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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 });
const bn_1 = require("../util/bn");
const column_1 = require("../column");
const vector_1 = require("../vector");
const visitor_1 = require("../visitor");
const enum_1 = require("../enum");
const recordbatch_1 = require("../recordbatch");
const enum_2 = require("../enum");
const bit_1 = require("../util/bit");
const args_1 = require("../util/args");
const type_1 = require("../type");
/** @ignore */
class JSONVectorAssembler extends visitor_1.Visitor {
/** @nocollapse */
static assemble(...args) {
return new JSONVectorAssembler().visitMany(args_1.selectColumnChildrenArgs(recordbatch_1.RecordBatch, args));
}
visit(column) {
const { data, name, length } = column;
const { offset, nullCount, nullBitmap } = data;
const type = type_1.DataType.isDictionary(column.type) ? column.type.indices : column.type;
const buffers = Object.assign([], data.buffers, { [enum_1.BufferType.VALIDITY]: undefined });
return {
'name': name,
'count': length,
'VALIDITY': type_1.DataType.isNull(type) ? undefined
: nullCount <= 0 ? Array.from({ length }, () => 1)
: [...bit_1.iterateBits(nullBitmap, offset, length, null, bit_1.getBit)],
...super.visit(vector_1.Vector.new(data.clone(type, offset, length, 0, buffers)))
};
}
visitNull() { return {}; }
visitBool({ values, offset, length }) {
return { 'DATA': [...bit_1.iterateBits(values, offset, length, null, bit_1.getBool)] };
}
visitInt(vector) {
return {
'DATA': vector.type.bitWidth < 64
? [...vector.values]
: [...bigNumsToStrings(vector.values, 2)]
};
}
visitFloat(vector) {
return { 'DATA': [...vector.values] };
}
visitUtf8(vector) {
return { 'DATA': [...vector], 'OFFSET': [...vector.valueOffsets] };
}
visitBinary(vector) {
return { 'DATA': [...binaryToString(vector)], OFFSET: [...vector.valueOffsets] };
}
visitFixedSizeBinary(vector) {
return { 'DATA': [...binaryToString(vector)] };
}
visitDate(vector) {
return {
'DATA': vector.type.unit === enum_2.DateUnit.DAY
? [...vector.values]
: [...bigNumsToStrings(vector.values, 2)]
};
}
visitTimestamp(vector) {
return { 'DATA': [...bigNumsToStrings(vector.values, 2)] };
}
visitTime(vector) {
return {
'DATA': vector.type.unit < enum_2.TimeUnit.MICROSECOND
? [...vector.values]
: [...bigNumsToStrings(vector.values, 2)]
};
}
visitDecimal(vector) {
return { 'DATA': [...bigNumsToStrings(vector.values, 4)] };
}
visitList(vector) {
return {
'OFFSET': [...vector.valueOffsets],
'children': vector.type.children.map((f, i) => this.visit(new column_1.Column(f, [vector.getChildAt(i)])))
};
}
visitStruct(vector) {
return {
'children': vector.type.children.map((f, i) => this.visit(new column_1.Column(f, [vector.getChildAt(i)])))
};
}
visitUnion(vector) {
return {
'TYPE': [...vector.typeIds],
'OFFSET': vector.type.mode === enum_2.UnionMode.Dense ? [...vector.valueOffsets] : undefined,
'children': vector.type.children.map((f, i) => this.visit(new column_1.Column(f, [vector.getChildAt(i)])))
};
}
visitInterval(vector) {
return { 'DATA': [...vector.values] };
}
visitFixedSizeList(vector) {
return {
'children': vector.type.children.map((f, i) => this.visit(new column_1.Column(f, [vector.getChildAt(i)])))
};
}
visitMap(vector) {
return {
'OFFSET': [...vector.valueOffsets],
'children': vector.type.children.map((f, i) => this.visit(new column_1.Column(f, [vector.getChildAt(i)])))
};
}
}
exports.JSONVectorAssembler = JSONVectorAssembler;
/** @ignore */
function* binaryToString(vector) {
for (const octets of vector) {
yield octets.reduce((str, byte) => {
return `${str}${('0' + (byte & 0xFF).toString(16)).slice(-2)}`;
}, '').toUpperCase();
}
}
/** @ignore */
function* bigNumsToStrings(values, stride) {
for (let i = -1, n = values.length / stride; ++i < n;) {
yield `${bn_1.BN.new(values.subarray((i + 0) * stride, (i + 1) * stride), false)}`;
}
}
//# sourceMappingURL=jsonvectorassembler.js.map
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