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// automatically generated by the FlatBuffers compiler, do not modify
import * as flatbuffers from 'flatbuffers';
import { DictionaryEncoding } from './dictionary-encoding.js';
import { KeyValue } from './key-value.js';
import { Type } from './type.js';
/**
* ----------------------------------------------------------------------
* A field represents a named column in a record / row batch or child of a
* nested type.
*/
export class Field {
bb: flatbuffers.ByteBuffer|null = null;
bb_pos = 0;
__init(i:number, bb:flatbuffers.ByteBuffer):Field {
this.bb_pos = i;
this.bb = bb;
return this;
}
static getRootAsField(bb:flatbuffers.ByteBuffer, obj?:Field):Field {
return (obj || new Field()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
}
static getSizePrefixedRootAsField(bb:flatbuffers.ByteBuffer, obj?:Field):Field {
bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
return (obj || new Field()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
}
/**
* Name is not required, in i.e. a List
*/
name():string|null
name(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
name(optionalEncoding?:any):string|Uint8Array|null {
const offset = this.bb!.__offset(this.bb_pos, 4);
return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
}
/**
* Whether or not this field can contain nulls. Should be true in general.
*/
nullable():boolean {
const offset = this.bb!.__offset(this.bb_pos, 6);
return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
}
typeType():Type {
const offset = this.bb!.__offset(this.bb_pos, 8);
return offset ? this.bb!.readUint8(this.bb_pos + offset) : Type.NONE;
}
/**
* This is the type of the decoded value if the field is dictionary encoded.
*/
// @ts-ignore
type<T extends flatbuffers.Table>(obj:any):any|null {
const offset = this.bb!.__offset(this.bb_pos, 10);
return offset ? this.bb!.__union(obj, this.bb_pos + offset) : null;
}
/**
* Present only if the field is dictionary encoded.
*/
dictionary(obj?:DictionaryEncoding):DictionaryEncoding|null {
const offset = this.bb!.__offset(this.bb_pos, 12);
return offset ? (obj || new DictionaryEncoding()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
}
/**
* children apply only to nested data types like Struct, List and Union. For
* primitive types children will have length 0.
*/
children(index: number, obj?:Field):Field|null {
const offset = this.bb!.__offset(this.bb_pos, 14);
return offset ? (obj || new Field()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
}
childrenLength():number {
const offset = this.bb!.__offset(this.bb_pos, 14);
return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
}
/**
* User-defined metadata
*/
customMetadata(index: number, obj?:KeyValue):KeyValue|null {
const offset = this.bb!.__offset(this.bb_pos, 16);
return offset ? (obj || new KeyValue()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
}
customMetadataLength():number {
const offset = this.bb!.__offset(this.bb_pos, 16);
return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
}
static startField(builder:flatbuffers.Builder) {
builder.startObject(7);
}
static addName(builder:flatbuffers.Builder, nameOffset:flatbuffers.Offset) {
builder.addFieldOffset(0, nameOffset, 0);
}
static addNullable(builder:flatbuffers.Builder, nullable:boolean) {
builder.addFieldInt8(1, +nullable, +false);
}
static addTypeType(builder:flatbuffers.Builder, typeType:Type) {
builder.addFieldInt8(2, typeType, Type.NONE);
}
static addType(builder:flatbuffers.Builder, typeOffset:flatbuffers.Offset) {
builder.addFieldOffset(3, typeOffset, 0);
}
static addDictionary(builder:flatbuffers.Builder, dictionaryOffset:flatbuffers.Offset) {
builder.addFieldOffset(4, dictionaryOffset, 0);
}
static addChildren(builder:flatbuffers.Builder, childrenOffset:flatbuffers.Offset) {
builder.addFieldOffset(5, childrenOffset, 0);
}
static createChildrenVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
builder.startVector(4, data.length, 4);
for (let i = data.length - 1; i >= 0; i--) {
builder.addOffset(data[i]!);
}
return builder.endVector();
}
static startChildrenVector(builder:flatbuffers.Builder, numElems:number) {
builder.startVector(4, numElems, 4);
}
static addCustomMetadata(builder:flatbuffers.Builder, customMetadataOffset:flatbuffers.Offset) {
builder.addFieldOffset(6, customMetadataOffset, 0);
}
static createCustomMetadataVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
builder.startVector(4, data.length, 4);
for (let i = data.length - 1; i >= 0; i--) {
builder.addOffset(data[i]!);
}
return builder.endVector();
}
static startCustomMetadataVector(builder:flatbuffers.Builder, numElems:number) {
builder.startVector(4, numElems, 4);
}
static endField(builder:flatbuffers.Builder):flatbuffers.Offset {
const offset = builder.endObject();
return offset;
}
}
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