How to release panelbinding correctly?

Question

Hi guys, i have a master-detail from linked to the main form through an item menu.
When i close the master-detail form i perform the following operations:
panelBinding.release(DCDataControl.REL_VIEW_REFS);
panelBinding.getBindingContext().remove(panelBinding.getName());
this.dispose();
Is it correct?
I'm asking this because if I open the master-detail form more then once i have the following error:
oracle.jbo.JboException) 35001
thank you,
angelo

Answer 1

When you close a multi-panel form be sure to release all bound panels.
I do it this way:
In all my forms I have:
1) a method to create the bindings
private DCBindingContainer createBindingContainer(String packageName, String panelModelName)
2) a collection of all bound panels, to make it easier all my panels extends an Abtract class with at least following methods:
public void setBindingContainer(DCBindingContainer ctr) throws Exception
public void panelReleaseViews()
3) when closing my form I loop through my collection, cast to my Abstract class and call the release method.
Each sub component must implement the release panel method to release ALL its panels (there could more > 1)
Details:
in calling form:
private DCBindingContainer createBindingContainer(String packageName, String panelModelName)
StringBuffer sb = new StringBuffer(packageName);
sb.append(".");
sb.append(panelModelName);
DCBindingContainerDef bcdef = DCBindingContainerDef.findDefObject(sb.toString()); //NOTE THE NAME.
if (bcdef == null)
throw new JboException("System error, "+getClass().getName()+".createBindingContainer, DCBindingContainerDef: "+sb.toString()+" not found");
DCBindingContainer bc = bcdef.createBindingContainer(panelBinding.getBindingContext());
bc.setName(panelModelName);
panelBinding.getBindingContext().put(panelModelName, bc);
return bc;
In Abstract class:
public void setBindingContainer(DCBindingContainer ctr) throws Exception
panelBinding = (JUPanelBinding)ctr;
if (panelBinding == null)
throw new JboException("System error "+getClass().getName()+".setBindingContainer, Panel Binding is null");
else
if (ctr.getBindingContext() == null)
throw new JboException("System error "+getClass().getName()+".setBindingContainer, Binding Context is null");
setBindingContext(ctr.getBindingContext());
// override this method if more panels to release in called panel
public void panelReleaseViews()
if (panelBinding != null)
panelBinding.release(DCDataControl.REL_VIEW_REFS);
System.out.println(getClass().getName()+".releaseBeforeClosing(), panelBinding.getName(): "+panelBinding.getName());
panelBinding.getBindingContext().remove(panelBinding.getName());
Example of call:
PACKAGE_NAME = static String defined in class
String panelModelName = "PanelFileTypeVO1UIModel";
DCBindingContainer bc = this.createBindingContainer(PACKAGE_NAME,panelModelName);
PanelFileTypeVO1 panelFileTypeVO1 = new PanelFileTypeVO1();
panelFileTypeVO1.setBindingContainer(bc);
// panelFileTypeVO1.setBindingContext(panelBinding.getBindingContext());
panelFileTypeVO1.revalidate();
add panel to collection
To release:
Iterate obver your collection, cast to Abstract class and call panelReleaseViews()
Regards
Fred