Example usage for java.util Vector.Builder addAll

Introduction

In this page you can find the example usage for java.util Vector.Builder addAll.

Prototype

public boolean addAll(Collection<? extends E> c) 

Source Link

Document

Appends all of the elements in the specified Collection to the end of this Vector, in the order that they are returned by the specified Collection's Iterator.

Usage

From source file:org.briljantframework.data.Collectors.java

/**
 * Performs a transformation operation, mapping each element to a new value, adding it to the
 * {@code Vector.Builder} finishing it constructs a new {@code Vector}.
 *
 * @param supplier supply the vector builder
 * @param function the mapper/*from   w  w w  .ja va2s. c  o  m*/
 * @param <T> the input type
 * @param <O> the output type
 * @return a transformation aggregator
 */
public static <T, O> Collector<T, ?, Vector> map(Supplier<Vector.Builder> supplier,
        Function<? super T, ? extends O> function) {
    return Collector.of(supplier, (acc, v) -> acc.add(function.apply(v)),
            (Vector.Builder left, Vector.Builder right) -> {
                left.addAll(right);
                return left;
            }, Vector.Builder::build);
}

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From source file:org.briljantframework.data.Collectors.java

/**
 * Returns an aggregator that filter values.
 *
 * @param supplier the vector builder//  ww  w  .jav a  2s . c  o m
 * @param predicate the predicate. If {@code true} include value.
 * @param <T> the input type
 * @return a filtering aggregator
 */
public static <T> Collector<T, ?, Vector> filter(Supplier<Vector.Builder> supplier, Predicate<T> predicate) {
    return Collector.of(supplier, (acc, v) -> {
        if (predicate.test(v)) {
            acc.add(v);
        }
    }, (Vector.Builder left, Vector.Builder right) -> {
        left.addAll(right);
        return left;
    }, Vector.Builder::build);
}

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From source file:org.briljantframework.data.Collectors.java

/**
 * @param copies the number of copies of each element
 * @return an aggregator that repeats each value {@code copies} times.
 *///from  w ww .  ja va 2 s.c  om
public static <T> Collector<T, ?, Vector> each(Supplier<Vector.Builder> vb, int copies) {
    return Collector.of(vb, (acc, v) -> {
        for (int i = 0; i < copies; i++) {
            acc.add(v);
        }
    }, (Vector.Builder left, Vector.Builder right) -> {
        left.addAll(right);
        return left;
    }, Vector.Builder::build);
}

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From source file:org.briljantframework.data.Collectors.java

public static <T> Collector<T, ?, Vector> repeat(Supplier<Vector.Builder> vb, int copies) {
    return Collector.of(vb, Vector.Builder::add, (Vector.Builder left, Vector.Builder right) -> {
        left.addAll(right);
        return left;
    }, (v) -> {/*from w w w .  j ava2 s  .  c om*/
        Vector temp = v.getView();
        int size = temp.size();
        for (int i = 1; i < copies; i++) {
            for (int j = 0; j < size; j++) {
                v.add(temp, j);
            }
        }
        return v.build();
    });
}

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From source file:org.briljantframework.data.vector.Vector.java

/**
 * Construct a vector of values. The type of vector is inferred from the values.
 *
 * @param array the values//from  w w  w  .  j  ava2 s.  c  om
 * @return a new vector
 */
@SafeVarargs
static <T> Vector of(T... array) {
    Vector.Builder builder = Vector.Builder.of(array.getClass().getComponentType());
    builder.addAll(array);
    return builder.build();
}

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