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 com.datastax.dse.driver.internal.core.graph;
  
  import com.datastax.dse.driver.api.core.graph.GraphNode;
  import com.datastax.oss.driver.api.core.type.reflect.GenericType;
  import com.datastax.oss.driver.shaded.guava.common.base.Objects;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  import net.jcip.annotations.Immutable;
  import org.apache.tinkerpop.gremlin.process.traversal.Path;
  import org.apache.tinkerpop.gremlin.structure.Edge;
  import org.apache.tinkerpop.gremlin.structure.Property;
  import org.apache.tinkerpop.gremlin.structure.Vertex;
  import org.apache.tinkerpop.gremlin.structure.VertexProperty;
  
  /**
   * Modern implementation for GraphSON 2+ results.
   *
   * <p>The server returns results with type information. The driver works with the decoded objects
   * directly.
   */
  @Immutable
  public class ObjectGraphNode implements GraphNode {
  
    private final Object delegate;
  
    public ObjectGraphNode(Object delegate) {
      this.delegate = delegate;
    }
  
    @Override
    public boolean isNull() {
      return delegate == null;
    }
  
    @Override
    public boolean isMap() {
      return delegate instanceof Map;
    }
  
    @Override
    public Iterable<?> keys() {
      return ((Map<?, ?>) delegate).keySet();
    }
  
    @Override
    public GraphNode getByKey(Object key) {
      if (!isMap()) {
        return null;
      }
      Map<?, Object> map = asMap();
      if (map.containsKey(key)) {
        return new ObjectGraphNode(map.get(key));
      }
      return null;
    }
  
    @Override
    @SuppressWarnings("unchecked")
    public <K, V> Map<K, V> asMap() {
      return (Map<K, V>) delegate;
    }
  
    @Override
    public boolean isList() {
      return delegate instanceof List;
    }
  
    @Override
    public int size() {
      if (isList()) {
        return asList().size();
      } else if (isMap()) {
        return asMap().size();
      } else if (isSet()) {
        return asSet().size();
      } else {
        return 0;
      }
    }
  
    @Override
    public GraphNode getByIndex(int index) {
      if (!isList() || index < 0 || index >= size()) {
        return null;
      }
      return new ObjectGraphNode(asList().get(index));
    }
  
    @Override
    @SuppressWarnings("unchecked")
    public <T> List<T> asList() {
      return (List<T>) delegate;
    }
  
    @Override
    public boolean isValue() {
      return !(isList()
          || isMap()
          || isSet()
          || isVertex()
          || isEdge()
          || isPath()
          || isProperty()
          || isVertexProperty());
    }
  
    @Override
    public boolean isVertexProperty() {
      return delegate instanceof VertexProperty;
    }
  
    @Override
    public boolean isProperty() {
      return delegate instanceof Property;
    }
  
    @Override
    public boolean isPath() {
      return delegate instanceof Path;
    }
  
    @Override
    public int asInt() {
      return (Integer) delegate;
    }
  
    @Override
    public boolean asBoolean() {
      return (Boolean) delegate;
    }
  
    @Override
    public long asLong() {
      return (Long) delegate;
    }
  
    @Override
    public double asDouble() {
      return (Double) delegate;
    }
  
    @Override
    public String asString() {
      return (String) delegate;
    }
  
    @Override
    @SuppressWarnings("unchecked")
    public <T> T as(Class<T> clazz) {
      return (T) delegate;
    }
  
    @Override
    @SuppressWarnings("unchecked")
    public <T> T as(GenericType<T> type) {
      return (T) delegate;
    }
  
    @Override
    public boolean isVertex() {
      return delegate instanceof Vertex;
    }
  
    @Override
    public Vertex asVertex() {
      return (Vertex) delegate;
    }
  
    @Override
    public boolean isEdge() {
      return delegate instanceof Edge;
    }
  
    @Override
    public Edge asEdge() {
      return (Edge) delegate;
    }
  
    @Override
    public Path asPath() {
      return (Path) delegate;
    }
  
    @Override
    @SuppressWarnings("unchecked")
    public <T> Property<T> asProperty() {
      return (Property<T>) delegate;
    }
  
    @Override
    @SuppressWarnings("unchecked")
    public <T> VertexProperty<T> asVertexProperty() {
      return (VertexProperty<T>) delegate;
    }
  
    @Override
    public boolean isSet() {
      return delegate instanceof Set;
    }
  
    @Override
    @SuppressWarnings("unchecked")
    public <T> Set<T> asSet() {
      return (Set<T>) delegate;
    }
  
    @Override
    public String toString() {
      return this.delegate.toString();
    }
  
    @Override
    public boolean equals(Object other) {
      if (this == other) {
        return true;
      }
      // Compare each others' delegates.
      return other instanceof ObjectGraphNode
          && Objects.equal(this.delegate, ((ObjectGraphNode) other).delegate);
    }
  
    @Override
    public int hashCode() {
      return Objects.hashCode(delegate);
    }
  }
  