org.apache.flink.table.codesplit

类 IfStatementRewriter

java.lang.Object

org.apache.flink.table.codesplit.IfStatementRewriter

所有已实现的接口:

CodeRewriter

@Internal
public class IfStatementRewriter
extends Object
implements CodeRewriter

Extract true and false branch of IFs and ELSEs in long methods into two smaller methods.

This rewriter only deals with functions without return values. Functions with return values should have been converted by ReturnValueRewriter. Also, this rewriter will not extract blocks containing return statements for correctness.

Before

 public class Example {
     int b;
     public void myFun(int a) {
         if (a > 0) {
             b = a * 2;
             System.out.println(b);
         } else {
             b = a * 3;
             System.out.println(b);
         }
     }
 }
 

After

 public class Example {
     int b;
     public void myFun(int a) {
         if (a > 0) {
             myFun_trueFilter1(a);
         } else {
             myFun_falseFilter2(a);
         }
     }
     void myFun_trueFilter1(int a) {
         b = a * 2;
         System.out.println(b);
     }
     void myFun_falseFilter2(int a) {
         b = a * 3;
         System.out.println(b);
     }
 }
 

构造器概要

构造器

构造器和说明
IfStatementRewriter(String code, long maxMethodLength)

方法概要

限定符和类型	方法和说明
String	rewrite()

从类继承的方法 java.lang.Object

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

构造器详细资料

IfStatementRewriter

public IfStatementRewriter(String code,
                           long maxMethodLength)

方法详细资料

rewrite

public String rewrite()

指定者:

rewrite 在接口中 CodeRewriter