[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Namit Jain updated HIVE-471:
Status: Resolved (was: Patch Available)
Hadoop Flags: [Reviewed]
Resolution: Fixed
Committed. Thanks Edward
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.6.0
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Fix For: 0.7.0
>
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, HIVE-471.4.patch, HIVE-471.5.patch, HIVE-471.6.patch.txt,
> hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated HIVE-471:
-
Status: Patch Available (was: Open)
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.6.0
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Fix For: 0.7.0
>
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, HIVE-471.4.patch, HIVE-471.5.patch, HIVE-471.6.patch.txt,
> hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated HIVE-471:
-
Attachment: HIVE-471.6.patch.txt
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.6.0
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Fix For: 0.7.0
>
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, HIVE-471.4.patch, HIVE-471.5.patch, HIVE-471.6.patch.txt,
> hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Namit Jain updated HIVE-471:
Status: Open (was: Patch Available)
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.6.0
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Fix For: 0.7.0
>
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, HIVE-471.4.patch, HIVE-471.5.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated HIVE-471:
-
Status: Patch Available (was: Open)
Affects Version/s: 0.6.0
(was: 0.5.1)
Fix Version/s: 0.7.0
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.6.0
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Fix For: 0.7.0
>
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, HIVE-471.4.patch, HIVE-471.5.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated HIVE-471:
-
Attachment: HIVE-471.5.patch
Almost two years in the making!
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.5.1
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, HIVE-471.4.patch, HIVE-471.5.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Namit Jain updated HIVE-471:
Status: Open (was: Patch Available)
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.5.1
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, HIVE-471.4.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated HIVE-471:
-
Attachment: HIVE-471.4.patch
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.5.1
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, HIVE-471.4.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated HIVE-471:
-
Status: Patch Available (was: Open)
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.5.1
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, HIVE-471.4.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Namit Jain updated HIVE-471:
Status: Open (was: Patch Available)
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.5.1
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Fix For: 0.6.0
>
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated HIVE-471:
-
Fix Version/s: 0.6.0
Affects Version/s: 0.5.1
(was: 0.6.0)
Should be good for trunk.
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.5.1
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Fix For: 0.6.0
>
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated HIVE-471:
-
Attachment: HIVE-471.3.patch
Patch adds apache header, adds annotations for description, adds annotation for
Deterministic=false
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.6.0
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> HIVE-471.3.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zheng Shao updated HIVE-471:
Attachment: HIVE-471.2.patch
This patch adds comments to explain why we use
ObjectInspectorUtils.compare(...).
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.6.0
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, HIVE-471.2.patch,
> hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zheng Shao updated HIVE-471:
Affects Version/s: 0.6.0
Status: Patch Available (was: Open)
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Affects Versions: 0.6.0
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zheng Shao updated HIVE-471:
Status: Open (was: Patch Available)
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zheng Shao updated HIVE-471:
Attachment: HIVE-471.1.patch
Hi Edward, I modified your patch to make it work.
Can you take a look and let me know any questions? It will be great to add
enough comments in the code to make it clear to other developers.
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Attachments: hive-471-gen.diff, HIVE-471.1.patch, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Namit Jain updated HIVE-471:
Fix Version/s: (was: 0.5.0)
It would be good to get it in - but it is not a blocker for 0.5
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Attachments: hive-471-gen.diff, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated HIVE-471:
-
Attachment: hive-471-gen.diff
I updated the reflection UDF to attempt to use GenericUDF.
I have a couple questions and I can use suggestions:
{noformat}
Text t = new Text();
t.set(""+result);
return t;
{noformat}
I am currently doing this. I was under the impression that a GenericUDF can
return anything. However my return is based on the output of reflection. It
could be any type including void. How can I control the return type.
{noformat}
reflect("java.lang.String", "valueOf", 1)
{noformat}
In this case the reflection fails because of a Hive conversion.
no method java.lang.NoSuchMethodException:
java.lang.String.valueOf(org.apache.hadoop.io.IntWritable)
Should I write a function to do some auto boxing? If so, is there any
predefined conversions I can use as a guide? What types can I expect and so on?
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Fix For: 0.4.0
>
> Attachments: hive-471-gen.diff, hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated HIVE-471:
-
Status: Patch Available (was: Open)
Patch adds basic features.
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Fix For: 0.4.0
>
> Attachments: hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (HIVE-471) A UDF for simple reflection
[
https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated HIVE-471:
-
Attachment: hive-471.diff
Patch implements basic reflection features.
> A UDF for simple reflection
> ---
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
>Reporter: Edward Capriolo
>Assignee: Edward Capriolo
>Priority: Minor
> Fix For: 0.4.0
>
> Attachments: hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
