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Now we aren't guessing check constraint names

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but getting the real ones under PostgreSQL. MDL-9356
This commit is contained in:
stronk7 2007-09-11 19:06:38 +00:00
parent 3e38ceb837
commit f0dfc20124
1 changed files with 11 additions and 4 deletions
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15
lib/xmldb/classes/generators/postgres7/postgres7.class.php
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@ -400,14 +400,21 @@ class XMLDBpostgres7 extends XMLDBgenerator {
' ADD ' . $this->getEnumExtraSQL($xmldb_table, $xmldb_field));
}
/**
/**
* Given one XMLDBTable and one XMLDBField, return the SQL statements needded to drop its enum
* (usually invoked from getModifyEnumSQL()
*/
function getDropEnumSQL($xmldb_table, $xmldb_field) {
/// All we have to do is to drop the check constraint
return array('ALTER TABLE ' . $this->getTableName($xmldb_table) .
' DROP CONSTRAINT ' . $this->getStandardNameForObject($xmldb_table->getName(), $xmldb_field->getName(), 'ck'));
/// Let's introspect to know the real name of the check constraint
if ($check_constraints = $this->getCheckConstraintsFromDB($xmldb_table, $xmldb_field)) {
$check_constraint = array_shift($check_constraints); /// Get the 1st (should be only one)
$constraint_name = strtolower($check_constraint->name); /// Extract the REAL name
/// All we have to do is to drop the check constraint
return array('ALTER TABLE ' . $this->getTableName($xmldb_table) .
' DROP CONSTRAINT ' . $constraint_name);
} else { /// Constraint not found. Nothing to do
return array();
}
}
/**