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<a href="http://community.jboss.org/index.jspa" style="text-decoration: none; color: #E1E1E1">JBoss Community</a></h1>
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the db schema creation explaination
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created by <a href="http://community.jboss.org/people/wiwengweng">wiwengweng wen</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/632189#632189">View the full discussion</a>
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<div class="jive-rendered-content"><p>this is how I debug the codes, and find out something I don't understand so far.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I use mysql db, when codes go into "createGroup", one record is created in the jbpm_id_group table. can someone tell me how the commandService work? what is the "execute" function mean??<span> :) </span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>hope to learn and heard from you~</p><p>Vincent</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>appended codes:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>identityService.createGroup("management");</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>public String createGroup(String groupName) {</p><p>    return commandService.execute(new CreateGroupCmd(groupName, null, null));</p><p>  }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>public interface CommandService {<br/>  <br/>  String NAME_TX_REQUIRED_COMMAND_SERVICE = "txRequiredCommandService";<br/>  String NAME_NEW_TX_REQUIRED_COMMAND_SERVICE = "newTxRequiredCommandService";</p><p>  /**<br/>   * @throws JbpmException if command throws an exception.<br/>   */<br/>  <T> T execute(Command<T> command);<br/>}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>public class CreateGroupCmd implements Command<String> {</p><p>  private static final long serialVersionUID = 1L;</p><p>  protected String groupName;<br/>  protected String groupType;<br/>  protected String parentGroupId;</p><p>  public CreateGroupCmd(String groupName, String groupType, String parentGroupId) {<br/>    this.groupName = groupName;<br/>    this.groupType = groupType;<br/>    this.parentGroupId = parentGroupId;<br/>  }</p><p>  public String execute(Environment environment) throws Exception {<br/>    IdentitySession identitySession = environment.get(IdentitySession.class);<br/>    return identitySession.createGroup(groupName, groupType, parentGroupId);<br/>  }<br/>}</p></div>
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