/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.syncope.core.persistence.jpa.entity;
  
  import com.fasterxml.jackson.core.type.TypeReference;
  import java.util.HashMap;
  import java.util.Locale;
  import java.util.Map;
  import java.util.Optional;
  import javax.persistence.Cacheable;
  import javax.persistence.Entity;
  import javax.persistence.Inheritance;
  import javax.persistence.InheritanceType;
  import javax.persistence.Lob;
  import javax.persistence.PostLoad;
  import javax.persistence.PostPersist;
  import javax.persistence.PostUpdate;
  import javax.persistence.PrePersist;
  import javax.persistence.PreUpdate;
  import javax.persistence.Table;
  import javax.persistence.Transient;
  import org.apache.syncope.core.persistence.api.entity.Schema;
  import org.apache.syncope.core.persistence.jpa.validation.entity.SchemaKeyCheck;
  import org.apache.syncope.core.provisioning.api.serialization.POJOHelper;
  
  @Entity
  @Inheritance(strategy = InheritanceType.JOINED)
  @Table(name = AbstractSchema.TABLE)
  @Cacheable
  @SchemaKeyCheck
  public abstract class AbstractSchema extends AbstractProvidedKeyEntity implements Schema {
  
      private static final long serialVersionUID = -9222344997225831269L;
  
      public static final String TABLE = "SyncopeSchema";
  
      protected static final TypeReference<HashMap<Locale, String>> LABEL_TYPEREF =
              new TypeReference<HashMap<Locale, String>>() {
      };
  
      @Lob
      private String labels;
  
      @Transient
      private Map<Locale, String> labelMap = new HashMap<>();
  
      @Override
      public Optional<String> getLabel(final Locale locale) {
          return Optional.ofNullable(labelMap.get(locale));
      }
  
      @Override
      public Map<Locale, String> getLabels() {
          return labelMap;
      }
  
      protected void json2map(final boolean clearFirst) {
          if (clearFirst) {
              getLabels().clear();
          }
          if (labels != null) {
              getLabels().putAll(POJOHelper.deserialize(labels, LABEL_TYPEREF));
          }
      }
  
      @PostLoad
      public void postLoad() {
          json2map(false);
      }
  
      @PostPersist
      @PostUpdate
      public void postSave() {
          json2map(true);
      }
  
      @PrePersist
      @PreUpdate
      public void map2json() {
          labels = POJOHelper.serialize(getLabels());
      }
  }