Class MetaViewColumnCollection

The 'MetaView Column Collection' class defines the collection that manages the meta-view column. This class provides the ability to add meta columns, to serialize and manage reference collections.

Hierarchy (view full)

BaseColumnCollection
- MetaViewColumnCollection

Constructors

constructor

new MetaViewColumnCollection(owner): MetaViewColumnCollection
Creates a 'MetaView ColumnCollection' object. This object creates a collection that manages columns in the meta view.
Parameters
- owner: object
Returns MetaViewColumnCollection
Paramowner
- Specifies the owner object of this collection.
Overrides BaseColumnCollection.constructor
- Defined in node_modules/logic-entity/types/en/collection-meta-view-column.d.ts:17

Properties

`Protected`_baseType

_baseType: BaseColumn

Save the default column type.

`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.

_refEntities

_refEntities: BaseEntity[]

List of entities referenced by this collection. Each entity is of type 'BaseEntity'.

Example

constructions = collection._refEntities; // Get list of entities

_type

_type: Function

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

$keys

$keys: string[]

Stores the key values of the collection element in an array.

`Readonly`count

count: number

Returns the number of elements in the current 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

`Protected`_getPropDescriptor

_getPropDescriptor(idx): object
Protected
Default descriptor set when adding elements to a collection.
Parameters
- idx: number
  Index of the element to which the technician will be imported.
Returns object
Inherited from BaseColumnCollection._getPropDescriptor
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:290

_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 BaseColumnCollection._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 BaseColumnCollection._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 BaseColumnCollection._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 BaseColumnCollection._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 BaseColumnCollection._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 BaseColumnCollection._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 BaseColumnCollection._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 BaseColumnCollection._onRemoved
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:254

`Protected`_ownerIsEntity

_ownerIsEntity(): boolean
Protected
Verify that this._owner is an entity.

Returns boolean
Bullion value indicating whether the entity exists.
Inherited from BaseColumnCollection._ownerIsEntity
- Defined in node_modules/logic-entity/types/en/base-column-collection.d.ts:32

_remove

_remove(pos): boolean
Deletes an element in a specified location in the collection. Use the template method pattern to perform the deletion.
Parameters
- pos: number
  Index of the element to be deleted.
Returns boolean
This is a Boolean value that indicates whether element deletion is successful or not.
Example
```
const success = myCollection._remove(1);
console.log(`Delete element successful: ${success}`);
```
Inherited from BaseColumnCollection._remove
- Defined in node_modules/logic-core/types/en/collection-property.d.ts:41

add

add(column, refCollection): number
Adds or sets a column to the collection. When a column is added, actions related to the reference collection are performed.
- When adding a column with 'entity': a reference is added.
- If you add a column without 'entity', register yourself as the owner.
- If a column exists in the collection: 'columns' object is ignored and registers a reference to the returned object.
- If there is no column in the collection: Set 'entity' in the collection; only the top is registered when a reference recursive call is made.
Parameters
- column: string | MetaColumn
  The column to be added. You can receive the 'MetaColumn' object or column name (string).
- refCollection: BaseColumnCollection
  Reference collection. Object of type 'BaseColumnCollection'.
Returns number
The index of the added column. The index represents the location of the column within the collection.
Example
```
const index = collection.add(new MetaColumn("price"), refCollection); // `MetaColumn` 객체로 컬럼 추가
const index = collection.add("quantity", refCollection); // Add column with string (column name)
```
Overrides BaseColumnCollection.add
- Defined in node_modules/logic-entity/types/en/collection-meta-view-column.d.ts:58

addEntity

addEntity(entity): void
Adds all columns of a given entity to the collection.
Parameters
- entity: BaseEntity
  The entity to be added to the collection. The object of type 'BaseEntity'.
Returns void
Example
```
collection.addEntity(entity); // Add all columns of a given entity
```
- Defined in node_modules/logic-entity/types/en/collection-meta-view-column.d.ts:81

addValue

addValue(name, value, refCollection): number
Creates a new column with a name and value and adds it to the collection.
Parameters
- name: string
  The name of the column you want to add.
- value: string | number | boolean
  Default value for the column. You can receive string, numeric, or Boolean values.
- refCollection: BaseColumnCollection
  Reference collection. Object of type 'BaseColumnCollection'.
Returns number
Index of the newly added column.
Example
```
const index = collection.addValue ("discount", 10, refCollection"); // Add column with name and value
```
Overrides BaseColumnCollection.addValue
- Defined in node_modules/logic-entity/types/en/collection-meta-view-column.d.ts:71

alias

alias(key): BaseColumn
Obtain column objects for aliases.
Parameters
- key: string
  alias name.
Returns BaseColumn
The column object corresponding to the alias, if it does not exist, is 'undefined'.
Inherited from BaseColumnCollection.alias
- Defined in node_modules/logic-entity/types/en/base-column-collection.d.ts:78

clear

clear(): void
Initialize the property collection. This method initializes the array '$elements', '$descriptors', and '$keys'. The event is not initialized.

Returns void
Example
```
myCollection.clear();
console.log(myCollection.count); // 0
```
Inherited from BaseColumnCollection.clear
- Defined in node_modules/logic-core/types/en/collection-property.d.ts:101

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 BaseColumnCollection.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 BaseColumnCollection.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 BaseColumnCollection.every
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:426

exist

exist(key): boolean
Verify that the specified key exists in the property collection.
Parameters
- key: string
  Key to check. Bulian value indicating the presence or absence of the
Returns boolean
key.
Inherited from BaseColumnCollection.exist
- Defined in node_modules/logic-core/types/en/collection-property.d.ts:133

existAlias

existAlias(key): boolean
Examine whether an alias name (key) exists in the collection.
Parameters
- key: string
  alias name.
Returns boolean
Alias name exists.
Inherited from BaseColumnCollection.existAlias
- Defined in node_modules/logic-entity/types/en/base-column-collection.d.ts:62

existColumnName

existColumnName(key): boolean
Examine whether a column name (key) exists in the collection.
Parameters
- key: string
  the name of the column.
Returns boolean
column name exists.
Inherited from BaseColumnCollection.existColumnName
- Defined in node_modules/logic-entity/types/en/base-column-collection.d.ts:70

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 BaseColumnCollection.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 BaseColumnCollection.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 BaseColumnCollection.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 BaseColumnCollection.forEach
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:410

getObject

getObject(vOpt?, owned?): object
Converts the current 'MetaView ColumnCollection' object to a serialized object. In the serialization process, the cyclic reference is replaced by the value '$ref'.
Parameters
- OptionalvOpt: number
  Specifies the import option.
  - '0': Convert to a reference structure (including '_guid' and '$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); // Get objects serialized in a non-coordinated structure
```
Overrides BaseColumnCollection.getObject
- Defined in node_modules/logic-entity/types/en/collection-meta-view-column.d.ts:41

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 BaseColumnCollection.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 BaseColumnCollection.indexOf
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:371

indexToKey

indexToKey(idx): string
Returns the key corresponding to the index of the property collection.
Parameters
- idx: number
  Index value to query.
Returns string
Key corresponding to index. You can return 'undefined' if the index is out of range.
Example
```
const key = myCollection.indexToKey(0);
console.log(key for index 0: ${key}');
```
Inherited from BaseColumnCollection.indexToKey
- Defined in node_modules/logic-core/types/en/collection-property.d.ts:125

initValue

initValue(): void
Initializes all column values in the collection to their default values.

Returns void
Inherited from BaseColumnCollection.initValue
- Defined in node_modules/logic-entity/types/en/base-column-collection.d.ts:54

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 BaseColumnCollection.instanceOf
- Defined in node_modules/logic-core/types/en/meta-object.d.ts:49

keyToIndex

keyToIndex(key): number
Returns the index of the key or element specified in the property collection.
Parameters
- key: string
  key This is the key to look up.
Returns number
Index of element . Returns '-1' if element does not exist.
Example
```
const index = myCollection.keyToIndex("key1");
console.log(`Index of key: ${index}`);
```
Inherited from BaseColumnCollection.keyToIndex
- Defined in node_modules/logic-core/types/en/collection-property.d.ts:113

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 BaseColumnCollection.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 BaseColumnCollection.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 BaseColumnCollection.remove
- Defined in node_modules/logic-core/types/en/base-collection.d.ts:335

removeAt

removeAt(index): boolean
Deletes the column for the specified index from the collection.
Parameters
- index: number
  Index of the column to be deleted.
Returns boolean
Deletion successful.
Inherited from BaseColumnCollection.removeAt
- Defined in node_modules/logic-entity/types/en/base-column-collection.d.ts:49

setObject

setObject(oGuid, origin?): void
Initialize the property collection object using serialized objects. During this process, the object is initialized.
Parameters
- oGuid: object
  serialized object.
- Optionalorigin: object
  Original object. Default is 'oGuid'.
Returns void
Inherited from BaseColumnCollection.setObject
- Defined in node_modules/logic-core/types/en/collection-property.d.ts:67

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 BaseColumnCollection.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 MetaViewColumnCollection

Hierarchy (view full)

Index

Constructors

Properties

Methods

Events

Constructors

constructor

Parameters

Returns MetaViewColumnCollection

Paramowner

Properties

Protected_baseType

Protected_elemTypes

_guid

Readonly_list

Protected_owner

_refEntities

Example

_type

$keys

Readonlycount

Readonlylength

Static Readonly_NS

Default

Static Readonly_PARAM

Static Readonly_UNION

Default

Methods

Protected_getPropDescriptor

Parameters

Returns object

_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

Protected_ownerIsEntity

Returns boolean

_remove

Parameters

Returns boolean

Example

add

Parameters

Returns number

Example

addEntity

Parameters

Returns void

Example

addValue

Parameters

Returns number

`Protected`_baseType

`Protected`_elemTypes

`Readonly`_list

`Protected`_owner

`Readonly`count

`Readonly`length

`Static` `Readonly`_NS

`Static` `Readonly`_PARAM

`Static` `Readonly`_UNION

`Protected`_getPropDescriptor

`Protected`_ownerIsEntity