tdengine-client
Version:
A Node.js connector for TDengine.
268 lines (240 loc) • 10.4 kB
JavaScript
const ref = require('ref-napi');
const { TDError } = require('./error');
const { TAOS_MULTI_BIND, TaosMultiBind } = require('./taosMultiBind');
const TAOS_MULTI_BIND_SIZE = TAOS_MULTI_BIND.size;
class TaosMultiBindArr extends TaosMultiBind {
/**
* The constructor，initial basic parameters and alloc buffer.
* @param {*} numOfColumns the number of column that you want to bind parameters.
*/
constructor(numOfColumns) {
super();
this.taosMBindArrBuf = Buffer.alloc(numOfColumns * TAOS_MULTI_BIND_SIZE);
this.index = 0;
this.bound = numOfColumns;
}
/**
* Used to bind boolean column's values.
* @param {*} boolArray An array of bool value,
* represents the bool values you want to bind.
*/
multiBindBool(boolArray) {
if (this.bound > this.index) {
let mBindBool = super.multiBindBool(boolArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindBool);
this.index += 1;
} else {
throw new TDError(`multiBindArrBool() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind tiny int column's values.
* @param {*} tinyIntArray An array of tiny int value.
* represents the tiny int values you want to bind.
*/
multiBindTinyInt(tinyIntArray) {
if (this.bound > this.index) {
let mBindTinyInt = super.multiBindTinyInt(tinyIntArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindTinyInt);
this.index += 1;
} else {
throw new TDError(`multiBindArrTinyInt() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind small int column's value.
* @param {*} smallIntArray An array of small int values,
* represents the small int values you want to bind.
*/
multiBindSmallInt(smallIntArray) {
if (this.bound > this.index) {
let mBindSmallInt = super.multiBindSmallInt(smallIntArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindSmallInt);
this.index += 1;
} else {
throw new TDError(`multiBindSmallInt() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind int column's value.
* @param {*} intArray An array of int values,
* represents the int values you want to bind.
*/
multiBindInt(intArray) {
if (this.bound > this.index) {
let mBindInt = super.multiBindInt(intArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindInt);
this.index += 1;
} else {
throw new TDError(`multiBindInt() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind big int column's value.
* @param {*} bigIntArray An array of big int values,
* represents the big int values you want to bind.
*/
multiBindBigInt(bigIntArray) {
if (this.bound > this.index) {
let mBindBigInt = super.multiBindBigInt(bigIntArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindBigInt);
this.index += 1;
} else {
throw new TDError(`multiBindBigInt() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind float column's value.
* @param {*} floatArray An array of float values,
* represents the float values you want to bind.
*/
multiBindFloat(floatArray) {
if (this.bound > this.index) {
let mBindFloat = super.multiBindFloat(floatArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindFloat);
this.index += 1;
} else {
throw new TDError(`multiBindFloat() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind double column's value.
* @param {*} doubleArray An array of double values,
* represents the double values you want to bind.
*/
multiBindDouble(doubleArray) {
if (this.bound > this.index) {
let mBindDouble = super.multiBindDouble(doubleArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindDouble);
this.index += 1;
} else {
throw new TDError(`multiBindDouble() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind binary column's value.
* @param {*} strArr An array of binary(string) values,
* represents the binary values you want to bind.
* Notice '' is not equal to TDengine's "null" value.
*/
multiBindBinary(strArr) {
if (this.bound > this.index) {
let mBindBinary = super.multiBindBinary(strArr);
// console.log("mBindBinary:"+JSON.stringify(mBindBinary));
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindBinary);
this.index += 1;
} else {
throw new TDError(`multiBindBinary() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind timestamp column's values.
* @param {*} timestampArray An array of timestamp values,
* represents the timestamp values you want to bind.
*/
multiBindTimestamp(timestampArray) {
if (this.bound > this.index) {
let mBindTimestamp = super.multiBindTimestamp(timestampArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindTimestamp);
this.index += 1;
} else {
throw new TDError(`multiBindArrTimestamp() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind nchar column's value.
* @param {*} strArr An array of nchar(string) values,
* represents the nchar values you want to bind.
* Notice '' is not equal to TDengine's "null" value.
*/
multiBindNchar(strArr) {
if (this.bound > this.index) {
let mBindNchar = super.multiBindNchar(strArr);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindNchar);
this.index += 1;
} else {
throw new TDError(`multiBindNchar() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind JSON tag column's value.
* @param {*} strArr An array of JSON (string) values,
* represents the JSON values you want to bind.
*/
multiBindJSON(strArr) {
if (this.bound > this.index) {
let mBindNchar = super.multiBindJSON(strArr);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindNchar);
this.index += 1;
} else {
throw new TDError(`multiBindJSON() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind unsigned tiny int column's value.
* @param {*} uTinyIntArray An array of unsigned tiny int values,
* represents the unsigned tiny int values you want to bind.
*/
multiBindUTinyInt(uTinyIntArray) {
if (this.bound > this.index) {
let mBindNchar = super.multiBindUTinyInt(uTinyIntArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindNchar);
this.index += 1;
} else {
throw new TDError(`multiBindUTinyInt() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind unsigned small int column's value.
* @param {*} uSmallIntArray An array of unsigned small int value,
* represents the unsigned small int values you want to bind.
*/
multiBindUSmallInt(uSmallIntArray) {
if (this.bound > this.index) {
let mBindUSmallInt = super.multiBindUSmallInt(uSmallIntArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindUSmallInt);
this.index += 1;
} else {
throw new TDError(`multiBindUSmallInt() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind unsigned int column's value.
* @param {*} uIntArray An array of unsigned int column's value,
* represents the unsigned int values you want to bind.
*/
multiBindUInt(uIntArray) {
if (this.bound > this.index) {
let mBindUInt = super.multiBindUInt(uIntArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindUInt);
this.index += 1;
} else {
throw new TDError(`multiBindUInt() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
/**
* Used to bind unsigned big int column's value.
* @param {*} uBigIntArray An array of unsigned big int column's value,
* represents the unsigned big int values you want to bind.
*/
multiBindUBigInt(uBigIntArray) {
if (this.bound > this.index) {
let mBindUBigInt = super.multiBindUBigInt(uBigIntArray);
TAOS_MULTI_BIND.set(this.taosMBindArrBuf, this.index * TAOS_MULTI_BIND_SIZE, mBindUBigInt);
this.index += 1;
} else {
throw new TDError(`multiBindUBigInt() failed,since index:${this.index} is out of Buffer bound ${this.bound}.`)
}
}
// multiBJson(jsonArray) no need to support.Since till now TDengine only support json tag
// and there is no need to support bind json tag in TAOS_MULTI_BIND.
/**
* After all the parameters have been prepared and stored
* in the buffer, Call this method to get the buffer.
* @returns return the buffer which stores all the parameters.
*/
getMultiBindArr() {
return this.taosMBindArrBuf;
}
}
module.exports = TaosMultiBindArr;