Added repositories

module-server/src/main/java/de/twomartens/wahlrecht/repository/CandidateRepository.java

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+package de.twomartens.wahlrecht.repository;
+
+import de.twomartens.wahlrecht.model.db.Candidate;
+import java.util.Optional;
+import org.springframework.data.mongodb.repository.MongoRepository;
+
+public interface CandidateRepository extends MongoRepository<Candidate, String> {
+
+  Optional<Candidate> findByName(String name);
+}

module-server/src/main/java/de/twomartens/wahlrecht/repository/ConstituencyRepository.java

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+package de.twomartens.wahlrecht.repository;
+
+import de.twomartens.wahlrecht.model.db.Constituency;
+import java.util.Collection;
+import java.util.Optional;
+import org.springframework.data.mongodb.repository.MongoRepository;
+
+public interface ConstituencyRepository extends MongoRepository<Constituency, String> {
+
+  Optional<Constituency> findByElectionNameAndNumber(String electionName, int number);
+
+  Collection<Constituency> findByElectionName(String electionName);
+}

module-server/src/main/java/de/twomartens/wahlrecht/repository/ElectionRepository.java

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+package de.twomartens.wahlrecht.repository;
+
+import de.twomartens.wahlrecht.model.db.Election;
+import java.util.Optional;
+import org.springframework.data.mongodb.repository.MongoRepository;
+
+public interface ElectionRepository extends MongoRepository<Election, String> {
+
+  Optional<Election> findByName(String name);
+}

module-server/src/main/java/de/twomartens/wahlrecht/repository/NominationRepository.java

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+package de.twomartens.wahlrecht.repository;
+
+import de.twomartens.wahlrecht.model.db.Nomination;
+import java.util.Optional;
+import org.springframework.data.mongodb.repository.MongoRepository;
+
+public interface NominationRepository extends MongoRepository<Nomination, String> {
+
+  Optional<Nomination> findByNameAndElectionNameAndPartyAbbreviation(String name,
+      String electionName, String partyAbbreviation);
+}

module-server/src/main/java/de/twomartens/wahlrecht/repository/PartyRepository.java

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+package de.twomartens.wahlrecht.repository;
+
+import de.twomartens.wahlrecht.model.db.PartyInElection;
+import java.util.Collection;
+import java.util.Optional;
+import org.springframework.data.mongodb.repository.MongoRepository;
+
+public interface PartyRepository extends MongoRepository<PartyInElection, String> {
+
+  Optional<PartyInElection> findByAbbreviationAndElectionName(String abbreviation,
+      String electionName);
+
+  Collection<PartyInElection> findByElectionName(String name);
+}