Member Junction
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    Class MJColumnDescriptor

    Column descriptor with MemberJunction entity lineage. Enables entity linking, schema-aware formatting, and agent understanding of where data originates.

    Hierarchy (View Summary)

    Index

    Constructors

    constructor

    Properties

    description? displayName? field isComputed? isSummary? sourceEntity? sourceFieldName? sqlBaseType? sqlFullType? width?

    Methods

    FromColumnDescriptor FromSimpleQueryField

    Constructors

    Properties

    description?: string

    Human-readable description of what this column represents

    displayName?: string

    Human-readable display name for headers, labels, and tooltips

    field: string

    Field name in the row data — the key used to access the value: row[field]

    isComputed?: boolean

    True for calculated expressions: CASE, ROUND, CONCAT, etc.

    isSummary?: boolean

    True for aggregate functions: SUM, COUNT, AVG, etc.

    sourceEntity?: string

    MJ entity name this column originates from (e.g., "Customers")

    sourceFieldName?: string

    Field name in that entity (e.g., "ID", "FirstName")

    sqlBaseType?: SQLBaseType

    SQL base type — source of truth for formatting in MJ

    sqlFullType?: string

    Full SQL type with precision/scale: 'decimal(18,2)', 'nvarchar(255)'

    width?: number

    Column width in pixels (hint for renderers)

    Methods

    • Create from a SimpleQueryFieldInfo (bridges legacy component data requirements)

      Parameters

      • field: {
            description?: string;
            isSummary?: boolean;
            name: string;
            sourceEntity?: string;
            sourceFieldName?: string;
            type?: string;
        }

      Returns MJColumnDescriptor

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