Rename "startByte" which hides the field declared at line 31. Open
int startByte = packetWrapper.getStartByte();- Read upRead up
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Overriding or shadowing a variable declared in an outer scope can strongly impact the readability, and therefore the maintainability, of a piece of code. Further, it could lead maintainers to introduce bugs because they think they're using one variable but are really using another.
Noncompliant Code Example
class Foo {
public int myField;
public void doSomething() {
int myField = 0;
...
}
}
See
- CERT, DCL01-C. - Do not reuse variable names in subscopes
- CERT, DCL51-J. - Do not shadow or obscure identifiers in subscopes
Similar blocks of code found in 2 locations. Consider refactoring. Open
@Subscribe
public void analyze(PacketWrapper packetWrapper) {
if (Protocol.get("ICMP").equalsIgnoreCase(packetWrapper.getPacketType())) {
setIcmpHeader(packetWrapper);
String nextPacketType = setNextProtocolType();- Read upRead up
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Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 154.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Similar blocks of code found in 6 locations. Consider refactoring. Open
private void setIcmpHeader(PacketWrapper packetWrapper) {
Packet packet = packetWrapper.getPacket();
int startByte = packetWrapper.getStartByte();
byte[] rawPacket = packet.getRawData();
this.icmpHeader = Arrays.copyOfRange(rawPacket, startByte, startByte + IcmpHeader.TOTAL_HEADER_LENGTH);- Read upRead up
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Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 58.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Identical blocks of code found in 6 locations. Consider refactoring. Open
public void configure(EventBus eventBus, AnalysisRepository repository, String sessionName) {
this.eventBus = eventBus;
this.eventBus.register(this);
this.repository = repository;
this.indexName = "protocol_" + sessionName;- Read upRead up
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Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 50.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Similar blocks of code found in 26 locations. Consider refactoring. Open
public short getCode(byte[] icmpHeader) {
byte[] code = BitOperator.parse(icmpHeader, IcmpHeader.CODE_START_BIT, IcmpHeader.CODE_END_BIT);
short returnVar = ByteOperator.parseBytesshort(code);
return returnVar;
}- Read upRead up
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Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 40.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Similar blocks of code found in 26 locations. Consider refactoring. Open
public short getType_(byte[] icmpHeader) {
byte[] type_ = BitOperator.parse(icmpHeader, IcmpHeader.TYPE__START_BIT, IcmpHeader.TYPE__END_BIT);
short returnVar = ByteOperator.parseBytesshort(type_);
return returnVar;
}- Read upRead up
- Create a ticketCreate a ticket
Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 40.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Local variable name 'type_' must match pattern '^[a-z][a-z0-9][a-zA-Z0-9]*$'. Open
byte[] type_ = BitOperator.parse(icmpHeader, IcmpHeader.TYPE__START_BIT, IcmpHeader.TYPE__END_BIT);- Read upRead up
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Checks that local, non-final variable names conform to a specified pattern.A catch parameter is considered to be a local variable.
This documentation is written and maintained by the Checkstyle community and is covered under the same license as the Checkstyle project.
Line is longer than 100 characters (found 159). Open
IndexQuery query = builder.withIndexName(this.indexName).withType("icmp").withId(String.valueOf(packetWrapper.getPacketId())).withObject(entity).build();- Read upRead up
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Checks for long lines.
Rationale: Long lines are hard to read in printouts or if developershave limited screen space for the source code, e.g. if the IDEdisplays additional information like project tree, class hierarchy,etc.
This documentation is written and maintained by the Checkstyle community and is covered under the same license as the Checkstyle project.
Line is longer than 100 characters (found 103). Open
byte[] type_ = BitOperator.parse(icmpHeader, IcmpHeader.TYPE__START_BIT, IcmpHeader.TYPE__END_BIT);- Read upRead up
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Checks for long lines.
Rationale: Long lines are hard to read in printouts or if developershave limited screen space for the source code, e.g. if the IDEdisplays additional information like project tree, class hierarchy,etc.
This documentation is written and maintained by the Checkstyle community and is covered under the same license as the Checkstyle project.
Line is longer than 100 characters (found 107). Open
this.icmpHeader = Arrays.copyOfRange(rawPacket, startByte, startByte + IcmpHeader.TOTAL_HEADER_LENGTH);- Read upRead up
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Checks for long lines.
Rationale: Long lines are hard to read in printouts or if developershave limited screen space for the source code, e.g. if the IDEdisplays additional information like project tree, class hierarchy,etc.
This documentation is written and maintained by the Checkstyle community and is covered under the same license as the Checkstyle project.
Line is longer than 100 characters (found 121). Open
byte[] hdrchecksum = BitOperator.parse(icmpHeader, IcmpHeader.HDRCHECKSUM_START_BIT, IcmpHeader.HDRCHECKSUM_END_BIT);- Read upRead up
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Checks for long lines.
Rationale: Long lines are hard to read in printouts or if developershave limited screen space for the source code, e.g. if the IDEdisplays additional information like project tree, class hierarchy,etc.
This documentation is written and maintained by the Checkstyle community and is covered under the same license as the Checkstyle project.
Consider simply returning the value vs storing it in local variable 'returnVar' Open
return returnVar;- Read upRead up
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UnnecessaryLocalBeforeReturn
Since: PMD 3.3
Priority: Medium
Categories: Style
Remediation Points: 50000
Avoid the creation of unnecessary local variables
Example:
public class Foo {
public int foo() {
int x = doSomething();
return x; // instead, just 'return doSomething();'
}
}Consider simply returning the value vs storing it in local variable 'returnVar' Open
return returnVar;- Read upRead up
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UnnecessaryLocalBeforeReturn
Since: PMD 3.3
Priority: Medium
Categories: Style
Remediation Points: 50000
Avoid the creation of unnecessary local variables
Example:
public class Foo {
public int foo() {
int x = doSomething();
return x; // instead, just 'return doSomething();'
}
}A switch with less than three branches is inefficient, use a if statement instead. Open
switch(nextHeaderType) {
default: return Protocol.get("END_PROTOCOL");
}- Read upRead up
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TooFewBranchesForASwitchStatement
Since: PMD 4.2
Priority: Medium
Categories: Style
Remediation Points: 50000
Switch statements are intended to be used to support complex branching behaviour. Using a switch for only a few cases is ill-advised, since switches are not as easy to understand as if-then statements. In these cases use the if-then statement to increase code readability.
Example:
// With a minimumNumberCaseForASwitch of 3
public class Foo {
public void bar() {
switch (condition) {
case ONE:
instruction;
break;
default:
break; // not enough for a 'switch' stmt, a simple 'if' stmt would have been more appropriate
}
}
}