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.asterix.lang.common.context;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.asterix.common.functions.FunctionSignature;
  import org.apache.asterix.common.metadata.DataverseName;
  
  public class FunctionSignatures {
      private final Map<FunctionSignature, FunctionExpressionMap> functionMap;
  
      public FunctionSignatures() {
          functionMap = new HashMap<>();
      }
  
      public FunctionSignature get(String databaseName, DataverseName dataverseName, String name, int arity) {
          FunctionSignature fid = new FunctionSignature(databaseName, dataverseName, name, arity);
          FunctionExpressionMap possibleFD = functionMap.get(fid);
          if (possibleFD == null) {
              return null;
          } else {
              return possibleFD.get(arity);
          }
      }
  
      public void addAll(FunctionSignatures functionSignatures) {
          functionMap.putAll(functionSignatures.functionMap);
      }
  
      public void put(FunctionSignature fd, boolean varargs) {
          FunctionExpressionMap func = functionMap.get(fd);
          if (func == null) {
              func = new FunctionExpressionMap(varargs);
              functionMap.put(fd, func);
          }
          func.put(fd.getArity(), fd);
      }
  }
  