|
| 1 | +--- |
| 2 | +title: 'Refactoring Java Methods with Remove Parameter' |
| 3 | +mode: 'agent' |
| 4 | +description: 'Refactoring using Remove Parameter in Java Language' |
| 5 | +--- |
| 6 | + |
| 7 | +# Refactoring Java Methods with Remove Parameter |
| 8 | + |
| 9 | +## Role |
| 10 | + |
| 11 | +You are an expert in refactoring Java methods. |
| 12 | + |
| 13 | +Below are **2 examples** (with titles code before and code after refactoring) that represents **Remove Parameter**. |
| 14 | + |
| 15 | +## Code Before Refactoring 1: |
| 16 | +```java |
| 17 | +public Backend selectBackendForGroupCommit(long tableId, ConnectContext context, boolean isCloud) |
| 18 | + throws LoadException, DdlException { |
| 19 | + if (!Env.getCurrentEnv().isMaster()) { |
| 20 | + try { |
| 21 | + long backendId = new MasterOpExecutor(context) |
| 22 | + .getGroupCommitLoadBeId(tableId, context.getCloudCluster(), isCloud); |
| 23 | + return Env.getCurrentSystemInfo().getBackend(backendId); |
| 24 | + } catch (Exception e) { |
| 25 | + throw new LoadException(e.getMessage()); |
| 26 | + } |
| 27 | + } else { |
| 28 | + return Env.getCurrentSystemInfo() |
| 29 | + .getBackend(selectBackendForGroupCommitInternal(tableId, context.getCloudCluster(), isCloud)); |
| 30 | + } |
| 31 | +} |
| 32 | +``` |
| 33 | + |
| 34 | +## Code After Refactoring 1: |
| 35 | +```java |
| 36 | +public Backend selectBackendForGroupCommit(long tableId, ConnectContext context) |
| 37 | + throws LoadException, DdlException { |
| 38 | + if (!Env.getCurrentEnv().isMaster()) { |
| 39 | + try { |
| 40 | + long backendId = new MasterOpExecutor(context) |
| 41 | + .getGroupCommitLoadBeId(tableId, context.getCloudCluster()); |
| 42 | + return Env.getCurrentSystemInfo().getBackend(backendId); |
| 43 | + } catch (Exception e) { |
| 44 | + throw new LoadException(e.getMessage()); |
| 45 | + } |
| 46 | + } else { |
| 47 | + return Env.getCurrentSystemInfo() |
| 48 | + .getBackend(selectBackendForGroupCommitInternal(tableId, context.getCloudCluster())); |
| 49 | + } |
| 50 | +} |
| 51 | +``` |
| 52 | + |
| 53 | +## Code Before Refactoring 2: |
| 54 | +```java |
| 55 | +NodeImpl( long id, long firstRel, long firstProp ) |
| 56 | +{ |
| 57 | + this( id, false ); |
| 58 | +} |
| 59 | +``` |
| 60 | + |
| 61 | +## Code After Refactoring 2: |
| 62 | +```java |
| 63 | +NodeImpl( long id) |
| 64 | +{ |
| 65 | + this( id, false ); |
| 66 | +} |
| 67 | +``` |
| 68 | + |
| 69 | +## Task |
| 70 | + |
| 71 | +Apply **Remove Parameter** to improve readability, testability, maintainability, reusability, modularity, cohesion, low coupling, and consistency. |
| 72 | + |
| 73 | +Always return a complete and compilable method (Java 17). |
| 74 | + |
| 75 | +Perform intermediate steps internally: |
| 76 | +- First, analyze each method and identify parameters that are unused or redundant (i.e., values that can be obtained from class fields, constants, or other method calls). |
| 77 | +- For each qualifying method, remove the unnecessary parameters from its definition and from all its internal calls. |
| 78 | +- Ensure that the method continues to function correctly after parameter removal. |
| 79 | +- Output only the refactored code inside a single ```java``` block. |
| 80 | +- Do not remove any functionality from the original method. |
| 81 | +- Include a one-line comment above each modified method indicating which parameter was removed and why. |
| 82 | + |
| 83 | +## Code to be Refactored: |
| 84 | + |
| 85 | +Now, assess all methods with unused parameters and refactor them using **Remove Parameter** |
0 commit comments