[mxcad_2d API documentation] (../README. md)/[2d] (../modules/2d. md)/McDbObject Array

Class: McDbObjectArray

2d.McDbObjectArray

McDbObject Array is a collection container for multiple McDbObject objects, used for batch storage, traversal, and management of database objects.

Description

This class is suitable for unified processing scenarios of a group of objects, such as batch traversal, filtering, statistics, and subsequent editing. It can accomplish: -Batch save a set of database objects; -Accessing objects by index; -Traverse the array and execute unified logic; -Determine whether the set is empty.

Usage:

1. Create a McDbObject Array by querying the database or returning a collection of objects;
2. Call forEach() to traverse each object;
3. Use length() and empty() to determine the set state;
4. Continue to convert objects into specific entity types as needed for subsequent processing.

Summary: In practical development, McDbObject Array is mainly used for batch object processing, suitable for scenarios that require unified traversal, filtering, or statistics of a set of database objects.

Example

•   * import { MxCADUiPrPoint, MxCpp, MxCADUiPrEntity, McDbObject } from 'mxcad'
      async function test(){
           let getFristPoint = new MxCADUiPrPoint();
           let offsetDist = 10 ;
           let getent = new MxCADUiPrEntity();

Getent.setMessage ('specify offset object '); let ent_id = await getEnt.go(); if (!ent_id) return; let ent = (await ent_id.getMcDbEntity()) as McDbCurve; let getoOffPt = new MxCADUiPrPoint(); GetoOffPt.setMessage ('specify offset point '); let offPt = await getoOffPt.go(); if (!offPt) return; let objArr = ent.offsetCurves(offsetDist, offPt); if (objArr.length() === 0) return; objArr.forEach((obj: McDbObject) => { MxCpp.getCurrentCAD().drawEntity(obj as McDbEntity); }); } * ```

Table of contents

Constructors

• constructor

Properties

• aryVal

Methods

• empty
• forEach
• length

Constructors

constructor

• new McDbObjectArray(imp?)

Constructor.

Parameters

Name	Type	Description
imp?	Any	Internal implementation object

Properties

aryVal

• aryVal: McDbObject[] = []

object array

Methods

empty

▸ empty(): boolean

Clear the array

Returns

boolean

---

forEach

▸ forEach(call): void

Traverse objects

Parameters

Name	Type
call	(val: McDbObject, index: number) => void

Returns

void

---

length

▸ length(): number

Array length

Returns

number