de.knightsoftnet.gwtp.spring.shared.data.jpa.domain.AbstractPersistable Maven / Gradle / Ivy
package de.knightsoftnet.gwtp.spring.shared.data.jpa.domain;
import org.springframework.data.domain.Persistable;
import org.springframework.lang.Nullable;
import java.io.Serializable;
import java.util.Objects;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.Id;
import jakarta.persistence.MappedSuperclass;
import jakarta.persistence.Transient;
/**
* Abstract base class for entities. Allows parameterization of id type, chooses auto-generation and
* implements {@link #equals(Object)} and {@link #hashCode()} based on that id. Based on
* {@link org.springframework.data.jpa.domain.AbstractPersistable} but with public setter for id,
* it's required on editor and serializer on client side.
*
* @author Oliver Gierke
* @author Thomas Darimont
* @author Mark Paluch
* @author Manfred Tremmel
* @param the type of the identifier.
*/
@MappedSuperclass
public abstract class AbstractPersistable
implements Persistable
{
@Id
@GeneratedValue
private @Nullable P id;
/*
* (non-Javadoc)
*
* @see org.springframework.data.domain.Persistable#getId()
*/
@Nullable
@Override
public P getId() {
return id;
}
/**
* Sets the id of the entity.
*
* @param id the id to set
*/
public void setId(@Nullable final P id) {
this.id = id;
}
/**
* Must be {@link Transient} in order to ensure that no JPA provider complains because of a
* missing setter.
*
* @see org.springframework.data.domain.Persistable#isNew()
*/
@Transient // DATAJPA-622
@Override
public boolean isNew() {
return null == getId();
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "Entity of type " + this.getClass().getName() + " with id: " + getId();
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(final Object obj) {
if (null == obj) {
return false;
}
if (this == obj) {
return true;
}
if (getClass() != obj.getClass()) {
return false;
}
final AbstractPersistable that = (AbstractPersistable) obj;
return Objects.equals(this.getId(), that.getId());
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return Objects.hashCode(getId());
}
}