultipartEntity.java

/*
** Module   : MultipartEntity.java
** Abstract : Implementation of the builtin class.
**
** Copyright (c) 2019-2023, Golden Code Development Corporation.
**
** -#- -I- --Date-- ---------------------------------------Description----------------------------------------
** 001 CA  20190526 First version, stubs taken by converting the skeleton using FWD.
** 002 IAS 20190527 Added multipart support.
** 003 CA  20191024 Added method support levels and updated the class support level.
** 004 ME  20200414 Complete implementation as per OE 11.7.4.
**         20201123 Assert positive index on remove (OE 12.2).
** 005 CA  20210221 Fixed 'qualified', 'extent' and 'returns' annotations at the legacy signature.
** 006 ME  20210303 Increment/decrement object references for entity parts.
**     CA  20220120 Do not used TypeFactory.object when the OO reference must not be tracked or registered.
**                  Do not use TypeFactory.object for internal usages, use ObjectVar if the reference must 
**                  be tracked.
**                  All TypeFactory.object variable definitions must be done outside of the top-level block.
**     ME  20210929 Fix return object on getPart.
** 007 CA  20231113 The 'execute' method must be annotated with LegacySignature Type.Execute, and also can be
**                  dropped if is a no-op.
*/

/*
** 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.
** 
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** 
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**     work or Appropriate Legal Notices displayed by works containing the covered
**     work.  You may not remove from the covered work any author or developer
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**   1. No License To Use Trademarks.
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**     This license does not grant any license or rights to use the trademarks
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*/

package com.goldencode.p2j.oo.net;

import com.goldencode.p2j.util.*;
import com.goldencode.p2j.util.BlockManager.Action;
import com.goldencode.p2j.util.BlockManager.Condition;
import com.goldencode.p2j.oo.core.*;
import com.goldencode.p2j.oo.lang.*;

import static com.goldencode.p2j.util.BlockManager.*;
import static com.goldencode.p2j.report.ReportConstants.*;
import static com.goldencode.p2j.util.InternalEntry.Type;

import java.util.*;
import java.util.stream.Collectors;

/**
 * Business logic (converted to Java from the 4GL source code
 * in OpenEdge/Net/MultipartEntity.cls).
 */
@LegacyResource(resource = "OpenEdge.Net.MultipartEntity")
@LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
public class MultipartEntity
extends BaseObject
implements ISupportMultipartEntity
{
   // in OE is possible to add parts unordered and even have gaps between part numbers
   private class OrderedPart {
      int num;
      object<? extends MessagePart> entity;
      
      OrderedPart(int num, object<? extends MessagePart> entity) {
         this.num = num;
         this.entity = entity;
      }
   }
   
   /** Multipart boundary */
   private character boundary = TypeFactory.character();

   /** Epilogue */
   private character epilogue = TypeFactory.character();

   /** Prologue */
   private character prologue = TypeFactory.character();

   /** Parts */
   private List<OrderedPart> parts = new ArrayList<OrderedPart>();

   /**
    * Execute method.
    */
   @LegacySignature(type = Type.EXECUTE)
   public void __net_MultipartEntity_execute__()
   {
      onBlockLevel(Condition.ERROR, Action.THROW);
   }

   /**
    * Get multipart boundary.
    * 
    * @return boundary. 
    */
   @LegacySignature(returns = "CHARACTER", type = Type.GETTER, name = "Boundary")
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   @Override
   public character getBoundary()
   {
      return function(this, "Boundary", character.class, new Block((Body) () -> 
      {
         returnNormal(boundary);
      }));
   }

   /**
    * Set multipart boundary.
    * 
    * @param _var multipart boundary.
    */
   @LegacySignature(type = Type.SETTER, name = "Boundary", parameters = 
   {
      @LegacyParameter(name = "var", type = "CHARACTER", mode = "INPUT")
   })
   @Override
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void setBoundary(final character _var)
   {
      character var = TypeFactory.initInput(_var);
      
      internalProcedure(this, "Boundary", new Block((Body) () -> 
      {
         Assert.notNullOrEmpty(var, new character("Multipart boundary"));
         
         boundary.assign(var);
      }));
   }

   /**
    * Get epilogue.
    * 
    * @return epilogue.
    */
   @LegacySignature(returns = "CHARACTER", type = Type.GETTER, name = "Epilogue")
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public character getEpilogue()
   {
      return function(this, "Epilogue", character.class, new Block((Body) () -> 
      {
         returnNormal(epilogue);
      }));
   }

   /**
    * Set epilogue.
    * 
    * @param _var epilogue.
    */
   @LegacySignature(type = Type.SETTER, name = "Epilogue", parameters = 
   {
      @LegacyParameter(name = "var", type = "CHARACTER", mode = "INPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void setEpilogue(final character _var)
   {
      character var = TypeFactory.initInput(_var);
      
      internalProcedure(this, "Epilogue", new Block((Body) () -> 
      {
         Assert.notNull(var, new character("Multipart epilogue"));
         epilogue.assign(var);
      }));
   }

   /**
    * Get prologue.
    * 
    * @return prologue.
    */
   @LegacySignature(returns = "CHARACTER", type = Type.GETTER, name = "Prologue")
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public character getPrologue()
   {
      return function(this, "Prologue", character.class, new Block((Body) () -> 
      {
         returnNormal(prologue);
      }));
   }

   /**
    * Set prologue.
    * 
    * @param _var prologue.
    */
   @LegacySignature(type = Type.SETTER, name = "Prologue", parameters = 
   {
      @LegacyParameter(name = "var", type = "CHARACTER", mode = "INPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void setPrologue(final character _var)
   {
      character var = TypeFactory.initInput(_var);
      
      internalProcedure(this, "Prologue", new Block((Body) () -> 
      {
         Assert.notNull(var, new character("Multipart prologue"));
         prologue.assign(var);
      }));
   }

   /**
    * Get number of parts.
    * 
    * @return number of parts.
    */
   @LegacySignature(returns = "INTEGER", type = Type.GETTER, name = "Size")
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public integer getSize()
   {
      return function(this, "Size", integer.class, new Block((Body) () -> 
      {
         returnNormal(new integer(parts.size()));
      }));
   }

   /**
    * Constructor.
    */
   @LegacySignature(type = Type.CONSTRUCTOR)
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void __net_MultipartEntity_constructor__()
   {
      internalProcedure(this, "__net_MultipartEntity_constructor__", new Block((Body) () -> 
      {
         __lang_BaseObject_constructor__();
         setBoundary(SecurityOps.convertUniversalUIDToGlobalUID());
      }));
   }
   
   /**
    * Destructor.
    */
   @LegacySignature(type = Type.DESTRUCTOR)
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void __net_MultipartEntity_destructor__()
   {
      internalProcedure(this, "__net_MultipartEntity_destructor__", new Block((Body) () -> 
      {
         clearParts();;
      }));
   }

   /**
    * Add message part.
    * 
    * @param _part message part.
    * 
    * @return number of parts.
    */
   @LegacySignature(returns = "INTEGER", type = Type.METHOD, name = "AddPart", parameters = 
   {
      @LegacyParameter(name = "part", type = "OBJECT", qualified = "openedge.net.messagepart", mode = "INPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public integer addPart(final object<? extends MessagePart> _part)
   {
      object<? extends MessagePart> part = TypeFactory.initInput(_part);
      
      return function(this, "AddPart", integer.class, new Block((Body) () -> 
      {
         integer partNum = new integer(parts.size() + 1);
         
         setPart(partNum, part);
         
         returnNormal(partNum);
      }));
   }

   /**
    * Clear parts.
    */
   @LegacySignature(type = Type.METHOD, name = "ClearParts")
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void clearParts()
   {
      internalProcedure(this, "ClearParts", new Block((Body) () -> {
         this.parts.forEach(p -> ObjectOps.decrement(p.entity));
         this.parts.clear();
      }));
   }

   /**
    * Get parts with given contentId
    * 
    * @param _contentId contentId to be found
    * 
    * @return parts with given contentId
    */
   @LegacySignature(returns = "OBJECT", type = Type.METHOD, name = "GetPart", extent = -1, qualified = "openedg<e.net.messagepart", parameters = {
            @LegacyParameter(name = "contentId", type = "CHARACTER", mode = "INPUT") })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL | RT_LVL_FULL)
   public object<? extends MessagePart>[] getPart(final character _contentId)
   {
      character contentId = TypeFactory.initInput(_contentId);

      return extentFunction(this, "GetPart", object.class, new Block((Body) () ->
      {
         Assert.notNull(contentId, new character("Content ID"));

         List<object<? extends MessagePart>> parts = this.parts.stream().filter(p -> CompareOps.equals(contentId, p.entity.ref().getContentId()))
                  .map(p -> p.entity).collect(Collectors.toList());
         
         if (parts.isEmpty())
            returnExtentNormal(TypeFactory.objectExtent(MessagePart.class, false));
         else
            returnExtentNormal(parts.toArray(new object[parts.size()]));
      }));
   }

   /**
    * Get part by number.
    * 
    * @param _n part number.
    * 
    * @return part no n.
    */
   @LegacySignature(returns = "OBJECT", type = Type.METHOD, name = "GetPart", extent = -1, qualified = "openedge.net.messagepart", parameters = 
   {
      @LegacyParameter(name = "n", type = "INTEGER", mode = "INPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public object<? extends MessagePart> getPart(final integer _n)
   {
      integer n = TypeFactory.initInput(_n);
      object<? extends MessagePart> part = TypeFactory.object(MessagePart.class);
      
      return function(this, "GetPart", object.class, new Block((Body) () -> {
         Assert.isPositive(n, new character("Part num"));
         
         Optional<OrderedPart> opt = parts.stream().filter(p -> p.num == n.intValue()).findFirst();
         
         if (opt.isPresent())
            part.assign(opt.get().entity);
         
         returnNormal(part);
      }));
   }

   /**
    * Remove part by number.
    * 
    * @param _n part number.
    * 
    * @return <code>true</code> if removed.
    */
   @LegacySignature(returns = "LOGICAL", type = Type.METHOD, name = "RemovePart", parameters = {
            @LegacyParameter(name = "n", type = "INTEGER", mode = "INPUT") })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL | RT_LVL_FULL)
   public logical removePart(final integer _n)
   {
      integer n = TypeFactory.initInput(_n);

      return function(this, "RemovePart", logical.class, new Block((Body) () ->
      {
         Assert.isPositive(n, new character("Part num"));
         
         Optional<OrderedPart> found = this.parts.stream().filter(p -> p.num == n.intValue()).findFirst();

         if (found.isPresent())
         {
            OrderedPart part = found.get();
            
            this.parts.remove(part);
            ObjectOps.decrement(part.entity);
            
            // if removed reorder all parts that comes after (the OE way)
            List<OrderedPart> past = this.parts.stream().filter(p -> p.num > n.intValue())
                     .sorted((p1, p2) -> p1.num - p2.num).collect(Collectors.toList());
            int partNum = n.intValue();

            for (OrderedPart p : past)
            {
               p.num = partNum++;
            }
         }

         returnNormal(new logical(found.isPresent()));
      }));
   }

   /**
    * Add a part
    *  
    * @param _p1 The part number being added.
    * @param _p2 The part being added.
    * 
    * @return <code>true</code> if part was replaced.
    */
   @LegacySignature(returns = "LOGICAL", type = Type.METHOD, name = "SetPart", parameters = 
   {
      @LegacyParameter(name = "p1", type = "INTEGER", mode = "INPUT"),
      @LegacyParameter(name = "p2", type = "OBJECT", qualified = "openedge.net.messagepart", mode = "INPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public logical setPart(final integer _p1, final object<? extends MessagePart> _p2)
   {
      integer partNum = TypeFactory.initInput(_p1);
      object<? extends com.goldencode.p2j.oo.net.MessagePart> entity = TypeFactory.initInput(_p2);
      
      return function(this, "SetPart", logical.class, new Block((Body) () -> {
         Assert.isPositive(partNum, new character("Part num"));
         Assert.notNull(entity, new character("Entity"));
         
         ObjectOps.increment(entity);
         
         Optional<OrderedPart> part = parts.stream().filter(p -> p.num == partNum.intValue()).findFirst();
         
         if(part.isPresent()) {
            ObjectOps.decrement(part.get().entity);
            
            part.get().entity = entity;
         } else {
            parts.add(new OrderedPart(partNum.intValue(), entity));
         }
         
         returnNormal(new logical(part.isPresent()));
      }));
   }
}