Profiles.kt

package org.craftsrecords.talkadvisor.recommendation.spi

import org.craftsrecords.hexarch.Repository
import org.craftsrecords.talkadvisor.recommendation.profile.Profile

@Repository
interface Profiles {
    fun save(profile: Profile): Profile

    fun fetch(userId: String): Profile?
}

Recommendations.kt

package org.craftsrecords.talkadvisor.recommendation.spi

import org.craftsrecords.hexarch.Repository
import org.craftsrecords.talkadvisor.recommendation.Recommendation

@Repository
interface Recommendations {
    fun save(recommendation: Recommendation): Recommendation
}

SearchTalks.kt

package org.craftsrecords.talkadvisor.recommendation.spi

import org.craftsrecords.talkadvisor.recommendation.preferences.Topic
import org.craftsrecords.talkadvisor.recommendation.talk.Talk

@FunctionalInterface
interface SearchTalks {
    val maxNumberOfTalks: Int
    fun forTopics(topics: Set<Topic>): Set<Talk>
}