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https://issues.apache.org/jira/browse/PHOENIX-2861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15259788#comment-15259788
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liusong commented on PHOENIX-2861:
----------------------------------
Here is my code.
https://github.com/oldmanls/phoenix/blob/master/src/main/java/com/fitech/hadoop/phoenix/CharLength.java
> phoenix user-defined function
> -----------------------------
>
> Key: PHOENIX-2861
> URL: https://issues.apache.org/jira/browse/PHOENIX-2861
> Project: Phoenix
> Issue Type: Test
> Affects Versions: 4.4.0
> Environment: hbase 0.98 phoenix4.4
> Reporter: liusong
> Labels: test
> Fix For: 4.4.1
>
> Original Estimate: 101h
> Remaining Estimate: 101h
>
> I'm coding phoenix user-defined function recently.I have a problem when i
> code the function.I need to check the filed is null or not null.I upsert the
> data in phoenix set the filed null.Here is the code.
> String sourceStr = (String)
> getSourceStrExpression().getDataType().toObject(ptr,
> getSourceStrExpression().getSortOrder());
> if (ptr.getLength() == 0) {
> ptr.set(PVarchar.INSTANCE.toBytes("false"));}
> else{
> ptr.set(PVarchar.INSTANCE.toBytes("true"));}
> I always get true in phoenix but i think i will get false.
> How can i check the field is null?
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