cordova s​​qlite数据库问题，似乎无法创建/写入表

Question

我的代码有三个具体问题，在代码底部进行了评论。此外，我的浏览器的控制台显示数据库打开，等待事务和打开。

控制台响应：

OPEN database: myapp.db  
CT: registering tables  
new transaction is waiting for open operation  
DB opened: myapp.db  
Avar: 1 
CT: CHECKING myapp table  
Bvar: 1  
A1 Success: {"rows":{"length":0},"rowsAffected":0} 
B1 Success: , {"rows":{"length":0},"rowsAffected":0} 
Error processing SQL: 0, a statement error callback did not return false: no such table: myInfo (code 1): , 
while compiling: SELECT * FROM myInfo
################################################################# 
Error Code : 1 (SQLITE_ERROR) Caused By : SQL(query) error or missing database.     (no such table: myInfo (code 1): , while compiling: SELECT
* FROM myInfo)
#################################################################

OPEN database: myapp.db CT: registering tables new transaction is waiting for open operation DB opened: myapp.db Avar: 1 CT: CHECKING myapp table Bvar: 1 A1 Success: {"rows":{"length":0},"rowsAffected":0} B1 Success: , {"rows":{"length":0},"rowsAffected":0} Error processing SQL: 0, a statement error callback did not return false: no such table: myInfo (code 1): , while compiling: SELECT * FROM myInfo ################################################################# Error Code : 1 (SQLITE_ERROR) Caused By : SQL(query) error or missing database. (no such table: myInfo (code 1): , while compiling: SELECT * FROM myInfo) #################################################################

function isRegistered() {
  var db = window.sqlitePlugin.openDatabase({name: "my.db"});
  console.log("CT: registering tables") ;
  db.transaction(checkTable, errorCB,function(){
    console.log("Success") ;
  });
}

function isTableExists(tx, tableName, callback) {
  tx.executeSql('SELECT * FROM '+tableName, [], function(tx, resultSet) {
    if (resultSet.rows.length <= 0) {
        callback(false,0);
    } else {
        callback(true,2);
    }
  }, function(err) {
      callback(false,1);
  })
};

function checkTable(tx) {
  // create table
  isTableExists(tx, "myInfo", function(status,avar) {
    console.log("Avar: "+avar) ;
    if (!status) {
      console.log("CT: CHECKING myInfo") ;
      tx.executeSql("CREATE TABLE IF NOT EXISTS myInfo ('id' INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL UNIQUE,'name' VARCHAR,'phone' VARCHAR,'email' VARCHAR,'fbID' VARCHAR,'fbToken' VARCHAR,'regCode' VARCHAR)",[],function(tx,res) {
        console.log("A1 Success: "+JSON.stringify(res)) ;
        tx.executeSql('INSERT INTO myInfo VALUES (?,?,?,?,?,?,?)',[0,"","","","","",""],function(res) {
          console.log("A2 Success: " + JSON.stringify(res) + " -- probably 1");
        }, function(err) {
          console.log("A2 fail: "+JSON.stringify(err)) ;
        }) ;
      },function(err) {
        console.log("A1 Fail : "+ JSON.stringify(err)) ;
      }) ;
    }
  }, function(err){
    console.log("A Fail: "+JSON.stringify(err)) ;
  }) ;
  isTableExists(tx, "mySettings", function(status,bvar) {
      console.log("Bvar: "+bvar) ;
      if (!status) {
      tx.executeSql('CREATE TABLE IF NOT EXISTS "mySettings" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL UNIQUE,"vendor" VARCHAR,"display" VARCHAR,"aggregate" VARCHAR)',[],function(tx,res) {
        console.log("B1 Success: , "+ JSON.stringify(res)) ;
        var vendors = ["General","Twist","Unter","Sobi"] ;
        for (var n=0;n<vendors.length;n++) {
          tx.executeSql('INSERT INTO mySettings (id,vendor,display,aggregate) VALUES (?,?,?,?);',["","","",""],function(res) {
            console.log("B2 Success: " + n + " : " + JSON.stringify(res)) ;
          },function(err) {
            console.log("B2 Fail: "+JSON.stringify(err)) ;
          }) ;
        }        
      },function(err) {
          console.log("B1 Fail: "+JSON.stringify(err)) ;
      }) ;
    }
  }, function(err){
    console.log("B Fail: "+JSON.stringify(err)) ;
  }) ;
}

/* three issues:
1.  everytime I execute the app, it "creates" the tables...it should only do it once.  Avar & Bvar are returning "1" every time
2. The next tx.executeSql("INSERT...is not triggering (that I can tell).
3. Getting general error from isRegistered(...errorCB...); - which I believe is coming from function isTableExists()
Error processing SQL: 0, a statement error callback did not return false: no such table: myInfo (code 1): , while compiling: SELECT * FROM myInfo
#################################################################
Error Code : 1 (SQLITE_ERROR)
Caused By : SQL(query) error or missing database.
    (no such table: myInfo (code 1): , while compiling: SELECT * FROM myInfo)
#################################################################
*/

Answer 1

尝试使用同步事务 db.executeSql 或 db.sqlBatch （请参阅。https://www.npmjs.com/package/cordova-sqlite-storage）。

function isRegistered() {
    var db = window.sqlitePlugin.openDatabase({name: "my.db"});
    populateDB(db);
}

function isTableExists(db, tableName, callback) {
    db.executeSql('SELECT * FROM ' + tableName, [], function (res) {
        callback(true);
    }, function (err) {
        callback(false);
    });
}

function populateDB(db) {
    isTableExists(db, "mySettings", function (status) {
        if (!status) {
            db.sqlBatch([
                'CREATE TABLE IF NOT EXISTS "mySettings" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL UNIQUE,"vendor" VARCHAR,"display" VARCHAR,"aggregate" VARCHAR)',
                ['INSERT INTO mySettings (id,vendor,display,aggregate) VALUES (?,?,?,?)', ["","","",""]]
            ], function () {
            }, function (error) {
                console.log('Populate table error: ' + error.message);
            });
        }
    });
}