ValueCount.java

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package org.egothor.stemmer;

import java.util.Objects;

/**
 * Immutable value-count pair returned by read-only trie queries.
 *
 * @param <V>   value type
 * @param value stored value
 * @param count occurrence count associated with the value
 */
public record ValueCount<V>(V value, int count) {

    /**
     * Creates a new value-count pair.
     *
     * @param value stored value
     * @param count occurrence count
     * @throws NullPointerException     if {@code value} is {@code null}
     * @throws IllegalArgumentException if {@code count} is negative
     */
    public ValueCount {
        Objects.requireNonNull(value, "value");
        if (count < 0) {
            throw new IllegalArgumentException("count must not be negative.");
        }
    }
}