org.apache.flink.table.codesplit

Class DeclarationRewriter

java.lang.Object

org.apache.flink.table.codesplit.DeclarationRewriter

All Implemented Interfaces:

CodeRewriter

@Internal
public class DeclarationRewriter
extends Object
implements CodeRewriter

Extract and rename local variables into member variables.

This rewriter only deals with functions without return values. Functions with return values should have been converted by ReturnValueRewriter.

Before

 public class Example {
     public void myFun1(int[] arr) {
         int a = 1;
         for (int b : arr) {
             System.out.println(b);
         }
     }
     public void myFun2() {
         int a = 2;
     }
 }
 

After

 public class Example {
     int a;
     int local$0;
     int local$1;
     public void myFun1(int[] arr) {
         a = 1;
         for (int b : arr) {
             local$0 = b;
             System.out.println(local$0);
         }
     }
     public void myFun2() {
         local$1 = 2;
     }
 }
 

Constructor Summary

Constructors

Constructor and Description
DeclarationRewriter(String code, int maxMethodLength)

Method Summary

Modifier and Type	Method and Description
String	rewrite()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DeclarationRewriter

public DeclarationRewriter(String code,
                           int maxMethodLength)

Method Detail

rewrite

public String rewrite()

Specified by:

rewrite in interface CodeRewriter