domain.DomainEntity.java Source code

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Here is the source code for domain.DomainEntity.java

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/* DomainEntity.java
 *
 * Copyright (C) 2014 Universidad de Sevilla
 * 
 * The use of this project is hereby constrained to the conditions of the 
 * TDG Licence, a copy of which you may download from 
 * http://www.tdg-seville.info/License.html
 * 
 */

package domain;

import javax.persistence.Access;
import javax.persistence.AccessType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Inheritance;
import javax.persistence.InheritanceType;
import javax.persistence.Version;

import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonSubTypes.Type;
import com.fasterxml.jackson.annotation.JsonTypeInfo;

@Entity
@Access(AccessType.PROPERTY)
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "type")
@JsonSubTypes({ @Type(value = Survey.class, name = "survey"), @Type(value = Question.class, name = "question") })
public abstract class DomainEntity {

    // Constructors -----------------------------------------------------------

    public DomainEntity() {
        super();
    }

    // Identification ---------------------------------------------------------

    private int id;
    private int version;

    @Id
    @GeneratedValue(strategy = GenerationType.TABLE)
    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    @Version
    public int getVersion() {
        return version;
    }

    public void setVersion(int version) {
        this.version = version;
    }

    // Equality ---------------------------------------------------------------

    @Override
    public int hashCode() {
        return this.getId();
    }

    @Override
    public boolean equals(Object other) {
        boolean result;

        if (this == other)
            result = true;
        else if (other == null)
            result = false;
        else if (other instanceof Integer)
            result = (this.getId() == (Integer) other);
        else if (!this.getClass().isInstance(other))
            result = false;
        else
            result = (this.getId() == ((DomainEntity) other).getId());

        return result;
    }

}