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A Java persistence layer based on JOOQ for high performance and business flow support.

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package com.kenshoo.pl.entity.spi;

import com.kenshoo.pl.entity.*;

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

/**
 * This interface is implemented by pluggable components that require the current state of entities. For instance, a validator
 * that needs a profile ID of an currentState, would indirectly implement this interface.
 * Client classes should not implement this interface directly, it is used internally by the framework.
 */
public interface CurrentStateConsumer> {

    default SupportedChangeOperation getSupportedChangeOperation() {
        return SupportedChangeOperation.CREATE_UPDATE_AND_DELETE;
    }

    default Stream> requiredFields(Collection> fieldsToUpdate, ChangeOperation changeOperation) {
        return Stream.empty();
    }


    static > Predicate> supporting(ChangeOperation op) {
        return consumer -> consumer.getSupportedChangeOperation().supports(op);
    }

    static > Predicate supporting(CurrentStateConsumer consumer) {
        return op -> consumer.getSupportedChangeOperation().supports(op);
    }
}