phoedos/pmd
1
1
Fork 1
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[doc] Update release notes (#3382)

Browse Source
This commit is contained in:
Andreas Dangel
2021-07-16 11:57:50 +02:00
parent 9b9ce19975
commit 161c9f4923
2 changed files with 29 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
pmd-java/src/main/resources/category/java/errorprone.xml
View File

@ -2852,18 +2852,19 @@ public class Foo {
</example>
</rule>
<rule name="ReturnEmptyCollectionRatherThanNull"
<rule name="ReturnEmptyArrayRatherThanNull"
language="java"
since="6.37.0"
since="4.2"
class="net.sourceforge.pmd.lang.rule.XPathRule"
message="Return an empty collection rather than 'null'."
externalInfoUrl="${pmd.website.baseurl}/pmd_rules_java_errorprone.html#returnemptycollectionratherthannull">
deprecated="true"
message="Return an empty array rather than 'null'."
externalInfoUrl="${pmd.website.baseurl}/pmd_rules_java_errorprone.html#returnemptyarrayratherthannull">
<description>
For any method that returns an collection (such as an array, Collection or Map), it is a better to return an empty one rather than a
For any method that returns an array, it is a better to return an empty array rather than a
null reference. This removes the need for null checking all results and avoids inadvertent
NullPointerExceptions.
See Effective Java, 3rd Edition, Item 54: Return empty collections or arrays instead of null
Deprecated since PMD 6.37.0, use {% rule java/errorprone/ReturnEmptyCollectionRatherThanNull %} instead.
</description>
<priority>1</priority>
<properties>
@ -2873,7 +2874,7 @@ See Effective Java, 3rd Edition, Item 54: Return empty collections or arrays ins
<![CDATA[
//MethodDeclaration
[
(./ResultType/Type[pmd-java:typeIs('java.util.Collection') or pmd-java:typeIs('java.util.Map') or @ArrayType=true()])
(./ResultType/Type[@ArrayType= true()])
and
(./Block/BlockStatement/Statement/ReturnStatement/Expression/PrimaryExpression/PrimaryPrefix/Literal/NullLiteral)
]
@ -2899,20 +2900,19 @@ public class Example {
]]>
</example>
</rule>
<rule name="ReturnEmptyArrayRatherThanNull"
language="java"
since="4.2"
class="net.sourceforge.pmd.lang.rule.XPathRule"
deprecated="true"
message="Return an empty array rather than 'null'."
externalInfoUrl="${pmd.website.baseurl}/pmd_rules_java_errorprone.html#returnemptyarrayratherthannull">
<description>
For any method that returns an array, it is a better to return an empty array rather than a
null reference. This removes the need for null checking all results and avoids inadvertent
NullPointerExceptions.
Deprecated since PMD 6.37.0, use {% rule java/errorprone/ReturnEmptyCollectionRatherThanNull %} instead.
<rule name="ReturnEmptyCollectionRatherThanNull"
language="java"
since="6.37.0"
class="net.sourceforge.pmd.lang.rule.XPathRule"
message="Return an empty collection rather than 'null'."
externalInfoUrl="${pmd.website.baseurl}/pmd_rules_java_errorprone.html#returnemptycollectionratherthannull">
<description>
For any method that returns an collection (such as an array, Collection or Map), it is better to return
an empty one rather than a null reference. This removes the need for null checking all results and avoids
inadvertent NullPointerExceptions.
See Effective Java, 3rd Edition, Item 54: Return empty collections or arrays instead of null
</description>
<priority>1</priority>
<properties>
@ -2922,7 +2922,7 @@ Deprecated since PMD 6.37.0, use {% rule java/errorprone/ReturnEmptyCollectionRa
<![CDATA[
//MethodDeclaration
[
(./ResultType/Type[@ArrayType= true()])
(./ResultType/Type[pmd-java:typeIs('java.util.Collection') or pmd-java:typeIs('java.util.Map') or @ArrayType=true()])
and
(./Block/BlockStatement/Statement/ReturnStatement/Expression/PrimaryExpression/PrimaryPrefix/Literal/NullLiteral)
]