Sql query using EJB

Question

I'm trying to adapt my sql query i use for php in order to return zipcodes using a radial search.
This is my query that i use in php:
$strSql2 = "SELECT * FROM Zips where (DEGREES(ACOS(SIN(RADIANS(" . $this->lat . ")) * SIN(RADIANS(lat)) + COS(RADIANS(" . $this->lat . ")) * COS(RADIANS(lat)) * COS(RADIANS(" . $this->lon . " - lon)))) * 69.090909) <= " . $distance;I need to adapt this to work for my finder method in my jaws.xml file, here is what i have so far, i know it doesn't work, especially with the < sign in there ;)
         <finder>
           <name>findByDistance</name>
           <query>(DEGREES(ACOS(SIN(RADIANS(" . $this->lat . ")) * SIN(RADIANS(lat)) + COS(RADIANS(" . $this->lat . ")) * COS(RADIANS(lat)) * COS(RADIANS(" . $this->lon . " -lon)))) * 69.090909) <= " . $distance</query>
           <order>zipcode ASC</order>
         </finder>          Thanks for your help guys.

Answer 1

Hello,
If the ">" or "<" are creating the problem then u can use the following approach. Here i am explaing it with an example:
EJB QL statements are declared in XML deployment descriptors. XML uses the greater than (�>�) and less than (�<�) characters as delimiters for tags, so using these symbols in the EJB QL statements will cause parsing errors unless CDATA sections are used. For example, the following EJB QL statement causes a parsing error, because the XML parser cannot distinguish the use of the �>� symbol from a delimiter to a XML tag:
<query>
<query-method>
<method-name>findWithPaymentGreaterThan</method-name>
<method-params>java.lang.Double</method-params>
</query-method>
<ejb-ql>
SELECT OBJECT( r ) FROM Reservation r
WHERE r.amountPaid > ?1
</ejb-ql>
</query>
To avoid this problem, the EJB QL statement should be placed in a CDATA section:
<query>
<query-method>
<method-name>findWithPaymentGreaterThan</method-name>
<method-params>java.lang.Double</method-params>
</query-method>
<ejb-ql>
<![CDATA[
SELECT OBJECT( r ) FROM Reservation r
WHERE r.amountPaid > 300.00
]]>
</ejb-ql>
</query>
The CDATA section takes the form <![CDATA[ literal-text ]]>. When an XML processor encounters a CDATA section it doesn�t attempt to parse the contents enclosed by the CDATA section, instead the parser treats it as literal text .