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Open Source ERP Technologies for Java Developers

  1. Introduction to Open Source ERP for Java Developers (Compiere, ADempiere and Openbravo) Presented by: Chuck Boecking from Trek Global 512.850.6068 Note: If you find this presentation helpful or if you have recommendations, please reach out and let me know. Thanks!
  2. Why a Java Developer Should Care ● Open Source ERP is approaching the tipping point of business acceptance. ● This tipping point gives the Java developers more freedom and flexibility when adopting platforms to solve wide-scale business problems. ● A single company-wide open source system gives developers more resources to drive and change business.
  3. Interesting Points ● Compiere, ADempiere and OpenBravo are mature and stable solutions for managing goods and services in enterprises from $50M to $500M in gross revenue. ● Discussion topics will include architecture, application, performance tuning and war stories.
  4. What is ERP? ERP or Enterprise Resource Planning is a single application that brings many common organizational features into a single package. Features include: Accounting (GL, AP, AR) Inventory Management CRM (Customer Management Receiving Purchasing (Order) Fulfillment and Shipping Management Product Management Sales (Order) Management Manufacturing Customer Management Vendor Management Service Management
  5. Case Studies Worth Reading Complex inspection and wholesale distribution ● 120 users across many countries and multiple financial entities ● Why notable: extensive customization High volume wholesale and retail distribution ● 300 concurrent users shipping 10M units per month across 140K order lines ● Why notable: high volume
  6. Technology Stack ● Java SE ● Tomcat and JBoss ● Model Driven Architecture - application dictionary ● zk WebUI and Java Swing ● PostgreSQL DB and Oracle DB ● 2Pack Release Management Notable: supports end-to-end license-free usage for companies with up to 500 concurrent users.
  7. ADempiere Statistics ● Just under 3000 classes w/o including auto- generated model classes ● About 800 tables ● Created in in 2006 as a fork from Compiere ● Historically one of's most active projects
  8. Common Developer Entry Points Developer hooks for implementing logic and automation: ● Callout - based on user interactions with UI. ● Model - based on interaction with persistence layer. ● Processes - based on users deliberately pressing a button or invoking a menu action. Other: Context - helps control visibility and default values and is also accessible from code almost anywhere.
  9. Callout package org.adempiere.callout; import java.util.Properties; import org.compiere.model.CalloutEngine; import org.compiere.model.GridField; import org.compiere.model.GridTab; import org.compiere.util.AdempiereSystemError; import org.compiere.util.Env; public class SimpleCallout extends CalloutEngine { public String test(Properties ctx, int windowNo, GridTab mTab, GridField mField, Object value) throws AdempiereSystemError { // First get value Price = ((BigDecimal)mTab.getValue("Price")); // do some calculations BigDecimal Total = Qty.multiply(Price); // Set value back to column field mTab.setValue("Total", Total); return "this is a return string"; } } Source:
  10. Model package adempiere.model; import org.compiere.model.X_XX_Material; public class MMaterial extends X_XX_Material { /** Create & Load existing Persistent Object */ public MMaterial(Properties ctx, int XX_Material_ID, String trxName) { super(ctx, XX_Material_ID, trxName); // other initializations here } /** Create & Load existing Persistent Object. */ public MMaterial(Properties ctx, ResultSet rs, String trxName) { super(ctx, rs, trxName); // other initializations here } /** [OPTIONAL] Called before Save for Pre-Save Operation. */ protected boolean beforeSave(boolean newRecord) { return true; } /** ... afterSave(), getters, setters, convenience methods */ } Example:
  11. Process package org.compiere.process; public class TemplateProcess extends SvrProcess { private PO record; @Override protected void prepare() { for ( ProcessInfoParameter para : getParameter()) { ...handle parameters... } // you can also retrieve the id of the current record for processes called from a window int recordId = getRecord_ID(); } @Override protected String doIt() throws Exception { /* Commonly the doIt method firstly do some validations on the parameters and throws AdempiereUserException or AdempiereSystemException if errors found */ return "A message to the user (indicating success - failures must throw Exceptions)"; } /** Post process actions (outside trx). */ @Override protected void postProcess(boolean success) { if (success) {} else { } } }
  12. Context int currole_id = Env.getContextAsInt(ctx, "#AD_Role_ID");
  13. 2Pack Environment Migration Simple Environment Management Prod Complex Environment Prod Management Stage 1 Stage 2 Dev QA1 QA2 QA3 Dev1 Dev2 Dev3 Dev4
  14. Resources Development introduction End-to-end development example http://www.adempiere. com/How_to_create_a_complete_new_module_in_ADempiere Creating a customization environment
  15. War Stories Complex: CSI inspection Volume: 10M units from worldwide distribution eCommerce: 3 webstores => 1K shipments/day Project Management: Time tracking
  16. Chuck Boecking ● Started with Compiere in 2003 ● Open Source ERP 70 to 90% since 2006 ● Professional educator and integrator ● Wholesale distribution and assembly specialty Chuck Boecking 512.850.6068