/**
* Changes the "allows null" state of this column.
*
* @param allowsNull if true, this column allows nulls
* @throws SQLException if the change fails
*/
@SuppressWarnings("unchecked")
public void setAllowsNull(boolean allowsNull) throws SQLException {
EOSchemaSynchronization schemaSynchronization = _table.database().synchronizationFactory();
NSArray<EOSQLExpression> expressions =
schemaSynchronization.statementsToModifyColumnNullRule(
name(),
_table.name(),
allowsNull,
(NSDictionary<String, String>) NSDictionary.EmptyDictionary);
ERXMigrationDatabase._ensureNotEmpty(expressions, "modify allows null", true);
ERXJDBCUtilities.executeUpdateScript(
_table.database().adaptorChannel(),
ERXMigrationDatabase._stringsForExpressions(expressions));
}
