Hi, everyone. I have a confusion. I build the tutorial of thrift (version 0.8)
by java, input commands according to README:
1, thrift/tutorial$ thrift -r -gen java tutorial.thrift
2, thrift/tutorial/java$ ant
3, thrift/tutorial/java$ ./JavaServer
4, thrift/tutorial/java$ ./JavaClient
output:
server:
Starting the simple server...
Starting the secure server...
ping()
add(1,1)
calculate(1, {DIVIDE,1,0})
...
client:
ping()
1+1=2
Whoa we can divide by 0
15-10=5
Check log: 5
When server execute "1 DIVIDE 0", I found "InvalidOperation" has been thrown in
"CalculatorHandler.java" :
InvalidOperation io = new InvalidOperation();
io.what = work.op.getValue();
io.why = "Cannot divide by 0";
throw io;
But, it does not work. Server (JavaServer.java) returns struct, which contains
exception (InvalidOperation) back to client, but when client execute "int
quotient = client.calculate(1, work);", the exception (InvalidOperation) has
lost. Client code:
try {
int quotient = client.calculate(1, work);
System.out.println("result is:" + quotient);
System.out.println("Whoa we can divide by 0");
} catch (InvalidOperation io) {
System.out.println("Invalid operation: " + io.why); // would not be
execute, but it should be when 1 DIVIDE 0
}
So, I follow the code automatically generated by thrift with tutorial.thrift. I
found the line "struct.setSuccessIsSet(true);" (line 2523 in Calculator.java)
is the reason. If the line is be executed, client would receive success against
exception (InvalidOperation).
Could anybody tell me why thrift do this?
Thanks a lot.
Bob Zhang
email: [email protected] [email protected]
MSN: [email protected]
