content: /**
   * 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.atlas.v1.model.typedef;
  
  import com.fasterxml.jackson.annotation.JsonAutoDetect;
  import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
  import com.fasterxml.jackson.annotation.JsonInclude;
  import com.fasterxml.jackson.core.JsonGenerator;
  import com.fasterxml.jackson.core.JsonParser;
  import com.fasterxml.jackson.databind.DeserializationContext;
  import com.fasterxml.jackson.databind.JsonDeserializer;
  import com.fasterxml.jackson.databind.JsonSerializer;
  import com.fasterxml.jackson.databind.SerializerProvider;
  import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
  import com.fasterxml.jackson.databind.annotation.JsonSerialize;
  
  import javax.xml.bind.annotation.XmlAccessType;
  import javax.xml.bind.annotation.XmlAccessorType;
  import javax.xml.bind.annotation.XmlRootElement;
  
  import java.io.IOException;
  import java.io.Serializable;
  import java.util.Objects;
  
  import static com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility.NONE;
  import static com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility.PUBLIC_ONLY;
  
  @JsonAutoDetect(getterVisibility = PUBLIC_ONLY, setterVisibility = PUBLIC_ONLY, fieldVisibility = NONE)
  @JsonSerialize(using = Multiplicity.MultiplicitySerializer.class)
  @JsonInclude(JsonInclude.Include.NON_NULL)
  @JsonDeserialize(using = Multiplicity.MultiplicityDeserializer.class)
  @JsonIgnoreProperties(ignoreUnknown = true)
  @XmlRootElement
  @XmlAccessorType(XmlAccessType.PROPERTY)
  public class Multiplicity implements Serializable {
      public static final Multiplicity OPTIONAL   = new Multiplicity(0, 1, false);
      public static final Multiplicity REQUIRED   = new Multiplicity(1, 1, false);
      public static final Multiplicity COLLECTION = new Multiplicity(1, Integer.MAX_VALUE, false);
      public static final Multiplicity SET        = new Multiplicity(1, Integer.MAX_VALUE, true);
      private static final long serialVersionUID = 1L;
      private int     lower;
      private int     upper;
      private boolean isUnique;
  
      public Multiplicity() {
          this(Multiplicity.REQUIRED);
      }
  
      public Multiplicity(Multiplicity copyFrom) {
          this(copyFrom.lower, copyFrom.upper, copyFrom.isUnique);
      }
  
      public Multiplicity(int lower, int upper, boolean isUnique) {
          this.lower    = lower;
          this.upper    = upper;
          this.isUnique = isUnique;
      }
  
      public int getLower() {
          return lower;
      }
  
      public void setLower(int lower) {
          this.lower = lower;
      }
  
      public int getUpper() {
          return upper;
      }
  
      public void setUpper(int upper) {
          this.upper = upper;
      }
  
      public boolean getIsUnique() {
          return isUnique;
      }
  
      public void setIsUnique(boolean isUnique) {
          this.isUnique = isUnique;
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(lower, upper, isUnique);
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
  
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
  
          Multiplicity that = (Multiplicity) o;
  
          return lower == that.lower &&
                  upper == that.upper &&
                  isUnique == that.isUnique;
      }
  
      static class MultiplicitySerializer extends JsonSerializer<Multiplicity> {
          @Override
          public void serialize(Multiplicity value, JsonGenerator jgen, SerializerProvider provider) throws IOException {
              if (value != null) {
                  final String serializedValue;
  
                  if (value.getLower() < 1) {
                      serializedValue = "optional";
                  } else if (value.equals(Multiplicity.COLLECTION)) {
                      serializedValue = "collection";
                  } else if (value.equals(Multiplicity.SET)) {
                      serializedValue = "set";
                  } else if (value.equals(Multiplicity.REQUIRED)) {
                      serializedValue = "required";
                  } else { // default value
                      serializedValue = "required";
                  }
  
                  jgen.writeString(serializedValue);
              }
          }
      }
  
      static class MultiplicityDeserializer extends JsonDeserializer<Multiplicity> {
          @Override
          public Multiplicity deserialize(JsonParser parser, DeserializationContext context) throws IOException {
              Multiplicity ret = null;
  
              String value = parser.readValueAs(String.class);
  
              if (value != null) {
                  if (value.equals("required")) {
                      ret = new Multiplicity(Multiplicity.REQUIRED);
                  } else if (value.equals("optional")) {
                      ret = new Multiplicity(Multiplicity.OPTIONAL);
                  } else if (value.equals("collection")) {
                      ret = new Multiplicity(Multiplicity.COLLECTION);
                  } else if (value.equals("set")) {
                      ret = new Multiplicity(Multiplicity.SET);
                  }
              }
  
              if (ret == null) {
                  ret = new Multiplicity();
              }
  
              return ret;
          }
      }
  }
  