Package org.apache.flink.table.codesplit

Class AddBoolBeforeReturnRewriter

  • All Implemented Interfaces:
    CodeRewriter
    @Internal
public class AddBoolBeforeReturnRewriter
extends Object
implements CodeRewriter
    A helper class of FunctionSplitter.

    Add a boolean variable before each return statement so that when the function is split, the outer function can determine whether to return early with this boolean variable.

    The name of the variable is stored in a list of map. Index of list is the index of class (outer class is 0, 1st inner class is 1, 2nd inner class is 2, etc.), key of map is function name and its parameters.

    Before 

    
 public class Example {
     public void myFun(int[] a) {
         if (a[0] > 0) {
             a[0] += 5;
             return;
         }
         a[0] -= 5;
         return;
     }
 }

    After 

    
 public class Example {
     boolean myFunHasReturned$0;

     public void myFun(int[] a) {
         if (a[0] > 0) {
             a[0] += 5;
             {
                 myFunHasReturned$0 = true;
                 return;
             }
         }
         a[0] -= 5;
         {
             myFunHasReturned$0 = true;
             return;
         }
     }
 }

    • Constructor Detail

      • AddBoolBeforeReturnRewriter

        public AddBoolBeforeReturnRewriter​(String code,
                                   int maxMethodLength)