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How to pass paremeters into Velocity

lpopek

have method in my Java class.

<span>public</span> <span>String</span><span> getCorrectFormatDate</span><span>(</span><span>Issue</span><span> issue</span><span>){</span>
    <span>Long</span><span> timespent </span><span>=</span><span> issue</span><span>.</span><span>getTimeSpent</span><span>();</span>

    <span>if</span><span>(</span><span>timespent</span><span>></span><span>0</span><span>){</span>
        <span>int</span><span> hours </span><span>=</span> <span>(</span><span>int</span><span>)</span> <span>(</span><span>timespent </span><span>/</span> <span>3600</span><span>);</span>
        <span>int</span><span> remainder </span><span>=</span> <span>(</span><span>int</span><span>)</span> <span>(</span><span>timespent </span><span>-</span><span> hours </span><span>*</span> <span>3600</span><span>);</span>
        <span>int</span><span> min </span><span>=</span><span> remainder </span><span>/</span> <span>60</span><span>;</span>
        <span>String</span><span> result </span><span>=</span><span> hours </span><span>+</span> <span>"h "</span> <span>+</span><span> min </span><span>+</span><span>"min"</span><span>;</span>
        <span>return</span><span> result</span><span>;</span>
    <span>}</span>
    <span>else</span><span>{</span>
        <span>return</span> <span>"0"</span><span>;</span>
    <span>}</span>

<span>}</span>

Also, In my velocity template I have this code

<span>#</span><span>foreach </span><span>(</span><span>$issue in $issues</span><span>)</span>
        <span><</span><span>tr role</span><span>=</span><span>"row"</span><span>></span>
            <span><</span><span>td colspan</span><span>=</span><span>"1"</span> <span>class</span><span>=</span><span>"confluenceTd"</span><span>><</span><span>a href</span><span>=</span><span>"$action.getBaseURL()/browse/${issue.getKey()}"</span><span>></span><span>$issue</span><span>.</span><span>getKey</span><span>()</</span><span>a</span><span>></</span><span>td</span><span>></span>
            <span><</span><span>td colspan</span><span>=</span><span>"1"</span> <span>class</span><span>=</span><span>"confluenceTd"</span><span>></span><span>$issue</span><span>.</span><span>getSummary</span><span>()</</span><span>td</span><span>></span>
            <span><</span><span>td colspan</span><span>=</span><span>"1"</span> <span>class</span><span>=</span><span>"confluenceTd"</span><span>></span><span>$action</span><span>.</span><span>getCorrectFormatDate</span><span>(</span><span>$issue</span><span>)</</span><span>td</span><span>></span>
        <span>#</span><span>end</span>

Why this my certain method isnt working?

<span>$action</span><span>.</span><span>getCorrectFormatDate</span><span>(</span><span>$issue</span><span>)</span>

threw exception java.lang.NullPointerException

Accepted answers

Tom Lister_fo1j4e

Hi @lpopek

Are you passing an instance of your class into velocity params with key action?

What kind of plugin are you developing?

All comments

Tom Lister_fo1j4e

Hi @lpopek

Are you passing an instance of your class into velocity params with key action?

What kind of plugin are you developing?

lpopek

"Are you passing an instance of your class into velocity params with key action?"

What does it mean?

In my velocity I use

$webResourceManager.requireResourcesForContext

And I have a properly configuration in xml, I can invoke method without parameters, but in this case I want to in Velocity pass parameter and theres a problem

Tom Lister_fo1j4e

Hi Steven

Forget my previous comments, I think the problem here is that you have issues without work logged against them. In those cases the getTimeSpent method will return null

If that's not the case, have you got more info?

Can you post a fuller stack trace that shows the error class and line number reported? That will tell me more.

What is your Java Class? Have you extended an action and expect that action class to be available in the template?

lpopek

Hello,

For example, If I will use;

<td colspan="1" class="confluenceTd">$issue.getTimeSpent()</td>

I will get a result in miliseconds, so it seems that the parameter is passed.

Now, I want to use method from my Java class, because I want get time in nice format hh:mm.

In my Java class I have the following method.

public String getCorrectFormatDate(Issue issue){
        Long timespent = issue.getTimeSpent();

        if(timespent>0){
int hours = (int) (timespent / 3600);
            int remainder = (int) (timespent - hours * 3600);
            int min = remainder / 60;
            String result = hours + "h " + min +"min";
            return result;
        }
else{
return "0";
        }

    }

Also, In my template I pass variable 'issues' from my Java class from other method.

Im sure, that This template see my Java class with this method

public String getCorrectFormatDate(Issue issue)

Problem is, that in my Velocity template I want to pass parameters

for exmaple

#foreach ($issue in $issues)

<tr role="row">
    <td colspan="1" class="confluenceTd">$action.getTimeSpent($issue)</td>

#end

How to solve my problem and call function for each issue,
Thanks a lot for Your helps, Best wishes

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