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oo1.DB.exec() rowMode="$columnName": a minor optimization and a preemtive fix for a hypothetical corner-case bug.

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FossilOrigin-Name: 0b2df22bd92914708ad0851d0401ad2cf3edb1968b88b2c07fe40792a731c5ba
This commit is contained in:
stephan
2022-12-24 11:16:49 +00:00
parent 0cdc01d01a
commit 4b4ae86445
3 changed files with 19 additions and 20 deletions
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25
ext/wasm/api/sqlite3-api-oo1.js
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@ -439,23 +439,22 @@ self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
if(util.isInt32(opt.rowMode)){
out.cbArg = (stmt)=>stmt.get(opt.rowMode);
break;
}else if('string'===typeof opt.rowMode && opt.rowMode.length>1){
}else if('string'===typeof opt.rowMode
&& opt.rowMode.length>1
&& '$'===opt.rowMode[0]){
/* "$X": fetch column named "X" (case-sensitive!). Prior
to 2022-12-14 ":X" and "@X" were also permitted, but
having so many options is unnecessary and likely to
cause confusion. */
if('$'===opt.rowMode[0]){
out.cbArg = function(stmt){
const rc = stmt.get(this.obj)[this.colName];
return (undefined===rc)
? toss3("exec(): unknown result column:",this.colName)
: rc;
}.bind({
obj:Object.create(null),
colName: opt.rowMode.substr(1)
});
break;
}
const $colName = opt.rowMode.substr(1);
out.cbArg = (stmt)=>{
const rc = stmt.get(Object.create(null))[$colName];
return (undefined===rc)
? toss3(capi.SQLITE_NOTFOUND,
"exec(): unknown result column:",$colName)
: rc;
};
break;
}
toss3("Invalid rowMode:",opt.rowMode);
}