Issue #11: Service und Spring Data JPA Repository für Systemeinstellungen

src/main/java/DNPM/config/PluginConfiguration.java

@@ -1,10 +1,12 @@
 package DNPM.config;
 
+import DNPM.database.SettingsRepository;
 import DNPM.services.*;
 import de.itc.onkostar.api.IOnkostarApi;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 
 import javax.sql.DataSource;
 
@@ -15,6 +17,7 @@ import javax.sql.DataSource;
  */
 @Configuration
 @ComponentScan(basePackages = "DNPM.analyzer")
+@EnableJpaRepositories(basePackages = "DNPM.database")
 public class PluginConfiguration {
 
     @Bean
@@ -28,8 +31,17 @@ public class PluginConfiguration {
     }
 
     @Bean
-    public TherapieplanServiceFactory therapieplanServiceFactory(final IOnkostarApi onkostarApi, final FormService formService) {
-        return new TherapieplanServiceFactory(onkostarApi, formService);
+    public SettingsService settingsService(final SettingsRepository settingsRepository) {
+        return new SettingsService(settingsRepository);
+    }
+
+    @Bean
+    public TherapieplanServiceFactory therapieplanServiceFactory(
+            final IOnkostarApi onkostarApi,
+            final SettingsService settingsService,
+            final FormService formService
+    ) {
+        return new TherapieplanServiceFactory(onkostarApi, settingsService, formService);
     }
 
 }

src/main/java/DNPM/database/ReadOnlyRepository.java

@@ -0,0 +1,20 @@
+package DNPM.database;
+
+import org.springframework.data.repository.NoRepositoryBean;
+import org.springframework.data.repository.Repository;
+
+import java.io.Serializable;
+import java.util.List;
+
+/**
+ * Basis-Repository for ReadOnly Spring-Data-JPA Repositories
+ * <p>Entity-Klassen müssen in Package <code>de.itc.db.dnpm</code> liegen
+ * @param <T> Typ des Entities
+ * @param <ID> Typ der ID
+ */
+@NoRepositoryBean
+public interface ReadOnlyRepository<T, ID extends Serializable> extends Repository<T, ID> {
+
+    List<T> findAll();
+
+}

src/main/java/DNPM/database/SettingsRepository.java

@@ -0,0 +1,14 @@
+package DNPM.database;
+
+import de.itc.db.dnpm.Setting;
+import org.springframework.stereotype.Repository;
+
+/**
+ * Spring Data JPA Repository zum Lesen von Einstellungen
+ */
+@Repository("dnpmSettingRepository")
+public interface SettingsRepository extends ReadOnlyRepository<Setting, Long> {
+
+    Setting findByName(String name);
+
+}

src/main/java/DNPM/services/SettingsService.java

@@ -0,0 +1,47 @@
+package DNPM.services;
+
+import DNPM.database.SettingsRepository;
+
+import java.util.Optional;
+
+/**
+ * Implementiert den Dienst zur Ermittlung von Systemeinstellungen
+ */
+public class SettingsService {
+
+    private final SettingsRepository settingsRepository;
+
+    public SettingsService(final SettingsRepository settingsRepository) {
+        this.settingsRepository = settingsRepository;
+    }
+
+    /**
+     * Übergibt ein <code>Optional</code> für die Einstellung mit angegebenen Namen
+     * @param name Name der Einstellung
+     * @return Optional mit Wert der Einstellung oder ein leeres Optional, wenn Einstellung nicht gefunden
+     */
+    public Optional<String> getSetting(String name) {
+        var sid = settingsRepository.findByName(name);
+        if (null == sid) {
+            return Optional.empty();
+        }
+        return Optional.of(sid.getValue());
+    }
+
+    /**
+     * Übergibt die SID als <code>Optional</code>
+     * @return Optional mit Wert der SID
+     */
+    public Optional<String> getSID() {
+        return getSetting("SID");
+    }
+
+    /**
+     * Übergibt die Einstellung für <code>mehrere_mtb_in_mtbepisode</code>
+     * @return Übergibt <code>true</code>, wenn <code>mehrere_mtb_in_mtbepisode</code> auf "Ja" gesetzt ist.
+     */
+    public boolean multipleMtbsInMtbEpisode() {
+        var setting = getSetting("SID");
+        return setting.isPresent() && setting.get().equals("true");
+    }
+}

src/main/java/DNPM/services/TherapieplanServiceFactory.java

@@ -6,18 +6,22 @@ public class TherapieplanServiceFactory {
 
     private final IOnkostarApi onkostarApi;
 
+    private final SettingsService settingsService;
+
     private final FormService formService;
 
-    public TherapieplanServiceFactory(IOnkostarApi onkostarApi, FormService formService) {
+    public TherapieplanServiceFactory(
+            final IOnkostarApi onkostarApi,
+            final SettingsService settingsService,
+            final FormService formService
+    ) {
         this.onkostarApi = onkostarApi;
+        this.settingsService = settingsService;
         this.formService = formService;
     }
 
     public TherapieplanService currentUsableInstance() {
-        if (
-                null != onkostarApi.getGlobalSetting("mehrere_mtb_in_mtbepisode")
-                        && onkostarApi.getGlobalSetting("mehrere_mtb_in_mtbepisode").equals("true")
-        ) {
+        if (settingsService.multipleMtbsInMtbEpisode()) {
             return new MultipleMtbTherapieplanService();
         }
 

src/main/java/de/itc/db/dnpm/Setting.java

@@ -0,0 +1,43 @@
+package de.itc.db.dnpm;
+
+import org.hibernate.annotations.Immutable;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Immutable
+@Table(name = "einstellung")
+public class Setting {
+    @Id
+    private Long id;
+
+    private String name;
+
+    @Column(name = "wert")
+    private String value;
+
+    protected Setting() {
+        // No content
+    }
+
+    public Setting(Long id, String name, String value) {
+        this.id = id;
+        this.name = name;
+        this.value = value;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getValue() {
+        return value;
+    }
+}