Integrate PostgreSQL with Tick Tick

What are Postgres and TickTick

PostgreSQL is an object-relational database management system (ORDBMS. with an emphasis on extensibility and standards compliance. It was created by Bruce Momjian, who had worked on Ingres, a predecessor of Postgres. PostgreSQL is free and open-source software.[6]

TickTick is a to-do application developed by Minutia Inc. in 2011. It is available for iOS, Android, Windows Phone, Windows, MacOS and web browsers.[7]

How are PostgreSQL and TickTick different from each other

PostgreSQL is an open source relational database that can handle large amounts of data across many servers. It is used for many tasks such as storing data, managing large sets of information, and analyzing data. The users are able to change a database’s structure without having to alter the code used to access it.

The TicktTick application is a task management app that serves as a personal assistant for people. It tracks and reminds the user the things they need to do. It allows users to organize their daily plan and schedule, create tasks, and set alarms.

How do PostgreSQL and TickTick integrate with each other

There are three ways on how PostgreSQL integrates with Ticky. via a SQL/JDBC driver, via Object/Relational Mapping (ORM), and via Stored Procedure. Through SQL/JDBC driver, the user will be able to query the data from PostgreSQL from within the application. ORM is an alternative to JDBC; it provides object-oriented programming interface for accessing the database. With stored procedures, the user can create and store procedures, functions, and packages that run on the server side of an application.

Introduction to Integration of PostgreSQL and TickTick via SQL/JDBC Driver

PostgreSQL is a powerful database system that has many clients applications that can use it. For example, there is a connection called JDBC that allows Java applications to connect to PostgreSQL through the Java Database Connectivity (JDBC. API. JDBC supports a number of relational databases including Oracle 10g and IBM DB2. There is also another driver called ODBC that allows Perl scripts or computer programs access the data of different databases. Many open source projects are using this driver such as PHPMyAdmin, MySQLDumper, phpPgAdmin, and MySQL Visual Browser. So now let us see how TickTick uses these two drivers to integrate with PostgreSQL.[8]

Integration of PostgreSQL and TickTick via SQL/JDBC Driver

Since JDBC driver supports various databases, it is easy for developers to develop a top that can migrate data from one database to another. This way, developers are able to move data between different RDBMS products. In addition, JDBC supports a universal syntax for querying databases. Thus it enables developers to move data from different databases into a single application.[9] Since JDBC driver supports various databases, it is easy for developers to develop a top that can migrate data from one database to another. This way, developers are able to move data between different RDBMS products. In addition, JDBC supports a universal syntax for querying databases. Thus it enables developers to move data from different databases into a single application. [10] Once JDBC driver is installed on your machine or you have access to it via web service such as Heroku or Amazon Web Services (AWS), you can start moving your data into PostgreSQL using the fplowing steps. Start off by installing the JDBC driver named postgresql-jdbc-3.0-801-jre14 under your Java development path (JRE_HOME. then start up your IDE i.e. eclipse by executing “java -jar eclipse.jar” under your eclipse home fpder. You can find this fpder in your computer’s root directory usually C:drive under Windows or Linux OS, or under /Users/home/... under Mac OS X environment. If you already have Eclipse running, just switch to another workspace by selecting File -> Switch Workspace -> Other if you are using Eclipse Luna or File -> Open Location -> Browse fpder if you are using Eclipse Mars. Right click on your project name under Project Explorer tab and select Properties menu item then go to Java Build Path -> Libraries and add postgresql-jdbc-3.0-801-jre14 jar file into Library Tab i.e., Add External JARs then press OK button at the bottom of the dialog box. After that go back to Project Explorer window and write import statement into your Java class where you want to use this driver in your program code like below. import org . postgresql . jdbc3 . Jdbc4Driver ; Then add a new java class into your project named “PostgresConnection” which extends org . postgresql . jdbc3 . Connection so we can instantiate PostgreSQL connection object from our java program then use this object to connect the database table from java program via the fplowing code snippet . package com . myapp ; import org . postgresql . jdbc3 . Jdbc4Driver ; public class PostgresConnection extends Connection { private static String dbURL = "jdbc:postgresql://localhost:5432/" ; public static void main ( String [] args . throws NamingException , SQLException , ClassNotFoundException { String username = "postgres" ; String password = "postgres" ; String dbname = "my_database" ; String url = dbURL + dbname ; Connection con = DriverManager . getConnection ( url , username , password ); } } Now press Ctrl + Shift + O keyboard shortcut then fill in “PostgresConnection” as your class name then press Enter key then select Groovy as language for this class then click Finish button as shown in figure 1 below. Figure 1. Selecting Groovy as language for this class Now you have new Groovy class named “PostgresConnection” which we can use in our java application that runs on PostgreSQL server by adding groovy dependency in you pom.xml file since groovy-all artifact is not required here since we only need groovy script engine like below. <dependency> <groupId> org . codehaus . groovy </groupId> <artifactId> groovy - all </artifactId> <version> 2.0 . 7 </version> </dependency> Now paste the fplowing code snippet in your groovy file named “postgresConnectionsensor” . package com . myapp import groovy . sql . Sql def con = new Sql ( "POSTGRES_DRIVER_CLASS_NAME" , "org.postgresql.Driver" . def conn = con . getConnection (. def stmt = conn . prepareStatement ( "{call myFunction(?,?,?)}" . stmt . setString ( 1 , "param1" . stmt . setString ( 2 , "param2" . stmt . setString ( 3 , "param3" . stmt . executeQuery (. conn . close (. A quick explanation about above code snippet. Since groovy scripts run on JVM runtime environment therefore we use groovy dependency in our pom file otherwise we will get NoClassDefFoundError error when compiling our groovy file because java classes don’t exist in JVM runtime but we need them because we want to call java methods through groovy not through python methods which exist in groovy runtime environment so we must add java dependency first before adding groovy dependency then we can use java classes in our groovy files through reflection mechanism of groovy itself so we will see more examples later on how we can use java classes in our groovy scripts which run on JVM runtime environment through reflection mechanism provided by groovy itself then we instantiated an object named “con” which extends Sql class provided by JDBC driver then we connected our java program with PostgreSQL server using this connection object named “con” that we created previously then we created prepared statement with the help of method named “setXXX()” where XXX indicates string parameter type then we passed different parameters through it then we executed this prepared statement through method named “executeQuery()” provided by Connection object that we created earlier then we closed our connection object by calling its method named “close()” which is similar to JDBC Connection object but this one does not release any resources i.e., close(. method does not close any

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