How to use

getVersion

method

in

org.grails.datastore.mapping.model.PersistentEntity

protected void setVersion(final EntityAccess ea) {
  final Class versionType = ea.getPersistentEntity().getVersion().getType();
  if (Number.class.isAssignableFrom(versionType)) {
    ea.setProperty(GormProperties.VERSION, 0);
  }
  else if (Timestamp.class.isAssignableFrom(versionType)) {
    ea.setProperty(GormProperties.VERSION, new Timestamp(System.currentTimeMillis()));
  }
  else if (Date.class.isAssignableFrom(versionType)) {
    ea.setProperty(GormProperties.VERSION, new Date());
  }
}

protected boolean canApplyNullableConstraint(String propertyName, PersistentProperty property, Constrained constrained) {
  if (property == null || property.getType() == null) return false;
  final PersistentEntity domainClass = property.getOwner();
  // only apply default nullable to Groovy entities not legacy Java ones
  if (!GroovyObject.class.isAssignableFrom(domainClass.getJavaClass())) return false;
  final PersistentProperty versionProperty = domainClass.getVersion();
  final boolean isVersion = versionProperty != null && versionProperty.equals(property);
  return !constrained.hasAppliedConstraint(ConstrainedProperty.NULLABLE_CONSTRAINT) &&
      isConstrainableProperty(property, propertyName) && !isVersion;
}

protected void setDateVersion(final EntityAccess ea) {
  setDateVersionInternal(ea.getPersistentEntity().getVersion().getName(), ea);
}

public static void incrementEntityVersion(EntityAccess ea) {
  final String versionName = ea.getPersistentEntity().getVersion().getName();
  if (Number.class.isAssignableFrom(ea.getPropertyType(versionName))) {
    Number currentVersion = (Number) ea.getProperty(versionName);
    if (currentVersion == null) {
      currentVersion = 0L;
    }
    ea.setProperty(versionName, currentVersion.longValue() + 1);
  }
  else {
    setDateVersionInternal(versionName, ea);
  }
}

protected void setVersion(final EntityAccess ea) {
  final String versionName = ea.getPersistentEntity().getVersion().getName();
  if (Number.class.isAssignableFrom(ea.getPropertyType(versionName))) {
    ea.setProperty(versionName, 0);
  }
  else {
    setDateVersion(ea);
  }
}

PersistentProperty version = entity.getVersion();
if (canPropertyBeConstrained(p) && !p.equals(version)) {
  if (mappedForm.isDerived()) {