wso2 dss mysql error - wso2

Question

I am getting this error while I am trying to test the data service on the wso2 dss
DS Fault Message: Error in
'SQLQuery.processStoredProcQuery'DS Code: DATABASE_ERRORSource Data
Service:-Name: CustomerDSLocation: \CustomerDS-1.0.0.dbsDescription:
N/ADefault Namespace: http://ws.wso2.org/dataserviceCurrent Request
Name: op1Current Params: {Name=?, NID=?}Nested Exception:-DS Fault
Message: Error in 'createProcessedPreparedStatement'DS Code:
UNKNOWN_ERRORNested Exception:-java.sql.SQLException: Parameter index
of 3 is out of range (1, 0)
any suggestions?
edited: The bds file is as follows, this is a sample case mentioned in the wso2 documentation.
<data name="CustomerDS">
<config id="default">
<property name="org.wso2.ws.dataservice.driver">com.mysql.jdbc.Driver</property>
<property name="org.wso2.ws.dataservice.protocol">jdbc:mysql://localhost:3306/CustomersDatabase</property>
<property name="org.wso2.ws.dataservice.user">root</property>
<property name="org.wso2.ws.dataservice.password">root</property>
</config>
<query id="q1" useConfig="default">
<sql>call getCustomer(?,?,?,?)</sql>
<result element="Entries" rowName="Entry">
<element name="Flag" column="Flag" xsdType="xs:integer" optional="true" />
<element name="Customer" column="Customer" xsdType="xs:string" optional="true" />
</result>
<param name="NID" sqlType="STRING" ordinal="1" />
<param name="Name" sqlType="STRING" ordinal="2" />
<param name="Flag" sqlType="INTEGER" type="OUT" ordinal="3" />
<param name="Customer" sqlType="STRING" type="OUT" ordinal="4" />
</query>
<operation name="op1">
<call-query href="q1">
<with-param name="NID" query-param="NID" />
<with-param name="Name" query-param="Name" />
</call-query>
</operation>
</data>
WHAT WORKED FOR ME!!
I found the reference code at http://svn.wso2.org/repos/wso2/people/kasun/wso2con_2013/starbucks_2.0/dss/StarbucksDataService.dbs
and the procedure call that is finally working for me is (which changes in procedure itself)
<data name="CustomerDS">
<config id="default">
<property name="org.wso2.ws.dataservice.driver">com.mysql.jdbc.Driver</property>
<property name="org.wso2.ws.dataservice.protocol">jdbc:mysql://localhost:3306/CustomersDatabase</property>
<property name="org.wso2.ws.dataservice.user">root</property>
<property name="org.wso2.ws.dataservice.password">root</property>
</config>
<query id="q1" useConfig="default">
<sql>call getCustomer(?,?)</sql>
<result element="Entries" rowName="Entry">
<element name="Flag" column="Flag" xsdType="xs:integer" optional="true" />
<element name="Customer" column="Customer" xsdType="xs:string" optional="true" />
</result>
<param name="NID" sqlType="STRING" ordinal="1" />
<param name="Name" sqlType="STRING" ordinal="2" />
<param name="Flag" sqlType="INTEGER" type="OUT" ordinal="3" />
<param name="Customer" sqlType="STRING" type="OUT" ordinal="4" />
</query>
<operation name="op1">
<call-query href="q1">
<with-param name="NID" query-param="NID" />
<with-param name="Name" query-param="Name" />
</call-query>
</operation>
</data>
And the tentative working procedure call for now is :
DELIMITER //
CREATE procedure getCustomer(NID varchar(200),Name varchar(200))
BEGIN
DECLARE id varchar(200);
DECLARE flag int;
SET Flag = 0;
SET id = CONCAT(NID, '_' , Name);
INSERT INTO Customer(NID, Name, customerID) VALUES(NID, Name, id);
select flag, customerid from customer where customerID = id;
END//

Answer 1

In the query q1 call getCustomer(?,?,?,?) takes 4 arguments and in the input mapping list there are only 2 input params (IN Only). This must be the reason for the this exception. Please refer this tutorial.