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The Drools and jBPM internal API which is NOT backwards compatible between releases.

There is a newer version: 9.44.0.Final

/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.kie.internal.runtime.conf;

import org.kie.api.conf.OptionKey;
import org.kie.api.definition.rule.Rule;
import org.kie.api.runtime.conf.DirectFiringOption;
import org.kie.api.runtime.conf.SingleValueRuleRuntimeOption;

/**
 * Option to force evaluation and then activation of rules annotated with @Eager.
 */
public class ForceEagerActivationOption implements SingleValueRuleRuntimeOption {

    private static final long serialVersionUID = 510l;

    public static final String PROPERTY_NAME = "drools.forceEagerActivation";

    public static OptionKey KEY = new OptionKey<>(TYPE, PROPERTY_NAME);

    public static final ForceEagerActivationOption YES = new ForceEagerActivationOption(new ForceEagerActivationFilter() {
        @Override
        public boolean accept(Rule rule) {
            return true;
        }
    });

    public static final ForceEagerActivationOption NO = new ForceEagerActivationOption(new ForceEagerActivationFilter() {
        @Override
        public boolean accept(Rule rule) {
            return false;
        }
    });

    private final ForceEagerActivationFilter filter;

    private ForceEagerActivationOption( final ForceEagerActivationFilter filter ) {
        this.filter = filter;
    }

    public String getPropertyName() {
        return PROPERTY_NAME;
    }

    public ForceEagerActivationFilter getFilter() {
        return filter;
    }

    public static class FILTERED extends ForceEagerActivationOption {
        public FILTERED(ForceEagerActivationFilter filter) {
            super(filter);
        }
    }

    public static ForceEagerActivationOption resolve(String value) {
        return Boolean.valueOf( value ) ? YES : NO;
    }
}