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.runtime.evaluators.functions.records;
  
  import org.apache.asterix.om.functions.BuiltinFunctions;
  import org.apache.asterix.om.functions.IFunctionDescriptor;
  import org.apache.asterix.om.functions.IFunctionDescriptorFactory;
  import org.apache.asterix.om.functions.IFunctionTypeInferer;
  import org.apache.asterix.om.types.ARecordType;
  import org.apache.asterix.runtime.evaluators.base.AbstractScalarFunctionDynamicDescriptor;
  import org.apache.asterix.runtime.functions.FunctionTypeInferers;
  import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
  import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory;
  
  /**
   * Concatenates multiple records into one. Fails if an argument is not a record.
   */
  public class RecordConcatStrictDescriptor extends AbstractScalarFunctionDynamicDescriptor {
      public static final IFunctionDescriptorFactory FACTORY = new IFunctionDescriptorFactory() {
          @Override
          public IFunctionDescriptor createFunctionDescriptor() {
              return new RecordConcatStrictDescriptor();
          }
  
          @Override
          public IFunctionTypeInferer createFunctionTypeInferer() {
              return new FunctionTypeInferers.RecordConcatTypeInferer();
          }
      };
  
      private static final long serialVersionUID = 2L;
  
      private ARecordType[] argTypes;
      private ARecordType listItemRecordType;
  
      @Override
      public void setImmutableStates(Object... states) {
          argTypes = (ARecordType[]) states[0];
          listItemRecordType = (ARecordType) states[1];
      }
  
      @Override
      public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) {
          return new RecordConcatEvalFactory(args, argTypes, listItemRecordType, true, sourceLoc);
      }
  
      @Override
      public FunctionIdentifier getIdentifier() {
          return BuiltinFunctions.RECORD_CONCAT_STRICT;
      }
  }
  