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hedera-web-mindshore/js/sql/value.js

128 lines
2.2 KiB
JavaScript

var Expr = require('./expr');
/**
* The equivalent of a SQL value.
**/
module.exports = new Class({
Extends: Expr
,Tag: 'sql-value'
,Properties:
{
/**
* The master param.
**/
param:
{
type: Vn.Param
,set: function(x) {
this.link({_param: x}, {'changed': this.onParamChange});
this.onParamChange();
}
,get: function() {
return this._param;
}
},
/**
* The value.
**/
value:
{
type: String
,set: function(x) {
if (Vn.Value.compare(x, this._value))
return;
if (x instanceof Date)
x = x.clone();
this._value = x;
if (this._param && !this.paramLock) {
this.paramLock = true;
this._param.value = x;
this.paramLock = false;
}
this.signalEmit('changed');
}
,get: function() {
return this._value;
}
}
}
,_value: undefined
,_param: null
,regexp: new RegExp('(\\\\)|\'', 'g')
,paramLock: false
,onParamChange: function() {
if (this.paramLock || !this._param)
return;
this.paramLock = true;
this.value = this._param.value;
this.paramLock = false;
}
,isReady: function() {
return this._value !== undefined;
}
,replaceFunc: function(token) {
switch (token) {
case '\\': return '\\\\';
case '\'': return '\\\'';
}
return token;
}
,render: function() {
var v = this._value;
switch (typeof v) {
case 'number':
return v;
case 'boolean':
return (v) ? 'TRUE' : 'FALSE';
case 'string':
return "'" + v.replace(this.regexp, this.replaceFunc) + "'";
default:
if (v instanceof Date) {
if (!isNaN(v.getTime())) {
var unixTime = parseInt(fixTz(v).getTime() / 1000);
return 'DATE(FROM_UNIXTIME('+ unixTime +'))';
} else
return '0000-00-00'
} else
return 'NULL';
}
}
});
// TODO: Read time zone from db configuration
var tz = {timeZone: 'Europe/Madrid'};
var isLocal = Intl
.DateTimeFormat()
.resolvedOptions()
.timeZone == tz.timeZone;
function fixTz(date) {
if (isLocal) return date;
var hasTime = date.getHours()
|| date.getMinutes()
|| date.getSeconds()
|| date.getMilliseconds();
if (!hasTime) {
date = new Date(date.getTime());
date.setHours(12, 0, 0, 0);
}
return date;
}