/**
* Creates and returns DDL for creation of the type
*
* @return string
*/
public static function get_creation_sql($node_schema, $node_type)
{
if (strcasecmp($node_type['type'], 'enum') == 0) {
if (!isset($node_type->enum)) {
throw new exception("enum type contains no enum children");
}
$values = '';
for ($i = 0; $i < count($node_type->enum); $i++) {
$value = $node_type->enum[$i]['name'];
$values .= "'" . pg_escape_string($value) . "'";
if ($i < count($node_type->enum) - 1) {
$values .= ",";
}
}
$type_name = pgsql8::get_quoted_schema_name($node_schema['name']) . '.' . pgsql8::get_quoted_object_name($node_type['name']);
$ddl = "CREATE TYPE " . $type_name . " AS ENUM (" . $values . ");";
} else {
if (strcasecmp($node_type['type'], 'composite') == 0) {
if (!isset($node_type->typeCompositeElement)) {
throw new exception("composite type contains no typeCompositeElement children");
}
$type_name = pgsql8::get_quoted_schema_name($node_schema['name']) . '.' . pgsql8::get_quoted_object_name($node_type['name']);
$ddl = "CREATE TYPE " . $type_name . " AS (\n";
for ($i = 0; $i < count($node_type->typeCompositeElement); $i++) {
$tce_name = $node_type->typeCompositeElement[$i]['name'];
$tce_value = $node_type->typeCompositeElement[$i]['type'];
$ddl .= " " . $tce_name . " " . $tce_value;
if ($i < count($node_type->typeCompositeElement) - 1) {
$ddl .= ",";
}
$ddl .= "\n";
}
$ddl .= ");";
} else {
if (strcasecmp($node_type['type'], 'domain') == 0) {
$type_name = pgsql8::get_quoted_schema_name($node_schema['name']) . '.' . pgsql8::get_quoted_object_name($node_type['name']);
if (!isset($node_type->domainType)) {
throw new exception("domain type {$type_name} contains no domainType element");
}
$info_node = $node_type->domainType;
$base_type = trim($info_node['baseType']);
if ($base_type === '') {
throw new exception("No baseType was given for domain type {$name}");
}
$ddl = "CREATE DOMAIN {$type_name} AS {$base_type}";
if (isset($info_node['default'])) {
$ddl .= "\n DEFAULT " . pgsql8::value_escape($base_type, (string) $info_node['default']);
}
$null = strtolower($info_node['null']);
// NULL is the default, must match exactly "false" to be NOT NULL
if (strcasecmp($null, "false") === 0) {
$ddl .= "\n NOT NULL";
}
foreach ($node_type->domainConstraint as $domainConstraint) {
$constraint_name = trim($domainConstraint['name']);
if ($constraint_name === '') {
throw new exception("Empty domain constraint name for {$type_name}");
}
$check = trim($domainConstraint);
if ($check === '') {
throw new exception("Empty domain constraint for {$type_name}");
}
$check = self::normalize_domain_constraint($check);
$ddl .= "\n CONSTRAINT " . pgsql8::get_quoted_object_name($constraint_name) . " CHECK({$check})";
}
$ddl .= ';';
} else {
throw new exception("unknown type " . $node_type['name'] . ' type ' . $node_type['type']);
}
}
}
return $ddl;
}
/**
* Outputs commands for ALTER DOMAIN
* @param $ofs output file pointer
* @param $old_schema original schema
* @param $old_type original type
* @param $new_schema new schema
* @param $new_type new type
*/
private static function apply_domain_changes($ofs, $old_schema, $old_type, $new_schema, $new_type)
{
// http://www.postgresql.org/docs/8.1/static/sql-alterdomain.html
$domain = pgsql8::get_quoted_schema_name($new_schema['name']) . '.' . pgsql8::get_quoted_object_name($new_type['name']);
$old_domain = $old_type->domainType;
$new_domain = $new_type->domainType;
// if base type changes, we need to drop and re-add
if (strcasecmp($old_domain['baseType'], $new_domain['baseType']) !== 0) {
$ofs->write("-- domain base type changed from {$old_domain['baseType']} to {$new_domain['baseType']} - recreating\n");
$ofs->write(pgsql8_type::get_drop_sql($old_schema, $old_type) . "\n");
$ofs->write(pgsql8_type::get_creation_sql($new_schema, $new_type) . "\n");
return;
}
$base_type = strtolower($new_domain['baseType']);
// default is dropped
if (isset($old_domain['default']) && !isset($new_domain['default'])) {
$ofs->write("-- domain default dropped\n");
$ofs->write("ALTER DOMAIN {$domain} DROP DEFAULT;\n");
} elseif (strcmp($old_domain['default'], $new_domain['default']) !== 0) {
$old_default = pgsql8::value_escape($base_type, (string) $old_domain['default']);
$new_default = pgsql8::value_escape($base_type, (string) $new_domain['default']);
$ofs->write("-- domain default changed from {$old_default}\n");
$ofs->write("ALTER DOMAIN {$domain} SET DEFAULT {$new_default};\n");
}
$old_null = strcasecmp($old_domain['null'], 'false') !== 0;
$new_null = strcasecmp($new_domain['null'], 'false') !== 0;
// NULL -> NOT NULL
if ($old_null && !$new_null) {
$ofs->write("-- domain changed from NULL to NOT NULL\n");
$ofs->write("ALTER DOMAIN {$domain} SET NOT NULL;\n");
} elseif (!$old_null && $new_null) {
$ofs->write("-- domain changed from NOT NULL to NULL\n");
$ofs->write("ALTER DOMAIN {$domain} DROP NOT NULL;\n");
}
// diff constraints
$old_constraints = array();
foreach ($old_type->domainConstraint as $old_constraint) {
$old_constraints[(string) $old_constraint['name']] = pgsql8_type::normalize_domain_constraint($old_constraint);
}
foreach ($new_type->domainConstraint as $new_constraint) {
$name = (string) $new_constraint['name'];
$constraint = pgsql8_type::normalize_domain_constraint($new_constraint);
if (array_key_exists($name, $old_constraints)) {
if (strcmp($constraint, $old_constraints[$name]) !== 0) {
$ofs->write("-- domain constraint {$name} changed from {$old_constraints[$name]}\n");
$ofs->write("ALTER DOMAIN {$domain} DROP CONSTRAINT {$name};\n");
$ofs->write("ALTER DOMAIN {$domain} ADD CONSTRAINT {$name} CHECK({$constraint});\n");
}
unset($old_constraints[$name]);
} else {
$ofs->write("-- domain constraint {$name} added\n");
$ofs->write("ALTER DOMAIN {$domain} ADD CONSTRAINT {$name} CHECK({$constraint});\n");
}
}
foreach ($old_constraints as $name => $constraint) {
$ofs->write("-- domain constraint {$name} removed\n");
$ofs->write("ALTER DOMAIN {$domain} DROP CONSTRAINT {$name};\n");
}
}
/**
* compare composite db doc to specified database
*
* @return string XML
*/
public static function compare_db_data($db_doc, $host, $port, $database, $user, $password)
{
dbsteward::notice("Connecting to pgsql8 host " . $host . ':' . $port . ' database ' . $database . ' as ' . $user);
// if not supplied, ask for the password
if ($password === FALSE) {
// @TODO: mask the password somehow without requiring a PHP extension
echo "Password: "******"host={$host} port={$port} dbname={$database} user={$user} password={$password}");
dbsteward::info("Comparing composited dbsteward definition data rows to postgresql database connection table contents");
// compare the composited dbsteward document to the established database connection
// effectively looking to see if rows are found that match primary keys, and if their contents are the same
foreach ($db_doc->schema as $schema) {
foreach ($schema->table as $table) {
if (isset($table->rows)) {
$table_name = dbsteward::string_cast($schema['name']) . '.' . dbsteward::string_cast($table['name']);
$primary_key_cols = self::primary_key_split($table['primaryKey']);
$cols = preg_split("/[\\,\\s]+/", $table->rows['columns'], -1, PREG_SPLIT_NO_EMPTY);
$col_types = array();
foreach ($table->column as $table_column) {
$type = '';
// foreign keyed columns inherit their foreign reference type
if (isset($table_column['foreignTable']) && isset($table_column['foreignColumn'])) {
if (strlen($type) > 0) {
throw new exception("type of " . $type . " was found for " . dbsteward::string_cast($cols[$j]) . " in table " . dbsteward::string_cast($table['name']) . " but it is foreign keyed!");
}
$foreign = array();
dbx::foreign_key($db_doc, $schema, $table, $table_column, $foreign);
// don't need to error-check, foreign_key() is self-checking if it doesnt find the fkey col it will complain
$type = $foreign['column']['type'];
} else {
$type = dbsteward::string_cast($table_column['type']);
}
if (strlen($type) == 0) {
throw new exception($table_name . " column " . $table_column['name'] . " type not found!");
}
$col_types[dbsteward::string_cast($table_column['name'])] = $type;
}
foreach ($table->rows->row as $row) {
// glue the primary key expression together for the where
$primary_key_expression = '';
for ($k = 0; $k < count($primary_key_cols); $k++) {
$column_name = pgsql8::get_quoted_column_name($primary_key_cols[$k]);
$pk_index = array_search($primary_key_cols[$k], $cols);
if ($pk_index === FALSE) {
throw new exception("failed to find " . $schema['name'] . "." . $table['name'] . " primary key column " . $primary_key_cols[$k] . " in cols list (" . implode(", ", $cols) . ")");
}
$primary_key_expression .= $column_name . " = " . pgsql8::value_escape($col_types[$primary_key_cols[$k]], $row->col[$pk_index], $db_doc);
if ($k < count($primary_key_cols) - 1) {
$primary_key_expression .= ' AND ';
}
}
$sql = "SELECT *\n FROM " . $table_name . "\n WHERE " . $primary_key_expression;
$rs = pgsql8_db::query($sql);
// is the row supposed to be deleted?
if (strcasecmp('true', $row['delete']) == 0) {
if (pg_num_rows($rs) > 0) {
dbsteward::notice($table_name . " row marked for DELETE found WHERE " . $primary_key_expression);
}
} else {
if (pg_num_rows($rs) == 0) {
dbsteward::notice($table_name . " does not contain row WHERE " . $primary_key_expression);
} else {
if (pg_num_rows($rs) > 1) {
dbsteward::notice($table_name . " contains more than one row WHERE " . $primary_key_expression);
while (($db_row = pg_fetch($rs)) !== FALSE) {
dbsteward::notice("\t" . implode(', ', $db_row));
}
} else {
$db_row = pg_fetch_assoc($rs);
// make sure any aspects of the $row are present in the $db_row
for ($i = 0; $i < count($cols); $i++) {
$xml_value = self::pgdata_homogenize($col_types[$cols[$i]], dbsteward::string_cast($row->col[$i]));
$db_value = self::pgdata_homogenize($col_types[$cols[$i]], dbsteward::string_cast($db_row[$cols[$i]]));
$values_match = FALSE;
// evaluate if they are equal
$values_match = $xml_value == $db_value;
// if they are not PHP equal, and are alternate expressionable, ask the database
if (!$values_match && preg_match('/^time.*|^date.*|^interval/i', $col_types[$cols[$i]]) > 0) {
// do both describe atleast some value (greater than zero len?)
if (strlen($xml_value) > 0 && strlen($db_value) > 0) {
$sql = "SELECT '{$xml_value}'::" . $col_types[$cols[$i]] . " = '{$db_value}'::" . $col_types[$cols[$i]] . " AS equal_eval";
$values_match = pgsql8_db::query_str($sql) == 't';
}
}
if (!$values_match) {
dbsteward::warning($table_name . " row column WHERE (" . $primary_key_expression . ") " . $cols[$i] . " data does not match database row column: '" . $xml_value . "' VS '" . $db_value . "'");
}
}
}
}
}
}
}
}
}
//xml_parser::validate_xml($db_doc->asXML());
return xml_parser::format_xml($db_doc->saveXML());
}
