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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Db\Schema; |
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use Yiisoft\Db\Exception\InvalidArgumentException; |
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/** |
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* TableSchema represents the metadata of a database table. |
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* |
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* @property array $columnNames List of column names. This property is read-only. |
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*/ |
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abstract class TableSchema |
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{ |
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private ?string $schemaName = null; |
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private ?string $name = null; |
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private ?string $fullName = null; |
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private ?string $sequenceName = null; |
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private array $primaryKey = []; |
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private array $columns = []; |
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/** |
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* Gets the named column metadata. |
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* |
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* This is a convenient method for retrieving a named column even if it does not exist. |
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* |
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* @param string $name column name |
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* |
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* @return ColumnSchema metadata of the named column. Null if the named column does not exist. |
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*/ |
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public function getColumn(?string $name): ColumnSchema |
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{ |
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return $this->columns[$name] ?? null; |
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} |
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/** |
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* Returns the names of all columns in this table. |
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* |
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* @return array list of column names |
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*/ |
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public function getColumnNames() |
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{ |
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return \array_keys($this->columns); |
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} |
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/** |
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* Manually specifies the primary key for this table. |
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* |
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* @param string|array $keys the primary key (can be composite) |
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* |
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* @throws InvalidArgumentException if the specified key cannot be found in the table. |
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*/ |
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public function fixPrimaryKey($keys): void |
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{ |
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$keys = (array) $keys; |
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$this->primaryKey = $keys; |
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foreach ($this->columns as $column) { |
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$column->primaryKey(false); |
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} |
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foreach ($keys as $key) { |
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if (isset($this->columns[$key])) { |
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$this->columns[$key]->primaryKey(true); |
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} else { |
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throw new InvalidArgumentException("Primary key '$key' cannot be found in table '{$this->name}'."); |
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} |
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} |
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} |
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/** |
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* @return string|null the name of the schema that this table belongs to. |
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*/ |
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public function getSchemaName(): ?string |
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{ |
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return $this->schemaName; |
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} |
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/** |
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* @return string|null the name of this table. The schema name is not included. Use {@see fullName} to get the name |
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* with schema name prefix. |
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*/ |
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public function getName(): ?string |
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{ |
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return $this->name; |
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} |
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/** |
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* @return string|null the full name of this table, which includes the schema name prefix, if any. Note that if the |
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* schema name is the same as the {@see Schema::defaultSchema|default schema name}, the schema name will not be |
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* included. |
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*/ |
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public function getFullName(): ?string |
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{ |
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return $this->fullName; |
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} |
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/** |
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* @return string|null sequence name for the primary key. Null if no sequence. |
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*/ |
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public function getSequenceName(): ?string |
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{ |
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return $this->sequenceName; |
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} |
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/** |
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* @return array primary keys of this table. |
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*/ |
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public function getPrimaryKey(): array |
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{ |
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return $this->primaryKey; |
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} |
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/** |
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* @return ColumnSchema[] column metadata of this table. Each array element is a {@see ColumnSchema} object, indexed |
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* by column names. |
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*/ |
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public function getColumns(): array |
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{ |
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return $this->columns; |
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} |
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public function schemaName(?string $value): void |
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{ |
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$this->schemaName = $value; |
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} |
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public function name(?string $value): void |
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{ |
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$this->name = $value; |
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} |
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public function fullName(?string $value): void |
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{ |
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$this->fullName = $value; |
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} |
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public function sequenceName(?string $value): void |
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{ |
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$this->sequenceName = $value; |
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} |
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public function primaryKey(string $value): void |
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{ |
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$this->primaryKey[] = $value; |
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} |
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public function columns(string $index, ColumnSchema $value): void |
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{ |
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$this->columns[$index] = $value; |
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} |
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} |
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