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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 2018 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.
 * You may obtain a copy of the License at
 *
 *     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.builder.conf;

import org.kie.api.conf.OptionKey;

/**
 * A class for the parallel rules build threshold configuration.
 */
public class ParallelRulesBuildThresholdOption implements SingleValueRuleBuilderOption {

    private static final long serialVersionUID = 1L;

    /**
     * The property name for the parallel rules build threshold option
     */
    public static final String PROPERTY_NAME = "drools.parallelRulesBuildThreshold";

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

    private int parallelRulesBuildThreshold;

    /**
     * Private constructor to enforce the use of the factory method
     *
     * @param key
     */
    private ParallelRulesBuildThresholdOption(final int parallelRulesBuildThreshold) {
        this.parallelRulesBuildThreshold = parallelRulesBuildThreshold;
    }

    /**
     * This is a factory method for this ParallelRulesBuildThresholdOption configuration. The factory method is a best practice for the case
     * where the actual object construction is changed in the future.
     *
     * @param vale
     *            the value of the parallel rules build threshold to be configured
     *
     * @return the actual type safe parallel rules build threshold configuration.
     */
    public static ParallelRulesBuildThresholdOption get(final int parallelRulesBuildThreshold) {
        return new ParallelRulesBuildThresholdOption(parallelRulesBuildThreshold);
    }

    @Override
    public String getPropertyName() {
        return PROPERTY_NAME;
    }

    public int getParallelRulesBuildThreshold() {
        return parallelRulesBuildThreshold;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + parallelRulesBuildThreshold;
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        ParallelRulesBuildThresholdOption other = (ParallelRulesBuildThresholdOption) obj;
        if (parallelRulesBuildThreshold != other.parallelRulesBuildThreshold) {
            return false;
        }
        return true;
    }

}