apache-arrow
Version:
Apache Arrow columnar in-memory format
111 lines (109 loc) • 4.1 kB
JavaScript
// automatically generated by the FlatBuffers compiler, do not modify
import * as flatbuffers from 'flatbuffers';
import { Block } from './block.mjs';
import { KeyValue } from './key-value.mjs';
import { MetadataVersion } from './metadata-version.mjs';
import { Schema } from './schema.mjs';
/**
* ----------------------------------------------------------------------
* Arrow File metadata
*
*/
export class Footer {
constructor() {
this.bb = null;
this.bb_pos = 0;
}
__init(i, bb) {
this.bb_pos = i;
this.bb = bb;
return this;
}
static getRootAsFooter(bb, obj) {
return (obj || new Footer()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
}
static getSizePrefixedRootAsFooter(bb, obj) {
bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
return (obj || new Footer()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
}
version() {
const offset = this.bb.__offset(this.bb_pos, 4);
return offset ? this.bb.readInt16(this.bb_pos + offset) : MetadataVersion.V1;
}
schema(obj) {
const offset = this.bb.__offset(this.bb_pos, 6);
return offset ? (obj || new Schema()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
}
dictionaries(index, obj) {
const offset = this.bb.__offset(this.bb_pos, 8);
return offset ? (obj || new Block()).__init(this.bb.__vector(this.bb_pos + offset) + index * 24, this.bb) : null;
}
dictionariesLength() {
const offset = this.bb.__offset(this.bb_pos, 8);
return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
}
recordBatches(index, obj) {
const offset = this.bb.__offset(this.bb_pos, 10);
return offset ? (obj || new Block()).__init(this.bb.__vector(this.bb_pos + offset) + index * 24, this.bb) : null;
}
recordBatchesLength() {
const offset = this.bb.__offset(this.bb_pos, 10);
return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
}
/**
* User-defined metadata
*/
customMetadata(index, obj) {
const offset = this.bb.__offset(this.bb_pos, 12);
return offset ? (obj || new KeyValue()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
}
customMetadataLength() {
const offset = this.bb.__offset(this.bb_pos, 12);
return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
}
static startFooter(builder) {
builder.startObject(5);
}
static addVersion(builder, version) {
builder.addFieldInt16(0, version, MetadataVersion.V1);
}
static addSchema(builder, schemaOffset) {
builder.addFieldOffset(1, schemaOffset, 0);
}
static addDictionaries(builder, dictionariesOffset) {
builder.addFieldOffset(2, dictionariesOffset, 0);
}
static startDictionariesVector(builder, numElems) {
builder.startVector(24, numElems, 8);
}
static addRecordBatches(builder, recordBatchesOffset) {
builder.addFieldOffset(3, recordBatchesOffset, 0);
}
static startRecordBatchesVector(builder, numElems) {
builder.startVector(24, numElems, 8);
}
static addCustomMetadata(builder, customMetadataOffset) {
builder.addFieldOffset(4, customMetadataOffset, 0);
}
static createCustomMetadataVector(builder, data) {
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, numElems) {
builder.startVector(4, numElems, 4);
}
static endFooter(builder) {
const offset = builder.endObject();
return offset;
}
static finishFooterBuffer(builder, offset) {
builder.finish(offset);
}
static finishSizePrefixedFooterBuffer(builder, offset) {
builder.finish(offset, undefined, true);
}
}
//# sourceMappingURL=footer.mjs.map