apache-arrow
Version:
Apache Arrow columnar in-memory format
128 lines (126 loc) • 4.71 kB
JavaScript
"use strict";
// automatically generated by the FlatBuffers compiler, do not modify
Object.defineProperty(exports, "__esModule", { value: true });
exports.SparseTensor = void 0;
const flatbuffers = require("flatbuffers");
const buffer_js_1 = require("./buffer.js");
const sparse_tensor_index_js_1 = require("./sparse-tensor-index.js");
const tensor_dim_js_1 = require("./tensor-dim.js");
const type_js_1 = require("./type.js");
class SparseTensor {
constructor() {
this.bb = null;
this.bb_pos = 0;
}
__init(i, bb) {
this.bb_pos = i;
this.bb = bb;
return this;
}
static getRootAsSparseTensor(bb, obj) {
return (obj || new SparseTensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
}
static getSizePrefixedRootAsSparseTensor(bb, obj) {
bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
return (obj || new SparseTensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
}
typeType() {
const offset = this.bb.__offset(this.bb_pos, 4);
return offset ? this.bb.readUint8(this.bb_pos + offset) : type_js_1.Type.NONE;
}
/**
* The type of data contained in a value cell.
* Currently only fixed-width value types are supported,
* no strings or nested types.
*/
type(obj) {
const offset = this.bb.__offset(this.bb_pos, 6);
return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
}
/**
* The dimensions of the tensor, optionally named.
*/
shape(index, obj) {
const offset = this.bb.__offset(this.bb_pos, 8);
return offset ? (obj || new tensor_dim_js_1.TensorDim()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
}
shapeLength() {
const offset = this.bb.__offset(this.bb_pos, 8);
return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
}
/**
* The number of non-zero values in a sparse tensor.
*/
nonZeroLength() {
const offset = this.bb.__offset(this.bb_pos, 10);
return offset ? this.bb.readInt64(this.bb_pos + offset) : BigInt('0');
}
sparseIndexType() {
const offset = this.bb.__offset(this.bb_pos, 12);
return offset ? this.bb.readUint8(this.bb_pos + offset) : sparse_tensor_index_js_1.SparseTensorIndex.NONE;
}
/**
* Sparse tensor index
*/
sparseIndex(obj) {
const offset = this.bb.__offset(this.bb_pos, 14);
return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
}
/**
* The location and size of the tensor's data
*/
data(obj) {
const offset = this.bb.__offset(this.bb_pos, 16);
return offset ? (obj || new buffer_js_1.Buffer()).__init(this.bb_pos + offset, this.bb) : null;
}
static startSparseTensor(builder) {
builder.startObject(7);
}
static addTypeType(builder, typeType) {
builder.addFieldInt8(0, typeType, type_js_1.Type.NONE);
}
static addType(builder, typeOffset) {
builder.addFieldOffset(1, typeOffset, 0);
}
static addShape(builder, shapeOffset) {
builder.addFieldOffset(2, shapeOffset, 0);
}
static createShapeVector(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 startShapeVector(builder, numElems) {
builder.startVector(4, numElems, 4);
}
static addNonZeroLength(builder, nonZeroLength) {
builder.addFieldInt64(3, nonZeroLength, BigInt('0'));
}
static addSparseIndexType(builder, sparseIndexType) {
builder.addFieldInt8(4, sparseIndexType, sparse_tensor_index_js_1.SparseTensorIndex.NONE);
}
static addSparseIndex(builder, sparseIndexOffset) {
builder.addFieldOffset(5, sparseIndexOffset, 0);
}
static addData(builder, dataOffset) {
builder.addFieldStruct(6, dataOffset, 0);
}
static endSparseTensor(builder) {
const offset = builder.endObject();
builder.requiredField(offset, 6); // type
builder.requiredField(offset, 8); // shape
builder.requiredField(offset, 14); // sparseIndex
builder.requiredField(offset, 16); // data
return offset;
}
static finishSparseTensorBuffer(builder, offset) {
builder.finish(offset);
}
static finishSizePrefixedSparseTensorBuffer(builder, offset) {
builder.finish(offset, undefined, true);
}
}
exports.SparseTensor = SparseTensor;
//# sourceMappingURL=sparse-tensor.js.map