Human Tasks: Create form elements like combobox, radio or checkbox on form

Question

Hi!
The creation of above mentioned elements is not the hard part. But how can I get the information back into my BPEL process? Is there a build-in way that I've missed?
A <select><option></option></select> (aka combobox or dropdown list) marks the selected item by simply writing "selected" into the <option> element. It seems there is no build-in way to get the "selected" or "checked" (for checkboxes) as boolean back into BPEL?
Any ideas?
Best Regards
Sebastian

Answer 1

Okay, that works for me:
private String getTableFieldDropdown(Element payload, Form form, String xpath,
String inloopXPath, String datatype, String refxPath, String valueXPath, String displayXPath) throws Exception {
Field thisField = null;
thisField = form.getField(xpath);
String thisDisabled = "";
String returnString = "";
int len3 = PayloadFormGenerator.selectNodes(payload, refxPath, form.getNamespaceMap()).length;
if (thisField == null || thisField.isEditable())
thisDisabled = "";
else
thisDisabled = "disabled";
returnString = "<td align=\"left\"><select name=\"" + PayloadFormGenerator.constructName(inloopXPath) + "\" dataType=\"" + datatype + "\" " + thisDisabled + ">";
for (int i3 = 1; i3 <= len3; i3++) {
returnString = returnString + "<option value=\"" + PayloadFormGenerator.selectNodeValue(payload, refxPath + "[" + i3 + "]" + valueXPath, form.getNamespaceMap()) + "\" ";
if (PayloadFormGenerator.selectNodeValue(payload, refxPath + "[" + i3 + "]" + valueXPath, form.getNamespaceMap()).equals(PayloadFormGenerator.selectNodeValue(payload, inloopXPath, form.getNamespaceMap())))
returnString = returnString + "selected=\"selected\"";
returnString = returnString + ">" + PayloadFormGenerator.selectNodeValue(payload, refxPath + "[" + i3 + "]" + displayXPath, form.getNamespaceMap()) + "</option>";
returnString = returnString + "</select></td>";
return returnString;
Call this function in your form to create a drop down list: (example for dynamic number of rows where you can select a product in each; for loop not included here - i4 is your for counter)
<%=getTableFieldDropdown(payload, form, "/ns0:task/ns0:payload/ns1:SalesTaskPayload/ns1:SelectedProductList/ns1:Product[*]/ns1:id", "/ns0:task/ns0:payload/ns1:SalesTaskPayload/ns1:SelectedProductList/ns1:Product["+ i4 +"]/ns1:id", "anySimpleType", "/ns0:task/ns0:payload/ns1:SalesTaskPayload/ns1:ProductList/ns1:Product", "/ns1:id", "/ns1:name")%>
parameters explained:
1. payload variable as provided in the auto generated task form
2. form variable as provided in the auto generated task form
3. xpath (the subject of selection)
4. inloopxpath (where your selection should be stored)
5. datatype
6. xpath to the list that delivers combobox information
7. will be concated to 6. -> goes into <option value="{X}">
8. will be concated to 6. -> goes into <option>{X}</option>
Cheers
Sebastian