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 org.apache.calcite.adapter.arrow;
  
  import org.apache.calcite.DataContext;
  import org.apache.calcite.linq4j.tree.Types;
  import org.apache.calcite.util.ImmutableIntList;
  
  import com.google.common.collect.ImmutableMap;
  
  import java.lang.reflect.Method;
  import java.util.List;
  
  /**
   * Built-in methods in the Arrow adapter.
   *
   * @see org.apache.calcite.util.BuiltInMethod
   */
  @SuppressWarnings("ImmutableEnumChecker")
  enum ArrowMethod {
    ARROW_QUERY(ArrowTable.class, "query", DataContext.class,
        ImmutableIntList.class, List.class);
  
    final Method method;
  
    static final ImmutableMap<Method, ArrowMethod> MAP;
  
    static {
      final ImmutableMap.Builder<Method, ArrowMethod> builder =
          ImmutableMap.builder();
      for (ArrowMethod value : ArrowMethod.values()) {
        builder.put(value.method, value);
      }
      MAP = builder.build();
    }
  
    /** Defines a method. */
    ArrowMethod(Class<?> clazz, String methodName, Class<?>... argumentTypes) {
      this.method = Types.lookupMethod(clazz, methodName, argumentTypes);
    }
  }
  