[GitHub] flink pull request #4140: [FLINK-6943] Improve exceptions within TypeExtract...
Github user asfgit closed the pull request at: https://github.com/apache/flink/pull/4140 --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---
[GitHub] flink pull request #4140: [FLINK-6943] Improve exceptions within TypeExtract...
Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/4140#discussion_r122711527
--- Diff:
flink-core/src/main/java/org/apache/flink/api/java/typeutils/TypeExtractionUtils.java
---
@@ -215,22 +215,33 @@ public static Type extractTypeArgument(Type t, int
index) throws InvalidTypesExc
* Extracts a Single Abstract Method (SAM) as defined in Java
Specification (4.3.2. The Class Object,
* 9.8 Functional Interfaces, 9.4.3 Interface Method Body) from given
class.
*
-* @param baseClass
-* @throws InvalidTypesException if the given class does not implement
-* @return
+* @param baseClass a class that is a FunctionalInterface to retrieve a
SAM from
+* @throws InvalidTypesException if the given class does not implement
FunctionalInterface
+* @return single abstract method of the given class
*/
public static Method getSingleAbstractMethod(Class baseClass) {
+
+ if (!baseClass.isInterface()) {
+ throw new InvalidTypesException("FunctionalInterface
must be an interface");
--- End diff --
My main concern is consistency with other exception messages; they all
include the base class.
I would suggest "... is not a FunctionalInterface."; i don't think we need
the "which implies..." bit.
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[GitHub] flink pull request #4140: [FLINK-6943] Improve exceptions within TypeExtract...
Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/4140#discussion_r122707710
--- Diff:
flink-core/src/main/java/org/apache/flink/api/java/typeutils/TypeExtractionUtils.java
---
@@ -215,22 +215,33 @@ public static Type extractTypeArgument(Type t, int
index) throws InvalidTypesExc
* Extracts a Single Abstract Method (SAM) as defined in Java
Specification (4.3.2. The Class Object,
* 9.8 Functional Interfaces, 9.4.3 Interface Method Body) from given
class.
*
-* @param baseClass
-* @throws InvalidTypesException if the given class does not implement
-* @return
+* @param baseClass a class that is a FunctionalInterface to retrieve a
SAM from
+* @throws InvalidTypesException if the given class does not implement
FunctionalInterface
+* @return single abstract method of the given class
*/
public static Method getSingleAbstractMethod(Class baseClass) {
+
+ if (!baseClass.isInterface()) {
+ throw new InvalidTypesException("FunctionalInterface
must be an interface");
--- End diff --
Shouldn't this say "Given class ... must be an interface."?
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[GitHub] flink pull request #4140: [FLINK-6943] Improve exceptions within TypeExtract...
Github user dawidwys commented on a diff in the pull request:
https://github.com/apache/flink/pull/4140#discussion_r122708789
--- Diff:
flink-core/src/main/java/org/apache/flink/api/java/typeutils/TypeExtractionUtils.java
---
@@ -215,22 +215,33 @@ public static Type extractTypeArgument(Type t, int
index) throws InvalidTypesExc
* Extracts a Single Abstract Method (SAM) as defined in Java
Specification (4.3.2. The Class Object,
* 9.8 Functional Interfaces, 9.4.3 Interface Method Body) from given
class.
*
-* @param baseClass
-* @throws InvalidTypesException if the given class does not implement
-* @return
+* @param baseClass a class that is a FunctionalInterface to retrieve a
SAM from
+* @throws InvalidTypesException if the given class does not implement
FunctionalInterface
+* @return single abstract method of the given class
*/
public static Method getSingleAbstractMethod(Class baseClass) {
+
+ if (!baseClass.isInterface()) {
+ throw new InvalidTypesException("FunctionalInterface
must be an interface");
--- End diff --
Yes and no, I would say. Given class must be a FunctionalInterface which
implies it has to be an interface. If you feel. How about such a message:
"Given class must be a FunctionalInterface which implies it has to be an
interface."?
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[GitHub] flink pull request #4140: [FLINK-6943] Improve exceptions within TypeExtract...
GitHub user dawidwys opened a pull request:
https://github.com/apache/flink/pull/4140
[FLINK-6943] Improve exceptions within TypeExtractionUtils#getSingleAâ¦
â¦bstractMethod
Thanks for contributing to Apache Flink. Before you open your pull request,
please take the following check list into consideration.
If your changes take all of the items into account, feel free to open your
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In addition to going through the list, please provide a meaningful
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- [ ] General
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title text")
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- [ ] Documentation
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- [ ] Tests & Build
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dawidwys/flink flink6943
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/4140.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #4140
commit 316afb3085486186a098b4aa9607a0b269a5312b
Author: Dawid Wysakowicz
Date: 2017-06-19T07:38:25Z
[FLINK-6943] Improve exceptions within
TypeExtractionUtils#getSingleAbstractMethod
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