fix the npe issue when @ApolloJsonValue is annotated on methods #67
Conversation
WalkthroughIn Changes
Sequence Diagram(s)sequenceDiagram
participant Application
participant AutoUpdateConfigChangeListener
participant SpringValue
participant ApolloJsonValue
Application->>AutoUpdateConfigChangeListener: Initiates property value resolution
AutoUpdateConfigChangeListener->>SpringValue: Check if field or method parameter
SpringValue-->>AutoUpdateConfigChangeListener: Return type (field/parameter)
AutoUpdateConfigChangeListener->>ApolloJsonValue: Retrieve annotation (if available)
ApolloJsonValue-->>AutoUpdateConfigChangeListener: Return annotation details
AutoUpdateConfigChangeListener->>Application: Return resolved value considering date pattern
Assessment against linked issues
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Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (1)
- apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/AutoUpdateConfigChangeListener.java (1 hunks)
| ApolloJsonValue apolloJsonValue = springValue.isField() ? | ||
| springValue.getField().getAnnotation(ApolloJsonValue.class) : | ||
| springValue.getMethodParameter().getMethodAnnotation(ApolloJsonValue.class); |
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Codebase Verification
Ensure robust handling of ApolloJsonValue annotation retrieval.
The logic to determine whether springValue is a field or a method parameter before retrieving the ApolloJsonValue annotation is crucial to prevent NullPointerExceptions. However, the absence of null checks for springValue.getMethodParameter() and springValue.getField() may still pose a risk. Consider adding null checks for these method calls to ensure robustness.
- Add null checks for
springValue.getMethodParameter()andspringValue.getField()to prevent potential NullPointerExceptions.
Analysis chain
Ensure robust handling of ApolloJsonValue annotation retrieval.
The logic to determine whether springValue is a field or a method parameter before retrieving the ApolloJsonValue annotation is crucial to prevent the NullPointerException as described. This change effectively distinguishes between fields and method parameters, which aligns with the PR's objectives. However, consider adding a null check for springValue.getMethodParameter() and springValue.getField() to ensure robustness.
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify that null checks are considered for method parameters and fields.
# Test: Search for null checks related to method parameters and fields.
rg --type java $'getMethodParameter()' apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/AutoUpdateConfigChangeListener.java
rg --type java $'getField()' apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/AutoUpdateConfigChangeListener.java
Length of output: 592
Script:
#!/bin/bash
# Description: Verify that null checks are considered for method parameters and fields.
# Test: Search for null checks around method parameters and fields.
rg --type java 'springValue.getMethodParameter() != null' apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/AutoUpdateConfigChangeListener.java
rg --type java 'springValue.getField() != null' apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/AutoUpdateConfigChangeListener.java
Length of output: 323
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Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (1)
- apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/AutoUpdateConfigChangeListener.java (1 hunks)
Files skipped from review as they are similar to previous changes (1)
- apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/AutoUpdateConfigChangeListener.java
What's the purpose of this PR
#53 introduced a feature that parses time based on a pattern for
@ApolloJsonValue. However, it caused an issue with NullPointerException (NPE) when@ApolloJsonValueis used as a method annotation. This pull request aims to resolve that issue.Which issue(s) this PR fixes:
Fixes #53
Brief changelog
@ApolloJsonValueis applied to methods.Follow this checklist to help us incorporate your contribution quickly and easily:
mvn clean testto make sure this pull request doesn't break anything.CHANGESlog.Summary by CodeRabbit
resolvePropertyValuemethod to enhance the accuracy of JSON value handling by checking ifspringValueis a field or a method parameter before retrieving theApolloJsonValueannotation. This ensures correctdatePatternretrieval for JSON values.