Arrow-582: [Java] Added JSON read/write support for Date, Time and TImestamp types

[BryanCutler]

Modified JsonFileReader and JsonFileWriter to support Date and Time types. Date is written out as a Java Long and Time is written as a Java Integer.

Added new unit test to verify read/write of JSON for Date, Time and Timestamp with milliseconds types.

[wesm]

Can you add tests for nanoseconds with integer values exceeding 2^32?

[BryanCutler]

sure

[BryanCutler]

@wesm , do you mean a TIME type exceeding 2^32 nanoseconds or a TIMESTAMPNANO type?

[julienledem]

@wesm @BryanCutler: I think the current TimeVector in java is milliseconds only

[wesm]

@BryanCutler @julienledem do you want to coordinate to pick up the JSON support so we can get integration tests going? I will try to complete the C++ side sometime in the next week

[julienledem]

depends on: #407

[BryanCutler]

It will be great to get this going! I should have some time in the next day or so to finish this up. @julienledem , does this also depend on ARROW-663 for additional vector value accessors? I think it should work now for 32-bit ints so maybe just get it working for TIME in milliseconds?

[wesm]

I just opened ARROW-729. This is effectively blocked until ARROW-663 and 729 are done

[BryanCutler]

@wesm would you still want the JSON read/write test from here? It doesn't look like the other PR had any

[wesm]

I think it's in there -- the integration tests pass

[BryanCutler]

Not the integration tests, just on the Java side that test the Java JSON reader/writer are working java/vector/src/test/java/org/apache/arrow/vector/file/json/TestJSONFile.java

https://github.com/apache/arrow/pull/366/files#diff-3166d7551b45955e3608b1a9deb0a13cR123

[wesm]

Ah sorry, I misread. Can you submit a rebased patch with the unit tests, that would be great. Much obliged

[BryanCutler]

sure, just made #495