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
   *
   *     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 network.aika.type;
  
  import network.aika.fields.defs.FieldDefinition;
  import network.aika.fields.field.Field;
  import network.aika.queue.Queue;
  import network.aika.type.relations.Relation;
  
  import java.util.stream.Stream;
  
  /**
   *
   * @author Lukas Molzberger
   */
  public interface Obj {
  
      void initFields();
  
      Type getType();
  
      Stream<? extends Obj> followManyRelation(Relation rel);
  
      Obj followSingleRelation(Relation rel);
  
      Field getOrCreateFieldInput(FieldDefinition fd);
  
      Field getFieldOutput(FieldDefinition fd);
  
      Stream<Field> getFields();
  
      Obj setFieldValue(FieldDefinition fd, double v);
  
      double getFieldValue(FieldDefinition fd);
  
      double getFieldUpdatedValue(FieldDefinition fd);
  
      Queue getQueue();
  
      String toKeyString();
  
      boolean isInstanceOf(Type objectType);
  }
  