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MDL-69973 xmldb: Fix problem with MariaDB >= 10.2.7 metadata defaults

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With MariaDB 10.2.7 the driver was incorrectly returning '' (empty
string) as default for all the columns having null (meaning, no
default).

Also, cover the case in unit tests, it seems that we were already
testing other defaults but not the null case.
This commit is contained in:
Eloy Lafuente (stronk7) 2020-10-18 11:53:37 +02:00
parent 58ba94a729
commit 533c35ff99
2 changed files with 37 additions and 3 deletions
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2
lib/dml/mysqli_native_moodle_database.php
View File

@ -886,7 +886,7 @@ class mysqli_native_moodle_database extends moodle_database {
$info->type = $rawcolumn->data_type;
$info->meta_type = $this->mysqltype2moodletype($rawcolumn->data_type);
if ($this->has_breaking_change_quoted_defaults()) {
$info->default_value = trim($rawcolumn->column_default, "'");
$info->default_value = is_null($rawcolumn->column_default) ? null : trim($rawcolumn->column_default, "'");
if ($info->default_value === 'NULL') {
$info->default_value = null;
}

38
lib/dml/tests/dml_test.php
View File

@ -722,9 +722,13 @@ EOD;
$table->add_field('course', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
$table->add_field('name', XMLDB_TYPE_CHAR, '255', null, null, null, 'lala');
$table->add_field('description', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
$table->add_field('oneint', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
$table->add_field('oneintnodefault', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null);
$table->add_field('enumfield', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, 'test2');
$table->add_field('onenum', XMLDB_TYPE_NUMBER, '10,2', null, null, null, 200);
$table->add_field('onefloat', XMLDB_TYPE_FLOAT, '10,2', null, null, null, 300);
$table->add_field('onenumnodefault', XMLDB_TYPE_NUMBER, '10,2', null, null, null);
$table->add_field('onefloat', XMLDB_TYPE_FLOAT, '10,2', null, XMLDB_NOTNULL, null, 300);
$table->add_field('onefloatnodefault', XMLDB_TYPE_FLOAT, '10,2', null, XMLDB_NOTNULL, null);
$table->add_field('anotherfloat', XMLDB_TYPE_FLOAT, null, null, null, null, 400);
$table->add_field('negativedfltint', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '-1');
$table->add_field('negativedfltnumber', XMLDB_TYPE_NUMBER, '10', null, XMLDB_NOTNULL, null, '-2');
@ -785,6 +789,20 @@ EOD;
$this->assertNull($field->default_value);
$this->assertFalse($field->not_null);
$field = $columns['oneint'];
$this->assertSame('I', $field->meta_type);
$this->assertFalse($field->auto_increment);
$this->assertTrue($field->has_default);
$this->assertEquals(0, $field->default_value);
$this->assertTrue($field->not_null);
$field = $columns['oneintnodefault'];
$this->assertSame('I', $field->meta_type);
$this->assertFalse($field->auto_increment);
$this->assertFalse($field->has_default);
$this->assertNull($field->default_value);
$this->assertTrue($field->not_null);
$field = $columns['enumfield'];
$this->assertSame('C', $field->meta_type);
$this->assertFalse($field->auto_increment);
@ -800,12 +818,28 @@ EOD;
$this->assertEquals(200.0, $field->default_value);
$this->assertFalse($field->not_null);
$field = $columns['onenumnodefault'];
$this->assertSame('N', $field->meta_type);
$this->assertFalse($field->auto_increment);
$this->assertEquals(10, $field->max_length);
$this->assertEquals(2, $field->scale);
$this->assertFalse($field->has_default);
$this->assertNull($field->default_value);
$this->assertFalse($field->not_null);
$field = $columns['onefloat'];
$this->assertSame('N', $field->meta_type);
$this->assertFalse($field->auto_increment);
$this->assertTrue($field->has_default);
$this->assertEquals(300.0, $field->default_value);
$this->assertFalse($field->not_null);
$this->assertTrue($field->not_null);
$field = $columns['onefloatnodefault'];
$this->assertSame('N', $field->meta_type);
$this->assertFalse($field->auto_increment);
$this->assertFalse($field->has_default);
$this->assertNull($field->default_value);
$this->assertTrue($field->not_null);
$field = $columns['anotherfloat'];
$this->assertSame('N', $field->meta_type);