LightJason - AgentSpeak(L++)
CConcat.java
Go to the documentation of this file.
1 /*
2  * @cond LICENSE
3  * ######################################################################################
4  * # LGPL License #
5  * # #
6  * # This file is part of the LightJason AgentSpeak(L++) #
7  * # Copyright (c) 2015-19, LightJason (info@lightjason.org) #
8  * # This program is free software: you can redistribute it and/or modify #
9  * # it under the terms of the GNU Lesser General Public License as #
10  * # published by the Free Software Foundation, either version 3 of the #
11  * # License, or (at your option) any later version. #
12  * # #
13  * # This program is distributed in the hope that it will be useful, #
14  * # but WITHOUT ANY WARRANTY; without even the implied warranty of #
15  * # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
16  * # GNU Lesser General Public License for more details. #
17  * # #
18  * # You should have received a copy of the GNU Lesser General Public License #
19  * # along with this program. If not, see http://www.gnu.org/licenses/ #
20  * ######################################################################################
21  * @endcond
22  */
23 
24 package org.lightjason.agentspeak.action.builtin.string;
25 
33 
34 import javax.annotation.Nonnegative;
35 import javax.annotation.Nonnull;
36 import java.util.List;
37 import java.util.Objects;
38 import java.util.stream.Collectors;
39 
40 
48 public final class CConcat extends IBuiltinAction
49 {
53  private static final long serialVersionUID = 4688132740901866985L;
54 
55  @Nonnegative
56  @Override
57  public final int minimalArgumentNumber()
58  {
59  return 2;
60  }
61 
62  @Nonnull
63  @Override
64  public final IFuzzyValue<Boolean> execute( final boolean p_parallel, @Nonnull final IContext p_context,
65  @Nonnull final List<ITerm> p_argument, @Nonnull final List<ITerm> p_return )
66  {
67  p_return.add( CRawTerm.from(
68  CCommon.flatten( p_argument )
69  .filter( i -> Objects.nonNull( i.raw() ) )
70  .map( i -> i.raw().toString() )
71  .collect( Collectors.joining() )
72  ) );
73  return CFuzzyValue.from( true );
74  }
75 
76 }
base class of build-in actions for setting name by package/classname (without prefix character) ...
static< N > IFuzzyValue< N > from( @Nonnull final N p_value)
factory
common structure for execution definition
action to concat / join all strings.
Definition: CConcat.java:48
final IFuzzyValue< Boolean > execute(final boolean p_parallel, @Nonnull final IContext p_context, @Nonnull final List< ITerm > p_argument, @Nonnull final List< ITerm > p_return)
defines a plan-body operation
Definition: CConcat.java:64
final int minimalArgumentNumber()
minimum number of arguments
Definition: CConcat.java:57
execution context with local data
Definition: IContext.java:42
static Stream< ITerm > flatten( @Nonnull final Collection<? extends ITerm > p_terms)
flat term-in-term collection into a straight term list
result for an immutable fuzzy value
static< N > CRawTerm< N > from(final N p_value)
factory for a raw term
Definition: CRawTerm.java:104
term structure for simple datatypes
Definition: CRawTerm.java:45