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javajspdictionarystruts2ognl

Join two Map on Jsp page - Struts2 application

I am working on Struts2 Application;

my displaying objects are Map objects:

Map<String, HashMap<String, List<PlanDAO>>> channelRoomTypePlanmap = 
                             new HashMap<String,HashMap<String,List<PlanDAO>>>();

Map<String, List<RateInventoryDAO>> rateInventoryMap = 
                             new HashMap<String, List<RateInventoryDAO>>();

Here, I have two objects, where rateInventoryMap key is dependent on channelRoomTypePlanmap value combination.

Like when I print first value of channelRoomTypePlanmap I want to create key using combination of its value, and find it in rateInventoryMap , if its true then it'll print its value.

<div>
    <table id="mainTable" >
        <tr>
            <td>
                <s:iterator value="channelRoomTypePlanmap">
                    <table border="1">
                        <tr>
                            <td><s:property value="key" />
                            </td>
                            <td>
                                <table>
                                    <s:iterator value="value">
                                        <tr>
                                            <td><s:property value="key" />
                                            </td>
                                            <td>
                                                <table border="1">
                                                    <s:iterator value="value">
                                                        <tr>
                                                            <td><s:property value="planName" />
                                                            </td>
                                                            <s:iterator value="rateInventoryMap">
                                                                <s:iterator value="value">
                                                                    <td><s:property value="currentRate" />
                                                                    </td>
                                                                </s:iterator>
                                                            </s:iterator>
                                                        </tr>
                                                    </s:iterator>
                                                </table>
                                            </td>
                                        </tr>
                                    </s:iterator>
                                </table>
                            </td>
                        </tr>
                    </table>
                </s:iterator>
            </td>
        </tr>
    </table>
</div>

I tried this, which is showing in wrong format, means showing all data from second Map in single row for all. I've also heard that scriptlet code should be avoided.

How can I join these two Maps on JSP ?

Current View using above code_ enter image description here

Solution

  • Your model structure 

    new HashMap<String,HashMap<String,List<PlanDAO>>>();

    should be improved; it is too noisy, you need five nested iterators in your page to do what you need, never know in which iterator you are without counting them, and, more important, even if this structure can be used to display data, it can't be used to send it back (you never know).

    I strongly suggest you to read the following answer:

    That said, when dealing with Collections in a JSP you must read about two great features of OGNL: