tanmesh commented on code in PR #9184:
URL: https://github.com/apache/pinot/pull/9184#discussion_r951960280
##########
pinot-core/src/main/java/org/apache/pinot/core/operator/transform/function/ExtractTransformFunction.java:
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@@ -0,0 +1,91 @@
+package org.apache.pinot.core.operator.transform.function;
+
+import java.util.List;
+import java.util.Map;
+import org.apache.pinot.core.operator.blocks.ProjectionBlock;
+import org.apache.pinot.core.operator.transform.TransformResultMetadata;
+import org.apache.pinot.segment.spi.datasource.DataSource;
+import org.apache.pinot.spi.data.FieldSpec;
+import org.joda.time.Chronology;
+import org.joda.time.DateTimeField;
+import org.joda.time.chrono.ISOChronology;
+
+
+public class ExtractTransformFunction extends BaseTransformFunction {
+ public static final String _name = "extract";
+ private TransformResultMetadata _resultMetadata;
+ private TransformFunction _mainTranformFunction;
+ private String[] _stringOutputTimes;
+ protected String _field;
+ protected Chronology _chronology = ISOChronology.getInstanceUTC();
+
+ private static final TransformResultMetadata METADATA =
+ new TransformResultMetadata(FieldSpec.DataType.INT, true, false);
+
+ @Override
+ public String getName() { return _name; }
+
+ @Override
+ public void init(List<TransformFunction> arguments, Map<String, DataSource>
dataSourceMap) {
+ if (arguments.size() != 2) {
+ throw new IllegalArgumentException("Exactly 2 arguments are required for
EXTRACT transform function");
+ }
+
+ _field = ((LiteralTransformFunction) arguments.get(0)).getLiteral();
Review Comment:
Thanks for the suggestion! I have added the change in the latest commit.
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