ARROW-11341: [Python] [Gandiva] Add NULL/None checks to Gandiva builder functions

[wjones127]

If these functions were passed None as an argument, they caused segfaults. As an example:

import pyarrow
import pyarrow.gandiva as gandiva

builder = gandiva.TreeExprBuilder()
field = pyarrow.field('whatever', type=pyarrow.date64())
date_col = builder.make_field(field)

func = builder.make_function('less_than_or_equal_to', [date_col, None], pyarrow.bool_())

condition = builder.make_condition(func)

# Will segfault on this line:
gandiva.make_filter(pyarrow.schema([field]), condition)

[github-actions]

https://issues.apache.org/jira/browse/ARROW-11341

[projjal]

How about you add an unit test with none node that originally segfaults.

[wjones127]

Good call on the tests. Looks like we are still getting a segfault. I will look into that later today.

[wjones127]

@projjal Should be good to review now.

[wjones127]

@jorisvandenbossche Would you have time to review and/or merge?

[wjones127]

Had this sitting around, but would still like to get this done. Just rebased, @jorisvandenbossche would you mind reviewing?

[pitrou]

Sorry for the delay @wjones127 . This looks good to me, but can you rebase to ensure it works with latest git master?

[lidavidm]

Thanks for persisting with this Will!

[wjones127]

Thank you for merging @lidavidm !

[ursabot]

Benchmark runs are scheduled for baseline = 861f237 and contender = 03e80dc. 03e80dc is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Finished ⬇️0.0% ⬆️0.0%] ec2-t3-xlarge-us-east-2
[Failed ⬇️0.44% ⬆️0.03%] test-mac-arm
[Failed ⬇️0.0% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.39% ⬆️0.0%] ursa-thinkcentre-m75q
Buildkite builds:
[Finished] 03e80dc1 ec2-t3-xlarge-us-east-2
[Finished] 03e80dc1 test-mac-arm
[Failed] 03e80dc1 ursa-i9-9960x
[Finished] 03e80dc1 ursa-thinkcentre-m75q
[Finished] 861f2371 ec2-t3-xlarge-us-east-2
[Failed] 861f2371 test-mac-arm
[Failed] 861f2371 ursa-i9-9960x
[Finished] 861f2371 ursa-thinkcentre-m75q
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java