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.external.library;
  
  import java.nio.file.Files;
  import java.nio.file.Paths;
  import java.util.ArrayList;
  import java.util.Map;
  
  import org.apache.asterix.external.api.IExternalScalarFunction;
  import org.apache.asterix.external.api.IFunctionHelper;
  import org.apache.asterix.external.library.java.base.JBoolean;
  import org.apache.asterix.external.library.java.base.JString;
  
  public class WordInListFunction implements IExternalScalarFunction {
  
      private ArrayList<String> keywordsList;
      private String dictPath;
      private Map<String, String> functionParameters;
  
      @Override
      public void evaluate(IFunctionHelper functionHelper) throws Exception {
          JString input = (JString) functionHelper.getArgument(0);
          JBoolean output = (JBoolean) functionHelper.getResultObject();
          String fieldValue = input.getValue();
          boolean contains = keywordsList.contains(fieldValue);
          output.setValue(contains);
          functionHelper.setResult(output);
      }
  
      @Override
      public void initialize(IFunctionHelper functionHelper) throws Exception {
          keywordsList = new ArrayList<>();
          functionParameters = functionHelper.getParameters();
          dictPath = functionParameters.get("dictPath");
          Files.lines(Paths.get(dictPath)).forEach(keyword -> keywordsList.add(keyword));
      }
  
      @Override
      public void deinitialize() {
          // no op
      }
  }
  