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Option to use pre-shaped result rows; fixes #3042 #3043

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merged 6 commits into from
Aug 15, 2023
Merged

Option to use pre-shaped result rows; fixes #3042 #3043

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11955a0
Add property usePrebuiltEmptyResultObjects to Query constructor which…
Aug 11, 2023
c8abc18
Remove option and test for prebuiltEmptyResultObject
Aug 11, 2023
2172d4e
Remove errorneously added newline
Aug 11, 2023
cfff0b9
Move all logic for prebuilding objects to Result
Aug 11, 2023
2de4a4e
Move prebuilding to addFields
Aug 11, 2023
41533fd
Use a clone as clone-base
Aug 13, 2023
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13 changes: 10 additions & 3 deletions packages/pg/lib/result.js
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@ class Result {
if (this.rowAsArray) {
this.parseRow = this._parseRowAsArray
}
this._prebuiltEmptyResultObject = null
}

// adds a command complete message
Expand Down Expand Up @@ -60,14 +61,12 @@ class Result {
}

parseRow(rowData) {
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var row = {}
var row = { ... this._prebuiltEmptyResultObject }
for (var i = 0, len = rowData.length; i < len; i++) {
var rawValue = rowData[i]
var field = this.fields[i].name
if (rawValue !== null) {
row[field] = this._parsers[i](rawValue)
} else {
row[field] = null
}
}
return row
Expand All @@ -94,6 +93,14 @@ class Result {
this._parsers[i] = types.getTypeParser(desc.dataTypeID, desc.format || 'text')
}
}
this._createPrebuiltEmptyResultObject()
}
_createPrebuiltEmptyResultObject() {
var row = {};
for (var i = 0; i < this.fields.length; i++) {
row[this.fields[i].name] = null
}
this._prebuiltEmptyResultObject = row
}
}

Expand Down