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Add sqlite3.oo1.DB.selectValues(). Correct a logic error which could cause DB.selectValue(), DB.selectArray(), and DB.selectObject() to fail to finalize a statement if a call to bind() failed. Add more session API tests.

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FossilOrigin-Name: 6adc8a10146190037d55d3328d2f78aa5233559f88d4aa70fbbf9e10145b9b6c
This commit is contained in:
stephan
2022-12-25 22:44:13 +00:00
parent 3caf13f1cb
commit 9f1adb8c12
4 changed files with 109 additions and 38 deletions
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45
ext/wasm/api/sqlite3-api-oo1.js
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@ -463,22 +463,20 @@ self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
};
/**
Internal impl of the DB.selectArray() and
Internal impl of the DB.selectValue(), selectArray(), and
selectObject() methods.
*/
const __selectFirstRow = (db, sql, bind, getArg)=>{
let stmt, rc;
const __selectFirstRow = (db, sql, bind, ...getArgs)=>{
const stmt = db.prepare(sql);
try {
stmt = db.prepare(sql).bind(bind);
if(stmt.step()) rc = stmt.get(getArg);
return stmt.bind(bind).step() ? stmt.get(...getArgs) : undefined;
}finally{
if(stmt) stmt.finalize();
stmt.finalize();
}
return rc;
};
/**
Internal impl of the DB.selectArrays() and
Internal impl of the DB.selectvalues(), selectArrays(), and
selectObjects() methods.
*/
const __selectAll =
@ -1083,15 +1081,31 @@ self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
Throws on error (e.g. malformed SQL).
*/
selectValue: function(sql,bind,asType){
let stmt, rc;
return __selectFirstRow(this, sql, bind, 0, asType);
},
/**
Runs the given query and returns an array of the values from
the first result column of each row of the result set. The 2nd
argument is an optional value for use in a single-argument call
to Stmt.bind(). The 3rd argument may be any value suitable for
use as the 2nd argument to Stmt.get(). If a 3rd argument is
desired but no bind data are needed, pass `undefined` for the 2nd
argument.
If there are no result rows, an empty array is returned.
*/
selectValues: function(sql,bind,asType){
const stmt = this.prepare(sql), rc = [];
try {
stmt = this.prepare(sql).bind(bind);
if(stmt.step()) rc = stmt.get(0,asType);
stmt.bind(bind);
while(stmt.step()) rc.push(stmt.get(0,asType));
}finally{
if(stmt) stmt.finalize();
stmt.finalize();
}
return rc;
},
/**
Prepares the given SQL, step()s it one time, and returns an
array containing the values of the first result row. If it has
@ -1147,7 +1161,10 @@ self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
/**
Returns the number of currently-opened Stmt handles for this db
handle, or 0 if this DB instance is closed.
handle, or 0 if this DB instance is closed. Note that only
handles prepared via this.prepare() are counted, and not
handles prepared using capi.sqlite3_prepare_v3() (or
equivalent).
*/
openStatementCount: function(){
return this.pointer ? Object.keys(__stmtMap.get(this)).length : 0;
@ -1611,7 +1628,7 @@ self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
},
/**
Fetches the value from the given 0-based column index of
the current data row, throwing if index is out of range.
the current data row, throwing if index is out of range.
Requires that step() has just returned a truthy value, else
an exception is thrown.