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[[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|- Setup | Install the postgresqlPostgreSQL 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 ===For testing the connectionDownload: <code> JDBC3 Postgresql Driver, the 'PostgreSQLAdapterTestVersion 9.0-801 </code> @ http://jdbc.postgresql.java' is being usedorg/download.html * <br/>Install: Copy driver to <code>[[PostgreSQL_Adapter-nexjjdk folder]/jre/lib/test-envext</todo |TODOs]]code> * Files to configure based on === Code: Add PostgreSQL propertiesDriver ===Package: src<code>nexj.core.persistance.sql</code>:: Create <code>PostgreSQLAdapter.java </code> by extending <code>SQLAdapter</ Extends SQLAdapter.java - SQL Persistence adapter, responsible for regular data queries (insert, select, delete)code>:: Create <code>PostgreSQLSchemaManager.java </code> by extending <code>SQLSchemaManager</ Extends SQLSchemaManagercode> :Edit <code>RelationalDatabase.java - class for reading, creating and upgrading the database schema</code>:: systemEdit <code>RelationalDatabaseFragment.dstypejava</code>:: DatabaseToolEdit <code>SQLSchemaManagerFactory.java </code> Package: <code>nexj.core.meta.sys</ This file calles SQLSchemaMangerFactorycode>:Edit <code>system.java and creates the connectiondstypes</code> === SQL Scripts ===Package:: RelationalDatabase<code>nexj.core.persistence.sql.java script<// Sets the default properties for the supported driverscode>:: RelationalDatabaseFragmentCreate * <code>postgresql_setup.java sql</code>* <code>postgresql_drop.sql</ Sets the custom fragment properties for the supported driverscode>:: Driver type and some other properties in JDBCInfo* <code>postgresql_insert.javasql</code>:: SQLSchemaManagerFactory* <code>postgresql_upd_addr.java sql</code>* <code>postgresql_upd_cont.sql</ Sets the connection for the particular adapter typecode> === UnitTest: testTest Connectivity to database ===Package:: AllTests<code>nexj.core.persistance.javasql</code>:: Create <code>PostgreSQLAdapterTest.java </code> by extending <code>SQLAdapterTest</ Extends SQLAdapterTest.javacode>:: Create <code>PostgreSQLSchemaManagerTest.java </code> by extending <code>SQLSchemaManagerTest</ Extends SQLSchemaManagerTest.javacode> Package:: default.config <code>nexj<// System resources are being extracted from these 4 XML filescode>:: Create <code>postgresql.connectionconnections</code> using NexJ Studio:: filestorageEdit <code>default.connectionsconfig</code> to use PostgreSQL::filestoragefragmentEdit all <code>*.connections</code> files to use PostgreSQL: Script - scripts are being processed through SQLDataTest.java:: postgresql_setup.sql:: TO be cond'===Configure UnitTests for more than one Database===
:: 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
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: After all properties are loaded, it creates the connection through Connection Factory files.