AbstractSimpleIdentity.java
package dev.orne.beans;
/*-
* #%L
* Orne Beans
* %%
* Copyright (C) 2020 Orne Developments
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser 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 Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/lgpl-3.0.html>.
* #L%
*/
import java.io.Serializable;
import javax.validation.constraints.NotNull;
import org.apache.commons.lang3.Validate;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apiguardian.api.API;
import org.apiguardian.api.API.Status;
/**
* Abstract implementation for {@code Identity} for identities composed
* of a single inner value.
*
* @author <a href="mailto:wamphiry@orne.dev">(w) Iker Hernaez</a>
* @version 1.0, 2020-05
* @since 0.1
* @param <T> The type of the identity value
*/
@API(status=Status.STABLE, since="0.1")
public abstract class AbstractSimpleIdentity<T extends Serializable>
extends AbstractIdentity {
/** The serial version UID. */
private static final long serialVersionUID = -4740745453560262909L;
/** The identity inner value. */
private final T value;
/**
* Creates a new instance.
*
* @param value The identity value
*/
protected AbstractSimpleIdentity(
final T value) {
super();
this.value = value;
}
/**
* Copy constructor.
*
* @param copy The instance to copy
*/
protected AbstractSimpleIdentity(
final @NotNull AbstractSimpleIdentity<T> copy) {
super();
Validate.notNull(copy, "Template instance is required");
this.value = copy.value;
}
/**
* Returns the identity inner value.
*
* @return The identity inner value
*/
public T getValue() {
return this.value;
}
/**
* {@inheritDoc}
*/
@Override
protected String getIdentityTokenBody() {
return this.value == null ? null : this.value.toString();
}
/**
* {@inheritDoc}
*/
@Override
public int hashCode() {
return new HashCodeBuilder()
.appendSuper(super.hashCode())
.append(this.value)
.build();
}
/**
* {@inheritDoc}
*/
@Override
public boolean equals(final Object obj) {
if (obj == null) { return false; }
if (obj == this) { return true; }
if (obj.getClass() != getClass()) { return false; }
final AbstractSimpleIdentity<?> other = (AbstractSimpleIdentity<?>) obj;
return new EqualsBuilder()
.appendSuper(super.equals(obj))
.append(this.value, other.value)
.build();
}
}