HttpHeaderCollection.java

/*
** Module   : HttpHeaderCollection.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 CA  20191024 Added method support levels and updated the class support level.
** 003 MP  20200611 Added missing methods as stubs taken by converting the skeleton using FWD.
** 004 ME  20200928 Clean-up private methods.
** 005 CA  20210113 Renamed clear() to clear_(), to follow NameConverter's rules.
** 006 CA  20210221 Fixed 'qualified', 'extent' and 'returns' annotations at the legacy
**                  signature.
** 007 ME  20210329 Increment/decrement object references on add/remove.
**     CA  20210609 Updated INPUT/INPUT-OUTPUT parameters to the new approach, where they are explicitly 
**                  initialized at the method's execution, and not at the caller's arguments.
** 008 CA  20230313 Fixed 'getAll', the OUTPUT extent array must use update the object reference and not 
**                  assign the object directly to the array, otherwise the object reference counting will 
**                  decrement the reference. 
** 009 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.
** 
**   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.
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**     You may not represent yourself as Golden Code Development Corporation or FWD.
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**     Golden Code Development Corporation, FWD, or any author or contributor to
**     the covered work, without written authorization.
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**     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.oo.net.http;

import static com.goldencode.p2j.util.BlockManager.externalProcedure;
import static com.goldencode.p2j.report.ReportConstants.*;
import static com.goldencode.p2j.util.BlockManager.function;
import static com.goldencode.p2j.util.BlockManager.internalProcedure;
import static com.goldencode.p2j.util.BlockManager.onBlockLevel;
import static com.goldencode.p2j.util.BlockManager.returnNormal;
import java.util.*;

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


/**
 * Business logic (converted to Java from the 4GL source code
 * in OpenEdge/Net/HTTP/HttpHeaderCollection.cls).
 */
@LegacyResource(resource = "OpenEdge.Net.HTTP.HttpHeaderCollection")
@LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
public class HttpHeaderCollection
extends BaseObject
{
   /** Header by name map */
   protected final Map<character, object<? extends HttpHeader>> headers = new TreeMap<character, object<? extends HttpHeader>>(character.CASE_INSENSITIVE_ORDER);
   
   /**
    * Execute method.
    */
   @LegacySignature(type = Type.EXECUTE)
   public void __net_http_HttpHeaderCollection_execute__()
   {
      onBlockLevel(Condition.ERROR, Action.THROW);
   }

   /**
    * Constructor.
    */
   @LegacySignature(type = Type.CONSTRUCTOR)
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void __net_http_HttpHeaderCollection_constructor__()
   {
      internalProcedure(this, "__net_http_HttpHeaderCollection_constructor__", new Block((Body) () -> 
      {
         __lang_BaseObject_constructor__();
      }));
   }
   
   
   @LegacySignature(returns = "INTEGER", type = Type.GETTER, name = "Size")
   public integer getSize()
   {
      return function(HttpHeaderCollection.class, this, "Size", integer.class, new Block((Body) () -> 
      {
         returnNormal(new integer(this.headers.size()));
      }));
   }

   /**
    *  Removes all headers from this message.
    */
   @LegacySignature(type = Type.METHOD, name = "Clear")
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void clear_()
   {
      internalProcedure(this, "Clear", new Block((Body) () -> 
      {
         headers.values().forEach(h -> {
            if (h!=null && h._isValid())
               ObjectOps.decrement(h.ref());
         });
         headers.clear();
      }));
   }


   /**
    * Returns a named header.
    * 
    * @param _p1 The name of the header to retrieve.
    * 
    * @return The header object. Returns a NullHeader if none exists.
    */
   @LegacySignature(returns = "OBJECT", type = Type.METHOD, name = "Get", qualified = "openedge.net.http.httpheader", parameters = 
   {
      @LegacyParameter(name = "p1", type = "CHARACTER", mode = "INPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public object<? extends HttpHeader> get(final character _p1)
   {
      character p1 = TypeFactory.initInput(_p1);
      
      return function(this, "Get", object.class, new Block((Body) () -> 
      {
         Assert.notNullOrEmpty(p1, new character("Header name"));
         returnNormal(
               headers.getOrDefault(p1, HttpHeader.getNullHeader())
         );
      }));
   }

   /**
    * Returns all the headers (Names and values).
    * 
    * @param _p1 An array of headers.
    * 
    * @return The number of headers returned.
    */
   @LegacySignature(returns = "INTEGER", type = Type.METHOD, name = "GetAll", parameters = 
   {
      @LegacyParameter(name = "p1", type = "OBJECT", extent = -1, 
            qualified = "openedge.net.http.httpheader", mode = "OUTPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public integer getAll(final OutputExtentParameter<object<? extends HttpHeader>> _p1)
   {
      object[] p1 = TypeFactory.initOutput(_p1, this.headers.size());
      
      return function(this, "GetAll", integer.class, new Block((Body) () -> 
      {
         int i = 0;
         
         // sorted by header name (probably temp-table index)
         for (object<? extends HttpHeader> h: headers.values())
         {
            p1[i++].assign(h);
         }
         
         returnNormal(new integer(p1.length));
      }));
   }

   /**
    * Indicates whether a header exists for this message or not.
    *  
    * @param _p1 The name of a header to check.
    * 
    * @return <code>true</code> if this message contains the header
    */
   @LegacySignature(returns = "LOGICAL", type = Type.METHOD, name = "Has", parameters = 
   {
      @LegacyParameter(name = "p1", type = "CHARACTER", mode = "INPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public logical has(final character _p1)
   {
      character p1 = TypeFactory.initInput(_p1);
      
      return function(this, "Has", logical.class, new Block((Body) () -> 
      {
         Assert.notNullOrEmpty(p1, new character("Header name"));
         returnNormal(new logical(headers.containsKey(p1)));
      }));
   }

   /**
    * Adds a header to this collection. 
    * 
    * @param _p1  The header.
    */
   @LegacySignature(type = Type.METHOD, name = "Put", parameters = 
   {
      @LegacyParameter(name = "p1", type = "OBJECT", qualified = "openedge.net.http.httpheader", mode = "INPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void put(final object<? extends com.goldencode.p2j.oo.net.http.HttpHeader> _p1)
   {
      object<? extends HttpHeader> p1 = TypeFactory.initInput(_p1);
      
      internalProcedure(this, "Put", new Block((Body) () -> 
      {
         Assert.notNull(p1, new character("Http Header"));
         if (!ObjectOps.typeOf(p1, NullHeader.class).booleanValue())
         {
            object<? extends HttpHeader> old = headers.put(p1.ref().getName(), p1);
            ObjectOps.increment(p1.ref());
            
            if (old != null && old._isValid())
               ObjectOps.decrement(old.ref());
         }
      }));
   }

   /**
    * Adds a set of headers to this collection. Overwrites any existing headers that appear in 
    * this (the target) collection.
    *  
    * @param _p1 The headers.
    */
   @LegacySignature(type = Type.METHOD, name = "Put", parameters = 
   {
      @LegacyParameter(name = "p1", type = "OBJECT", extent = -1, 
            qualified = "openedge.net.http.httpheader", mode = "INPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void put(final object<? extends HttpHeader>[] _p1)
   {
      object<? extends HttpHeader>[] p1 = TypeFactory.initInput(_p1);
      
      internalProcedure(this, "Put", new Block((Body) () -> 
      {
         Arrays.stream(p1).forEach(this::put);
      }));
   }

   /**
    * Adds a set of headers to this collection. Overwrites any existing headers that appear in 
    * this (the target) collection.
    * 
    * @param _p1 The header collection.
    */
   @LegacySignature(type = Type.METHOD, name = "Put", parameters = 
   {
      @LegacyParameter(name = "p1", type = "OBJECT", 
            qualified = "openedge.net.http.httpheadercollection", mode = "INPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void put_1(final object<? extends HttpHeaderCollection> _p1)
   {
      object<? extends HttpHeaderCollection> p1 = TypeFactory.initInput(_p1);
      
      internalProcedure(this, "Put", new Block((Body) () -> 
      {
         Assert.notNull(p1, new character("Header collection"));
         p1.ref().headers.values().forEach(this::put);
      }));
   }

   /**
    * Removes a header from the collection of message headers. No-op if none exists.
    * 
    * @param _p1 The name of the header to remove.
    */
   @LegacySignature(type = Type.METHOD, name = "Remove", parameters = 
   {
      @LegacyParameter(name = "p1", type = "CHARACTER", mode = "INPUT")
   })
   @LegacyResourceSupport(supportLvl = CVT_LVL_FULL|RT_LVL_FULL)
   public void remove(final character _p1)
   {
      character p1 = TypeFactory.initInput(_p1);
      
      internalProcedure(this, "Remove", new Block((Body) () -> 
      {
         Assert.notNullOrEmpty(p1, new character("Header name"));
         object<? extends HttpHeader> old = headers.remove(p1);
         if (old != null && old._isValid())
            ObjectOps.decrement(old.ref());
      }));
   }

}