Filter for JSF table - jsf

Question

I would like to add filter for JSF table and limit the values based on filter value.
<h:inputText id="search" value="#{accounts.searchString}"></h:inputText>
<h:commandButton value="Search" action="#{accounts.search()}">
<f:ajax execute="search" render="output"></f:ajax>
</h:commandButton>
I suppose that the best way will be to add the filter value into the SQL query:
SELECT * FROM CUSTOMERS ORDER BY %S %S offset ? limit ?
Full code: http://pastebin.com/eEeTWEqK
How I can implement this for the code into the link?
PS. I modified the code this way:
<div class="div_input_style">
<h:inputText id="search" class="input_style" value="#{accounts.searchString}"></h:inputText>
<h:commandButton class="theSpan" value="Search by title">
<f:ajax execute="search" render="output"></f:ajax>
</h:commandButton>
</div>
public List<AccountsObj> list(int firstRow, int rowCount, String sortField, boolean sortAscending) throws SQLException
{
String SqlStatement = null;
if (ds == null)
{
throw new SQLException();
}
Connection conn = ds.getConnection();
if (conn == null)
{
throw new SQLException();
}
String sortDirection = sortAscending ? "ASC" : "DESC";
SqlStatement = "SELECT * FROM ACCOUNT "
+ " WHERE ? IS NULL OR ? IN (USER_NAME, FIRST_NAME, LAST_NAME)"
+ " ORDER BY %S %S offset ? limit ? ";
String sql = String.format(SqlStatement, sortField, sortDirection);
PreparedStatement ps = null;
ResultSet resultSet = null;
List<AccountsObj> resultList = new ArrayList<>();
try
{
conn.setAutoCommit(false);
boolean committed = false;
ps = conn.prepareStatement(sql);
ps.setString(1, searchString);
ps.setString(2, searchString);
ps.setInt(3, firstRow);
ps.setInt(4, rowCount);
resultSet = ps.executeQuery();
resultList = ProcessorArrayList(resultSet);
conn.commit();
committed = true;
}
finally
{
ps.close();
conn.close();
}
return resultList;
}