framework/db/pgsql/Schema.php
<?php
/**
* @link https://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license https://www.yiiframework.com/license/
*/
namespace yii\db\pgsql;
use Yii;
use yii\base\NotSupportedException;
use yii\db\CheckConstraint;
use yii\db\Constraint;
use yii\db\ConstraintFinderInterface;
use yii\db\ConstraintFinderTrait;
use yii\db\Expression;
use yii\db\ForeignKeyConstraint;
use yii\db\IndexConstraint;
use yii\db\TableSchema;
use yii\db\ViewFinderTrait;
use yii\helpers\ArrayHelper;
/**
* Schema is the class for retrieving metadata from a PostgreSQL database
* (version 9.x and above).
*
* @author Gevik Babakhani <gevikb@gmail.com>
* @since 2.0
*/
class Schema extends \yii\db\Schema implements ConstraintFinderInterface
{
use ViewFinderTrait;
use ConstraintFinderTrait;
const TYPE_JSONB = 'jsonb';
/**
* @var string the default schema used for the current session.
*/
public $defaultSchema = 'public';
/**
* {@inheritdoc}
*/
public $columnSchemaClass = 'yii\db\pgsql\ColumnSchema';
/**
* @var array mapping from physical column types (keys) to abstract
* column types (values)
* @see https://www.postgresql.org/docs/current/datatype.html#DATATYPE-TABLE
*/
public $typeMap = [
'bit' => self::TYPE_INTEGER,
'bit varying' => self::TYPE_INTEGER,
'varbit' => self::TYPE_INTEGER,
'bool' => self::TYPE_BOOLEAN,
'boolean' => self::TYPE_BOOLEAN,
'box' => self::TYPE_STRING,
'circle' => self::TYPE_STRING,
'point' => self::TYPE_STRING,
'line' => self::TYPE_STRING,
'lseg' => self::TYPE_STRING,
'polygon' => self::TYPE_STRING,
'path' => self::TYPE_STRING,
'character' => self::TYPE_CHAR,
'char' => self::TYPE_CHAR,
'bpchar' => self::TYPE_CHAR,
'character varying' => self::TYPE_STRING,
'varchar' => self::TYPE_STRING,
'text' => self::TYPE_TEXT,
'bytea' => self::TYPE_BINARY,
'cidr' => self::TYPE_STRING,
'inet' => self::TYPE_STRING,
'macaddr' => self::TYPE_STRING,
'real' => self::TYPE_FLOAT,
'float4' => self::TYPE_FLOAT,
'double precision' => self::TYPE_DOUBLE,
'float8' => self::TYPE_DOUBLE,
'decimal' => self::TYPE_DECIMAL,
'numeric' => self::TYPE_DECIMAL,
'money' => self::TYPE_MONEY,
'smallint' => self::TYPE_SMALLINT,
'int2' => self::TYPE_SMALLINT,
'int4' => self::TYPE_INTEGER,
'int' => self::TYPE_INTEGER,
'integer' => self::TYPE_INTEGER,
'bigint' => self::TYPE_BIGINT,
'int8' => self::TYPE_BIGINT,
'oid' => self::TYPE_BIGINT, // should not be used. it's pg internal!
'smallserial' => self::TYPE_SMALLINT,
'serial2' => self::TYPE_SMALLINT,
'serial4' => self::TYPE_INTEGER,
'serial' => self::TYPE_INTEGER,
'bigserial' => self::TYPE_BIGINT,
'serial8' => self::TYPE_BIGINT,
'pg_lsn' => self::TYPE_BIGINT,
'date' => self::TYPE_DATE,
'interval' => self::TYPE_STRING,
'time without time zone' => self::TYPE_TIME,
'time' => self::TYPE_TIME,
'time with time zone' => self::TYPE_TIME,
'timetz' => self::TYPE_TIME,
'timestamp without time zone' => self::TYPE_TIMESTAMP,
'timestamp' => self::TYPE_TIMESTAMP,
'timestamp with time zone' => self::TYPE_TIMESTAMP,
'timestamptz' => self::TYPE_TIMESTAMP,
'abstime' => self::TYPE_TIMESTAMP,
'tsquery' => self::TYPE_STRING,
'tsvector' => self::TYPE_STRING,
'txid_snapshot' => self::TYPE_STRING,
'unknown' => self::TYPE_STRING,
'uuid' => self::TYPE_STRING,
'json' => self::TYPE_JSON,
'jsonb' => self::TYPE_JSON,
'xml' => self::TYPE_STRING,
];
/**
* {@inheritdoc}
*/
protected $tableQuoteCharacter = '"';
/**
* {@inheritdoc}
*/
protected function resolveTableName($name)
{
$resolvedName = new TableSchema();
$parts = explode('.', str_replace('"', '', $name));
if (isset($parts[1])) {
$resolvedName->schemaName = $parts[0];
$resolvedName->name = $parts[1];
} else {
$resolvedName->schemaName = $this->defaultSchema;
$resolvedName->name = $name;
}
$resolvedName->fullName = ($resolvedName->schemaName !== $this->defaultSchema ? $resolvedName->schemaName . '.' : '') . $resolvedName->name;
return $resolvedName;
}
/**
* {@inheritdoc}
*/
protected function findSchemaNames()
{
static $sql = <<<'SQL'
SELECT "ns"."nspname"
FROM "pg_namespace" AS "ns"
WHERE "ns"."nspname" != 'information_schema' AND "ns"."nspname" NOT LIKE 'pg_%'
ORDER BY "ns"."nspname" ASC
SQL;
return $this->db->createCommand($sql)->queryColumn();
}
/**
* {@inheritdoc}
*/
protected function findTableNames($schema = '')
{
if ($schema === '') {
$schema = $this->defaultSchema;
}
$sql = <<<'SQL'
SELECT c.relname AS table_name
FROM pg_class c
INNER JOIN pg_namespace ns ON ns.oid = c.relnamespace
WHERE ns.nspname = :schemaName AND c.relkind IN ('r','v','m','f', 'p')
ORDER BY c.relname
SQL;
return $this->db->createCommand($sql, [':schemaName' => $schema])->queryColumn();
}
/**
* {@inheritdoc}
*/
protected function loadTableSchema($name)
{
$table = new TableSchema();
$this->resolveTableNames($table, $name);
if ($this->findColumns($table)) {
$this->findConstraints($table);
return $table;
}
return null;
}
/**
* {@inheritdoc}
*/
protected function loadTablePrimaryKey($tableName)
{
return $this->loadTableConstraints($tableName, 'primaryKey');
}
/**
* {@inheritdoc}
*/
protected function loadTableForeignKeys($tableName)
{
return $this->loadTableConstraints($tableName, 'foreignKeys');
}
/**
* {@inheritdoc}
*/
protected function loadTableIndexes($tableName)
{
static $sql = <<<'SQL'
SELECT
"ic"."relname" AS "name",
"ia"."attname" AS "column_name",
"i"."indisunique" AS "index_is_unique",
"i"."indisprimary" AS "index_is_primary"
FROM "pg_class" AS "tc"
INNER JOIN "pg_namespace" AS "tcns"
ON "tcns"."oid" = "tc"."relnamespace"
INNER JOIN "pg_index" AS "i"
ON "i"."indrelid" = "tc"."oid"
INNER JOIN "pg_class" AS "ic"
ON "ic"."oid" = "i"."indexrelid"
INNER JOIN "pg_attribute" AS "ia"
ON "ia"."attrelid" = "i"."indexrelid"
WHERE "tcns"."nspname" = :schemaName AND "tc"."relname" = :tableName
ORDER BY "ia"."attnum" ASC
SQL;
$resolvedName = $this->resolveTableName($tableName);
$indexes = $this->db->createCommand($sql, [
':schemaName' => $resolvedName->schemaName,
':tableName' => $resolvedName->name,
])->queryAll();
$indexes = $this->normalizePdoRowKeyCase($indexes, true);
$indexes = ArrayHelper::index($indexes, null, 'name');
$result = [];
foreach ($indexes as $name => $index) {
$result[] = new IndexConstraint([
'isPrimary' => (bool) $index[0]['index_is_primary'],
'isUnique' => (bool) $index[0]['index_is_unique'],
'name' => $name,
'columnNames' => ArrayHelper::getColumn($index, 'column_name'),
]);
}
return $result;
}
/**
* {@inheritdoc}
*/
protected function loadTableUniques($tableName)
{
return $this->loadTableConstraints($tableName, 'uniques');
}
/**
* {@inheritdoc}
*/
protected function loadTableChecks($tableName)
{
return $this->loadTableConstraints($tableName, 'checks');
}
/**
* {@inheritdoc}
* @throws NotSupportedException if this method is called.
*/
protected function loadTableDefaultValues($tableName)
{
throw new NotSupportedException('PostgreSQL does not support default value constraints.');
}
/**
* Creates a query builder for the PostgreSQL database.
* @return QueryBuilder query builder instance
*/
public function createQueryBuilder()
{
return Yii::createObject(QueryBuilder::className(), [$this->db]);
}
/**
* Resolves the table name and schema name (if any).
* @param TableSchema $table the table metadata object
* @param string $name the table name
*/
protected function resolveTableNames($table, $name)
{
$parts = explode('.', str_replace('"', '', $name));
if (isset($parts[1])) {
$table->schemaName = $parts[0];
$table->name = $parts[1];
} else {
$table->schemaName = $this->defaultSchema;
$table->name = $parts[0];
}
$table->fullName = $table->schemaName !== $this->defaultSchema ? $table->schemaName . '.' . $table->name : $table->name;
}
/**
* {@inheritdoc]
*/
protected function findViewNames($schema = '')
{
if ($schema === '') {
$schema = $this->defaultSchema;
}
$sql = <<<'SQL'
SELECT c.relname AS table_name
FROM pg_class c
INNER JOIN pg_namespace ns ON ns.oid = c.relnamespace
WHERE ns.nspname = :schemaName AND (c.relkind = 'v' OR c.relkind = 'm')
ORDER BY c.relname
SQL;
return $this->db->createCommand($sql, [':schemaName' => $schema])->queryColumn();
}
/**
* Collects the foreign key column details for the given table.
* @param TableSchema $table the table metadata
*/
protected function findConstraints($table)
{
$tableName = $this->quoteValue($table->name);
$tableSchema = $this->quoteValue($table->schemaName);
//We need to extract the constraints de hard way since:
//https://www.postgresql.org/message-id/26677.1086673982@sss.pgh.pa.us
$sql = <<<SQL
select
ct.conname as constraint_name,
a.attname as column_name,
fc.relname as foreign_table_name,
fns.nspname as foreign_table_schema,
fa.attname as foreign_column_name
from
(SELECT ct.conname, ct.conrelid, ct.confrelid, ct.conkey, ct.contype, ct.confkey, generate_subscripts(ct.conkey, 1) AS s
FROM pg_constraint ct
) AS ct
inner join pg_class c on c.oid=ct.conrelid
inner join pg_namespace ns on c.relnamespace=ns.oid
inner join pg_attribute a on a.attrelid=ct.conrelid and a.attnum = ct.conkey[ct.s]
left join pg_class fc on fc.oid=ct.confrelid
left join pg_namespace fns on fc.relnamespace=fns.oid
left join pg_attribute fa on fa.attrelid=ct.confrelid and fa.attnum = ct.confkey[ct.s]
where
ct.contype='f'
and c.relname={$tableName}
and ns.nspname={$tableSchema}
order by
fns.nspname, fc.relname, a.attnum
SQL;
$constraints = [];
foreach ($this->db->createCommand($sql)->queryAll() as $constraint) {
if ($this->db->slavePdo->getAttribute(\PDO::ATTR_CASE) === \PDO::CASE_UPPER) {
$constraint = array_change_key_case($constraint, CASE_LOWER);
}
if ($constraint['foreign_table_schema'] !== $this->defaultSchema) {
$foreignTable = $constraint['foreign_table_schema'] . '.' . $constraint['foreign_table_name'];
} else {
$foreignTable = $constraint['foreign_table_name'];
}
$name = $constraint['constraint_name'];
if (!isset($constraints[$name])) {
$constraints[$name] = [
'tableName' => $foreignTable,
'columns' => [],
];
}
$constraints[$name]['columns'][$constraint['column_name']] = $constraint['foreign_column_name'];
}
foreach ($constraints as $name => $constraint) {
$table->foreignKeys[$name] = array_merge([$constraint['tableName']], $constraint['columns']);
}
}
/**
* Gets information about given table unique indexes.
* @param TableSchema $table the table metadata
* @return array with index and column names
*/
protected function getUniqueIndexInformation($table)
{
$sql = <<<'SQL'
SELECT
i.relname as indexname,
pg_get_indexdef(idx.indexrelid, k + 1, TRUE) AS columnname
FROM (
SELECT *, generate_subscripts(indkey, 1) AS k
FROM pg_index
) idx
INNER JOIN pg_class i ON i.oid = idx.indexrelid
INNER JOIN pg_class c ON c.oid = idx.indrelid
INNER JOIN pg_namespace ns ON c.relnamespace = ns.oid
WHERE idx.indisprimary = FALSE AND idx.indisunique = TRUE
AND c.relname = :tableName AND ns.nspname = :schemaName
ORDER BY i.relname, k
SQL;
return $this->db->createCommand($sql, [
':schemaName' => $table->schemaName,
':tableName' => $table->name,
])->queryAll();
}
/**
* Returns all unique indexes for the given table.
*
* Each array element is of the following structure:
*
* ```php
* [
* 'IndexName1' => ['col1' [, ...]],
* 'IndexName2' => ['col2' [, ...]],
* ]
* ```
*
* @param TableSchema $table the table metadata
* @return array all unique indexes for the given table.
*/
public function findUniqueIndexes($table)
{
$uniqueIndexes = [];
foreach ($this->getUniqueIndexInformation($table) as $row) {
if ($this->db->slavePdo->getAttribute(\PDO::ATTR_CASE) === \PDO::CASE_UPPER) {
$row = array_change_key_case($row, CASE_LOWER);
}
$column = $row['columnname'];
if (strncmp($column, '"', 1) === 0) {
// postgres will quote names that are not lowercase-only
// https://github.com/yiisoft/yii2/issues/10613
$column = substr($column, 1, -1);
}
$uniqueIndexes[$row['indexname']][] = $column;
}
return $uniqueIndexes;
}
/**
* Collects the metadata of table columns.
* @param TableSchema $table the table metadata
* @return bool whether the table exists in the database
*/
protected function findColumns($table)
{
$tableName = $this->db->quoteValue($table->name);
$schemaName = $this->db->quoteValue($table->schemaName);
$orIdentity = '';
if (version_compare($this->db->serverVersion, '12.0', '>=')) {
$orIdentity = 'OR attidentity != \'\'';
}
$sql = <<<SQL
SELECT
d.nspname AS table_schema,
c.relname AS table_name,
a.attname AS column_name,
COALESCE(td.typname, tb.typname, t.typname) AS data_type,
COALESCE(td.typtype, tb.typtype, t.typtype) AS type_type,
(SELECT nspname FROM pg_namespace WHERE oid = COALESCE(td.typnamespace, tb.typnamespace, t.typnamespace)) AS type_scheme,
a.attlen AS character_maximum_length,
pg_catalog.col_description(c.oid, a.attnum) AS column_comment,
a.atttypmod AS modifier,
a.attnotnull = false AS is_nullable,
CAST(pg_get_expr(ad.adbin, ad.adrelid) AS varchar) AS column_default,
coalesce(pg_get_expr(ad.adbin, ad.adrelid) ~ 'nextval',false) {$orIdentity} AS is_autoinc,
pg_get_serial_sequence(quote_ident(d.nspname) || '.' || quote_ident(c.relname), a.attname) AS sequence_name,
CASE WHEN COALESCE(td.typtype, tb.typtype, t.typtype) = 'e'::char
THEN array_to_string((SELECT array_agg(enumlabel) FROM pg_enum WHERE enumtypid = COALESCE(td.oid, tb.oid, a.atttypid))::varchar[], ',')
ELSE NULL
END AS enum_values,
CASE atttypid
WHEN 21 /*int2*/ THEN 16
WHEN 23 /*int4*/ THEN 32
WHEN 20 /*int8*/ THEN 64
WHEN 1700 /*numeric*/ THEN
CASE WHEN atttypmod = -1
THEN null
ELSE ((atttypmod - 4) >> 16) & 65535
END
WHEN 700 /*float4*/ THEN 24 /*FLT_MANT_DIG*/
WHEN 701 /*float8*/ THEN 53 /*DBL_MANT_DIG*/
ELSE null
END AS numeric_precision,
CASE
WHEN atttypid IN (21, 23, 20) THEN 0
WHEN atttypid IN (1700) THEN
CASE
WHEN atttypmod = -1 THEN null
ELSE (atttypmod - 4) & 65535
END
ELSE null
END AS numeric_scale,
CAST(
information_schema._pg_char_max_length(information_schema._pg_truetypid(a, t), information_schema._pg_truetypmod(a, t))
AS numeric
) AS size,
a.attnum = any (ct.conkey) as is_pkey,
COALESCE(NULLIF(a.attndims, 0), NULLIF(t.typndims, 0), (t.typcategory='A')::int) AS dimension
FROM
pg_class c
LEFT JOIN pg_attribute a ON a.attrelid = c.oid
LEFT JOIN pg_attrdef ad ON a.attrelid = ad.adrelid AND a.attnum = ad.adnum
LEFT JOIN pg_type t ON a.atttypid = t.oid
LEFT JOIN pg_type tb ON (a.attndims > 0 OR t.typcategory='A') AND t.typelem > 0 AND t.typelem = tb.oid OR t.typbasetype > 0 AND t.typbasetype = tb.oid
LEFT JOIN pg_type td ON t.typndims > 0 AND t.typbasetype > 0 AND tb.typelem = td.oid
LEFT JOIN pg_namespace d ON d.oid = c.relnamespace
LEFT JOIN pg_constraint ct ON ct.conrelid = c.oid AND ct.contype = 'p'
WHERE
a.attnum > 0 AND t.typname != '' AND NOT a.attisdropped
AND c.relname = {$tableName}
AND d.nspname = {$schemaName}
ORDER BY
a.attnum;
SQL;
$columns = $this->db->createCommand($sql)->queryAll();
if (empty($columns)) {
return false;
}
foreach ($columns as $column) {
if ($this->db->slavePdo->getAttribute(\PDO::ATTR_CASE) === \PDO::CASE_UPPER) {
$column = array_change_key_case($column, CASE_LOWER);
}
$column = $this->loadColumnSchema($column);
$table->columns[$column->name] = $column;
if ($column->isPrimaryKey) {
$table->primaryKey[] = $column->name;
if ($table->sequenceName === null) {
$table->sequenceName = $column->sequenceName;
}
$column->defaultValue = null;
} elseif ($column->defaultValue) {
if (
in_array($column->type, [self::TYPE_TIMESTAMP, self::TYPE_DATE, self::TYPE_TIME], true) &&
in_array(
strtoupper($column->defaultValue),
['NOW()', 'CURRENT_TIMESTAMP', 'CURRENT_DATE', 'CURRENT_TIME'],
true
)
) {
$column->defaultValue = new Expression($column->defaultValue);
} elseif ($column->type === 'boolean') {
$column->defaultValue = ($column->defaultValue === 'true');
} elseif (preg_match("/^B'(.*?)'::/", $column->defaultValue, $matches)) {
$column->defaultValue = bindec($matches[1]);
} elseif (preg_match("/^'(\d+)'::\"bit\"$/", $column->defaultValue, $matches)) {
$column->defaultValue = bindec($matches[1]);
} elseif (preg_match("/^'(.*?)'::/", $column->defaultValue, $matches)) {
$column->defaultValue = $column->phpTypecast($matches[1]);
} elseif (preg_match('/^(\()?(.*?)(?(1)\))(?:::.+)?$/', $column->defaultValue, $matches)) {
if ($matches[2] === 'NULL') {
$column->defaultValue = null;
} else {
$column->defaultValue = $column->phpTypecast($matches[2]);
}
} else {
$column->defaultValue = $column->phpTypecast($column->defaultValue);
}
}
}
return true;
}
/**
* Loads the column information into a [[ColumnSchema]] object.
* @param array $info column information
* @return ColumnSchema the column schema object
*/
protected function loadColumnSchema($info)
{
/** @var ColumnSchema $column */
$column = $this->createColumnSchema();
$column->allowNull = $info['is_nullable'];
$column->autoIncrement = $info['is_autoinc'];
$column->comment = $info['column_comment'];
if ($info['type_scheme'] !== null && !in_array($info['type_scheme'], [$this->defaultSchema, 'pg_catalog'], true)) {
$column->dbType = $info['type_scheme'] . '.' . $info['data_type'];
} else {
$column->dbType = $info['data_type'];
}
$column->defaultValue = $info['column_default'];
$column->enumValues = ($info['enum_values'] !== null) ? explode(',', str_replace(["''"], ["'"], $info['enum_values'])) : null;
$column->unsigned = false; // has no meaning in PG
$column->isPrimaryKey = $info['is_pkey'];
$column->name = $info['column_name'];
$column->precision = $info['numeric_precision'];
$column->scale = $info['numeric_scale'];
$column->size = $info['size'] === null ? null : (int) $info['size'];
$column->dimension = (int) $info['dimension'];
// pg_get_serial_sequence() doesn't track DEFAULT value change. GENERATED BY IDENTITY columns always have null default value
if (isset($column->defaultValue) && preg_match("/nextval\\('\"?\\w+\"?\.?\"?\\w+\"?'(::regclass)?\\)/", $column->defaultValue) === 1) {
$column->sequenceName = preg_replace(['/nextval/', '/::/', '/regclass/', '/\'\)/', '/\(\'/'], '', $column->defaultValue);
} elseif (isset($info['sequence_name'])) {
$column->sequenceName = $this->resolveTableName($info['sequence_name'])->fullName;
}
if (isset($this->typeMap[$column->dbType])) {
$column->type = $this->typeMap[$column->dbType];
} else {
$column->type = self::TYPE_STRING;
}
$column->phpType = $this->getColumnPhpType($column);
return $column;
}
/**
* {@inheritdoc}
*/
public function insert($table, $columns)
{
$params = [];
$sql = $this->db->getQueryBuilder()->insert($table, $columns, $params);
$returnColumns = $this->getTableSchema($table)->primaryKey;
if (!empty($returnColumns)) {
$returning = [];
foreach ((array) $returnColumns as $name) {
$returning[] = $this->quoteColumnName($name);
}
$sql .= ' RETURNING ' . implode(', ', $returning);
}
$command = $this->db->createCommand($sql, $params);
$command->prepare(false);
$result = $command->queryOne();
return !$command->pdoStatement->rowCount() ? false : $result;
}
/**
* Loads multiple types of constraints and returns the specified ones.
* @param string $tableName table name.
* @param string $returnType return type:
* - primaryKey
* - foreignKeys
* - uniques
* - checks
* @return mixed constraints.
*/
private function loadTableConstraints($tableName, $returnType)
{
static $sql = <<<'SQL'
SELECT
"c"."conname" AS "name",
"a"."attname" AS "column_name",
"c"."contype" AS "type",
"ftcns"."nspname" AS "foreign_table_schema",
"ftc"."relname" AS "foreign_table_name",
"fa"."attname" AS "foreign_column_name",
"c"."confupdtype" AS "on_update",
"c"."confdeltype" AS "on_delete",
pg_get_constraintdef("c"."oid") AS "check_expr"
FROM "pg_class" AS "tc"
INNER JOIN "pg_namespace" AS "tcns"
ON "tcns"."oid" = "tc"."relnamespace"
INNER JOIN "pg_constraint" AS "c"
ON "c"."conrelid" = "tc"."oid"
INNER JOIN "pg_attribute" AS "a"
ON "a"."attrelid" = "c"."conrelid" AND "a"."attnum" = ANY ("c"."conkey")
LEFT JOIN "pg_class" AS "ftc"
ON "ftc"."oid" = "c"."confrelid"
LEFT JOIN "pg_namespace" AS "ftcns"
ON "ftcns"."oid" = "ftc"."relnamespace"
LEFT JOIN "pg_attribute" "fa"
ON "fa"."attrelid" = "c"."confrelid" AND "fa"."attnum" = ANY ("c"."confkey")
WHERE "tcns"."nspname" = :schemaName AND "tc"."relname" = :tableName
ORDER BY "a"."attnum" ASC, "fa"."attnum" ASC
SQL;
static $actionTypes = [
'a' => 'NO ACTION',
'r' => 'RESTRICT',
'c' => 'CASCADE',
'n' => 'SET NULL',
'd' => 'SET DEFAULT',
];
$resolvedName = $this->resolveTableName($tableName);
$constraints = $this->db->createCommand($sql, [
':schemaName' => $resolvedName->schemaName,
':tableName' => $resolvedName->name,
])->queryAll();
$constraints = $this->normalizePdoRowKeyCase($constraints, true);
$constraints = ArrayHelper::index($constraints, null, ['type', 'name']);
$result = [
'primaryKey' => null,
'foreignKeys' => [],
'uniques' => [],
'checks' => [],
];
foreach ($constraints as $type => $names) {
foreach ($names as $name => $constraint) {
switch ($type) {
case 'p':
$result['primaryKey'] = new Constraint([
'name' => $name,
'columnNames' => ArrayHelper::getColumn($constraint, 'column_name'),
]);
break;
case 'f':
$result['foreignKeys'][] = new ForeignKeyConstraint([
'name' => $name,
'columnNames' => array_keys(array_count_values(ArrayHelper::getColumn($constraint, 'column_name'))),
'foreignSchemaName' => $constraint[0]['foreign_table_schema'],
'foreignTableName' => $constraint[0]['foreign_table_name'],
'foreignColumnNames' => array_keys(array_count_values(ArrayHelper::getColumn($constraint, 'foreign_column_name'))),
'onDelete' => isset($actionTypes[$constraint[0]['on_delete']]) ? $actionTypes[$constraint[0]['on_delete']] : null,
'onUpdate' => isset($actionTypes[$constraint[0]['on_update']]) ? $actionTypes[$constraint[0]['on_update']] : null,
]);
break;
case 'u':
$result['uniques'][] = new Constraint([
'name' => $name,
'columnNames' => ArrayHelper::getColumn($constraint, 'column_name'),
]);
break;
case 'c':
$result['checks'][] = new CheckConstraint([
'name' => $name,
'columnNames' => ArrayHelper::getColumn($constraint, 'column_name'),
'expression' => $constraint[0]['check_expr'],
]);
break;
}
}
}
foreach ($result as $type => $data) {
$this->setTableMetadata($tableName, $type, $data);
}
return $result[$returnType];
}
}