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General-Purpose Library of Neo4j-Related Code

There is a newer version: 4.2.0.58

/*
 * Copyright (c) 2013-2016 GraphAware
 *
 * This file is part of the GraphAware Framework.
 *
 * GraphAware Framework is free software: you can redistribute it and/or modify it under the terms of
 * the GNU 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 General Public License for more details. You should have received a copy of
 * the GNU General Public License along with this program.  If not, see
 * .
 */

package com.graphaware.common.policy.composite;

import com.graphaware.common.policy.BasePropertyContainerInclusionPolicy;
import com.graphaware.common.policy.PropertyContainerInclusionPolicy;
import org.neo4j.graphdb.PropertyContainer;

import java.util.Arrays;

/**
 * {@link com.graphaware.common.policy.PropertyContainerInclusionPolicy} composed of multiple other policies.
 * All contained policies must "vote" true to {@link #include(org.neo4j.graphdb.PropertyContainer)} in
 * order for this policy to return true.
 */
public abstract class CompositePropertyContainerInclusionPolicy> extends BasePropertyContainerInclusionPolicy
 implements PropertyContainerInclusionPolicy {

    protected final T[] policies;

    protected CompositePropertyContainerInclusionPolicy(T[] policies) {
        if (policies == null || policies.length < 1) {
            throw new IllegalArgumentException("There must be at least one wrapped policy in composite policy");
        }
        this.policies = policies;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean include(P object) {
        for (T policy : policies) {
            if (!policy.include(object)) {
                return false;
            }
        }

        return true;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        CompositePropertyContainerInclusionPolicy that = (CompositePropertyContainerInclusionPolicy) o;

        if (!Arrays.equals(policies, that.policies)) return false;

        return true;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public int hashCode() {
        return Arrays.hashCode(policies);
    }
}