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Asked: 2026-05-15T23:54:11+00:00

if i want to bind the value-attribute of a h:selectmanycheckbox to a map, with

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if i want to bind the value-attribute of a h:selectmanycheckbox to a map, with the ri of the jsf 2.0.3 i would do something like the following

the bean:

private Map<String, String[]> values = new HashMap<String, String[]>();

public Map<String, String[]> getValues() {
    return values;
}

public void setValues(Map<String, String[]> values) {
    this.values = values;
}

and the xhtml page:

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
  xmlns:h="http://java.sun.com/jsf/html"
  xmlns:f="http://java.sun.com/jsf/core">
<h:head>
    <title>Facelet Title</title>
</h:head>
<h:body>

    <h:form>
        <h:selectManyCheckbox
            id="test"
            value="#{testController.values['foo']}">
                <f:selectItem itemLabel="1" itemValue="1_1" />
                <f:selectItem itemLabel="2" itemValue="1_2" />
                <f:selectItem itemLabel="3" itemValue="1_3" />
                <f:selectItem itemLabel="4" itemValue="1_4" />                    
        </h:selectManyCheckbox>           
        <h:commandButton value="Send" />

    </h:form>

</h:body>

This works fine, but in my application I need more control over the location of every single checkbox, so i replaced the standard <h:selectManyCheckbox> tags with their icefaces-equivalent <ice:selectManyCheckbox> and the <ice:checkbox>.
The bean stays the same and the xhtml-page now looks like that: 

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
  xmlns:h="http://java.sun.com/jsf/html"
  xmlns:ice="http://www.icesoft.com/icefaces/component"
  xmlns:f="http://java.sun.com/jsf/core">
<h:head>
    <title>Facelet Title</title>
</h:head>
<h:body>
    <h:form>
        <ice:selectManyCheckbox
            id="test"
            layout="spread"
            value="#{testController.values['foo']}">
                <f:selectItem itemLabel="1" itemValue="1_1" />
                <f:selectItem itemLabel="2" itemValue="1_2" />
                <f:selectItem itemLabel="3" itemValue="1_3" />
                <f:selectItem itemLabel="4" itemValue="1_4" />                    
        </ice:selectManyCheckbox>           
        <table border="1">
            <tr>
                <td><ice:checkbox id="c1" for="test" index="0" /></td>
                <td><ice:checkbox id="c2" for="test" index="1" /></td>
            </tr>
            <tr>
                <td><ice:checkbox id="c3" for="test" index="2" /></td>
                <td><ice:checkbox id="c4" for="test" index="3" /></td>
            </tr>
        </table>
        <h:commandButton value="Senden" />            
    </h:form>

</h:body>

Now whenever I send the form I get a conversion-error and I can’t figure out why.

If I bind the <ice:selectManyCheckbox>‘s value-attribute to a simple stringarray it forks fine, but because I don’t know how many checkbox-groups there will be I need it to work with a map.

I use the icefaces 2.0.0 beta 1 together with the sun ri 2.0.3 and the el 2.2 on tomcat 6.0.26.

Does anybody know a solution to my problem?

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1 Answer

  1. Editorial Team

    You can try to put as many dummy mapelemts as you need to “initialize” your map.

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