Schema

Represents a database schema, including tables, views, constraints, indexes, functions, triggers, and extensions.

class Schema extends \Hazaar\DBI\Manager\Struct

Provides methods for importing, applying migrations, and converting to migration objects.

Properties

extensions

public array $extensions

tables

public array $tables

views

public array $views

constraints

public array $constraints

indexes

public array $indexes

functions

public array $functions

triggers

public array $triggers

ignoreTables

private array $ignoreTables = array (
  0 => 'schema_version',
  1 => '__hz_file',
  2 => '__hz_file_chunk',
)

Methods

load

Load a schema from an array of versions.

public load(array $versions): self

Parameters

Parameter	Type	Description
$versions	array

import

Imports the current database schema using the provided adapter.

public import(Adapter $dbi): self

Gathers extensions, tables, constraints, indexes, functions, triggers, and views from the database.

Parameters

Parameter	Type	Description
$dbi	Adapter	the database adapter instance

applyVersion

Applies a migration version to the schema, updating its state.

public applyVersion(Version $version): void

Processes all actions in the version's 'up' event and applies them to the schema.

Parameters

Parameter	Type	Description
$version	Version	the migration version to apply

toMigration

Converts the schema to a Migration object representing the current state.

public toMigration(): Migration

Generates a migration with all extensions, tables, views, constraints, indexes, functions, and triggers.

findActionOrComponent

public findActionOrComponent(string $name, array $haystack): null

Parameters

Parameter	Type	Description
$name	string
$haystack	array

create

Creates a new element in the schema.

private create(Action $action): void

Parameters

Parameter	Type	Description
$action	Action	the action containing the specifications for the element to be created

alter

Alters an existing element in the schema based on the provided action.

private alter(Action $action): void

Updates the element with the new specification from the action.

Parameters

Parameter	Type	Description
$action	Action	the action containing the type and specifications for the element to alter

drop

Drops an element based on the provided action.

private drop(Action $action): void

Parameters

Parameter	Type	Description
$action	Action	the action containing the type and specifications for the element to drop

dropTableReferences

Drops all constraints or indexes that reference the specified table.

private dropTableReferences(array $elements, string $table): void

Parameters

Parameter	Type	Description
$elements	array	the array of constraints or indexes to search for references
$table	string

getElementName

Get the name of the element based on the action type.

private getElementName(ActionType $type): string

Parameters

Parameter	Type	Description
$type	ActionType	the type of action to get the element name for

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Generated by Hazaar API Doc Generator on Tue, 21 Apr 2026 04:00:24 +0000