Module: Mongoid::Threaded

Relationships & Source Files
Namespace Children
Modules: `Lifecycle`
Defined in:	lib/mongoid/threaded.rb, lib/mongoid/threaded/lifecycle.rb

Overview

This module contains logic for easy access to objects that have a lifecycle on the current thread.

Constant Summary

ASSIGN =
# File 'lib/mongoid/threaded/lifecycle.rb', line 7
```
'assign'.freeze
```
AUTOSAVES_KEY =
# File 'lib/mongoid/threaded.rb', line 20
```
'[mongoid]:autosaves'
```
BIND =
# File 'lib/mongoid/threaded/lifecycle.rb', line 6
```
'bind'.freeze
```
BUILD =
# File 'lib/mongoid/threaded/lifecycle.rb', line 8
```
'build'.freeze
```
CLIENTS_KEY =

Constant for the key to store clients.

# File 'lib/mongoid/threaded.rb', line 12
```
'[mongoid]:clients'
```
CLIENT_OVERRIDE_KEY =

The key to override the client.

# File 'lib/mongoid/threaded.rb', line 15
```
'[mongoid]:client-override'
```
CREATE =
# File 'lib/mongoid/threaded/lifecycle.rb', line 10
```
'create'.freeze
```
CURRENT_SCOPE_KEY =

The key for the current thread’s scope stack.

# File 'lib/mongoid/threaded.rb', line 18
```
'[mongoid]:current-scope'
```
DATABASE_OVERRIDE_KEY =
# File 'lib/mongoid/threaded.rb', line 9
```
'[mongoid]:db-override'
```
EXECUTE_CALLBACKS =

The key storing the default value for whether or not callbacks are executed on documents.

# File 'lib/mongoid/threaded.rb', line 35
```
'[mongoid]:execute-callbacks'
```
LOAD =
# File 'lib/mongoid/threaded/lifecycle.rb', line 9
```
'load'.freeze
```
MODIFIED_DOCUMENTS_KEY =

The key for storing documents modified inside transactions.

# File 'lib/mongoid/threaded.rb', line 31
```
'[mongoid]:modified-documents'
```
SESSIONS_KEY =

The key for the current thread’s sessions.

# File 'lib/mongoid/threaded.rb', line 28
```
'[mongoid]:sessions'
```

STACK_KEYS =
# File 'lib/mongoid/threaded.rb', line 23

Hash.new do |hash, key|
  hash[key] = "[mongoid]:#{key}-stack"
end

VALIDATIONS_KEY =
# File 'lib/mongoid/threaded.rb', line 21
```
'[mongoid]:validations'
```

Instance Attribute Summary

#client_override ⇒ String | Symbol rw

Get the global client override.
#client_override=(name) ⇒ String | Symbol rw

::Set the global client override.
#database_override ⇒ String | Symbol rw

Get the global database override.
#database_override=(name) ⇒ String | Symbol rw

::Set the global database override.
#execute_callbacks=(flag) rw

Indicates whether document callbacks should be invoked by default for the current thread.
#execute_callbacks? ⇒ true | false rw

Queries whether document callbacks should be executed by default for the current thread.

Instance Method Summary

#add_modified_document(session, document)

Store a reference to the document that was modified inside a transaction associated with the session.
#autosaved?(document) ⇒ true | false

Is the document autosaved on the current thread?
#autosaves ⇒ Hash

Get all autosaves on the current thread.
#autosaves_for(klass) ⇒ Array

Get all autosaves on the current thread for the class.
#begin_autosave(document)

Begin autosaving a document on the current thread.
#begin_execution(name) ⇒ true

Begin entry into a named thread local stack.
#begin_validate(document)

Begin validating a document on the current thread.
#begin_without_default_scope(klass) Internal use only Internal use only

Begin suppressing default scopes for given model on the current thread.
#clear_modified_documents(session) ⇒ Set<Mongoid::Document>

Clears the set of modified documents for the given session, and return the content of the set before the clearance.
#clear_session(client: nil) ⇒ nil

Clear the cached session for this thread for a client.
#current_scope(klass = nil) ⇒ Criteria

Get the current ::Mongoid scope.
#current_scope=(scope) ⇒ Criteria

::Set the current ::Mongoid scope.
#executing?(name) ⇒ true

Are in the middle of executing the named stack.
#exit_autosave(document)

Exit autosaving a document on the current thread.
#exit_execution(name) ⇒ true

Exit from a named thread local stack.
#exit_validate(document)

Exit validating a document on the current thread.
#exit_without_default_scope(klass) Internal use only Internal use only

Exit suppressing default scopes for given model on the current thread.
#get_session(client: nil) ⇒ Mongo::Session | nil

Get the cached session for this thread for a client.
#modified_documents ⇒ Hash<Mongo::Session, Set<Mongoid::Document>> Internal use only Internal use only

Returns the thread store of modified documents.
#sessions ⇒ Hash<Integer, Set> Internal use only Internal use only

Returns the thread store of sessions.
#set_current_scope(scope, klass) ⇒ Criteria

::Set the current ::Mongoid scope.
#set_session(session, client: nil)

Cache a session for this thread for a client.
#stack(name) ⇒ Array

Get the named stack.
#validated?(document) ⇒ true | false

Is the document validated on the current thread?
#validations ⇒ Hash

Get all validations on the current thread.
#validations_for(klass) ⇒ Array

Get all validations on the current thread for the class.
#without_default_scope?(klass) ⇒ Boolean Internal use only Internal use only

Is the given klass’ default scope suppressed on the current thread?
#unset_current_scope(klass) private

Removes the given klass from the current scope, and tidies the current scope list.

Instance Attribute Details

#client_override ⇒ String | Symbol (rw)

Get the global client override.

Examples:

Get the global client override.

Threaded.client_override

Returns:

(String | Symbol) —

The override.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 179


def client_override
  Thread.current[CLIENT_OVERRIDE_KEY]
end

#client_override=(name) ⇒ String | Symbol (rw)

::Set the global client override.

Examples:

::Set the global client override.

Threaded.client_override = :testing

Parameters:

name (String | Symbol) —

The global override name.

Returns:

(String | Symbol) —

The override.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 191


def client_override=(name)
  Thread.current[CLIENT_OVERRIDE_KEY] = name
end

#database_override ⇒ String | Symbol (rw)

Get the global database override.

Examples:

Get the global database override.

Threaded.database_override

Returns:

(String | Symbol) —

The override.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 57


def database_override
  Thread.current[DATABASE_OVERRIDE_KEY]
end

#database_override=(name) ⇒ String | Symbol (rw)

::Set the global database override.

Examples:

::Set the global database override.

Threaded.database_override = :testing

Parameters:

name (String | Symbol) —

The global override name.

Returns:

(String | Symbol) —

The override.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 69


def database_override=(name)
  Thread.current[DATABASE_OVERRIDE_KEY] = name
end

#execute_callbacks=(flag) (rw)

Indicates whether document callbacks should be invoked by default for the current thread. Individual documents may further override the callback behavior, but this will be used for the default behavior.

Parameters:

flag (true | false) —

Whether or not document callbacks should be executed by default.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 406


def execute_callbacks=(flag)
  Thread.current[EXECUTE_CALLBACKS] = flag
end

#execute_callbacks? ⇒ `true` | `false` (rw)

Queries whether document callbacks should be executed by default for the current thread.

Unless otherwise indicated (by #execute_callbacks=), this will return true.

Returns:

(true | false) —

Whether or not document callbacks should be executed by default.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 392


def execute_callbacks?
  if Thread.current.key?(EXECUTE_CALLBACKS)
    Thread.current[EXECUTE_CALLBACKS]
  else
    true
  end
end

Instance Method Details

#add_modified_document(session, document)

Store a reference to the document that was modified inside a transaction associated with the session.

Parameters:

session (Mongo::Session) —

Session in scope of which the document was modified.
document (Mongoid::Document) —

::Mongoid document that was modified.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 365


def add_modified_document(session, document)
  return unless session&.in_transaction?

  modified_documents[session] << document
end

#autosaved?(document) ⇒ `true` | `false`

Is the document autosaved on the current thread?

Examples:

Is the document autosaved?

Threaded.autosaved?(doc)

Parameters:

document (Document) —

The document to check.

Returns:

(true | false) —

If the document is autosaved.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 264


def autosaved?(document)
  autosaves_for(document.class).include?(document._id)
end

#autosaves ⇒ Hash

Get all autosaves on the current thread.

Examples:

Get all autosaves.

Threaded.autosaves

Returns:

(Hash) —

The current autosaves.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 286


def autosaves
  Thread.current[AUTOSAVES_KEY] ||= {}
end

#autosaves_for(klass) ⇒ Array

Get all autosaves on the current thread for the class.

Examples:

Get all autosaves.

Threaded.autosaves_for(Person)

Parameters:

klass (Class) —

The class to check.

Returns:

(Array) —

The current autosaves.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 308


def autosaves_for(klass)
  autosaves[klass] ||= []
end

#begin_autosave(document)

Begin autosaving a document on the current thread.

Examples:

Begin autosave.

Threaded.begin_autosave(doc)

Parameters:

document (Document) —

The document to autosave.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 115


def begin_autosave(document)
  autosaves_for(document.class).push(document._id)
end

#begin_execution(name) ⇒ `true`

Begin entry into a named thread local stack.

Examples:

Begin entry into the stack.

Threaded.begin_execution(:create)

Parameters:

name (String) —

The name of the stack

Returns:

(true) —

True.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 47


def begin_execution(name)
  stack(name).push(true)
end

#begin_validate(document)

Begin validating a document on the current thread.

Examples:

Begin validation.

Threaded.begin_validate(doc)

Parameters:

document (Document) —

The document to validate.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 125


def begin_validate(document)
  validations_for(document.class).push(document._id)
end

#begin_without_default_scope(klass)

This method is for internal use only.

Begin suppressing default scopes for given model on the current thread.

Examples:

Begin without default scope stack.

Threaded.begin_without_default_scope(klass)

Parameters:

klass (Class) —

The model to suppress default scoping on.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 157


def begin_without_default_scope(klass)
  stack(:without_default_scope).push(klass)
end

#clear_modified_documents(session) ⇒ Set<Mongoid::Document>

Clears the set of modified documents for the given session, and return the content of the set before the clearance.

Parameters:

session (Mongo::Session) —

Session for which the modified documents set should be cleared.

Returns:

(Set<Mongoid::Document>) —

Collection of modified documents before it was cleared.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 378


def clear_modified_documents(session)
  modified_documents[session].dup
ensure
  modified_documents[session].clear
end

#clear_session(client: nil) ⇒ `nil`

Note:

For backward compatibility it is allowed to call this method without

Clear the cached session for this thread for a client.

specifying Mongoid#client parameter.

Parameters:

client (Mongo::Client | nil) —

The client to clear the session for.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 355


def clear_session(client: nil)
  sessions.delete(client)&.end_session
end

#current_scope(klass = nil) ⇒ Criteria

Get the current ::Mongoid scope.

Examples:

Get the scope.

Threaded.current_scope(klass)
Threaded.current_scope

Parameters:

klass (Klass) (defaults to: nil) —

The class type of the scope.

Returns:

(Criteria) —

The scope.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 204


def current_scope(klass = nil)
  if klass && Thread.current[CURRENT_SCOPE_KEY].respond_to?(:keys)
    Thread.current[CURRENT_SCOPE_KEY][
        Thread.current[CURRENT_SCOPE_KEY].keys.find { |k| k <= klass }
    ]
  else
    Thread.current[CURRENT_SCOPE_KEY]
  end
end

#current_scope=(scope) ⇒ Criteria

::Set the current ::Mongoid scope.

Examples:

::Set the scope.

Threaded.current_scope = scope

Parameters:

scope (Criteria) —

The current scope.

Returns:

(Criteria) —

The scope.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 222


def current_scope=(scope)
  Thread.current[CURRENT_SCOPE_KEY] = scope
end

#executing?(name) ⇒ `true`

Are in the middle of executing the named stack

Examples:

Are we in the stack execution?

Threaded.executing?(:create)

Parameters:

name (Symbol) —

The name of the stack

Returns:

(true) —

If the stack is being executed.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 81


def executing?(name)
  !stack(name).empty?
end

#exit_autosave(document)

Exit autosaving a document on the current thread.

Examples:

Exit autosave.

Threaded.exit_autosave(doc)

Parameters:

document (Document) —

The document to autosave.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 135


def exit_autosave(document)
  autosaves_for(document.class).delete_one(document._id)
end

#exit_execution(name) ⇒ `true`

Exit from a named thread local stack.

Examples:

Exit from the stack.

Threaded.exit_execution(:create)

Parameters:

name (Symbol) —

The name of the stack

Returns:

(true) —

True.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 93


def exit_execution(name)
  stack(name).pop
end

#exit_validate(document)

Exit validating a document on the current thread.

Examples:

Exit validation.

Threaded.exit_validate(doc)

Parameters:

document (Document) —

The document to validate.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 145


def exit_validate(document)
  validations_for(document.class).delete_one(document._id)
end

#exit_without_default_scope(klass)

This method is for internal use only.

Exit suppressing default scopes for given model on the current thread.

Examples:

Exit without default scope stack.

Threaded.exit_without_default_scope(klass)

Parameters:

klass (Class) —

The model to unsuppress default scoping on.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 169


def exit_without_default_scope(klass)
  stack(:without_default_scope).delete(klass)
end

#get_session(client: nil) ⇒ `Mongo::Session` | `nil`

Note:

For backward compatibility it is allowed to call this method without

Get the cached session for this thread for a client.

specifying Mongoid#client parameter.

Parameters:

client (Mongo::Client | nil) —

The client to cache the session for.

Returns:

(Mongo::Session | nil) —

The session cached on this thread or nil.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 343


def get_session(client: nil)
  sessions[client]
end

#modified_documents ⇒ Hash<`Mongo::Session`, Set<Mongoid::Document>>

This method is for internal use only.

Returns the thread store of modified documents.

Returns:

(Hash<Mongo::Session, Set<Mongoid::Document>>) —

The modified documents indexed by session.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 425


def modified_documents
  Thread.current[MODIFIED_DOCUMENTS_KEY] ||= Hash.new do |h, k|
    h[k] = Set.new
  end
end

#sessions ⇒ Hash<Integer, Set>

This method is for internal use only.

Returns the thread store of sessions.

Returns:

(Hash<Integer, Set>) —

The sessions indexed by client object ID.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 415


def sessions
  Thread.current[SESSIONS_KEY] ||= {}.compare_by_identity
end

#set_current_scope(scope, klass) ⇒ Criteria

::Set the current ::Mongoid scope. Safe for multi-model scope chaining.

Examples:

::Set the scope.

Threaded.current_scope(scope, klass)

Parameters:

scope (Criteria) —

The current scope.
klass (Class) —

The current model class.

Returns:

(Criteria) —

The scope.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 235


def set_current_scope(scope, klass)
  if scope.nil?
    unset_current_scope(klass)
  else
    Thread.current[CURRENT_SCOPE_KEY] ||= {}
    Thread.current[CURRENT_SCOPE_KEY][klass] = scope
  end
end

#set_session(session, client: nil)

Note:

For backward compatibility it is allowed to call this method without

Cache a session for this thread for a client.

specifying Mongoid#client parameter.

Parameters:

session (Mongo::Session) —

The session to save.
client (Mongo::Client | nil) —

The client to cache the session for.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 331


def set_session(session, client: nil)
  sessions[client] = session
end

#stack(name) ⇒ Array

Get the named stack.

Examples:

Get a stack by name

Threaded.stack(:create)

Parameters:

name (Symbol) —

The name of the stack

Returns:

(Array) —

The stack.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 105


def stack(name)
  Thread.current[STACK_KEYS[name]] ||= []
end

#unset_current_scope(klass) (private)

Removes the given klass from the current scope, and tidies the current scope list.

Parameters:

klass (Class) —

the class to remove from the current scope.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 437


def unset_current_scope(klass)
  return unless Thread.current[CURRENT_SCOPE_KEY]

  Thread.current[CURRENT_SCOPE_KEY].delete(klass)
  Thread.current[CURRENT_SCOPE_KEY] = nil if Thread.current[CURRENT_SCOPE_KEY].empty?
end

#validated?(document) ⇒ `true` | `false`

Is the document validated on the current thread?

Examples:

Is the document validated?

Threaded.validated?(doc)

Parameters:

document (Document) —

The document to check.

Returns:

(true | false) —

If the document is validated.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 276


def validated?(document)
  validations_for(document.class).include?(document._id)
end

#validations ⇒ Hash

Get all validations on the current thread.

Examples:

Get all validations.

Threaded.validations

Returns:

(Hash) —

The current validations.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 296


def validations
  Thread.current[VALIDATIONS_KEY] ||= {}
end

#validations_for(klass) ⇒ Array

Get all validations on the current thread for the class.

Examples:

Get all validations.

Threaded.validations_for(Person)

Parameters:

klass (Class) —

The class to check.

Returns:

(Array) —

The current validations.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 320


def validations_for(klass)
  validations[klass] ||= []
end

#without_default_scope?(klass) ⇒ Boolean

This method is for internal use only.

Is the given klass’ default scope suppressed on the current thread?

Examples:

Is the given klass’ default scope suppressed?

Threaded.without_default_scope?(klass)

Parameters:

klass (Class) —

The model to check for default scope suppression.

[ GitHub ]

# File 'lib/mongoid/threaded.rb', line 252


def without_default_scope?(klass)
  stack(:without_default_scope).include?(klass)
end

Module: Mongoid::Threaded

Overview

Constant Summary

Instance Attribute Summary

Instance Method Summary

Instance Attribute Details

#client_override ⇒ String | Symbol (rw)

#client_override=(name) ⇒ String | Symbol (rw)

#database_override ⇒ String | Symbol (rw)

#database_override=(name) ⇒ String | Symbol (rw)

#execute_callbacks=(flag) (rw)

#execute_callbacks? ⇒ true | false (rw)

Instance Method Details

#add_modified_document(session, document)

#autosaved?(document) ⇒ true | false

#autosaves ⇒ Hash

#autosaves_for(klass) ⇒ Array

#begin_autosave(document)

#begin_execution(name) ⇒ true

#begin_validate(document)

#begin_without_default_scope(klass)

#clear_modified_documents(session) ⇒ Set<Mongoid::Document>

#clear_session(client: nil) ⇒ nil

#current_scope(klass = nil) ⇒ Criteria

#current_scope=(scope) ⇒ Criteria

#executing?(name) ⇒ true

#exit_autosave(document)

#exit_execution(name) ⇒ true

#exit_validate(document)

#exit_without_default_scope(klass)

#get_session(client: nil) ⇒ Mongo::Session | nil

#modified_documents ⇒ Hash<Mongo::Session, Set<Mongoid::Document>>

#sessions ⇒ Hash<Integer, Set>

#set_current_scope(scope, klass) ⇒ Criteria

#set_session(session, client: nil)

#stack(name) ⇒ Array

#unset_current_scope(klass) (private)

#validated?(document) ⇒ true | false

#validations ⇒ Hash

#validations_for(klass) ⇒ Array

#without_default_scope?(klass) ⇒ Boolean

#execute_callbacks? ⇒ `true` | `false` (rw)

#autosaved?(document) ⇒ `true` | `false`

#begin_execution(name) ⇒ `true`

#clear_session(client: nil) ⇒ `nil`

#executing?(name) ⇒ `true`

#exit_execution(name) ⇒ `true`

#get_session(client: nil) ⇒ `Mongo::Session` | `nil`

#modified_documents ⇒ Hash<`Mongo::Session`, Set<Mongoid::Document>>

#validated?(document) ⇒ `true` | `false`