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Handle the case if we set a timestamp field default to current time #284

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Handle the case if we set a timestamp field default to current time #284

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6 changes: 3 additions & 3 deletions package-lock.json
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2 changes: 1 addition & 1 deletion package.json
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
{
"name": "pg-mem",
"version": "2.6.4",
"version": "2.6.5",
"description": "A memory version of postgres",
"main": "index.js",
"scripts": {
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251 changes: 131 additions & 120 deletions src/datatypes/t-timestamp.ts
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@@ -1,138 +1,149 @@
import { DataType, nil, QueryError, _IType } from '../interfaces-private';
import { TypeBase } from './datatype-base';
import { Evaluator } from '../evaluator';
import moment from 'moment';
import { parseTime, nullIsh } from '../utils';
import { DataType, nil, QueryError, _IType } from "../interfaces-private";
import { TypeBase } from "./datatype-base";
import { Evaluator } from "../evaluator";
import moment from "moment";
import { parseTime, nullIsh } from "../utils";

export class TimestampType extends TypeBase<Date> {
constructor(
readonly primary: DataType,
readonly precision: number | null = null
) {
super();
}


constructor(readonly primary: DataType, readonly precision: number | null = null) {
super();
get name(): string {
if (!nullIsh(this.precision)) {
return `${this.primary}(${this.precision})`;
}

get name(): string {
if (!nullIsh(this.precision)) {
return `${this.primary}(${this.precision})`;
}
switch (this.primary) {
case DataType.timestamp:
return 'timestamp without time zone';
case DataType.timestamptz:
return 'timestamp with time zone';
case DataType.date:
return 'date';
case DataType.time:
return 'time without time zone';
case DataType.timetz:
return 'time with time zone';
}
return this.primary;
switch (this.primary) {
case DataType.timestamp:
return "timestamp without time zone";
case DataType.timestamptz:
return "timestamp with time zone";
case DataType.date:
return "date";
case DataType.time:
return "time without time zone";
case DataType.timetz:
return "time with time zone";
}
return this.primary;
}

doCanCast(to: _IType) {
switch (to.primary) {
case DataType.timestamp:
case DataType.timestamptz:
case DataType.date:
return this.primary !== DataType.time && this.primary !== DataType.timetz;
case DataType.time:
return this.primary !== DataType.date;
case DataType.timetz:
return this.primary !== DataType.date && this.primary !== DataType.timestamp;
}
return null;
doCanCast(to: _IType) {
switch (to.primary) {
case DataType.timestamp:
case DataType.timestamptz:
case DataType.date:
return (
this.primary !== DataType.time && this.primary !== DataType.timetz
);
case DataType.time:
return this.primary !== DataType.date;
case DataType.timetz:
return (
this.primary !== DataType.date && this.primary !== DataType.timestamp
);
}
return null;
}

doCanConvertImplicit(to: _IType) {
switch (to.primary) {
case DataType.timestamp:
return this.primary === DataType.timestamp
|| this.primary === DataType.date;
case DataType.timestamptz:
return this.primary !== DataType.time;
case DataType.date:
return this.primary === DataType.date;
case DataType.time:
return this.primary === DataType.time; // nothing can implicitly cast to time
}
return false;
doCanConvertImplicit(to: _IType) {
switch (to.primary) {
case DataType.timestamp:
return (
this.primary === DataType.timestamp || this.primary === DataType.date
);
case DataType.timestamptz:
return this.primary !== DataType.time;
case DataType.date:
return this.primary === DataType.date;
case DataType.time:
return this.primary === DataType.time; // nothing can implicitly cast to time
}
return false;
}

doCast(value: Evaluator, to: _IType) {
switch (to.primary) {
case DataType.timestamp:
case DataType.timestamptz:
return value;
case DataType.date:
return value
.setConversion(raw => moment.utc(raw).startOf('day').toDate()
, toDate => ({ toDate }));
case DataType.time:
case DataType.timetz:
return value
.setConversion(raw => moment.utc(raw).format('HH:mm:ss') + '.000000'
, toDate => ({ toDate }));
}
throw new Error('Unexpected cast error');
doCast(value: Evaluator, to: _IType) {
switch (to.primary) {
case DataType.timestamp:
case DataType.timestamptz:
return value;
case DataType.date:
return value.setConversion(
(raw) => moment.utc(raw).startOf("day").toDate(),
(toDate) => ({ toDate })
);
case DataType.time:
case DataType.timetz:
return value.setConversion(
(raw) => moment.utc(raw).format("HH:mm:ss") + ".000000",
(toDate) => ({ toDate })
);
}
throw new Error("Unexpected cast error");
}


doCanBuildFrom(from: _IType) {
switch (from.primary) {
case DataType.text:
return true;
}
return false;
doCanBuildFrom(from: _IType) {
switch (from.primary) {
case DataType.text:
return true;
}
return false;
}

doBuildFrom(value: Evaluator, from: _IType): Evaluator<Date> | nil {
switch (from.primary) {
case DataType.text:
switch (this.primary) {
case DataType.timestamp:
case DataType.timestamptz:
return value
.setConversion(str => {
const conv = moment.utc(str);
if (!conv.isValid()) {
throw new QueryError(`Invalid timestamp format: ` + str);
}
return conv.toDate()
}
, toTs => ({ toTs, t: this.primary }));
case DataType.date:
return value
.setConversion(str => {
const conv = moment.utc(str);
if (!conv.isValid()) {
throw new QueryError(`Invalid timestamp format: ` + str);
}
return conv.startOf('day').toDate();
}
, toDate => ({ toDate }));
case DataType.time:
case DataType.timetz:
return value
.setConversion(str => {
parseTime(str); // will throw an error if invalid format
return str;
}
, toTime => ({ toTime, t: this.primary }));
doBuildFrom(value: Evaluator, from: _IType): Evaluator<Date> | nil {
switch (from.primary) {
case DataType.text:
switch (this.primary) {
case DataType.timestamp:
case DataType.timestamptz:
return value.setConversion(
(str) => {
if (`${str}`.toLowerCase() === "now") {
return moment().toDate();
}
const conv = moment.utc(str);
if (!conv.isValid()) {
throw new QueryError(`Invalid timestamp format: ` + str);
}
return conv.toDate();
},
(toTs) => ({ toTs, t: this.primary })
);
case DataType.date:
return value.setConversion(
(str) => {
const conv = moment.utc(str);
if (!conv.isValid()) {
throw new QueryError(`Invalid timestamp format: ` + str);
}
return conv.startOf("day").toDate();
},
(toDate) => ({ toDate })
);
case DataType.time:
case DataType.timetz:
return value.setConversion(
(str) => {
parseTime(str); // will throw an error if invalid format
return str;
},
(toTime) => ({ toTime, t: this.primary })
);
}
return null;
}
return null;
}



doEquals(a: any, b: any): boolean {
return Math.abs(moment(a).diff(moment(b))) < 0.1;
}
doGt(a: any, b: any): boolean {
return moment(a).diff(moment(b)) > 0;
}
doLt(a: any, b: any): boolean {
return moment(a).diff(moment(b)) < 0;
}
}
doEquals(a: any, b: any): boolean {
return Math.abs(moment(a).diff(moment(b))) < 0.1;
}
doGt(a: any, b: any): boolean {
return moment(a).diff(moment(b)) > 0;
}
doLt(a: any, b: any): boolean {
return moment(a).diff(moment(b)) < 0;
}
}