CClearBeliefbase.java

/*
 * @cond LICENSE
 * ######################################################################################
 * # LGPL License                                                                       #
 * #                                                                                    #
 * # This file is part of the LightJason AgentSpeak(L++)                                #
 * # Copyright (c) 2015-19, LightJason (info@lightjason.org)                            #
 * # This program is free software: you can redistribute it and/or modify               #
 * # it under the terms of the GNU Lesser 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,                    #
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 * # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                      #
 * # GNU Lesser General Public License for more details.                                #
 * #                                                                                    #
 * # You should have received a copy of the GNU Lesser General Public License           #
 * # along with this program. If not, see http://www.gnu.org/licenses/                  #
 * ######################################################################################
 * @endcond
 */

package org.lightjason.agentspeak.action.builtin.agent;

import org.lightjason.agentspeak.action.builtin.IBuiltinAction;
import org.lightjason.agentspeak.common.CPath;
import org.lightjason.agentspeak.common.IPath;
import org.lightjason.agentspeak.language.CCommon;
import org.lightjason.agentspeak.language.ITerm;
import org.lightjason.agentspeak.language.execution.IContext;
import org.lightjason.agentspeak.language.fuzzy.CFuzzyValue;
import org.lightjason.agentspeak.language.fuzzy.IFuzzyValue;

import javax.annotation.Nonnull;
import java.util.List;


/**
 * clears all elements from the beliefbase.
 * The action clear th beliefbase, the arguments
 * are optional and can be string paths to beliefbases
 *
 * {@code agent/clearbeliefbase( "env", "foo" );}
 */
public final class CClearBeliefbase extends IBuiltinAction
{
    /**
     * serial id
     */
    private static final long serialVersionUID = 5832369527494082158L;

    @Nonnull
    @Override
    public 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
    )
    {
        p_context.agent()
                 .beliefbase()
                 .clear(
                    p_argument.size() == 0
                    ? null
                    : CCommon.flatten( p_argument )
                             .parallel()
                             .map( i -> CPath.from( i.raw() ) )
                             .toArray( IPath[]::new ) );

        return CFuzzyValue.from( true );
    }

}