Java Code Examples for javax.persistence.Column#nullable()

@Override
public void parse(Context context) {
	if (context.getValue() != null) {
		MappingRule mappingRule =context.getCurrentMappingRule();
		BeanMap beanMap = BeanMap.create(context.getCurrentEntity());
		if (context.getValue() != Constants.IGNORE_ERROR_FORMAT_DATA) {
			Field field = ReflectionUtils.findField(context.getEntityClass(), mappingRule.getPropertyName());
			Column column = field.getAnnotation(Column.class);
			if (column.nullable()) {
				if (context.getValue() == null) {
					throw new DataNullableException(context.getCurrentCell().getRow(), context.getCurrentCell().getCol());
				}
			}
			
			if (field.getType() == String.class && !field.isAnnotationPresent(Lob.class)) {
				String value = (String) context.getValue();
				if (value.getBytes().length > column.length()) {
					throw new DataLengthException(context.getCurrentCell().getRow(), context.getCurrentCell().getCol(), value, column.length());
				}
			}
			beanMap.put(mappingRule.getPropertyName(), context.getValue());
		}
	}
}
 

private boolean isNullable() {
	if (isId()) {
		return false;
	}
	Column col = this.accessible.getAnnotation(Column.class);
	return col == null || col.nullable();
}
 

@Override
protected void initAttribute(MetaAttribute attr) {
	ManyToMany manyManyAnnotation = attr.getAnnotation(ManyToMany.class);
	ManyToOne manyOneAnnotation = attr.getAnnotation(ManyToOne.class);
	OneToMany oneManyAnnotation = attr.getAnnotation(OneToMany.class);
	OneToOne oneOneAnnotation = attr.getAnnotation(OneToOne.class);
	Version versionAnnotation = attr.getAnnotation(Version.class);
	Lob lobAnnotation = attr.getAnnotation(Lob.class);
	Column columnAnnotation = attr.getAnnotation(Column.class);

	boolean idAttr = attr.getAnnotation(Id.class) != null || attr.getAnnotation(EmbeddedId.class) != null;
	boolean attrGenerated = attr.getAnnotation(GeneratedValue.class) != null;

	attr.setVersion(versionAnnotation != null);
	attr.setAssociation(
			manyManyAnnotation != null || manyOneAnnotation != null || oneManyAnnotation != null || oneOneAnnotation !=
					null);

	attr.setLazy(isJpaLazy(attr.getAnnotations(), attr.isAssociation()));
	attr.setLob(lobAnnotation != null);
	attr.setFilterable(lobAnnotation == null);
	attr.setSortable(lobAnnotation == null);

	attr.setCascaded(getCascade(manyManyAnnotation, manyOneAnnotation, oneManyAnnotation, oneOneAnnotation));

	if (attr.getReadMethod() == null) {
		throw new IllegalStateException("no getter found for " + attr.getParent().getName() + "." + attr.getName());
	}
	Class<?> attributeType = attr.getReadMethod().getReturnType();
	boolean isPrimitiveType = ClassUtils.isPrimitiveType(attributeType);
	boolean columnNullable = (columnAnnotation == null || columnAnnotation.nullable()) &&
			(manyOneAnnotation == null || manyOneAnnotation.optional()) &&
			(oneOneAnnotation == null || oneOneAnnotation.optional());
	attr.setNullable(!isPrimitiveType && columnNullable);

	boolean hasSetter = attr.getWriteMethod() != null;
	attr.setInsertable(hasSetter && (columnAnnotation == null || columnAnnotation.insertable()) && !attrGenerated
			&& versionAnnotation == null);
	attr.setUpdatable(
			hasSetter && (columnAnnotation == null || columnAnnotation.updatable()) && !idAttr && versionAnnotation == null);

}
 

protected void initializeChecks(final Column annotation, final Collection<Check> checks, final AccessibleObject fieldOrMethod) {
   /* If the value is generated (annotated with @GeneratedValue) it is allowed to be null
    * before the entity has been persisted, same is true in case of optimistic locking
    * when a field is annotated with @Version.
    * Therefore and because of the fact that there is no generic way to determine if an entity
    * has been persisted already, a not-null check will not be performed for such fields.
    */
   if (!annotation.nullable() //
      && !fieldOrMethod.isAnnotationPresent(GeneratedValue.class) //
      && !fieldOrMethod.isAnnotationPresent(Version.class) //
      && !fieldOrMethod.isAnnotationPresent(NotNull.class) //
      && !containsCheckOfType(checks, NotNullCheck.class) //
   ) {
      checks.add(new NotNullCheck());
   }

   // add Length check based on Column.length parameter, but only:
   if (!fieldOrMethod.isAnnotationPresent(Lob.class) && // if @Lob is not present
      !fieldOrMethod.isAnnotationPresent(Enumerated.class) && // if @Enumerated is not present
      !fieldOrMethod.isAnnotationPresent(Length.class) // if an explicit @Length constraint is not present
   ) {
      final LengthCheck lengthCheck = new LengthCheck();
      lengthCheck.setMax(annotation.length());
      checks.add(lengthCheck);
   }

   // add Range check based on Column.precision/scale parameters, but only:
   if (!fieldOrMethod.isAnnotationPresent(Range.class) // if an explicit @Range is not present
      && annotation.precision() > 0 // if precision is > 0
      && Number.class.isAssignableFrom(fieldOrMethod instanceof Field //
         ? ((Field) fieldOrMethod).getType() //
         : ((Method) fieldOrMethod).getReturnType()) // if numeric field type
   ) {
      /* precision = 6, scale = 2  => -9999.99<=x<=9999.99
       * precision = 4, scale = 1  =>   -999.9<=x<=999.9
       */
      final RangeCheck rangeCheck = new RangeCheck();
      rangeCheck.setMax(Math.pow(10, annotation.precision() - annotation.scale()) - Math.pow(0.1, annotation.scale()));
      rangeCheck.setMin(-1 * rangeCheck.getMax());
      checks.add(rangeCheck);
   }
}