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"use strict";
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
Object.defineProperty(exports, "__esModule", { value: true });
exports.makeData = exports.Data = exports.kUnknownNullCount = void 0;
const vector_js_1 = require("./vector.js");
const enum_js_1 = require("./enum.js");
const type_js_1 = require("./type.js");
const bit_js_1 = require("./util/bit.js");
/** @ignore */ exports.kUnknownNullCount = -1;
/**
* Data structure underlying {@link Vector}s. Use the convenience method {@link makeData}.
*/
class Data {
constructor(type, offset, length, nullCount, buffers, children = [], dictionary) {
this.type = type;
this.children = children;
this.dictionary = dictionary;
this.offset = Math.floor(Math.max(offset || 0, 0));
this.length = Math.floor(Math.max(length || 0, 0));
this._nullCount = Math.floor(Math.max(nullCount || 0, -1));
let buffer;
if (buffers instanceof Data) {
this.stride = buffers.stride;
this.values = buffers.values;
this.typeIds = buffers.typeIds;
this.nullBitmap = buffers.nullBitmap;
this.valueOffsets = buffers.valueOffsets;
}
else {
this.stride = (0, type_js_1.strideForType)(type);
if (buffers) {
(buffer = buffers[0]) && (this.valueOffsets = buffer);
(buffer = buffers[1]) && (this.values = buffer);
(buffer = buffers[2]) && (this.nullBitmap = buffer);
(buffer = buffers[3]) && (this.typeIds = buffer);
}
}
this.nullable = this._nullCount !== 0 && this.nullBitmap && this.nullBitmap.byteLength > 0;
}
get typeId() { return this.type.typeId; }
get ArrayType() { return this.type.ArrayType; }
get buffers() {
return [this.valueOffsets, this.values, this.nullBitmap, this.typeIds];
}
get byteLength() {
let byteLength = 0;
const { valueOffsets, values, nullBitmap, typeIds } = this;
valueOffsets && (byteLength += valueOffsets.byteLength);
values && (byteLength += values.byteLength);
nullBitmap && (byteLength += nullBitmap.byteLength);
typeIds && (byteLength += typeIds.byteLength);
return this.children.reduce((byteLength, child) => byteLength + child.byteLength, byteLength);
}
get nullCount() {
let nullCount = this._nullCount;
let nullBitmap;
if (nullCount <= exports.kUnknownNullCount && (nullBitmap = this.nullBitmap)) {
this._nullCount = nullCount = this.length - (0, bit_js_1.popcnt_bit_range)(nullBitmap, this.offset, this.offset + this.length);
}
return nullCount;
}
getValid(index) {
if (this.nullable && this.nullCount > 0) {
const pos = this.offset + index;
const val = this.nullBitmap[pos >> 3];
return (val & (1 << (pos % 8))) !== 0;
}
return true;
}
setValid(index, value) {
// Don't interact w/ nullBitmap if not nullable
if (!this.nullable) {
return value;
}
// If no null bitmap, initialize one on the fly
if (!this.nullBitmap || this.nullBitmap.byteLength <= (index >> 3)) {
const { nullBitmap } = this._changeLengthAndBackfillNullBitmap(this.length);
Object.assign(this, { nullBitmap, _nullCount: 0 });
}
const { nullBitmap, offset } = this;
const pos = (offset + index) >> 3;
const bit = (offset + index) % 8;
const val = (nullBitmap[pos] >> bit) & 1;
// If `val` is truthy and the current bit is 0, flip it to 1 and increment `_nullCount`.
// If `val` is falsey and the current bit is 1, flip it to 0 and decrement `_nullCount`.
value ? val === 0 && ((nullBitmap[pos] |= (1 << bit)), (this._nullCount = this.nullCount + 1))
: val === 1 && ((nullBitmap[pos] &= ~(1 << bit)), (this._nullCount = this.nullCount - 1));
return value;
}
clone(type = this.type, offset = this.offset, length = this.length, nullCount = this._nullCount, buffers = this, children = this.children) {
return new Data(type, offset, length, nullCount, buffers, children, this.dictionary);
}
slice(offset, length) {
const { stride, typeId, children } = this;
// +true === 1, +false === 0, so this means
// we keep nullCount at 0 if it's already 0,
// otherwise set to the invalidated flag -1
const nullCount = +(this._nullCount === 0) - 1;
const childStride = typeId === 16 /* FixedSizeList */ ? stride : 1;
const buffers = this._sliceBuffers(offset, length, stride, typeId);
return this.clone(this.type, this.offset + offset, length, nullCount, buffers,
// Don't slice children if we have value offsets (the variable-width types)
(children.length === 0 || this.valueOffsets) ? children : this._sliceChildren(children, childStride * offset, childStride * length));
}
_changeLengthAndBackfillNullBitmap(newLength) {
if (this.typeId === enum_js_1.Type.Null) {
return this.clone(this.type, 0, newLength, 0);
}
const { length, nullCount } = this;
// start initialized with 0s (nulls), then fill from 0 to length with 1s (not null)
const bitmap = new Uint8Array(((newLength + 63) & ~63) >> 3).fill(255, 0, length >> 3);
// set all the bits in the last byte (up to bit `length - length % 8`) to 1 (not null)
bitmap[length >> 3] = (1 << (length - (length & ~7))) - 1;
// if we have a nullBitmap, truncate + slice and set it over the pre-filled 1s
if (nullCount > 0) {
bitmap.set((0, bit_js_1.truncateBitmap)(this.offset, length, this.nullBitmap), 0);
}
const buffers = this.buffers;
buffers[enum_js_1.BufferType.VALIDITY] = bitmap;
return this.clone(this.type, 0, newLength, nullCount + (newLength - length), buffers);
}
_sliceBuffers(offset, length, stride, typeId) {
let arr;
const { buffers } = this;
// If typeIds exist, slice the typeIds buffer
(arr = buffers[enum_js_1.BufferType.TYPE]) && (buffers[enum_js_1.BufferType.TYPE] = arr.subarray(offset, offset + length));
// If offsets exist, only slice the offsets buffer
(arr = buffers[enum_js_1.BufferType.OFFSET]) && (buffers[enum_js_1.BufferType.OFFSET] = arr.subarray(offset, offset + length + 1)) ||
// Otherwise if no offsets, slice the data buffer. Don't slice the data vector for Booleans, since the offset goes by bits not bytes
(arr = buffers[enum_js_1.BufferType.DATA]) && (buffers[enum_js_1.BufferType.DATA] = typeId === 6 ? arr : arr.subarray(stride * offset, stride * (offset + length)));
return buffers;
}
_sliceChildren(children, offset, length) {
return children.map((child) => child.slice(offset, length));
}
}
exports.Data = Data;
Data.prototype.children = Object.freeze([]);
const visitor_js_1 = require("./visitor.js");
const buffer_js_1 = require("./util/buffer.js");
class MakeDataVisitor extends visitor_js_1.Visitor {
visit(props) {
return this.getVisitFn(props['type']).call(this, props);
}
visitNull(props) {
const { ['type']: type, ['offset']: offset = 0, ['length']: length = 0, } = props;
return new Data(type, offset, length, 0);
}
visitBool(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
const { ['length']: length = data.length >> 3, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
}
visitInt(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
}
visitFloat(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
}
visitUtf8(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const data = (0, buffer_js_1.toUint8Array)(props['data']);
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const valueOffsets = (0, buffer_js_1.toInt32Array)(props['valueOffsets']);
const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
return new Data(type, offset, length, nullCount, [valueOffsets, data, nullBitmap]);
}
visitBinary(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const data = (0, buffer_js_1.toUint8Array)(props['data']);
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const valueOffsets = (0, buffer_js_1.toInt32Array)(props['valueOffsets']);
const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
return new Data(type, offset, length, nullCount, [valueOffsets, data, nullBitmap]);
}
visitFixedSizeBinary(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
}
visitDate(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
}
visitTimestamp(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
}
visitTime(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
}
visitDecimal(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
}
visitList(props) {
const { ['type']: type, ['offset']: offset = 0, ['child']: child } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const valueOffsets = (0, buffer_js_1.toInt32Array)(props['valueOffsets']);
const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap], [child]);
}
visitStruct(props) {
const { ['type']: type, ['offset']: offset = 0, ['children']: children = [] } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const { length = children.reduce((len, { length }) => Math.max(len, length), 0), nullCount = props['nullBitmap'] ? -1 : 0 } = props;
return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap], children);
}
visitUnion(props) {
const { ['type']: type, ['offset']: offset = 0, ['children']: children = [] } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const typeIds = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['typeIds']);
const { ['length']: length = typeIds.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
if (type_js_1.DataType.isSparseUnion(type)) {
return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap, typeIds], children);
}
const valueOffsets = (0, buffer_js_1.toInt32Array)(props['valueOffsets']);
return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap, typeIds], children);
}
visitDictionary(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const data = (0, buffer_js_1.toArrayBufferView)(type.indices.ArrayType, props['data']);
const { ['dictionary']: dictionary = new vector_js_1.Vector([new MakeDataVisitor().visit({ type: type.dictionary })]) } = props;
const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap], [], dictionary);
}
visitInterval(props) {
const { ['type']: type, ['offset']: offset = 0 } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
}
visitFixedSizeList(props) {
const { ['type']: type, ['offset']: offset = 0, ['child']: child = new MakeDataVisitor().visit({ type: type.valueType }) } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const { ['length']: length = child.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap], [child]);
}
visitMap(props) {
const { ['type']: type, ['offset']: offset = 0, ['child']: child = new MakeDataVisitor().visit({ type: type.childType }) } = props;
const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
const valueOffsets = (0, buffer_js_1.toInt32Array)(props['valueOffsets']);
const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap], [child]);
}
}
function makeData(props) {
return new MakeDataVisitor().visit(props);
}
exports.makeData = makeData;
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