com.redis.spring.batch.common.ToSampleFunction Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of spring-batch-redis Show documentation

Spring Batch Redis

The newest version!

package com.redis.spring.batch.common;

import java.util.function.Function;
import java.util.function.ToDoubleFunction;
import java.util.function.ToLongFunction;

import com.redis.lettucemod.timeseries.Sample;

public class ToSampleFunction implements Function {

    private final ToLongFunction timestampConverter;

    private final ToDoubleFunction valueConverter;

    public ToSampleFunction(ToLongFunction timestamp, ToDoubleFunction value) {
        this.timestampConverter = timestamp;
        this.valueConverter = value;
    }

    @Override
    public Sample apply(T source) {
        double value = this.valueConverter.applyAsDouble(source);
        long timestamp = this.timestampConverter.applyAsLong(source);
        return Sample.of(timestamp, value);
    }

}