Hello,
I have used seam gen to generate basic classes for an existing database model. Now I try
to add a listbox with multiple selection. The backend class is extended from EntityQuery.
The problem I have now:
How can I add a multiple selection restriction string for the query?
I have tried with a Long[] but the result is a class cast exception: the resulting select
is not capable that he should receive a list but expects only one variable instead...
| <h:selectManyMenu value="#{parameterList.categoryIds}">
| <s:selectItems value="#{paramcategoryList.resultList}"
var="category" label="#{category.name}"/>
| <s:convertEntity />
| </h:selectManyMenu>
|
| @Name("parameterList")
| public class ParameterList extends EntityQuery {
| private List<Long> categoryIds;
|
| private static final String[] RESTRICTIONS = {
| "parameter.paramcategory.id in
elements(#{parameterList.categoryIds})",};
|
| @Override
| public String getEjbql() {
| return "select parameter from Parameter parameter";
| }
|
| @Override
| public List<String> getRestrictions() {
| return Arrays.asList(RESTRICTIONS);
| }
|
| ... categoryIds getter and setter
| }
|
An additional problem arises with building RESTful URL's: since I have a dynamic list
of parameters for the GET URL I have not found a solution to add a suitable page parameter
to page.xml. As a work around I use the JSF POST...
Does anybody know how to add a page parameter that is capable of a selection list?
Many thanks,
Gernot
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