Difference between revisions of "NexJ Express Connecting to PostgreSQL"

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<big><big> PostgreSQL Adapter for NexJ - Create Test Environment </big></big>
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{{Admon/obsolete}}
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{{NexJ_Express Index}}
 
  
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=== 1- Setup the postgresql-connection ===
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[[category: NexJ Express PostgreSQL]][[Category:NexJ_Express_Development]][[category: NexJ Express]]
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For testing the connection, the 'PostgreSQLAdapterTest.java' is being used.
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* [[PostgreSQL_Adapter-nexj/test-env/todo |TODOs]]
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== Task Summary ==
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* Done
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{| border="1" cellpadding="4" cellspacing="2" style="border: 1px solid black;border-collapse:collapse;"
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: Installed the <code> JDBC3 Postgresql Driver, Version 9.0-801 </code> and added it to the libraries in JDK
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|-
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! Task
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! Status
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|-
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| Install the PostgreSQL Server
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| DONE
 +
|-
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| Install PostgreSQL driver
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| DONE
 +
|-
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| Add code to connect to server
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| DONE
 +
|-
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| Create Script for Test database
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| DONE
 +
|-
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| Test connection to the server
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| DONE
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|-
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| Configure UnitTests for multiple DB's
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|
 +
|}
 +
 
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== Task Details ==
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=== Install PostgreSQL ===
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Download: <code>Version 9.0</code> from list of [http://www.enterprisedb.com/products/pgdownload.do#windows PostgreSQL downloads].
 +
 
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=== Install PostgreSQL JDBC3 driver ===
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Download: <code> JDBC3 Postgresql Driver, Version 9.0-801 </code> @ http://jdbc.postgresql.org/download.html
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<br/>Install: Copy driver to <code>[jdk folder]/jre/lib/ext</code>
 +
 
 +
=== Code: Add PostgreSQL Driver ===
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Package: <code>nexj.core.persistance.sql</code>
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:Create <code>PostgreSQLAdapter.java</code> by extending <code>SQLAdapter</code>
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:Create <code>PostgreSQLSchemaManager.java</code> by extending <code>SQLSchemaManager</code>
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:Edit <code>RelationalDatabase.java</code>
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:Edit <code>RelationalDatabaseFragment.java</code>
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:Edit <code>SQLSchemaManagerFactory.java</code>
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Package: <code>nexj.core.meta.sys</code>
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:Edit <code>system.dstypes</code>
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=== SQL Scripts ===
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Package: <code>nexj.core.persistence.sql.script</code>
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:Create
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* <code>postgresql_setup.sql</code>
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* <code>postgresql_drop.sql</code>
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* <code>postgresql_insert.sql</code>
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* <code>postgresql_upd_addr.sql</code>
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* <code>postgresql_upd_cont.sql</code>
 +
 
 +
=== UnitTest: Test Connectivity to database ===
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Package: <code>nexj.core.persistance.sql</code>
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:Create <code>PostgreSQLAdapterTest.java</code> by extending <code>SQLAdapterTest</code>
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:Create <code>PostgreSQLSchemaManagerTest.java</code> by extending <code>SQLSchemaManagerTest</code>
 +
 
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Package: <code>nexj</code>
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:Create <code>postgresql.connections</code> using NexJ Studio
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:Edit <code>default.config</code> to use PostgreSQL
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:Edit all <code>*.connections</code> files to use PostgreSQL
 +
 
 +
===Configure UnitTests for more than one Database===
 +
 
 +
<!--
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== Setup the postgresql-connection ==
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For testing the connection, the 'AllTests.java' is being used.
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: Installed the <code> Installer version Version 9.0.1-1</code> from list of [http://www.enterprisedb.com/products/pgdownload.do#windows PostgreSQL downloads].
 +
: Installed the <code> JDBC3 Postgresql Driver, Version 9.0-801 </code> @ http://jdbc.postgresql.org/download.html and added it to the libraries in JDK
 
:: The driver class which is being used for NexJ Express Model is: <code> org.postgresql.xa.PGXADataSource </code>
 
:: The driver class which is being used for NexJ Express Model is: <code> org.postgresql.xa.PGXADataSource </code>
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:: The driver is loaded from RelationalDatabaseFragment.java
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:: The driver is loaded from RelationalDatabaseFragment.java and RelationalDatabase.java
 
: Metadata is loaded from the particular driver
 
: Metadata is loaded from the particular driver
 
::
 
::
Line 25: Line 92:
 
       props.setProperty(XMLMetadataLoader.CONNECTIONS_URL_PROPERTY, "/nexj/" + sAdapter.toLowerCase(Locale.ENGLISH) + ".connections");  // sets the properties to postgresql.connection
 
       props.setProperty(XMLMetadataLoader.CONNECTIONS_URL_PROPERTY, "/nexj/" + sAdapter.toLowerCase(Locale.ENGLISH) + ".connections");  // sets the properties to postgresql.connection
 
</source>
 
</source>
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: After all properties are loaded, it creates the connection through Connection Factory files.
  
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: Configured the work/ws/core/test/nexj/postgresql.connection
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===Files to Configure===
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: Configured system.dstype
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'''NOTE''': Changes to these files are involved with '''1-Port''', which should be: 5432, and '''2- Driver package''' that should change to  <code> org.postgresql.xa.PGXADataSource </code>
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: Configured DatabaseTool.java  // This file calles SQLSchemaMangerFactory.java and creates the connection
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: src
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: Configured RelationalDatabase.java // Sets the default properties for the supported drivers
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:: system.dstype
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: Configured RelationalDatabaseFragment.java // Sets the custom fragment properties for the supported drivers
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:: DatabaseTool.java  // This file calles SQLSchemaMangerFactory.java and creates the connection
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: Configured Driver type and some other properties in JDBCInfo.java
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:: RelationalDatabase.java // Sets the default properties for the supported drivers
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: Configured : SQLSchemaManagerFactory.java
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:: RelationalDatabaseFragment.java // Sets the custom fragment properties for the supported drivers
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:: Driver type and some other properties in JDBCInfo.java
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=== 2- Create a PostgreSQL database through some scripts===
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:: SQLSchemaManagerFactory.java // Sets the connection for the particular adapter type
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: Through the process in postgresql_setup.sql:
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: test
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:: A database called 'test is created in PostgreSQL : <code> CREATE DATABASE test </code>
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:: AllTests.java
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:: To create a <code>user</code> along with <code>password</code>: <code> CREATE USER test WITH PASSWORD 'test'; </code>
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:: default.config  // change to these four files are: adapter="PostgreSQL" port="5432"
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:: Login to the database 'test' with username 'test': <code> psql -U test test </code>
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:: postgresql.connection
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:: Create a <code> Schema </code> called 'test' inside the database 'test' with particular owner 'test': <code> CREATE SCHEMA test AUTHORIZATION test;</code>
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:: filestorage.connections
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:: Create a <code>table</code> called 'mutex' with primary key: <code> CREATE TABLE test.mutex(id INT PRIMARY KEY); </code>
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::filestoragefragment.connections
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:: Insert a value into the primary key: <code> INSERT INTO test.mutex(id) VALUES (1); </code>
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-->
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=== 3- Create the extended PostgreSQL source files ===
 
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: PostgreSQLAdapter.java
 
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: PostgreSQLSchemaManger.java
 
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=== 4- Create the extended PostgreSQL test files ===
 
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: PostgreSQLAdapterTest.java
 
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: PostgreSQLSchemaMangerTest.java
 

Latest revision as of 19:30, 26 January 2014

Important.png
This page may be obsolete.
It contains historical information.

Task Summary

Task Status
Install the PostgreSQL Server DONE
Install PostgreSQL driver DONE
Add code to connect to server DONE
Create Script for Test database DONE
Test connection to the server DONE
Configure UnitTests for multiple DB's

Task Details

Install PostgreSQL

Download: Version 9.0 from list of PostgreSQL downloads.

Install PostgreSQL JDBC3 driver

Download: JDBC3 Postgresql Driver, Version 9.0-801 @ http://jdbc.postgresql.org/download.html
Install: Copy driver to [jdk folder]/jre/lib/ext

Code: Add PostgreSQL Driver

Package: nexj.core.persistance.sql

Create PostgreSQLAdapter.java by extending SQLAdapter
Create PostgreSQLSchemaManager.java by extending SQLSchemaManager
Edit RelationalDatabase.java
Edit RelationalDatabaseFragment.java
Edit SQLSchemaManagerFactory.java

Package: nexj.core.meta.sys

Edit system.dstypes

SQL Scripts

Package: nexj.core.persistence.sql.script

Create
  • postgresql_setup.sql
  • postgresql_drop.sql
  • postgresql_insert.sql
  • postgresql_upd_addr.sql
  • postgresql_upd_cont.sql

UnitTest: Test Connectivity to database

Package: nexj.core.persistance.sql

Create PostgreSQLAdapterTest.java by extending SQLAdapterTest
Create PostgreSQLSchemaManagerTest.java by extending SQLSchemaManagerTest

Package: nexj

Create postgresql.connections using NexJ Studio
Edit default.config to use PostgreSQL
Edit all *.connections files to use PostgreSQL

Configure UnitTests for more than one Database

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