8 Replies Latest reply on Nov 4, 2009 9:20 AM by Shervin Asgari

    Seam Remoting and Evaluating EL Expressions

    Darrell Wu Newbie

      Hi,


      I've been trying to use the Seam.Remoting.eval to evaluate a list of objects.  But for some reason it's not returning an array of objects.  All i'm getting is a string.  I'm not sure if i've missed understood the documentation or I'm missing something.


      In my Session bean i've outjected an instance variable



      @Out(required = false)
      private List<BankTransaction> bankTransList;
      
      


      On my jsf page i've the following javascript



       function setupBankTransactionsCallback(bankTransactions){
      
        for (var i = 0; i < bankTransactions.length; i++) {
      
            alert("Got banktransaction: " + bankTransactions[i].getDescription());
      
          }    
      }
      
      Seam.Remoting.eval("#{bankTransList}", setupBankTransactionsCallback);
      
      



      I've also have a s:remote tag with the entity Bean name


      When the page loads it runs Seam.remoting.eval statement on the outjected instance variable.
      In firebug i can see the ajax request going to the server, as follows



      |<envelope><header><context><conversationId>10</conversationId></context></header><body><eval expr="[com.oneplace.cashbook.BankTransaction@172971, com.oneplace.cashbook.BankTransaction@a1bbd0, com.oneplace.cashbook.BankTransaction@315b2a, com.oneplace.cashbook.BankTransaction@584a81, com.oneplace.cashbook.BankTransaction@836075, com.oneplace.cashbook.BankTransaction@131b721, com.oneplace.cashbook.BankTransaction@ede36c, com.oneplace.cashbook.BankTransaction@1ede8c1, com.oneplace.cashbook.BankTransaction@4bf8b7, com.oneplace.cashbook.BankTransaction@1b5ece6, com.oneplace.cashbook.BankTransaction@d40154, com.oneplace.cashbook.BankTransaction@a349d0, com.oneplace.cashbook.BankTransaction@432841, com.oneplace.cashbook.BankTransaction@107c389, com.oneplace.cashbook.BankTransaction@75af7a, com.oneplace.cashbook.BankTransaction@53812e]" id="0"/></body></envelope>|




      and the response is as follows



      <envelope><header><context><conversationId>17</conversationId></context></header><body><result id="0"><value><str>%5Bcom.oneplace.cashbook.BankTransaction%40172971%2C%20com.oneplace.cashbook.BankTransaction
      %40a1bbd0%2C%20com.oneplace.cashbook.BankTransaction%40315b2a%2C%20com.oneplace.cashbook.BankTransaction%40584a81%2C%20com.oneplace.cashbook.BankTransaction%40836075%2C%20com.oneplace.cashbook.BankTransaction
      %40131b721%2C%20com.oneplace.cashbook.BankTransaction%40ede36c%2C%20com.oneplace.cashbook.BankTransaction%401ede8c1%2C%20com.oneplace.cashbook.BankTransaction%404bf8b7%2C%20com.oneplace.cashbook.BankTransaction
      %401b5ece6%2C%20com.oneplace.cashbook.BankTransaction%40d40154%2C%20com.oneplace.cashbook.BankTransaction%40a349d0%2C%20com.oneplace.cashbook.BankTransaction%40432841%2C%20com.oneplace.cashbook.BankTransaction%40107c389%2C%20com.oneplace.cashbook.BankTransaction%4075af7a%2C%20com.oneplace.cashbook.BankTransaction
      %4053812e%5D</str></value><refs></refs></result></body></envelope>




      When the callback method is called i get a javascript error



      bankTransactions[i].getDescription is not a function



      as the function is passed a string instead of an array.


      Does anyone know what i've done wrong?


      Thanks