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
