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package org.hibernate.examples.model;

import lombok.Getter;
import lombok.Setter;
import org.hibernate.examples.utils.HashTool;
import org.hibernate.examples.utils.ToStringHelper;

import javax.persistence.Column;
import javax.persistence.Embeddable;

/**
 * 계층형 구조 엔티티의 TREE 상에서의 위치를 나타냅니다.
 *
 * @author 배성혁 [email protected]
 * @since 2013. 11. 27. 오후 4:30
 */
@Embeddable
@Getter
@Setter
public class TreeNodePosition extends AbstractValueObject {

    @Column(name = "treeLevel")
    private Integer level;

    @Column(name = "treeOrder")
    private Integer order;

    public TreeNodePosition() {this(0, 0); }

    public TreeNodePosition(int level, int order) {
        this.level = level;
        this.order = order;
    }

    public TreeNodePosition(TreeNodePosition src) {
        this(src.level, src.order);
    }

    public void setPosition(int level, int order) {
        this.level = level;
        this.order = order;
    }

    @Override
    public int hashCode() {
        return HashTool.compute(level, order);
    }

    @Override
    public ToStringHelper buildStringHelper() {
        return super.buildStringHelper()
                    .add("level", level)
                    .add("order", order);
    }

    private static final long serialVersionUID = -5552929284039433528L;
}