[
https://issues.apache.org/jira/browse/HIVE-25297?focusedWorklogId=617515&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-617515
]
ASF GitHub Bot logged work on HIVE-25297:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 01/Jul/21 11:07
Start Date: 01/Jul/21 11:07
Worklog Time Spent: 10m
Work Description: ashish-kumar-sharma commented on a change in pull
request #2437:
URL: https://github.com/apache/hive/pull/2437#discussion_r662175526
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFDateDiff.java
##########
@@ -64,121 +66,46 @@
+ " 1")
@VectorizedExpressions({VectorUDFDateDiffColScalar.class,
VectorUDFDateDiffColCol.class, VectorUDFDateDiffScalarCol.class})
public class GenericUDFDateDiff extends GenericUDF {
- private transient Converter inputConverter1;
- private transient Converter inputConverter2;
+ private final transient Converter[] tsConverters = new Converter[2];
private IntWritable output = new IntWritable();
- private transient PrimitiveCategory inputType1;
- private transient PrimitiveCategory inputType2;
- private IntWritable result = new IntWritable();
+ private final transient PrimitiveCategory[] tsInputTypes = new
PrimitiveCategory[2];
+
public GenericUDFDateDiff() {
}
@Override
public ObjectInspector initialize(ObjectInspector[] arguments) throws
UDFArgumentException {
- if (arguments.length != 2) {
- throw new UDFArgumentLengthException(
- "datediff() requires 2 argument, got " + arguments.length);
- }
- inputConverter1 = checkArguments(arguments, 0);
- inputConverter2 = checkArguments(arguments, 1);
- inputType1 = ((PrimitiveObjectInspector)
arguments[0]).getPrimitiveCategory();
- inputType2 = ((PrimitiveObjectInspector)
arguments[1]).getPrimitiveCategory();
- ObjectInspector outputOI =
PrimitiveObjectInspectorFactory.writableIntObjectInspector;
- return outputOI;
+ checkArgsSize(arguments,2,2);
+ checkArgPrimitive(arguments, 0);
+ checkArgPrimitive(arguments, 1);
+ checkArgGroups(arguments, 0, tsInputTypes, STRING_GROUP, DATE_GROUP);
+ checkArgGroups(arguments, 1, tsInputTypes, STRING_GROUP, DATE_GROUP);
+ obtainTimestampConverter(arguments,0, tsInputTypes, tsConverters);
+ obtainTimestampConverter(arguments,1, tsInputTypes, tsConverters);
+ return PrimitiveObjectInspectorFactory.writableIntObjectInspector;
}
@Override
public IntWritable evaluate(DeferredObject[] arguments) throws HiveException
{
- output = evaluate(convertToDate(inputType1, inputConverter1, arguments[0]),
- convertToDate(inputType2, inputConverter2, arguments[1]));
- return output;
- }
- @Override
- public String getDisplayString(String[] children) {
- return getStandardDisplayString("datediff", children);
- }
+ Timestamp ts1 = getTimestampValue(arguments, 0, tsConverters);
+ Timestamp ts2 = getTimestampValue(arguments, 1, tsConverters);
- @Nullable
- private Date convertToDate(PrimitiveCategory inputType, Converter converter,
DeferredObject argument)
- throws HiveException {
- assert(converter != null);
- assert(argument != null);
- if (argument.get() == null) {
- return null;
- }
- switch (inputType) {
- case STRING:
- case VARCHAR:
- case CHAR: {
- String dateString = converter.convert(argument.get()).toString();
- Date date = DateParser.parseDate(dateString);
- if (date != null) {
- return date;
- }
- Timestamp ts =
PrimitiveObjectInspectorUtils.getTimestampFromString(dateString);
- if (ts != null) {
- return Date.ofEpochMilli(ts.toEpochMilli());
- }
+ if (ts1 == null || ts2 == null) {
return null;
}
- case TIMESTAMP:
- Timestamp ts = ((TimestampWritableV2) converter.convert(argument.get()))
- .getTimestamp();
- return Date.ofEpochMilli(ts.toEpochMilli());
- case DATE:
- DateWritableV2 dw = (DateWritableV2) converter.convert(argument.get());
- return dw.get();
- case TIMESTAMPLOCALTZ:
- TimestampTZ tsz = ((TimestampLocalTZWritable)
converter.convert(argument.get()))
- .getTimestampTZ();
- return Date.ofEpochMilli(tsz.getEpochSecond() * 1000l);
- default:
- throw new UDFArgumentException(
- "TO_DATE() only takes STRING/TIMESTAMP/TIMESTAMPLOCALTZ types, got " +
inputType);
- }
- }
- private Converter checkArguments(ObjectInspector[] arguments, int i) throws
UDFArgumentException {
- if (arguments[i].getCategory() != ObjectInspector.Category.PRIMITIVE) {
- throw new UDFArgumentTypeException(0,
- "Only primitive type arguments are accepted but "
- + arguments[i].getTypeName() + " is passed. as first arguments");
- }
- final PrimitiveCategory inputType =
- ((PrimitiveObjectInspector) arguments[i]).getPrimitiveCategory();
- switch (inputType) {
- case STRING:
- case VARCHAR:
- case CHAR:
- return ObjectInspectorConverters.getConverter(arguments[i],
- PrimitiveObjectInspectorFactory.writableStringObjectInspector);
- case TIMESTAMP:
- return new TimestampConverter((PrimitiveObjectInspector) arguments[i],
- PrimitiveObjectInspectorFactory.writableTimestampObjectInspector);
- case TIMESTAMPLOCALTZ:
- return new PrimitiveObjectInspectorConverter.TimestampLocalTZConverter(
- (PrimitiveObjectInspector) arguments[i],
- PrimitiveObjectInspectorFactory.writableTimestampTZObjectInspector
- );
- case DATE:
- return ObjectInspectorConverters.getConverter(arguments[i],
- PrimitiveObjectInspectorFactory.writableDateObjectInspector);
- default:
- throw new UDFArgumentException(
- " DATEDIFF() only takes
STRING/TIMESTAMP/DATEWRITABLE/TIMESTAMPLOCALTZ types as " + (i + 1)
- + "-th argument, got " + inputType);
- }
- }
+ Date date1 = Date.ofEpochMilli(ts1.toEpochMilli());
+ Date date2 = Date.ofEpochMilli(ts2.toEpochMilli());
- private IntWritable evaluate(Date date, Date date2) {
-
- if (date == null || date2 == null) {
- return null;
- }
+ output.set(DateWritableV2.dateToDays(date1) -
DateWritableV2.dateToDays(date2));
+ return output;
Review comment:
You are right we can use java APIs Since we already have functions to
convert tiimestamp to date. I am just reusing the existing code instead of
adding new.
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Issue Time Tracking
-------------------
Worklog Id: (was: 617515)
Time Spent: 1h 10m (was: 1h)
> Refactor GenericUDFDateDiff
> ---------------------------
>
> Key: HIVE-25297
> URL: https://issues.apache.org/jira/browse/HIVE-25297
> Project: Hive
> Issue Type: Task
> Components: UDF
> Affects Versions: All Versions
> Reporter: Ashish Sharma
> Assignee: Ashish Sharma
> Priority: Trivial
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> Description
> Remove redundant code and refactor entire GenericUDFDateDiff.class code
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