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Utilties for working with boolean expression operations

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/*
 * Copyright (C) 2019 The Calrissian Authors
 *
 * 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.calrissian.mango.criteria.domain;

import org.calrissian.mango.criteria.visitor.NodeVisitor;

import java.io.Serializable;
import java.util.List;

/**
 * A node represents a query tree. That is, a tree that can be traversed and optimizations made. This tree supports
 * pluggable algorithms via the visitor pattern. These algorithms can be used for introspecting state or modifying
 * the tree.
 */
public interface Node extends Serializable, Cloneable {

    ParentNode parent();

    List children();

    void addChild(Node node);

    void removeChild(Node node);

    void accept(NodeVisitor visitor);

    Node clone(ParentNode node);

}