moe.maple.api.script.model.object.data.provider.DataProvider Maven / Gradle / Ivy

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A java MapleStory(🍁) scripting api.

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package moe.maple.api.script.model.object.data.provider;

import moe.maple.api.script.model.object.data.safety.DataValidator;

import java.util.Collection;
import java.util.Optional;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import java.util.stream.Stream;

/**
 * @author umbreon22
 * Created on 8/21/2019.
 */
public interface DataProvider extends DataValidator {

    /**
     * @return A stream of {@link Key}
     */
    Stream keyStream();

    /**
     * @return A stream of {@link Value}
     */
    Stream valueStream();

    /**
     * @param key A {@link Key}
     * @return An {@link Optional} from {@link Key}
     */
    Optional get(Key key);

    /**
     * @param filter A {@link Predicate} filter
     * @return A collection if {@link Value} that passes the predicate test.
     */
    default Collection getAll(Predicate filter) {
        return valueStream().filter(filter).collect(Collectors.toSet());
    }
    /**
     * @return A collection of all {@link Value}
     */
    default Collection getAll() {
        return valueStream().collect(Collectors.toSet());
    }

}