Tag: Hibernate

I spent a bit of time figuring out what all the annotations for a Hibernate/JPA @Id field should be, and wanted to document it.

First up, with any entity, you need to add an @Id annotation to a field, I typically use a Long field. Continue reading Hibernate @GeneratedValue

Here’s a list of annotations that you can use to validate java beans:

• @Length(min=, max=) Checks whether the string length matches the range
• @Max(value=) Checks that the value is less than or equal to the max
• @Min(value=) Checks that the value is greater than or equal to the min
• @NotNull Checks that the value is not null
• @Past For a date object, checks that the date is in the past
• @Future For a date object, checks that the date is in the future
• @Pattern(regex=”regexp”, flag=) For a string, checks that the string matches this pattern
• @Range(min=, max=) Checks whether the value is between the min and the max
• @Size(min=, max=) For collections, checks that the size is between the two
• @AssertFalse Asserts that the evaluation of the method is false
• @AssertTrue Asserts that the evaluation of the method is true
• @Valid For a collection or a map, checks that all the objects they contain are valid
• @Email Checks whether the string conforms to the email address specification

From Depressed Programmer.