tech.tablesaw.aggregate.TimeAggregateFunction Maven / Gradle / Ivy
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package tech.tablesaw.aggregate;
import java.time.LocalTime;
import tech.tablesaw.api.ColumnType;
import tech.tablesaw.api.TimeColumn;
/** A partial implementation of aggregate functions to summarize over a time column */
public abstract class TimeAggregateFunction extends AggregateFunction {
/**
* Constructs a TimeAggregateFunction with the given name. The name is used as a column name in
* the output
*/
public TimeAggregateFunction(String name) {
super(name);
}
/** Returns a LocalTime object that is the result of applying this function to the given Column */
public abstract LocalTime summarize(TimeColumn column);
/** {@inheritDoc} */
@Override
public boolean isCompatibleColumn(ColumnType type) {
return type.equals(ColumnType.LOCAL_TIME);
}
/** {@inheritDoc} */
@Override
public ColumnType returnType() {
return ColumnType.LOCAL_TIME;
}
}