Class MetaRowCollection

The 'Transaction Collection' class manages transaction-based collections. This class provides the ability to apply transaction queues to collections and manage changes.

Hierarchy (view full)

TransactionCollection
- MetaRowCollection

Constructors

constructor

new MetaRowCollection(owner): MetaRowCollection
The creator of the class 'MetaRowCollection'. This class provides a collection to manage 'MetaRow' objects.
Parameters
- owner: object
  Owner object of this collection.
Returns MetaRowCollection
Overrides TransactionCollection.constructor
- Defined in node_modules/logic-entity/types/en/collection-meta-row.d.ts:12

Properties

`Protected`_elemTypes

_elemTypes: any[]

Defines the type constraints for the collection element.

_guid

_guid: string

Unique identifier of the object (GUID). Uniquely identifies the object.

`Readonly`_list

_list: any[]

An array that stores a list of elements in a collection. This array contains actual data from the collection.

`Protected`_owner

_owner: object

Owned object of the collection.

_transQueue

_transQueue: TransactionQueue

The object that manages the transaction queue. This queue is used to process transaction operations sequentially.

_type

_type: Function

The generator function of the object. The function used when the object was created.

autoChanges

autoChanges: boolean

Indicates whether the automatic change feature is enabled. The default is set to 'false', and automatically sets whether or not the changes are applied.

`Readonly`count

count: number

Returns the number of elements in the current collection.

hasChanges

hasChanges: boolean

Indicates whether the collection has been changed. 'True' means that there are changes to the collection.

`Readonly`length

length: number

Returns the number of elements in the current collection.

`Static` `Readonly`_NS

_NS: string

Indicates the namespace.

Default

'Meta'

`Static` `Readonly`_PARAM

_PARAM: []

List of parameters used for the constructor.

`Static` `Readonly`_UNION

_UNION: []

List of implemented interfaces.

Default

[IObject, IMarshal]

Methods

_getPropDescriptor

_getPropDescriptor(idx): PropertyDescriptor
Gets the property descriptor for the specified index.
Parameters
- idx: number
  Index to get the property technician.
Returns PropertyDescriptor
Property technician for the specified index.
Overrides TransactionCollection._getPropDescriptor
- Defined in node_modules/logic-entity/types/en/collection-meta-row.d.ts:20

_onAdd

_onAdd(idx, elem): void
Generates an 'onAdd' event.
Parameters
- idx: number
  Index of the element to be added.
- elem: any
  The element to add.
Returns void
Listens
BaseCollection#onAdd
Inherited from TransactionCollection._onAdd
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:229

_onAdded

_onAdded(idx, elem): void
Generates an 'onAdd' event.
Parameters
- idx: number
  Index of added elements.
- elem: any
  Added element.
Returns void
Listens
BaseCollection#onAdded
Inherited from TransactionCollection._onAdded
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:238

_onChanged

_onChanged(idx, elem): any
Generates an 'onChanged' event.
Parameters
- idx: number
  Index of the changed element.
- elem: any
  Changed element.
Returns any
Listens
BaseCollection#onChanged
Inherited from TransactionCollection._onChanged
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:282

_onChanging

_onChanging(idx, elem): any
Generates an 'onChanging' event.
Parameters
- idx: number
  Index of the element to be changed.
- elem: any
  The element to be changed.
Returns any
Listens
BaseCollection#onChanging
Inherited from TransactionCollection._onChanging
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:274

_onClear

_onClear(): any
Generates an 'onClear' event.

Returns any
Listens
BaseCollection#onClear
Inherited from TransactionCollection._onClear
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:260

_onCleared

_onCleared(): any
Generates an 'onCheared' event.

Returns any
Listens
BaseCollection#onCleared
Inherited from TransactionCollection._onCleared
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:266

_onRemove

_onRemove(idx, elem): void
Create an 'onRemove' event.
Parameters
- idx: number
  Index of the element to be deleted.
- elem: any
Returns void
Listens
BaseCollection#onRemove
Inherited from TransactionCollection._onRemove
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:246

_onRemoved

_onRemoved(idx, elem): void
Generates an 'onRemoved' event.
Parameters
- idx: number
  Index of the element to be deleted.
- elem: any
  The element to delete.
Returns void
Listens
BaseCollection#onRemoved
Inherited from TransactionCollection._onRemoved
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:254

_remove

_remove(pos): boolean
Deletes an element in a specified location in the collection. This method deletes the element by implementing the abstract method '_remove'. (Use template method patterns)
Parameters
- pos: number
  Index of the element to be deleted.
Returns boolean
This is a Boolean value that indicates whether deletion is successful or not.
Example
```
const success = myCollection._remove(0);
console.log(`Delete element successful: ${success}`);
```
Inherited from TransactionCollection._remove
- Defined in node_modules/logic-core/types/en/collection-array.d.ts:37

add

add(elem, desc?): number
Parameters
- elem: any
- Optionaldesc: PropertyDescriptor
Returns number
Deprecated
Overrides TransactionCollection.add
- Defined in node_modules/logic-entity/types/en/collection-meta-row.d.ts:24
add(row, isCheck?): number
Add the 'MetaRow' object to the collection.
Parameters
- row: MetaRow
  'MetaRow' object to be added.
- OptionalisCheck: boolean
  Specifies whether to perform a validation; the default is 'false'.
Returns number
Index of the added 'MetaRow' object.
Overrides TransactionCollection.add
- Defined in node_modules/logic-entity/types/en/collection-meta-row.d.ts:33

clear

clear(): void
Initializes all elements of the collection. The collection is empty, and all elements are deleted.

Returns void
Inherited from TransactionCollection.clear
- Defined in node_modules/logic-entity/types/en/collection-transaction.d.ts:90

commit

commit(): void
Commit to reflect changes to the collection. This method applies all operations in the transaction queue.

Returns void
Inherited from TransactionCollection.commit
- Defined in node_modules/logic-entity/types/en/collection-transaction.d.ts:109

contains

contains(elem): boolean
Verify that the element exists in the collection.
Parameters
- elem: any
  This is the element to check.
Returns boolean
This is a Boolean value indicating the presence or absence of an element.
Example
```
const exists = myCollection.contains(someElement);
console.log(`element exists: ${exists}`);
```
Inherited from TransactionCollection.contains
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:359

equal

equal(target): boolean
Compare the current object with the specified object.
Parameters
- target: object
  the object to be compared to.
Returns boolean
Returns whether the two objects are the same.
Inherited from TransactionCollection.equal
- Defined in node_modules/logic-core/types/en/meta-object.d.ts:30

every

every(callback, thisArg?): boolean
Test that all elements pass the test implemented with the provided function.
Parameters
- callback: ((value: any, index: number, array: this) => any)
  콜백함수 입니다. (currentValue, index, array) => boolean
  - - (value, index, array): any
    - Parameters
      value: any
      index: number
      array: this
      Returns any
- OptionalthisArg: any
  The value to use as this when executing the callback function.
Returns boolean
True if you return a true value for all array elements, otherwise false.
Inherited from TransactionCollection.every
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:426

filter

filter(callback, thisArg?): any[]
Filter only to elements that have passed the test implemented by the provided function
Parameters
- callback: ((value: any, index: number, array: this) => any)
  콜백함수 입니다.(currentValue, index, array) => boolean
  - - (value, index, array): any
    - Parameters
      value: any
      index: number
      array: this
      Returns any
- OptionalthisArg: any
  The value to use as this when executing the callback function.
Returns any[]
Returns a new array of results.
Inherited from TransactionCollection.filter
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:387

find

find(callback, thisArg?): any
Returns the first element that satisfies the provided test function
Parameters
- callback: ((value: any, index: number, array: this) => any)
  This is the callback function. (currentValue, index, array) => any
  - - (value, index, array): any
    - Parameters
      value: any
      index: number
      array: this
      Returns any
- OptionalthisArg: any
  The value to use as this when executing the callback function.
Returns any
The first element in the array that satisfies the test function. If no element satisfies the test function, undefined is returned.
Inherited from TransactionCollection.find
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:403

findIndex

findIndex(callback, thisArg?): any
Returns the first element that satisfies the provided test function
Parameters
- callback: ((value: any, index: number, array: this) => any)
  콜백함수 입니다. (currentValue, index, array) => boolean
  - - (value, index, array): any
    - Parameters
      value: any
      index: number
      array: this
      Returns any
- OptionalthisArg: any
  The value to use as this when executing the callback function. Index of the first element that passes the @returns{number} test. If no match exists, return -1.
Returns any
Inherited from TransactionCollection.findIndex
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:434

forEach

forEach(callback, thisArg?): void
Run the function provided for each element once.
Parameters
- callback: ((value: any, index: number, array: this) => void)
  This is the callback function. (currentValue, index, array) => void
  - - (value, index, array): void
    - Parameters
      value: any
      index: number
      array: this
      Returns void
- OptionalthisArg: any
  The value to use as this when executing the callback function.
Returns void
Inherited from TransactionCollection.forEach
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:410

getObject

getObject(vOpt?, owned?): object
Converts the current 'TransactionCollection' object to a serialized object. In the serialization process, the cyclic reference is replaced by the value '$ref'.
Parameters
- OptionalvOpt: number
  Specifies the serialization option.
  - '0': Convert to a reference structure (including '_guid' and '$ref')
  - '1': Converting to a redundant structure (including '_guid' and '$ref')
  - '2': Conversion to non-coordinated structure (excluding '_guid' and '$ref')
- Optionalowned: object | object[]
  The parent objects that currently own the object. You can receive an object or array of objects.
Returns object
Serialized object.
Example
```
const serialized = collection.getObject(2); // import serialized objects in a non-coordinated structure
```
Inherited from TransactionCollection.getObject
- Defined in node_modules/logic-entity/types/en/collection-transaction.d.ts:61

getTypes

getTypes(): Function[]
Returns the creators of the current object and all the creators of the prototype chain to the array.

Returns Function[]
Returns the array of generator functions.
Example
```
const types = obj.getTypes();
console.log(types); // [Function: MetaObject]
```
Inherited from TransactionCollection.getTypes
- Defined in node_modules/logic-core/types/en/meta-object.d.ts:41

indexOf

indexOf(elem?): number
Look up an element in the collection.
Parameters
- Optionalelem: any
  The element to look up.
Returns number
Index of element. If element does not exist, return -1.
Example
```
const index = myCollection.indexOf(someElement);
console.log (index of element: ${index});
```
Inherited from TransactionCollection.indexOf
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:371

insertAt

insertAt(pos, elem, desc?): boolean
Parameters
- pos: number
- elem: any
- Optionaldesc: PropertyDescriptor
Returns boolean
Deprecated
Overrides TransactionCollection.insertAt
- Defined in node_modules/logic-entity/types/en/collection-meta-row.d.ts:37
insertAt(pos, row, isCheck?): boolean
Insert the 'MetaRow' object at the specified location in the collection.
Parameters
- pos: number
  Index of the location where the 'MetaRow' object is to be inserted.
- row: MetaRow
  'MetaRow' object to insert.
- OptionalisCheck: boolean
  Specifies whether to perform a validation; the default is 'false'.
Returns boolean
Indicates whether the insertion is successful or not.
Overrides TransactionCollection.insertAt
- Defined in node_modules/logic-entity/types/en/collection-meta-row.d.ts:47

instanceOf

instanceOf(target): boolean
Verify that the current object is an instance of the specified type (including _UNION)
Parameters
- target: string | object
  The type of object to be checked (object or string).
Returns boolean
Returns whether it is an instance of the specified type.
Inherited from TransactionCollection.instanceOf
- Defined in node_modules/logic-core/types/en/meta-object.d.ts:49

map

map(callback, thisArg?): any[]
Collects the results of calling a given function for each element and returns a new array.
Parameters
- callback: ((value: any, index: number, array: this) => any)
  This is the callback function (currentValue, index, array) => any[]
  - - (value, index, array): any
    - Parameters
      value: any
      index: number
      array: this
      Returns any
- OptionalthisArg: any
  The value to use as this when executing the callback function.
Returns any[]
Returns a new array of results.
Inherited from TransactionCollection.map
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:379

reduce

reduce(callback, initialValue?): any
Run the given reducer function for each element and return one result.
Parameters
- callback: ((value: any, index: number, array: this) => any)
  콜백함수 입니다. (accumulator, currentValue, index, array) => any
  - - (value, index, array): any
    - Parameters
      value: any
      index: number
      array: this
      Returns any
- OptionalinitialValue: any
  Use the first element of the array if it does not provide an initial value.
Returns any
Returns a new array of results.
Inherited from TransactionCollection.reduce
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:395

remove

remove(elem): number
Delete an element in the collection.
Parameters
- elem: any
  The element to delete.
Returns number
Index of deleted elements.
Example
```
const removedIndex = myCollection.remove(someElement);
console.log(`Index of deleted element: ${removedIndex}`);
```
Inherited from TransactionCollection.remove
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:335

removeAt

removeAt(pos): boolean
Deletes an element from the specified location.
Parameters
- pos: number
  The index location of the element to be deleted.
Returns boolean
This is the value of 'boolean' indicating successful deletion, 'true' if deletion is successful, and 'false' if it fails.
Example
```
const success = collection.removeAt(2); // delete element of index 2
```
Inherited from TransactionCollection.removeAt
- Defined in node_modules/logic-entity/types/en/collection-transaction.d.ts:84

rollback

rollback(): void
Rolls back changes to the collection to the previous state. This method cancels all operations in the transaction queue.

Returns void
Inherited from TransactionCollection.rollback
- Defined in node_modules/logic-entity/types/en/collection-transaction.d.ts:115

setObject

setObject(oGuid, origin?): any
Sets the serialized object to the current 'Transaction Collection' object. During this process, the object is initialized.
Parameters
- oGuid: object
  object of serialized GUID type.
- Optionalorigin: object
  This is the original object that sets the current object. Default is 'oGuid'.
Returns any
Example
```
collection.setObject(serializedObject); // Set serialized objects to the current collection
```
Inherited from TransactionCollection.setObject
- Defined in node_modules/logic-entity/types/en/collection-transaction.d.ts:73

some

some(callback, thisArg?): boolean
Test that at least one element passes through a given discriminant function.
Parameters
- callback: ((value: any, index: number, array: this) => any)
  콜백함수 입니다. (currentValue, index, array) => boolean
  - - (value, index, array): any
    - Parameters
      value: any
      index: number
      array: this
      Returns any
- OptionalthisArg: any
  The value to use as this when executing the callback function.
Returns boolean
Returns true if you return a true value for one element, or false.
Inherited from TransactionCollection.some
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:418

Events

onAdd

onAdd: ((idx: number, elem: any, _this: object) => void)

Events that occur before adding an element to a collection.

BaseCollection#onAdd

Type declaration

- (idx, elem, _this): void
- Parameters
  - idx: number
    Index of the element to be added.
  - elem: any
    The element to add.
  - _this: object
    current collection object.
  Returns void

Example

myCollection.onAdd = function(idx, elem, _this) {
    console.log(`Before adding elements: index ${idx}, element ${elem}`);
};

onAdded

onAdded: ((idx: number, elem: any, _this: object) => void)

Events that occur after you add an element to a collection.

BaseCollection#onAdded

Type declaration

- (idx, elem, _this): void
- Parameters
  - idx: number
    Index of added elements.
  - elem: any
    Added element.
  - _this: object
    current collection object.
  Returns void

Example

myCollection.onAdded = function(idx, elem, _this) {
    console.log ('After adding elements: index ${idx}, element ${elem}');
};

onChanged

onChanged: ((idx: number, elem: any, _this: object) => void)

Events that occur after you change an element in a collection.

BaseCollection#onChanged

Type declaration

- (idx, elem, _this): void
- Parameters
  - idx: number
    Index of the changed element.
  - elem: any
    Changed element.
  - _this: object
    current collection object.
  Returns void

Example

myCollection.onChanged = function(idx, elem, _this) {
    console.log ('After element change: index ${idx}, element ${elem}');
};

onChanging

onChanging: ((idx: number, elem: any, _this: object) => void)

An event that occurs before you change an element in a collection.

BaseCollection#onChanging

Type declaration

- (idx, elem, _this): void
- Parameters
  - idx: number
    Index of the element to be changed.
  - elem: any
    The element to be changed.
  - _this: object
    current collection object.
  Returns void

Example

myCollection.onChanging = function(idx, elem, _this) {
    console.log(`Before element change: index ${idx}, element ${elem}`);
};

onClear

onClear: ((_this: object) => {})

Events that occur before the collection is initialized.

BaseCollection#onClear

Type declaration

- (_this): {}
- Parameters
  - _this: object
    current collection object.
  Returns {}

Example

myCollection.onClear = function(_this) {
    console.log ('Before collection initialization);
};

onCleared

onCleared: ((_this: object) => {})

Events that occur after the collection is initialized.

BaseCollection#onCleared

Type declaration

- (_this): {}
- Parameters
  - _this: object
    current collection object.
  Returns {}

Example

myCollection.onCleared = function(_this) {
    console.log ('After collection initialization');
};

onRemove

onRemove: ((idx: number, elem: any, _this: object) => void)

An event that occurs before an element is deleted from the collection.

BaseCollection#onRemove

Type declaration

- (idx, elem, _this): void
- Parameters
  - idx: number
    Index of the element to be deleted.
  - elem: any
    The element to delete.
  - _this: object
    current collection object.
  Returns void

Example

myCollection.onRemove = function(idx, elem, _this) {
    console.log(`Before element deletion: index ${idx}, element ${elem}`);
};

onRemoved

onRemoved: ((idx: number, elem: any, _this: object) => void)

Events that occur after you delete an element from a collection.

BaseCollection#onRemoved

Type declaration

- (idx, elem, _this): void
- Parameters
  - idx: number
    Index of deleted elements.
  - elem: any
    Deleted element.
  - _this: object
    current collection object.
  Returns void

Example

myCollection.onRemoved = function(idx, elem, _this) {
    console.log(`After element deletion: index ${idx}, element ${elem}`);
};

Class MetaRowCollection

Hierarchy (view full)

Index

Constructors

Properties

Methods

Events

Constructors

constructor

Parameters

Returns MetaRowCollection

Properties

Protected_elemTypes

_guid

Readonly_list

Protected_owner

_transQueue

_type

autoChanges

Readonlycount

hasChanges

Readonlylength

Static Readonly_NS

Default

Static Readonly_PARAM

Static Readonly_UNION

Default

Methods

_getPropDescriptor

Parameters

Returns PropertyDescriptor

_onAdd

Parameters

Returns void

Listens

_onAdded

Parameters

Returns void

Listens

_onChanged

Parameters

Returns any

Listens

_onChanging

Parameters

Returns any

Listens

_onClear

Returns any

Listens

_onCleared

Returns any

Listens

_onRemove

Parameters

Returns void

Listens

_onRemoved

Parameters

Returns void

Listens

_remove

Parameters

Returns boolean

Example

add

Parameters

Returns number

Deprecated

Parameters

Returns number

clear

Returns void

commit

Returns void

contains

Parameters

Returns boolean

Example

equal

`Protected`_elemTypes

`Readonly`_list

`Protected`_owner

`Readonly`count

`Readonly`length

`Static` `Readonly`_NS

`Static` `Readonly`_PARAM

`Static` `Readonly`_UNION