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Minimal Perfect Hash Tables

There is a newer version: 1.0.5

package com.indeed.mph;

/**
 * @author alexs
 */
public class EqualKeyValidator implements KeyValidator {
    private static final long serialVersionUID = 770186872;

    public V validate(final K inputKey, final K extractedKey, final V extractedValue) {
        // allow null for implicit keys
        return extractedKey == null || inputKey.equals(extractedKey) ? extractedValue : null;
    }
}