www.gusucode.com > KPPW众包威客PHP开源建站系统 v3.0源码程序 > KPPW/vendor/laravel/framework/src/Illuminate/Database/Schema/Blueprint.php
<?php
namespace Illuminate\Database\Schema;
use Closure;
use Illuminate\Support\Fluent;
use Illuminate\Database\Connection;
use Illuminate\Database\Schema\Grammars\Grammar;
class Blueprint
{
/**
* The table the blueprint describes.
*
* @var string
*/
protected $table;
/**
* The columns that should be added to the table.
*
* @var array
*/
protected $columns = [];
/**
* The commands that should be run for the table.
*
* @var array
*/
protected $commands = [];
/**
* The storage engine that should be used for the table.
*
* @var string
*/
public $engine;
/**
* The default character set that should be used for the table.
*/
public $charset;
/**
* The collation that should be used for the table.
*/
public $collation;
/**
* Whether to make the table temporary.
*
* @var bool
*/
public $temporary = false;
/**
* Create a new schema blueprint.
*
* @param string $table
* @param \Closure|null $callback
* @return void
*/
public function __construct($table, Closure $callback = null)
{
$this->table = $table;
if (! is_null($callback)) {
$callback($this);
}
}
/**
* Execute the blueprint against the database.
*
* @param \Illuminate\Database\Connection $connection
* @param \Illuminate\Database\Schema\Grammars\Grammar $grammar
* @return void
*/
public function build(Connection $connection, Grammar $grammar)
{
foreach ($this->toSql($connection, $grammar) as $statement) {
$connection->statement($statement);
}
}
/**
* Get the raw SQL statements for the blueprint.
*
* @param \Illuminate\Database\Connection $connection
* @param \Illuminate\Database\Schema\Grammars\Grammar $grammar
* @return array
*/
public function toSql(Connection $connection, Grammar $grammar)
{
$this->addImpliedCommands();
$statements = [];
// Each type of command has a corresponding compiler function on the schema
// grammar which is used to build the necessary SQL statements to build
// the blueprint element, so we'll just call that compilers function.
foreach ($this->commands as $command) {
$method = 'compile'.ucfirst($command->name);
if (method_exists($grammar, $method)) {
if (! is_null($sql = $grammar->$method($this, $command, $connection))) {
$statements = array_merge($statements, (array) $sql);
}
}
}
return $statements;
}
/**
* Add the commands that are implied by the blueprint.
*
* @return void
*/
protected function addImpliedCommands()
{
if (count($this->getAddedColumns()) > 0 && ! $this->creating()) {
array_unshift($this->commands, $this->createCommand('add'));
}
if (count($this->getChangedColumns()) > 0 && ! $this->creating()) {
array_unshift($this->commands, $this->createCommand('change'));
}
$this->addFluentIndexes();
}
/**
* Add the index commands fluently specified on columns.
*
* @return void
*/
protected function addFluentIndexes()
{
foreach ($this->columns as $column) {
foreach (['primary', 'unique', 'index'] as $index) {
// If the index has been specified on the given column, but is simply
// equal to "true" (boolean), no name has been specified for this
// index, so we will simply call the index methods without one.
if ($column->$index === true) {
$this->$index($column->name);
continue 2;
}
// If the index has been specified on the column and it is something
// other than boolean true, we will assume a name was provided on
// the index specification, and pass in the name to the method.
elseif (isset($column->$index)) {
$this->$index($column->name, $column->$index);
continue 2;
}
}
}
}
/**
* Determine if the blueprint has a create command.
*
* @return bool
*/
protected function creating()
{
foreach ($this->commands as $command) {
if ($command->name == 'create') {
return true;
}
}
return false;
}
/**
* Indicate that the table needs to be created.
*
* @return \Illuminate\Support\Fluent
*/
public function create()
{
return $this->addCommand('create');
}
/**
* Indicate that the table needs to be temporary.
*
* @return void
*/
public function temporary()
{
$this->temporary = true;
}
/**
* Indicate that the table should be dropped.
*
* @return \Illuminate\Support\Fluent
*/
public function drop()
{
return $this->addCommand('drop');
}
/**
* Indicate that the table should be dropped if it exists.
*
* @return \Illuminate\Support\Fluent
*/
public function dropIfExists()
{
return $this->addCommand('dropIfExists');
}
/**
* Indicate that the given columns should be dropped.
*
* @param array|mixed $columns
* @return \Illuminate\Support\Fluent
*/
public function dropColumn($columns)
{
$columns = is_array($columns) ? $columns : (array) func_get_args();
return $this->addCommand('dropColumn', compact('columns'));
}
/**
* Indicate that the given columns should be renamed.
*
* @param string $from
* @param string $to
* @return \Illuminate\Support\Fluent
*/
public function renameColumn($from, $to)
{
return $this->addCommand('renameColumn', compact('from', 'to'));
}
/**
* Indicate that the given primary key should be dropped.
*
* @param string|array $index
* @return \Illuminate\Support\Fluent
*/
public function dropPrimary($index = null)
{
return $this->dropIndexCommand('dropPrimary', 'primary', $index);
}
/**
* Indicate that the given unique key should be dropped.
*
* @param string|array $index
* @return \Illuminate\Support\Fluent
*/
public function dropUnique($index)
{
return $this->dropIndexCommand('dropUnique', 'unique', $index);
}
/**
* Indicate that the given index should be dropped.
*
* @param string|array $index
* @return \Illuminate\Support\Fluent
*/
public function dropIndex($index)
{
return $this->dropIndexCommand('dropIndex', 'index', $index);
}
/**
* Indicate that the given foreign key should be dropped.
*
* @param string $index
* @return \Illuminate\Support\Fluent
*/
public function dropForeign($index)
{
return $this->dropIndexCommand('dropForeign', 'foreign', $index);
}
/**
* Indicate that the timestamp columns should be dropped.
*
* @return void
*/
public function dropTimestamps()
{
$this->dropColumn('created_at', 'updated_at');
}
/**
* Indicate that the timestamp columns should be dropped.
*
* @return void
*/
public function dropTimestampsTz()
{
$this->dropTimestamps();
}
/**
* Indicate that the soft delete column should be dropped.
*
* @return void
*/
public function dropSoftDeletes()
{
$this->dropColumn('deleted_at');
}
/**
* Indicate that the remember token column should be dropped.
*
* @return void
*/
public function dropRememberToken()
{
$this->dropColumn('remember_token');
}
/**
* Rename the table to a given name.
*
* @param string $to
* @return \Illuminate\Support\Fluent
*/
public function rename($to)
{
return $this->addCommand('rename', compact('to'));
}
/**
* Specify the primary key(s) for the table.
*
* @param string|array $columns
* @param string $name
* @return \Illuminate\Support\Fluent
*/
public function primary($columns, $name = null)
{
return $this->indexCommand('primary', $columns, $name);
}
/**
* Specify a unique index for the table.
*
* @param string|array $columns
* @param string $name
* @return \Illuminate\Support\Fluent
*/
public function unique($columns, $name = null)
{
return $this->indexCommand('unique', $columns, $name);
}
/**
* Specify an index for the table.
*
* @param string|array $columns
* @param string $name
* @return \Illuminate\Support\Fluent
*/
public function index($columns, $name = null)
{
return $this->indexCommand('index', $columns, $name);
}
/**
* Specify a foreign key for the table.
*
* @param string|array $columns
* @param string $name
* @return \Illuminate\Support\Fluent
*/
public function foreign($columns, $name = null)
{
return $this->indexCommand('foreign', $columns, $name);
}
/**
* Create a new auto-incrementing integer (4-byte) column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function increments($column)
{
return $this->unsignedInteger($column, true);
}
/**
* Create a new auto-incrementing small integer (2-byte) column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function smallIncrements($column)
{
return $this->unsignedSmallInteger($column, true);
}
/**
* Create a new auto-incrementing medium integer (3-byte) column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function mediumIncrements($column)
{
return $this->unsignedMediumInteger($column, true);
}
/**
* Create a new auto-incrementing big integer (8-byte) column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function bigIncrements($column)
{
return $this->unsignedBigInteger($column, true);
}
/**
* Create a new char column on the table.
*
* @param string $column
* @param int $length
* @return \Illuminate\Support\Fluent
*/
public function char($column, $length = 255)
{
return $this->addColumn('char', $column, compact('length'));
}
/**
* Create a new string column on the table.
*
* @param string $column
* @param int $length
* @return \Illuminate\Support\Fluent
*/
public function string($column, $length = 255)
{
return $this->addColumn('string', $column, compact('length'));
}
/**
* Create a new text column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function text($column)
{
return $this->addColumn('text', $column);
}
/**
* Create a new medium text column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function mediumText($column)
{
return $this->addColumn('mediumText', $column);
}
/**
* Create a new long text column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function longText($column)
{
return $this->addColumn('longText', $column);
}
/**
* Create a new integer (4-byte) column on the table.
*
* @param string $column
* @param bool $autoIncrement
* @param bool $unsigned
* @return \Illuminate\Support\Fluent
*/
public function integer($column, $autoIncrement = false, $unsigned = false)
{
return $this->addColumn('integer', $column, compact('autoIncrement', 'unsigned'));
}
/**
* Create a new tiny integer (1-byte) column on the table.
*
* @param string $column
* @param bool $autoIncrement
* @param bool $unsigned
* @return \Illuminate\Support\Fluent
*/
public function tinyInteger($column, $autoIncrement = false, $unsigned = false)
{
return $this->addColumn('tinyInteger', $column, compact('autoIncrement', 'unsigned'));
}
/**
* Create a new small integer (2-byte) column on the table.
*
* @param string $column
* @param bool $autoIncrement
* @param bool $unsigned
* @return \Illuminate\Support\Fluent
*/
public function smallInteger($column, $autoIncrement = false, $unsigned = false)
{
return $this->addColumn('smallInteger', $column, compact('autoIncrement', 'unsigned'));
}
/**
* Create a new medium integer (3-byte) column on the table.
*
* @param string $column
* @param bool $autoIncrement
* @param bool $unsigned
* @return \Illuminate\Support\Fluent
*/
public function mediumInteger($column, $autoIncrement = false, $unsigned = false)
{
return $this->addColumn('mediumInteger', $column, compact('autoIncrement', 'unsigned'));
}
/**
* Create a new big integer (8-byte) column on the table.
*
* @param string $column
* @param bool $autoIncrement
* @param bool $unsigned
* @return \Illuminate\Support\Fluent
*/
public function bigInteger($column, $autoIncrement = false, $unsigned = false)
{
return $this->addColumn('bigInteger', $column, compact('autoIncrement', 'unsigned'));
}
/**
* Create a new unsigned tiny integer (1-byte) column on the table.
*
* @param string $column
* @param bool $autoIncrement
* @return \Illuminate\Support\Fluent
*/
public function unsignedTinyInteger($column, $autoIncrement = false)
{
return $this->tinyInteger($column, $autoIncrement, true);
}
/**
* Create a new unsigned small integer (2-byte) column on the table.
*
* @param string $column
* @param bool $autoIncrement
* @return \Illuminate\Support\Fluent
*/
public function unsignedSmallInteger($column, $autoIncrement = false)
{
return $this->smallInteger($column, $autoIncrement, true);
}
/**
* Create a new unsigned medium integer (3-byte) column on the table.
*
* @param string $column
* @param bool $autoIncrement
* @return \Illuminate\Support\Fluent
*/
public function unsignedMediumInteger($column, $autoIncrement = false)
{
return $this->mediumInteger($column, $autoIncrement, true);
}
/**
* Create a new unsigned integer (4-byte) column on the table.
*
* @param string $column
* @param bool $autoIncrement
* @return \Illuminate\Support\Fluent
*/
public function unsignedInteger($column, $autoIncrement = false)
{
return $this->integer($column, $autoIncrement, true);
}
/**
* Create a new unsigned big integer (8-byte) column on the table.
*
* @param string $column
* @param bool $autoIncrement
* @return \Illuminate\Support\Fluent
*/
public function unsignedBigInteger($column, $autoIncrement = false)
{
return $this->bigInteger($column, $autoIncrement, true);
}
/**
* Create a new float column on the table.
*
* @param string $column
* @param int $total
* @param int $places
* @return \Illuminate\Support\Fluent
*/
public function float($column, $total = 8, $places = 2)
{
return $this->addColumn('float', $column, compact('total', 'places'));
}
/**
* Create a new double column on the table.
*
* @param string $column
* @param int|null $total
* @param int|null $places
* @return \Illuminate\Support\Fluent
*/
public function double($column, $total = null, $places = null)
{
return $this->addColumn('double', $column, compact('total', 'places'));
}
/**
* Create a new decimal column on the table.
*
* @param string $column
* @param int $total
* @param int $places
* @return \Illuminate\Support\Fluent
*/
public function decimal($column, $total = 8, $places = 2)
{
return $this->addColumn('decimal', $column, compact('total', 'places'));
}
/**
* Create a new boolean column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function boolean($column)
{
return $this->addColumn('boolean', $column);
}
/**
* Create a new enum column on the table.
*
* @param string $column
* @param array $allowed
* @return \Illuminate\Support\Fluent
*/
public function enum($column, array $allowed)
{
return $this->addColumn('enum', $column, compact('allowed'));
}
/**
* Create a new json column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function json($column)
{
return $this->addColumn('json', $column);
}
/**
* Create a new jsonb column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function jsonb($column)
{
return $this->addColumn('jsonb', $column);
}
/**
* Create a new date column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function date($column)
{
return $this->addColumn('date', $column);
}
/**
* Create a new date-time column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function dateTime($column)
{
return $this->addColumn('dateTime', $column);
}
/**
* Create a new date-time column (with time zone) on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function dateTimeTz($column)
{
return $this->addColumn('dateTimeTz', $column);
}
/**
* Create a new time column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function time($column)
{
return $this->addColumn('time', $column);
}
/**
* Create a new time column (with time zone) on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function timeTz($column)
{
return $this->addColumn('timeTz', $column);
}
/**
* Create a new timestamp column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function timestamp($column)
{
return $this->addColumn('timestamp', $column);
}
/**
* Create a new timestamp (with time zone) column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function timestampTz($column)
{
return $this->addColumn('timestampTz', $column);
}
/**
* Add nullable creation and update timestamps to the table.
*
* @return void
*/
public function nullableTimestamps()
{
$this->timestamp('created_at')->nullable();
$this->timestamp('updated_at')->nullable();
}
/**
* Add creation and update timestamps to the table.
*
* @return void
*/
public function timestamps()
{
$this->timestamp('created_at');
$this->timestamp('updated_at');
}
/**
* Add creation and update timestampTz columns to the table.
*
* @return void
*/
public function timestampsTz()
{
$this->timestampTz('created_at');
$this->timestampTz('updated_at');
}
/**
* Add a "deleted at" timestamp for the table.
*
* @return \Illuminate\Support\Fluent
*/
public function softDeletes()
{
return $this->timestamp('deleted_at')->nullable();
}
/**
* Create a new binary column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function binary($column)
{
return $this->addColumn('binary', $column);
}
/**
* Create a new uuid column on the table.
*
* @param string $column
* @return \Illuminate\Support\Fluent
*/
public function uuid($column)
{
return $this->addColumn('uuid', $column);
}
/**
* Add the proper columns for a polymorphic table.
*
* @param string $name
* @param string|null $indexName
* @return void
*/
public function morphs($name, $indexName = null)
{
$this->unsignedInteger("{$name}_id");
$this->string("{$name}_type");
$this->index(["{$name}_id", "{$name}_type"], $indexName);
}
/**
* Adds the `remember_token` column to the table.
*
* @return \Illuminate\Support\Fluent
*/
public function rememberToken()
{
return $this->string('remember_token', 100)->nullable();
}
/**
* Create a new drop index command on the blueprint.
*
* @param string $command
* @param string $type
* @param string|array $index
* @return \Illuminate\Support\Fluent
*/
protected function dropIndexCommand($command, $type, $index)
{
$columns = [];
// If the given "index" is actually an array of columns, the developer means
// to drop an index merely by specifying the columns involved without the
// conventional name, so we will build the index name from the columns.
if (is_array($index)) {
$columns = $index;
$index = $this->createIndexName($type, $columns);
}
return $this->indexCommand($command, $columns, $index);
}
/**
* Add a new index command to the blueprint.
*
* @param string $type
* @param string|array $columns
* @param string $index
* @return \Illuminate\Support\Fluent
*/
protected function indexCommand($type, $columns, $index)
{
$columns = (array) $columns;
// If no name was specified for this index, we will create one using a basic
// convention of the table name, followed by the columns, followed by an
// index type, such as primary or index, which makes the index unique.
if (is_null($index)) {
$index = $this->createIndexName($type, $columns);
}
return $this->addCommand($type, compact('index', 'columns'));
}
/**
* Create a default index name for the table.
*
* @param string $type
* @param array $columns
* @return string
*/
protected function createIndexName($type, array $columns)
{
$index = strtolower($this->table.'_'.implode('_', $columns).'_'.$type);
return str_replace(['-', '.'], '_', $index);
}
/**
* Add a new column to the blueprint.
*
* @param string $type
* @param string $name
* @param array $parameters
* @return \Illuminate\Support\Fluent
*/
public function addColumn($type, $name, array $parameters = [])
{
$attributes = array_merge(compact('type', 'name'), $parameters);
$this->columns[] = $column = new Fluent($attributes);
return $column;
}
/**
* Remove a column from the schema blueprint.
*
* @param string $name
* @return $this
*/
public function removeColumn($name)
{
$this->columns = array_values(array_filter($this->columns, function ($c) use ($name) {
return $c['attributes']['name'] != $name;
}));
return $this;
}
/**
* Add a new command to the blueprint.
*
* @param string $name
* @param array $parameters
* @return \Illuminate\Support\Fluent
*/
protected function addCommand($name, array $parameters = [])
{
$this->commands[] = $command = $this->createCommand($name, $parameters);
return $command;
}
/**
* Create a new Fluent command.
*
* @param string $name
* @param array $parameters
* @return \Illuminate\Support\Fluent
*/
protected function createCommand($name, array $parameters = [])
{
return new Fluent(array_merge(compact('name'), $parameters));
}
/**
* Get the table the blueprint describes.
*
* @return string
*/
public function getTable()
{
return $this->table;
}
/**
* Get the columns on the blueprint.
*
* @return array
*/
public function getColumns()
{
return $this->columns;
}
/**
* Get the commands on the blueprint.
*
* @return array
*/
public function getCommands()
{
return $this->commands;
}
/**
* Get the columns on the blueprint that should be added.
*
* @return array
*/
public function getAddedColumns()
{
return array_filter($this->columns, function ($column) {
return ! $column->change;
});
}
/**
* Get the columns on the blueprint that should be changed.
*
* @return array
*/
public function getChangedColumns()
{
return array_filter($this->columns, function ($column) {
return (bool) $column->change;
});
}
}