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https://issues.apache.org/jira/browse/JDO-652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16696196#comment-16696196
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Tilmann Zäschke edited comment on JDO-652 at 11/22/18 6:46 PM:
---------------------------------------------------------------
I get a few compilation errors when trying to compile the generated
{{QOptionalSample}} class (after adding {{@PersistenceCapable}} to
{{org.apache.jdo.tck.pc.query.OptionalSample}}):
{code:java}
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[42,70]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[43,72]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[44,75]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[45,74]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[52,70]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[53,72]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[54,75]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[55,74]
error: cannot find symbol
{code}
It looks like it is creating expressions of type {{Optional<T>}} while it
should should be {{Optional<Date>}} (or similar), for example in line 43:
{code:java}
this.optionalDate = new
ObjectExpressionImpl<java.util.Optional<T>>(this, "optionalDate");
{code}
The class fields is (correctly) defined as:
{code:java}
public final ObjectExpression<java.util.Optional<java.util.Date>>
optionalDate;
{code}
Is there something else I should be doing?
was (Author: tilmann):
I get a few compilation errors when trying to compile the generated
{{QOptionalSample}} class (after adding {{@PersistenceCapable}} to
{{org.apache.jdo.tck.pc.query.OptionalSample}}):
{code:java}
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[42,70]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[43,72]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[44,75]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[45,74]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[52,70]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[53,72]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[54,75]
error: cannot find symbol
[ERROR]
\projects\workspace-zoo\JDO-trunk-commit\trunk\tck\target\generated-sources\annotations\org\apache\jdo\tck\pc\query\QOptionalSample.java:[55,74]
error: cannot find symbol
{code}
It looks like it is creating expressions of type {{Optional<T>}} while it
should should be {{Optional<Date>}} (or similar), for example in line 43:
{code:java}
this.optionalDate = new
ObjectExpressionImpl<java.util.Optional<T>>(this, "optionalDate");
{code}
The class fields is (correctly) defined as:
{code:java}
public final ObjectExpression<java.util.Optional<java.util.Date>>
optionalDate;
{code}
Is there something else I should be doing?
> Provision of a typesafe refactor-friendly query capability for JDOQL
> --------------------------------------------------------------------
>
> Key: JDO-652
> URL: https://issues.apache.org/jira/browse/JDO-652
> Project: JDO
> Issue Type: New Feature
> Components: api, specification, tck
> Reporter: Andy Jefferson
> Assignee: Michael Bouschen
> Priority: Major
> Fix For: JDO 3.2
>
> Attachments: JDO-652-api-ifTheElse.txt, JDO-652-api-patch-Andy.txt,
> JDO-652-patch4.txt, typesafe.patch, typesafe_manifest.patch
>
>
> There are various querying capabilities of this type around. JPA2 has its
> Criteria query API. Third party solutions like QueryDSL also exist, in its
> case providing a JDOQL implementation (as well as JPQL, and HQL). We should
> seriously consider introducing something along these lines in the JDO2.4
> timeframe.
> There is a comparison of JPA Criteria with QueryDSL over at
> http://source.mysema.com/forum/mvnforum/viewthread_thread,49
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