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The module for FunctionalJ Core.
// ============================================================================
// Copyright (c) 2017-2021 Nawapunth Manusitthipol (NawaMan - http://nawaman.net).
// ----------------------------------------------------------------------------
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// ============================================================================
package functionalj.stream;
import static functionalj.stream.collect.Collected.collectedOf;
import java.util.function.BiConsumer;
import java.util.function.BinaryOperator;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
import functionalj.function.aggregator.Aggregation;
import functionalj.tuple.Tuple;
import functionalj.tuple.Tuple2;
import functionalj.tuple.Tuple3;
import functionalj.tuple.Tuple4;
import functionalj.tuple.Tuple5;
import functionalj.tuple.Tuple6;
import lombok.val;
public interface AsStreamPlusWithCalculate {
/** @return the stream plus instance of this object. */
public StreamPlus streamPlus();
public void forEach(Consumer action);
// TODO - Optimize this so the concurrent one can has benefit from the Java implementation
// Still not sure how to do that properly.
/** Perform the calculation using the data of this stream */
@SuppressWarnings({"rawtypes", "unchecked"})
public default RESULT calculate(Aggregation aggregation) {
val collector = aggregation.collectorPlus();
Supplier supplier = collector.supplier();
BiConsumer accumulator = collector.accumulator();
BinaryOperator combiner = collector.combiner();
Function finisher = collector.finisher();
val streamPlus = streamPlus();
val accumulated = streamPlus.stream().collect(supplier, accumulator, (a, b) -> combiner.apply(a, b));
val value = finisher.apply(accumulated);
return (RESULT)value;
}
/** Perform the calculation using the data of this stream */
public default
Tuple2
calculate(
Aggregation collector1,
Aggregation collector2) {
val collected1 = collectedOf(collector1);
val collected2 = collectedOf(collector2);
forEach(each -> {
collected1.accumulate(each);
collected2.accumulate(each);
});
return Tuple.of(
collected1.finish(),
collected2.finish()
);
}
/** Perform the calculation using the data of this stream */
public default
Tuple3
calculate(
Aggregation collector1,
Aggregation collector2,
Aggregation collector3) {
val collected1 = collectedOf(collector1);
val collected2 = collectedOf(collector2);
val collected3 = collectedOf(collector3);
forEach(each -> {
collected1.accumulate(each);
collected2.accumulate(each);
collected3.accumulate(each);
});
return Tuple.of(
collected1.finish(),
collected2.finish(),
collected3.finish()
);
}
/** Perform the calculation using the data of this stream */
public default
Tuple4
calculate(
Aggregation collector1,
Aggregation collector2,
Aggregation collector3,
Aggregation collector4) {
val collected1 = collectedOf(collector1);
val collected2 = collectedOf(collector2);
val collected3 = collectedOf(collector3);
val collected4 = collectedOf(collector4);
forEach(each -> {
collected1.accumulate(each);
collected2.accumulate(each);
collected3.accumulate(each);
collected4.accumulate(each);
});
return Tuple.of(
collected1.finish(),
collected2.finish(),
collected3.finish(),
collected4.finish()
);
}
/** Perform the calculation using the data of this stream */
public default
Tuple5
calculate(
Aggregation collector1,
Aggregation collector2,
Aggregation collector3,
Aggregation collector4,
Aggregation collector5) {
val collected1 = collectedOf(collector1);
val collected2 = collectedOf(collector2);
val collected3 = collectedOf(collector3);
val collected4 = collectedOf(collector4);
val collected5 = collectedOf(collector5);
forEach(each -> {
collected1.accumulate(each);
collected2.accumulate(each);
collected3.accumulate(each);
collected4.accumulate(each);
collected5.accumulate(each);
});
return Tuple.of(
collected1.finish(),
collected2.finish(),
collected3.finish(),
collected4.finish(),
collected5.finish()
);
}
/** Perform the calculation using the data of this stream */
public default
Tuple6
calculate(
Aggregation collector1,
Aggregation collector2,
Aggregation collector3,
Aggregation collector4,
Aggregation collector5,
Aggregation collector6) {
val collected1 = collectedOf(collector1);
val collected2 = collectedOf(collector2);
val collected3 = collectedOf(collector3);
val collected4 = collectedOf(collector4);
val collected5 = collectedOf(collector5);
val collected6 = collectedOf(collector6);
forEach(each -> {
collected1.accumulate(each);
collected2.accumulate(each);
collected3.accumulate(each);
collected4.accumulate(each);
collected5.accumulate(each);
collected6.accumulate(each);
});
return Tuple.of(
collected1.finish(),
collected2.finish(),
collected3.finish(),
collected4.finish(),
collected5.finish(),
collected6.finish()
);
}
}