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1a74b3d4f8
* Php Inspections (EA Ultimate): use type casting where applicable * Php Inspections (EA Ultimate): use constants where applicable * Php Inspections (EA Ultimate): CS * Php Inspections (EA Ultimate): address some of one-time used variables * Php Inspections (EA Ultimate): address some of performance-related findings * Php Inspections (EA Ultimate): address some of performance-related findings * Php Inspections (EA Ultimate): revert a constant usage * Php Inspections (EA Ultimate): revert sequential assignments * Php Inspections (EA Ultimate): build is green again * Php Inspections (EA Ultimate): revert array_merge tweaks * Php Inspections (EA Ultimate): revert BC-incompatible one-time used variable tweak * Update description [skip ci] * Php Inspections (EA Ultimate): CS
725 lines
25 KiB
PHP
725 lines
25 KiB
PHP
<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\db\pgsql;
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use yii\base\NotSupportedException;
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use yii\db\CheckConstraint;
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use yii\db\Constraint;
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use yii\db\ConstraintFinderInterface;
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use yii\db\ConstraintFinderTrait;
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use yii\db\Expression;
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use yii\db\ForeignKeyConstraint;
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use yii\db\IndexConstraint;
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use yii\db\TableSchema;
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use yii\db\ViewFinderTrait;
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use yii\helpers\ArrayHelper;
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/**
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* Schema is the class for retrieving metadata from a PostgreSQL database
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* (version 9.x and above).
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*
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* @author Gevik Babakhani <gevikb@gmail.com>
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* @since 2.0
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*/
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class Schema extends \yii\db\Schema implements ConstraintFinderInterface
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{
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use ViewFinderTrait;
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use ConstraintFinderTrait;
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const TYPE_JSONB = 'jsonb';
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/**
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* @var string the default schema used for the current session.
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*/
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public $defaultSchema = 'public';
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/**
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* {@inheritdoc}
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*/
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public $columnSchemaClass = 'yii\db\pgsql\ColumnSchema';
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/**
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* @var array mapping from physical column types (keys) to abstract
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* column types (values)
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* @see http://www.postgresql.org/docs/current/static/datatype.html#DATATYPE-TABLE
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*/
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public $typeMap = [
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'bit' => self::TYPE_INTEGER,
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'bit varying' => self::TYPE_INTEGER,
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'varbit' => self::TYPE_INTEGER,
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'bool' => self::TYPE_BOOLEAN,
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'boolean' => self::TYPE_BOOLEAN,
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'box' => self::TYPE_STRING,
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'circle' => self::TYPE_STRING,
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'point' => self::TYPE_STRING,
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'line' => self::TYPE_STRING,
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'lseg' => self::TYPE_STRING,
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'polygon' => self::TYPE_STRING,
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'path' => self::TYPE_STRING,
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'character' => self::TYPE_CHAR,
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'char' => self::TYPE_CHAR,
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'bpchar' => self::TYPE_CHAR,
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'character varying' => self::TYPE_STRING,
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'varchar' => self::TYPE_STRING,
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'text' => self::TYPE_TEXT,
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'bytea' => self::TYPE_BINARY,
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'cidr' => self::TYPE_STRING,
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'inet' => self::TYPE_STRING,
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'macaddr' => self::TYPE_STRING,
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'real' => self::TYPE_FLOAT,
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'float4' => self::TYPE_FLOAT,
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'double precision' => self::TYPE_DOUBLE,
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'float8' => self::TYPE_DOUBLE,
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'decimal' => self::TYPE_DECIMAL,
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'numeric' => self::TYPE_DECIMAL,
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'money' => self::TYPE_MONEY,
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'smallint' => self::TYPE_SMALLINT,
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'int2' => self::TYPE_SMALLINT,
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'int4' => self::TYPE_INTEGER,
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'int' => self::TYPE_INTEGER,
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'integer' => self::TYPE_INTEGER,
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'bigint' => self::TYPE_BIGINT,
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'int8' => self::TYPE_BIGINT,
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'oid' => self::TYPE_BIGINT, // should not be used. it's pg internal!
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'smallserial' => self::TYPE_SMALLINT,
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'serial2' => self::TYPE_SMALLINT,
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'serial4' => self::TYPE_INTEGER,
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'serial' => self::TYPE_INTEGER,
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'bigserial' => self::TYPE_BIGINT,
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'serial8' => self::TYPE_BIGINT,
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'pg_lsn' => self::TYPE_BIGINT,
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'date' => self::TYPE_DATE,
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'interval' => self::TYPE_STRING,
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'time without time zone' => self::TYPE_TIME,
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'time' => self::TYPE_TIME,
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'time with time zone' => self::TYPE_TIME,
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'timetz' => self::TYPE_TIME,
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'timestamp without time zone' => self::TYPE_TIMESTAMP,
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'timestamp' => self::TYPE_TIMESTAMP,
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'timestamp with time zone' => self::TYPE_TIMESTAMP,
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'timestamptz' => self::TYPE_TIMESTAMP,
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'abstime' => self::TYPE_TIMESTAMP,
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'tsquery' => self::TYPE_STRING,
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'tsvector' => self::TYPE_STRING,
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'txid_snapshot' => self::TYPE_STRING,
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'unknown' => self::TYPE_STRING,
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'uuid' => self::TYPE_STRING,
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'json' => self::TYPE_JSON,
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'jsonb' => self::TYPE_JSON,
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'xml' => self::TYPE_STRING,
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];
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/**
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* {@inheritdoc}
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*/
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protected $tableQuoteCharacter = '"';
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/**
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* {@inheritdoc}
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*/
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protected function resolveTableName($name)
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{
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$resolvedName = new TableSchema();
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$parts = explode('.', str_replace('"', '', $name));
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if (isset($parts[1])) {
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$resolvedName->schemaName = $parts[0];
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$resolvedName->name = $parts[1];
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} else {
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$resolvedName->schemaName = $this->defaultSchema;
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$resolvedName->name = $name;
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}
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$resolvedName->fullName = ($resolvedName->schemaName !== $this->defaultSchema ? $resolvedName->schemaName . '.' : '') . $resolvedName->name;
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return $resolvedName;
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}
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/**
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* {@inheritdoc}
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*/
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protected function findSchemaNames()
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{
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static $sql = <<<'SQL'
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SELECT "ns"."nspname"
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FROM "pg_namespace" AS "ns"
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WHERE "ns"."nspname" != 'information_schema' AND "ns"."nspname" NOT LIKE 'pg_%'
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ORDER BY "ns"."nspname" ASC
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SQL;
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return $this->db->createCommand($sql)->queryColumn();
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}
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/**
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* {@inheritdoc}
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*/
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protected function findTableNames($schema = '')
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{
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if ($schema === '') {
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$schema = $this->defaultSchema;
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}
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$sql = <<<'SQL'
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SELECT c.relname AS table_name
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FROM pg_class c
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INNER JOIN pg_namespace ns ON ns.oid = c.relnamespace
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WHERE ns.nspname = :schemaName AND c.relkind IN ('r','v','m','f')
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ORDER BY c.relname
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SQL;
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return $this->db->createCommand($sql, [':schemaName' => $schema])->queryColumn();
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}
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/**
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* {@inheritdoc}
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*/
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protected function loadTableSchema($name)
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{
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$table = new TableSchema();
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$this->resolveTableNames($table, $name);
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if ($this->findColumns($table)) {
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$this->findConstraints($table);
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return $table;
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}
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return null;
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}
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/**
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* {@inheritdoc}
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*/
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protected function loadTablePrimaryKey($tableName)
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{
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return $this->loadTableConstraints($tableName, 'primaryKey');
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}
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/**
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* {@inheritdoc}
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*/
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protected function loadTableForeignKeys($tableName)
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{
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return $this->loadTableConstraints($tableName, 'foreignKeys');
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}
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/**
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* {@inheritdoc}
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*/
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protected function loadTableIndexes($tableName)
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{
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static $sql = <<<'SQL'
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SELECT
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"ic"."relname" AS "name",
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"ia"."attname" AS "column_name",
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"i"."indisunique" AS "index_is_unique",
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"i"."indisprimary" AS "index_is_primary"
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FROM "pg_class" AS "tc"
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INNER JOIN "pg_namespace" AS "tcns"
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ON "tcns"."oid" = "tc"."relnamespace"
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INNER JOIN "pg_index" AS "i"
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ON "i"."indrelid" = "tc"."oid"
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INNER JOIN "pg_class" AS "ic"
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ON "ic"."oid" = "i"."indexrelid"
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INNER JOIN "pg_attribute" AS "ia"
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ON "ia"."attrelid" = "i"."indrelid" AND "ia"."attnum" = ANY ("i"."indkey")
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WHERE "tcns"."nspname" = :schemaName AND "tc"."relname" = :tableName
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ORDER BY "ia"."attnum" ASC
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SQL;
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$resolvedName = $this->resolveTableName($tableName);
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$indexes = $this->db->createCommand($sql, [
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':schemaName' => $resolvedName->schemaName,
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':tableName' => $resolvedName->name,
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])->queryAll();
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$indexes = $this->normalizePdoRowKeyCase($indexes, true);
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$indexes = ArrayHelper::index($indexes, null, 'name');
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$result = [];
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foreach ($indexes as $name => $index) {
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$result[] = new IndexConstraint([
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'isPrimary' => (bool) $index[0]['index_is_primary'],
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'isUnique' => (bool) $index[0]['index_is_unique'],
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'name' => $name,
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'columnNames' => ArrayHelper::getColumn($index, 'column_name'),
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]);
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}
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return $result;
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}
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/**
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* {@inheritdoc}
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*/
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protected function loadTableUniques($tableName)
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{
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return $this->loadTableConstraints($tableName, 'uniques');
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}
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/**
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* {@inheritdoc}
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*/
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protected function loadTableChecks($tableName)
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{
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return $this->loadTableConstraints($tableName, 'checks');
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}
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/**
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* {@inheritdoc}
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* @throws NotSupportedException if this method is called.
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*/
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protected function loadTableDefaultValues($tableName)
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{
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throw new NotSupportedException('PostgreSQL does not support default value constraints.');
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}
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/**
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* Creates a query builder for the PostgreSQL database.
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* @return QueryBuilder query builder instance
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*/
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public function createQueryBuilder()
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{
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return new QueryBuilder($this->db);
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}
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/**
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* Resolves the table name and schema name (if any).
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* @param TableSchema $table the table metadata object
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* @param string $name the table name
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*/
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protected function resolveTableNames($table, $name)
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{
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$parts = explode('.', str_replace('"', '', $name));
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if (isset($parts[1])) {
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$table->schemaName = $parts[0];
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$table->name = $parts[1];
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} else {
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$table->schemaName = $this->defaultSchema;
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$table->name = $parts[0];
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}
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$table->fullName = $table->schemaName !== $this->defaultSchema ? $table->schemaName . '.' . $table->name : $table->name;
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}
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/**
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* {@inheritdoc]
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*/
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protected function findViewNames($schema = '')
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{
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if ($schema === '') {
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$schema = $this->defaultSchema;
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}
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$sql = <<<'SQL'
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SELECT c.relname AS table_name
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FROM pg_class c
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INNER JOIN pg_namespace ns ON ns.oid = c.relnamespace
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WHERE ns.nspname = :schemaName AND (c.relkind = 'v' OR c.relkind = 'm')
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ORDER BY c.relname
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SQL;
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return $this->db->createCommand($sql, [':schemaName' => $schema])->queryColumn();
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}
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/**
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* Collects the foreign key column details for the given table.
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* @param TableSchema $table the table metadata
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*/
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protected function findConstraints($table)
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{
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$tableName = $this->quoteValue($table->name);
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$tableSchema = $this->quoteValue($table->schemaName);
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//We need to extract the constraints de hard way since:
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//http://www.postgresql.org/message-id/26677.1086673982@sss.pgh.pa.us
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$sql = <<<SQL
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select
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ct.conname as constraint_name,
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a.attname as column_name,
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fc.relname as foreign_table_name,
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fns.nspname as foreign_table_schema,
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fa.attname as foreign_column_name
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from
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(SELECT ct.conname, ct.conrelid, ct.confrelid, ct.conkey, ct.contype, ct.confkey, generate_subscripts(ct.conkey, 1) AS s
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FROM pg_constraint ct
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) AS ct
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inner join pg_class c on c.oid=ct.conrelid
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inner join pg_namespace ns on c.relnamespace=ns.oid
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inner join pg_attribute a on a.attrelid=ct.conrelid and a.attnum = ct.conkey[ct.s]
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left join pg_class fc on fc.oid=ct.confrelid
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left join pg_namespace fns on fc.relnamespace=fns.oid
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left join pg_attribute fa on fa.attrelid=ct.confrelid and fa.attnum = ct.confkey[ct.s]
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where
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ct.contype='f'
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and c.relname={$tableName}
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and ns.nspname={$tableSchema}
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order by
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fns.nspname, fc.relname, a.attnum
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SQL;
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$constraints = [];
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foreach ($this->db->createCommand($sql)->queryAll() as $constraint) {
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if ($this->db->slavePdo->getAttribute(\PDO::ATTR_CASE) === \PDO::CASE_UPPER) {
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$constraint = array_change_key_case($constraint, CASE_LOWER);
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}
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if ($constraint['foreign_table_schema'] !== $this->defaultSchema) {
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$foreignTable = $constraint['foreign_table_schema'] . '.' . $constraint['foreign_table_name'];
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} else {
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$foreignTable = $constraint['foreign_table_name'];
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}
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$name = $constraint['constraint_name'];
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if (!isset($constraints[$name])) {
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$constraints[$name] = [
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'tableName' => $foreignTable,
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'columns' => [],
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];
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}
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$constraints[$name]['columns'][$constraint['column_name']] = $constraint['foreign_column_name'];
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}
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foreach ($constraints as $name => $constraint) {
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$table->foreignKeys[$name] = array_merge([$constraint['tableName']], $constraint['columns']);
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}
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}
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/**
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* Gets information about given table unique indexes.
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* @param TableSchema $table the table metadata
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* @return array with index and column names
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*/
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protected function getUniqueIndexInformation($table)
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{
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$sql = <<<'SQL'
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SELECT
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i.relname as indexname,
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pg_get_indexdef(idx.indexrelid, k + 1, TRUE) AS columnname
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FROM (
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SELECT *, generate_subscripts(indkey, 1) AS k
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FROM pg_index
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) idx
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INNER JOIN pg_class i ON i.oid = idx.indexrelid
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INNER JOIN pg_class c ON c.oid = idx.indrelid
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INNER JOIN pg_namespace ns ON c.relnamespace = ns.oid
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WHERE idx.indisprimary = FALSE AND idx.indisunique = TRUE
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AND c.relname = :tableName AND ns.nspname = :schemaName
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ORDER BY i.relname, k
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SQL;
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return $this->db->createCommand($sql, [
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':schemaName' => $table->schemaName,
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':tableName' => $table->name,
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])->queryAll();
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}
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/**
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* Returns all unique indexes for the given table.
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*
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* Each array element is of the following structure:
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*
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* ```php
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* [
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* 'IndexName1' => ['col1' [, ...]],
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* 'IndexName2' => ['col2' [, ...]],
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* ]
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* ```
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*
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* @param TableSchema $table the table metadata
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* @return array all unique indexes for the given table.
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*/
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public function findUniqueIndexes($table)
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{
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$uniqueIndexes = [];
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foreach ($this->getUniqueIndexInformation($table) as $row) {
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if ($this->db->slavePdo->getAttribute(\PDO::ATTR_CASE) === \PDO::CASE_UPPER) {
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$row = array_change_key_case($row, CASE_LOWER);
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}
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$column = $row['columnname'];
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if (!empty($column) && $column[0] === '"') {
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// postgres will quote names that are not lowercase-only
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// https://github.com/yiisoft/yii2/issues/10613
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$column = substr($column, 1, -1);
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}
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$uniqueIndexes[$row['indexname']][] = $column;
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}
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return $uniqueIndexes;
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}
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/**
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* Collects the metadata of table columns.
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* @param TableSchema $table the table metadata
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* @return bool whether the table exists in the database
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*/
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protected function findColumns($table)
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{
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$tableName = $this->db->quoteValue($table->name);
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$schemaName = $this->db->quoteValue($table->schemaName);
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$sql = <<<SQL
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SELECT
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d.nspname AS table_schema,
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c.relname AS table_name,
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a.attname AS column_name,
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COALESCE(td.typname, tb.typname, t.typname) AS data_type,
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COALESCE(td.typtype, tb.typtype, t.typtype) AS type_type,
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a.attlen AS character_maximum_length,
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pg_catalog.col_description(c.oid, a.attnum) AS column_comment,
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a.atttypmod AS modifier,
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a.attnotnull = false AS is_nullable,
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CAST(pg_get_expr(ad.adbin, ad.adrelid) AS varchar) AS column_default,
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coalesce(pg_get_expr(ad.adbin, ad.adrelid) ~ 'nextval',false) AS is_autoinc,
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CASE WHEN COALESCE(td.typtype, tb.typtype, t.typtype) = 'e'::char
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THEN array_to_string((SELECT array_agg(enumlabel) FROM pg_enum WHERE enumtypid = COALESCE(td.oid, tb.oid, a.atttypid))::varchar[], ',')
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ELSE NULL
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END AS enum_values,
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CASE atttypid
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WHEN 21 /*int2*/ THEN 16
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WHEN 23 /*int4*/ THEN 32
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WHEN 20 /*int8*/ THEN 64
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WHEN 1700 /*numeric*/ THEN
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CASE WHEN atttypmod = -1
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THEN null
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ELSE ((atttypmod - 4) >> 16) & 65535
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END
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|
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 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 && preg_match("/nextval\\('\"?\\w+\"?\.?\"?\\w+\"?'(::regclass)?\\)/", $column->defaultValue) === 1) {
|
|
$table->sequenceName = preg_replace(['/nextval/', '/::/', '/regclass/', '/\'\)/', '/\(\'/'], '', $column->defaultValue);
|
|
}
|
|
$column->defaultValue = null;
|
|
} elseif ($column->defaultValue) {
|
|
if ($column->type === 'timestamp' && $column->defaultValue === 'now()') {
|
|
$column->defaultValue = new Expression($column->defaultValue);
|
|
} elseif ($column->type === 'boolean') {
|
|
$column->defaultValue = ($column->defaultValue === 'true');
|
|
} elseif (strncasecmp($column->dbType, 'bit', 3) === 0 || strncasecmp($column->dbType, 'varbit', 6) === 0) {
|
|
$column->defaultValue = bindec(trim($column->defaultValue, 'B\''));
|
|
} 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'];
|
|
$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'];
|
|
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",
|
|
"c"."consrc" 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];
|
|
}
|
|
}
|