Share sqlite2 database with Yii webapp - yii

Hi I've got a sqlite2 database that is being used by a PHP webapp and I want a Yii webapp to access it. At the moment I copied the db file to a local server and I've changed config/main.php to:
'db'=>array(
'connectionString' => 'sqlite:'.dirname(__FILE__).'/../data/thedatabase.db',
),
When I run the Gii model generator I get:
CDbException
CDbCommand failed to execute the SQL statement: CDbCommand failed to prepare the SQL statement: SQLSTATE[HY000]: General error: 26 file is encrypted or is not a database. The SQL statement executed was: SELECT DISTINCT tbl_name FROM sqlite_master WHERE tbl_name<>'sqlite_sequence'
BTW I am able to convert the database to SQL using
Exporting sqlite2 database to SQL
Though I want the database to stay as an sqlite2 database so that the Yii app can access up to date user info.

After some thought it looks like it would be simpler to just use some code from the old PHP project in the Yii project...
$db = sqlite_open($databasefilename, 0666, $sqliteerror);
$query = sqlite_query($db, "SELECT password FROM user WHERE username='$username'");
$row = sqlite_fetch_array($query);
if ($row) {
return $row[password];
}
Edit:
When using that code I get the following error:
undefined function sqlite_open()
I'm using PHP Version 5.4.7...
http://au1.php.net/manual/en/function.sqlite-open.php
Here it says:
PHP 5 < 5.4.0

I got it working with the sqlite2 database by using 'sqlite2:' instead of 'sqlite:'
'db2'=>array(
'class'=>'CDbConnection',
'connectionString' => 'sqlite2:'.dirname(__FILE__).'/../../../thedatabase.db',
),
I can do queries like this:
Yii::app()->db2->createCommand($sql)->queryAll());
To stop Error 500 Object configuration must be an array containing a "class" element 'class'=>'CDbConnection' is required in config/main.php. I think that info is already included in the first database connection somewhere.

Related

How to show a table from a SQL Server database by using SqlKata?

I am trying to show a table from a database in my SQL Server 2017 by using SqlKata.
I have browsed for some researches. Based from one of the articles, I need to write this command var books = db.Query("Books").Get();
My question here is: Where do we put the command in a C# .NETCoreApp 1.1 target framework file? And how to run to display out the result?
If you have a cast class use
var books = db.Query("Books").Get<YouClass>();
But you dont have cast class -> use
var books = db.Query("Books").Get<dynamic>();
If you want logging execute query, write code startup.cs
var db = new QueryFactory(connection, new SqlServerCompiler());
// Log the compiled query to the console
db.Logger = compiled => {
Console.WriteLine(compiled.ToString()); //NLog - GrayLog - API - DB - TextFile - more..
};
etc. https://sqlkata.com/docs/execution/logging

Creating a Sequelize Dialect for new Database

I'm pretty new to sequelize, though I've worked on node previously I did not use any ORM framework. At present I'm using new SQL DB(which is not supported by sequelize ) and want to connect it using node.js and sequelize( popular ORM for node.js ) by prototyping the existing dialects
The configuration is correct as I've tried it wihtout ORM.
The problem is after configuring the connection with properties the
sequelize.authenticate() doesn't throw any error but doesn't return a promise back
/**
* Test the connection by trying to authenticate
*
* #error 'Invalid credentials' if the authentication failed (even if the database did not respond at all...)
* #return {Promise}
*/
authenticate(options) {
return this.query('SELECT 1+1 AS result', _.assign({ raw: true, plain: true }, options)).return();
}
The return statement doesn't return anything. I've read this post how to create a new dialect. Though it says it is not encouraged to create a new dialect and throws an error if we try to, I think there must be a way to create because if it can be created for other SQL databases then may be there should be a way to do it. This is an open source project on github. Did anyone previously work on this any help is appreciated. Thanks in Advance
Only the 5 dialects are supported and an error will be thrown if you try and use NewSQL.
There is a lot of code in Sequelize to construct queries based on the dialect, so even if you could get past the error (such as forking the repo and changing it) the likelihood of everything working as you expect (or as is documented) is low.
I suggest posting an issue on GitHub to bring that dialect to the project.

PDO update column based on its current value not working

I have this PDO statement:
parent::$db->custom('UPDATE users_credits SET availabe = availabe - :reward_credits, used = used + :reward_credits WHERE user_id = :user_id', array(
'reward_credits' => $reward_credits,
'user_id' => $user_id
));
For some reasons it simply does not work. I tried the very same query on the DB manually and it works.
What's wrong with PDO and how do I achieve the very same result I would achieve normally?
Thanks for any suggestion
First of all. There is nothing wrong with PDO and never has been.
It is some your own custom code to blame.
Simple checklist to solve any PDO related problem
Make sure you can see all the PHP errors.
Configure PDO to throw exceptions in SQL errors, by calling this after connect
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
Debug your code.

Not able to connect to OpenOffice Base - User lacks privilege or object not found Exception

I am trying to connect to an OpenOffice Base database from Java and execute a query, and have not been able to.
These are the steps I followed:
1) Created a Database 'TestDB.odb' in OpenOffice, and a table 'Movies' with columns (ID, Name, Director)
2) Downloaded hsqldb jar file and inclued in project build path
3) Used the following code to connect to it:
String file_name_prefix = "C:/Documents and Settings/327701/My Documents/TestDB.odb";
Connection con = null;
Class.forName("org.hsqldb.jdbcDriver");
con = DriverManager.getConnection("jdbc:hsqldb:file:" + file_name_prefix, "sa","");
Statement statement = con.createStatement();
String query1 = "SELECT * FROM \"Movies\"";
ResultSet rs = statement.executeQuery(query1);
Althoug I'm able to connect to the Database, it throws the following exception on trying to execute the query:
org.hsqldb.HsqlException: user lacks privilege or object not found: Movies
Tried googling, but have not been able to resolve my problem. I'm stuck and it would be great if someone could guide me on how to fix this issue?
You cannot connect to an .odb database. The database you have connected to is in fact a separeate set of files with names such as TestDB.odb.script, etc.
Check http://user.services.openoffice.org/en/forum/viewtopic.php?f=83&t=17567 on how to use an HSQLDB database externally from OOo in server mode. You can connect to such databases with the HSQLDB jar.
OLD thread.
I lost 2 days of my life until I changed the property:
spring.jpa.properties.hibernate.globally_quoted_identifiers = false
I was using mysql before and then I changed to hsqldb in order to run some tests. I kinda copied and pasted this property without looking and then you know - Murphy's law ...
I hope it helps.

Need information about JPA based transaction for dynamic SQL table

Firstly, I would like to state our environment details.
We are trying to use EJB-hibernate with sql Azure to create apps on Azure cloud using Eclipse.
We needed to create and transact on databases dynamically. We are able to create databases dynamically. However, on trying to transact on these we are getting an error:
"java.sql.SQLException: No suitable driver found for connection url"
When we tried statically transacting using jpa was not a problem. However, dynamic transactions cannot be done. The entitymanager object is created but not able to connect database.
Could someone help us and explain how we can handle transactions using JPA for dynamically created databases.
Thanks,
Saugata
[edit] We are using the following persistence.xml:
>org.hibernate.ejb.HibernatePersistence
java:jboss/EDS</jta-data-source> -->
net.oauth.database.Co
net.oauth.database.Cr
value="org.hibernate.transaction.JTATransactionFactory" />
value="org.hibernate.transaction.JBossTransactionManagerLookup" />
Our code to connect to the db is as follows:
Map configOverrides = new HashMap();
configOverrides.put("hibernate.connection.password", "");
configOverrides.put("hibernate.connection.username", "");
configOverrides.put("hibernate.connection.driver_class","com.microsoft.sqlserver.jdbc.SQLServerDriver");
configOverrides.put("hibernate.connection.url", "jdbc:sqlsever://;" + "databaseName=;user=;password=");
EntityManagerFactory factory = Persistence.createEntityManagerFactory(ENTERPRISE_UNIT_NAME, configOverrides);
Please note that we are trying to create and connect to db dynamically and hence to do not the db created statically.
For this we are getting the error:
"java.sql.SQLException: No suitable driver found for connection url"
Create a persistence.xml with a persistence unit and put everything there which is static (eg database dialect, logging parameters, etc.)
Then use the following method to create the entity manager:
javax.persistence.Persistence.createEntityManagerFactory(String persistenceUnitName, Map properties);
Supply the variable parameters in the map, like this:
properties.put("hibernate.connection.url", "jdbc:postgresql://127.0.0.1/test");
properties.put("hibernate.connection.username", "joe");
properties.put("hibernate.connection.password", "pass");