precision and scale in @column

Question

Here I read that length in @column is only for generated DDL. Is this true for precision and scale?

    @Column(precision = 15, scale = 5)
    private Integer myField;

If so: How to define precision and scale for JPA-validation?

Neil Stockton · Answer 1 · 2016-01-05T12:49:00.327

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The JPA javadocs and spec (links on this page) make it clear that these values are for schema generation ONLY. They are also not part of the the Bean Validation standard, so nothing to do with "validation".

edited Jan 05 '16 at 12:49

answered Jan 05 '16 at 11:29

Neil Stockton

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please add (exact) references to the spec/javadoc, might be helpful for @Chris311 – MWiesner Jan 05 '16 at 12:09
So I can only define this constraint on the db (with NUMBER(15,5))? – Chris311 Jan 05 '16 at 12:21
For an Integer field a scale will likely be of little use (depending on the DB). Some DBs don't even support precision. – Neil Stockton Jan 05 '16 at 12:49

score 0 · Accepted Answer · answered Jan 07 '16 at 07:45

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I found out how to do this:

@Column
@Digits(integer = 15, fraction = 5)
private Integer myField;

answered Jan 07 '16 at 07:45

Chris311

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precision and scale in @column

2 Answers2