/**
* Outputs commands for dropping types.
*
* @param $ofs output file pointer
* @param $old_schema original schema
* @param $new_schema new schema
*/
private static function drop_types($ofs, $old_schema, $new_schema)
{
if ($old_schema != NULL) {
foreach (dbx::get_types($old_schema) as $type) {
if (!mssql10_schema::contains_type($new_schema, $type['name'])) {
$ofs->write(mssql10_type::get_drop_sql($new_schema, $type) . "\n");
}
}
}
}
/**
* Outputs DDL for differences in functions
*
* @param $ofs1 stage1 output pointer
* @param $ofs3 stage3 output pointer
* @param $old_schema original schema
* @param $new_schema new schema
*/
public static function diff_functions($ofs1, $ofs3, $old_schema, $new_schema)
{
// drop functions that no longer exist in stage 3
if ($old_schema != NULL) {
foreach (dbx::get_functions($old_schema) as $old_function) {
if (!mssql10_schema::contains_function($new_schema, mssql10_function::get_declaration($new_schema, $old_function))) {
$ofs3->write(mssql10_function::get_drop_sql($old_schema, $old_function) . "\n");
}
}
}
// Add new functions and replace modified functions
foreach (dbx::get_functions($new_schema) as $new_function) {
$old_function = NULL;
if ($old_schema != NULL) {
$old_function = dbx::get_function($old_schema, $new_function['name'], mssql10_function::get_declaration($new_schema, $new_function));
}
if ($old_function == NULL) {
$ofs1->write(mssql10_function::get_creation_sql($new_schema, $new_function) . "\n");
} else {
if (!mssql10_function::equals($new_schema, $new_function, $old_function, mssql10_diff::$ignore_function_whitespace)) {
// functions are not equal, old_function is not null, it previously existed
// for MSSQL, there is no CREATE OR REPLACE FUNCTION, so drop the function explicitly
$ofs1->write(mssql10_function::get_drop_sql($old_schema, $old_function) . "\n");
$ofs1->write(mssql10_function::get_creation_sql($new_schema, $new_function) . "\n");
} else {
if (isset($new_function['forceRedefine']) && strcasecmp($new_function['forceRedefine'], 'true') == 0) {
$ofs1->write("-- DBSteward insists on function recreation: " . $new_schema['name'] . "." . $new_function['name'] . " has forceRedefine set to true\n");
$ofs1->write(mssql10_function::get_creation_sql($new_schema, $new_function) . "\n");
} else {
if (mssql10_schema::contains_type($new_schema, $new_function['returns']) && mssql10_schema::contains_type($old_schema, $new_function['returns']) && !mssql10_type::equals(dbx::get_type($old_schema, $new_function['returns']), dbx::get_type($new_schema, $new_function['returns']))) {
$ofs1->write("-- dbstward insisting on function re-creation " . $new_function['name'] . " for type " . $new_function['returns'] . " definition change\n");
$ofs1->write(mssql10_function::get_drop_sql($old_schema, $old_function) . "\n");
$ofs1->write(mssql10_function::get_creation_sql($new_schema, $new_function) . "\n");
}
}
}
}
}
}
/**
* column_constraint_temporary_drop's companion - restore $columns list of columns to $node_type type
*
* @param $columns reference columns returned by reference
* @param $node_schema
* @param $node_type
* @return string DDL
*/
public static function column_constraint_restore($columns, $node_schema, $node_type)
{
$ddl = '';
foreach ($columns as $column_map) {
$ddl .= mssql10_type::get_add_check_sql($column_map['alter_column_schema'], $column_map['alter_column_table'], $column_map['alter_column_column'], $node_type);
}
return $ddl;
}
public function build_schema($db_doc, $ofs, $table_depends)
{
// explicitly create the ROLE_APPLICATION
// webservers connect as a user granted this role
$ofs->write("CREATE ROLE " . $db_doc->database->role->application . ";\n");
// schema creation
foreach ($db_doc->schema as $schema) {
$ofs->write(mssql10_schema::get_creation_sql($schema));
// schema grants
if (isset($schema->grant)) {
foreach ($schema->grant as $grant) {
$ofs->write(mssql10_permission::get_sql($db_doc, $schema, $schema, $grant) . "\n");
}
}
}
// types: enumerated list, etc
foreach ($db_doc->schema as $schema) {
foreach ($schema->type as $type) {
$ofs->write(mssql10_type::get_creation_sql($schema, $type) . "\n");
}
}
// function definitions
foreach ($db_doc->schema as $schema) {
foreach ($schema->function as $function) {
if (mssql10_function::has_definition($function)) {
$ofs->write(mssql10_function::get_creation_sql($schema, $function));
}
}
}
$ofs->write("\n");
// table structure creation
foreach ($db_doc->schema as $schema) {
// create defined tables
foreach ($schema->table as $table) {
// table definition
$ofs->write(mssql10_table::get_creation_sql($schema, $table) . "\n");
// table indexes
mssql10_diff_indexes::diff_indexes_table($ofs, NULL, NULL, $schema, $table);
// table grants
if (isset($table->grant)) {
foreach ($table->grant as $grant) {
$ofs->write(mssql10_permission::get_sql($db_doc, $schema, $table, $grant) . "\n");
}
}
$ofs->write("\n");
}
// sequences contained in the schema
if (isset($schema->sequence)) {
foreach ($schema->sequence as $sequence) {
$ofs->write(mssql10_bit_table::get_creation_sql($schema, $sequence) . "\n");
// sequence permission grants
if (isset($sequence->grant)) {
foreach ($sequence->grant as $grant) {
$ofs->write(mssql10_permission::get_sql($db_doc, $schema, $sequence, $grant) . "\n");
}
}
}
}
}
$ofs->write("\n");
// define table primary keys before foreign keys so unique requirements are always met for FOREIGN KEY constraints
foreach ($db_doc->schema as $schema) {
foreach ($schema->table as $table) {
mssql10_diff_tables::diff_constraints_table($ofs, NULL, NULL, $schema, $table, 'primaryKey', FALSE);
}
}
$ofs->write("\n");
// foreign key references
// use the dependency order to specify foreign keys in an order that will satisfy nested foreign keys and etc
for ($i = 0; $i < count($table_depends); $i++) {
$schema = $table_depends[$i]['schema'];
$table = $table_depends[$i]['table'];
if ($table['name'] === dbsteward::TABLE_DEPENDENCY_IGNORABLE_NAME) {
// don't do anything with this table, it is a magic internal DBSteward value
continue;
}
mssql10_diff_tables::diff_constraints_table($ofs, NULL, NULL, $schema, $table, 'constraint', FALSE);
}
$ofs->write("\n");
// trigger definitions
foreach ($db_doc->schema as $schema) {
foreach ($schema->trigger as $trigger) {
// only do triggers set to the current sql format
if (strcasecmp($trigger['sqlFormat'], dbsteward::get_sql_format()) == 0) {
$ofs->write(mssql10_trigger::get_creation_sql($schema, $trigger));
}
}
}
$ofs->write("\n");
// view creation
foreach ($db_doc->schema as $schema) {
foreach ($schema->view as $view) {
$ofs->write(mssql10_view::get_creation_sql($schema, $view));
// view permission grants
if (isset($view->grant)) {
foreach ($view->grant as $grant) {
$ofs->write(mssql10_permission::get_sql($db_doc, $schema, $view, $grant) . "\n");
}
}
}
}
$ofs->write("\n");
// @TODO: database configurationParameter support needed ?
}
public static function enum_type_check($db_doc, $node_schema, $node_table, $node_column, &$drop_sql, &$add_sql)
{
// if the column type is a defined enum, (re)add a check constraint to enforce the pseudo-enum
$foreign = array();
$column_type = mssql10_column::column_type($db_doc, $node_schema, $node_table, $node_column, $foreign, FALSE);
if (preg_match('/' . dbx::enum_regex($db_doc) . '/i', $column_type) > 0) {
$type_schema_name = sql_parser::get_schema_name($column_type, $db_doc);
$type_schema = dbx::get_schema($db_doc, $type_schema_name);
$node_type = dbx::get_type($type_schema, sql_parser::get_object_name($column_type, $db_doc));
if (!$node_type) {
var_dump($node_type);
throw new exception('failed to find column_type ' . $column_type . ' in type_schema_name ' . $type_schema_name);
}
$drop_sql = mssql10_type::get_drop_check_sql($node_schema, $node_table, $node_column, $node_type);
$add_sql = mssql10_type::get_add_check_sql($node_schema, $node_table, $node_column, $node_type);
return TRUE;
}
return FALSE;
}
