java-refactoring-remove-parameter

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Original

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Translation

Chinese

Refactoring Java Methods with Remove Parameter

使用Remove Parameter重构Java方法

Role

角色

You are an expert in refactoring Java methods.

Below are 2 examples (with titles code before and code after refactoring) that represents Remove Parameter.

您是Java方法重构领域的专家。

以下是2个代表Remove Parameter手法的示例（包含重构前和重构后的代码标题）。

Code Before Refactoring 1:

重构前代码1:

java

public Backend selectBackendForGroupCommit(long tableId, ConnectContext context, boolean isCloud)
        throws LoadException, DdlException {
    if (!Env.getCurrentEnv().isMaster()) {
        try {
            long backendId = new MasterOpExecutor(context)
                    .getGroupCommitLoadBeId(tableId, context.getCloudCluster(), isCloud);
            return Env.getCurrentSystemInfo().getBackend(backendId);
        } catch (Exception e) {
            throw new LoadException(e.getMessage());
        }
    } else {
        return Env.getCurrentSystemInfo()
                .getBackend(selectBackendForGroupCommitInternal(tableId, context.getCloudCluster(), isCloud));
    }
}

java

public Backend selectBackendForGroupCommit(long tableId, ConnectContext context, boolean isCloud)
        throws LoadException, DdlException {
    if (!Env.getCurrentEnv().isMaster()) {
        try {
            long backendId = new MasterOpExecutor(context)
                    .getGroupCommitLoadBeId(tableId, context.getCloudCluster(), isCloud);
            return Env.getCurrentSystemInfo().getBackend(backendId);
        } catch (Exception e) {
            throw new LoadException(e.getMessage());
        }
    } else {
        return Env.getCurrentSystemInfo()
                .getBackend(selectBackendForGroupCommitInternal(tableId, context.getCloudCluster(), isCloud));
    }
}

Code After Refactoring 1:

重构后代码1:

java

public Backend selectBackendForGroupCommit(long tableId, ConnectContext context)
        throws LoadException, DdlException {
    if (!Env.getCurrentEnv().isMaster()) {
        try {
            long backendId = new MasterOpExecutor(context)
                    .getGroupCommitLoadBeId(tableId, context.getCloudCluster());
            return Env.getCurrentSystemInfo().getBackend(backendId);
        } catch (Exception e) {
            throw new LoadException(e.getMessage());
        }
    } else {
        return Env.getCurrentSystemInfo()
                .getBackend(selectBackendForGroupCommitInternal(tableId, context.getCloudCluster()));
    }
}

java

public Backend selectBackendForGroupCommit(long tableId, ConnectContext context)
        throws LoadException, DdlException {
    if (!Env.getCurrentEnv().isMaster()) {
        try {
            long backendId = new MasterOpExecutor(context)
                    .getGroupCommitLoadBeId(tableId, context.getCloudCluster());
            return Env.getCurrentSystemInfo().getBackend(backendId);
        } catch (Exception e) {
            throw new LoadException(e.getMessage());
        }
    } else {
        return Env.getCurrentSystemInfo()
                .getBackend(selectBackendForGroupCommitInternal(tableId, context.getCloudCluster()));
    }
}

Code Before Refactoring 2:

重构前代码2:

java

NodeImpl( long id, long firstRel, long firstProp )
{
     this( id, false );
}

java

NodeImpl( long id, long firstRel, long firstProp )
{
     this( id, false );
}

Code After Refactoring 2:

重构后代码2:

java

NodeImpl( long id)
{
     this( id, false );
}

java

NodeImpl( long id)
{
     this( id, false );
}

Task

任务

Apply Remove Parameter to improve readability, testability, maintainability, reusability, modularity, cohesion, low coupling, and consistency.

Always return a complete and compilable method (Java 17).

Perform intermediate steps internally:

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).
For each qualifying method, remove the unnecessary parameters from its definition and from all its internal calls.
Ensure that the method continues to function correctly after parameter removal.
Output only the refactored code inside a single
```
java
```
block.
Do not remove any functionality from the original method.
Include a one-line comment above each modified method indicating which parameter was removed and why.

应用Remove Parameter手法来提升代码的可读性、可测试性、可维护性、可复用性、模块化程度、内聚性、低耦合性以及一致性。

请始终返回完整且可编译的方法（基于Java 17）。

内部执行中间步骤：

首先，分析每个方法并识别未使用或冗余的参数（即可以从类字段、常量或其他方法调用中获取值的参数）。
对于每个符合条件的方法，从其定义和所有内部调用中移除不必要的参数。
确保参数移除后方法仍能正常运行。
仅在单个
```
java
```
块中输出重构后的代码。
不得移除原方法的任何功能。
在每个修改后的方法上方添加一行注释，说明移除了哪个参数以及原因。

Code to be Refactored:

待重构代码：

Now, assess all methods with unused parameters and refactor them using Remove Parameter

现在，请评估所有包含未使用参数的方法，并使用Remove Parameter手法对其进行重构