At the moment the hibernate {{SchemaUpdate}} tool will export changes like this:
* create a new table
* add a new column
*
The hibernate schema update will not:
* drop a table
* drop a column
* change a constraint on a column
* add a column with a not-null constraint to an existing table
For example if I change my column definition from this:
{code}
@JoinColumn(name = "unit", nullable = false, referencedColumnName = "pk")
{code}
to this:
{code}
@JoinColumn(name = "unit", nullable = true, referencedColumnName = "pk")
{code}
and then I run schemaupdate there will be no changes detected. This proposal wants to improve the schemaupdate tool to also track changes like change constraints, drop a column or drop a table. |
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