dynamically Search Query in HQL with optional Parameter?
<p>i am developing an application in which i need search functionality, i want to write HQL query that dynamically create according to parameters.
Currently i have 4 parameters, while searching all parameters are required or 1 or 2 or 3 parameters required according to how user want to searchs.</p>

<pre><code>public List&lt;Plot&gt; fetchSearchedPlots(int plotType, String plotSize, String min, String max)
    {
        Session session = sessionFactory.getCurrentSession();
        List&lt;Plot&gt; searchedLists = new ArrayList&lt;Plot&gt;();
        String query = "FROM Plot where type = ? and size = ? and price &gt;= ? and price &lt;= ?";
        searchedLists = (List&lt;Plot&gt;)session.createQuery( query )
                .setInteger( 0, plotType )
                .setString( 1, plotSize )
                .setString( 2, min )
                .setString( 3, max ).list();
        return searchedLists;
    }
</code></pre>

<p>this is my general query for all 4 parameters, now i have to write a search query in which i use multiple optional parameters, How to make this query with optional parameters? kindly convert my query to dynamically optional parameters query ? 
Thanks</p>