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When modelling an association between classes then inside the UML model already its multiplicity will be defined. If the multiplicity is 0..* or 1..* then in the generated code some kind of Java Collection class is expected to be generated. As there are many types of Collection classes the table below will explain how the information from the model will be used the find the best matching Java Collection type.

Multiplicity

Is Ordered

Is Unique

Type

0..1 or 1

n/a

n/a

Referenced Class from the UML model

0..* or 1..*

true

true

java.util.SortedSet

0..* or 1..*

false

true

java.util.Set

0..* or 1..*

true

false

java.util.List

0..* or 1..*

false

false

java.util.Collection

The screenshot below show shows an example of an 0..* association where attributes for Java Collections are defined. According to the table above class java.util.Set will be used in the generated code.

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JEAF Generator supports the following validation annotations:

Stereotype

Description*

Applicable Types
(in case of for primitives also their respective wrapper types)

AssertFalse

The annotated element must be false.

boolean

AssertTrue

The annotated element must be true.

boolean

DecimalMax

The annotated element must be a number whose value must be lower or equal to the specified maximum.

Note that double and float are not supported due to rounding errors.

BigDecimal, BigInteger, byte, short, int, long

DecimalMin

The annotated element must be a number whose value must be higher or equal to the specified minimum.

Note that double and float are not supported due to rounding errors.

BigDecimal, BigInteger, byte, short, int, long

Digits

The annotated element must be a number within accepted range.

BigDecimal, BigInteger, String, byte, short, int, long

Email

The string has to be a well-formed email address. Exact semantics of what makes up a valid email address are left to Jakarta Bean Validation providers.

String

Future

The annotated element must be an instant, date or time in the future.

Java date types

FutureOrPresent

The annotated element must be an instant, date or time in the present or in the future.

Java date types

Max

The annotated element must be a number whose value must be lower or equal to the specified maximum.

Note that double and float are not supported due to rounding errors.

BigDecimal, BigInteger, byte, short, int, long

Min

The annotated element must be a number whose value must be higher or equal to the specified minimum.

Note that double and float are not supported due to rounding errors.

BigDecimal, BigInteger, byte, short, int, long

Negative

The annotated element must be a strictly negative number (i.e. 0 is considered as an invalid value).

BigDecimal, BigInteger, byte, short, int, long , float, double

NegativeOrZero

The annotated element must be a negative number or 0.

BigDecimal, BigInteger, byte, short, int, long , float, double

NotBlank

The annotated element must not be null and must contain at least one non-whitespace character.

String

NotEmpty

The annotated element must not be null nor empty.

String

NotNull

The annotated element must not be null.

any type

Null

The annotated element must be null.

any tpye

Past

The annotated element must be an instant, date or time in the past.

Java date types

PastOrPresent

The annotated element must be an instant, date or time in the past or in the present.

Java date types

Pattern

The annotated String must match the specified regular expression.

The regular expression follows the Java regular expression conventions see java.util.regex.Pattern.

String

Positive

The annotated element must be a strictly positive number (i.e. 0 is considered as an invalid value).

BigDecimal, BigInteger, byte, short, int, long , float, double

PositiveOrZero

The annotated element must be a positive number or 0.

BigDecimal, BigInteger, byte, short, int, long , float, double

Size

The annotated element size must be between the specified boundaries (included).

String, Collection, Map, Array

Valid

Marks a property, method parameter or method return type for validation cascading.

Constraints defined on the object and its properties are be validated when the property, method parameter or method return type is validated.

This behavior is applied recursively.

Property, parameter or return type

* Description is taken from OpenJDK

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