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NexJ Express Connecting to PostgreSQL

1,712 bytes added, 20:30, 26 January 2014
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<big><big> PostgreSQL Adapter for NexJ - Create Test Environment </big></big>{{NexJ_Express IndexAdmon/obsolete}}
[[category: NexJ Express PostgreSQL]][[Category:NexJ_Express_Development]][[category: NexJ Express]] ==Task Summary = ={| border="1" cellpadding="4" cellspacing="2" style="border: 1px solid black;border-collapse:collapse;"|-! 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: <code>Version 9.0</code> from list of [http://www.enterprisedb.com/products/pgdownload.do#windows PostgreSQL downloads]. === Install PostgreSQL JDBC3 driver ===Download: <code> JDBC3 Postgresql Driver, Version 9.0- 801 </code> @ http://jdbc.postgresql.org/download.html <br/>Install: Copy driver to <code>[jdk folder]/jre/lib/ext</code> === Code: Add PostgreSQL Driver ===Package: <code>nexj.core.persistance.sql</code>:Create <code>PostgreSQLAdapter.java</code> by extending <code>SQLAdapter</code>:Create <code>PostgreSQLSchemaManager.java</code> by extending <code>SQLSchemaManager</code> :Edit <code>RelationalDatabase.java</code>:Edit <code>RelationalDatabaseFragment.java</code>:Edit <code>SQLSchemaManagerFactory.java</code> Package: <code>nexj.core.meta.sys</code>:Edit <code>system.dstypes</code> === SQL Scripts ===Package: <code>nexj.core.persistence.sql.script</code>:Create * <code>postgresql_setup.sql</code>* <code>postgresql_drop.sql</code>* <code>postgresql_insert.sql</code>* <code>postgresql_upd_addr.sql</code>* <code>postgresql_upd_cont.sql</code> === UnitTest: Test Connectivity to database ===Package: <code>nexj.core.persistance.sql</code>:Create <code>PostgreSQLAdapterTest.java</code> by extending <code>SQLAdapterTest</code>:Create <code>PostgreSQLSchemaManagerTest.java</code> by extending <code>SQLSchemaManagerTest</code> Package: <code>nexj</code>:Create <code>postgresql.connections</code> using NexJ Studio:Edit <code>default.config</code> to use PostgreSQL:Edit all <code>*.connections</code> files to use PostgreSQL ===Configure UnitTests for more than one Database=== <!--== Setup the postgresql-connection ===For testing the connection, the 'PostgreSQLAdapterTestAllTests.java' is being used.* : Installed the <code> Installer version Version 9.0.1-1</code> from list of [[PostgreSQL_Adapter-nexjhttp://www.enterprisedb.com/test-envproducts/todo |TODOspgdownload.do#windows PostgreSQL downloads]]* Done.: 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 is loaded from RelationalDatabaseFragment.java and RelationalDatabase.java
: Metadata is loaded from the particular driver
::
props.setProperty(XMLMetadataLoader.CONNECTIONS_URL_PROPERTY, "/nexj/" + sAdapter.toLowerCase(Locale.ENGLISH) + ".connections"); // sets the properties to postgresql.connection
</source>
: After all properties are loaded, it creates the connection through Connection Factory files.
===Files to Configure==='''NOTE''': Changes to these files are involved with '''1-Port''', which should be: Configured the work/ws/core/test/nexj/5432, and '''2- Driver package''' that should change to <code> org.postgresql.connectionxa.PGXADataSource </code>: src: Configured : system.dstype: Configured : DatabaseTool.java // This file calles SQLSchemaMangerFactory.java and creates the connection: Configured : RelationalDatabase.java // Sets the default properties for the supported drivers: Configured : RelationalDatabaseFragment.java // Sets the custom fragment properties for the supported drivers: Configured : Driver type and some other properties in JDBCInfo.java: Configured : SQLSchemaManagerFactory.java === 2- Create a PostgreSQL database through some scripts===: Through the process in postgresql_setup.sql::: A database called 'test is created in PostgreSQL : <code> CREATE DATABASE test < /code>:: To create a <code>user</code> along with <code>password</code>: <code> CREATE USER test WITH PASSWORD 'test'; </code>:: Login to Sets the database 'test' with username 'test': <code> psql -U test test </code>:: Create a <code> Schema </code> called 'test' inside connection for the database 'test' with particular owner 'test'adapter type: <code> CREATE SCHEMA test AUTHORIZATION test;</code>:: Create a <code>table</code> called 'mutex' with primary key: <code> CREATE TABLE testAllTests.mutex(id INT PRIMARY KEY); </code>java:: Insert a value into the primary key: <code> INSERT INTO testdefault.mutex(id) VALUES (1); <config //code> ==change to these four files are: adapter= 3- Create the extended "PostgreSQL source files ==" port="5432": PostgreSQLAdapter: postgresql.javaconnection : PostgreSQLSchemaManger: filestorage.java === 4- Create the extended PostgreSQL test files ===connections: PostgreSQLAdapterTest:filestoragefragment.javaconnections: PostgreSQLSchemaMangerTest.java-->