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Concise examples of using the deduplication DSL.
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/*
 * MIT License
 *
 * Copyright (c) 2019 bakdata GmbH
 *
 * 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 com.bakdata.dedupe.person;

import static com.bakdata.dedupe.similarity.CommonSimilarityMeasures.equality;
import static com.bakdata.dedupe.similarity.CommonSimilarityMeasures.jaroWinkler;
import static com.bakdata.dedupe.similarity.CommonSimilarityMeasures.levenshtein;
import static com.bakdata.dedupe.similarity.CommonSimilarityMeasures.max;
import static com.bakdata.dedupe.similarity.CommonSimilarityMeasures.scaledDifference;
import static com.bakdata.dedupe.similarity.CommonSimilarityMeasures.weightedAverage;
import static com.bakdata.dedupe.similarity.CommonTransformations.beiderMorse;

import com.bakdata.dedupe.classifier.Classifier;
import com.bakdata.dedupe.classifier.RuleBasedClassifier;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import lombok.Value;
import lombok.experimental.Delegate;

@Value
@SuppressWarnings("squid:S109")
public class PersonClassifier implements Classifier {
    public static final DateTimeFormatter ISO_FORMAT = DateTimeFormatter.ISO_LOCAL_DATE;

    @Delegate
    Classifier classifier = RuleBasedClassifier.builder()
            .defaultRule(weightedAverage().of(Person.class)
                    .add(2, Person::getFirstName, max(levenshtein().cutoff(0.5d), jaroWinkler()))
                    .add(2, Person::getLastName,
                            max(equality().of(beiderMorse()), levenshtein().cutoff(0.5d), jaroWinkler()))
                    .add(1, Person::getGender, equality())
                    .add(2, Person::getBirthDate,
                            max(levenshtein().of(ISO_FORMAT::format), scaledDifference(2, ChronoUnit.DAYS)))
                    .build(), 0.9d)
            .build();
}