ExpressionTestBase.java

/*
 *   Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 *   Licensed under the Apache License, Version 2.0 (the "License").
 *   You may not use this file except in compliance with the License.
 *   A copy of the License is located at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *   or in the "license" file accompanying this file. This file 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.amazon.opendistroforelasticsearch.sql.expression;

import static com.amazon.opendistroforelasticsearch.sql.config.TestConfig.BOOL_TYPE_MISSING_VALUE_FIELD;
import static com.amazon.opendistroforelasticsearch.sql.config.TestConfig.BOOL_TYPE_NULL_VALUE_FIELD;
import static com.amazon.opendistroforelasticsearch.sql.config.TestConfig.DOUBLE_TYPE_MISSING_VALUE_FIELD;
import static com.amazon.opendistroforelasticsearch.sql.config.TestConfig.DOUBLE_TYPE_NULL_VALUE_FIELD;
import static com.amazon.opendistroforelasticsearch.sql.config.TestConfig.INT_TYPE_MISSING_VALUE_FIELD;
import static com.amazon.opendistroforelasticsearch.sql.config.TestConfig.INT_TYPE_NULL_VALUE_FIELD;
import static com.amazon.opendistroforelasticsearch.sql.config.TestConfig.STRING_TYPE_MISSING_VALUE_FILED;
import static com.amazon.opendistroforelasticsearch.sql.config.TestConfig.STRING_TYPE_NULL_VALUE_FILED;
import static com.amazon.opendistroforelasticsearch.sql.data.model.ExprValueUtils.booleanValue;
import static com.amazon.opendistroforelasticsearch.sql.data.model.ExprValueUtils.collectionValue;
import static com.amazon.opendistroforelasticsearch.sql.data.model.ExprValueUtils.doubleValue;
import static com.amazon.opendistroforelasticsearch.sql.data.model.ExprValueUtils.floatValue;
import static com.amazon.opendistroforelasticsearch.sql.data.model.ExprValueUtils.integerValue;
import static com.amazon.opendistroforelasticsearch.sql.data.model.ExprValueUtils.longValue;
import static com.amazon.opendistroforelasticsearch.sql.data.model.ExprValueUtils.missingValue;
import static com.amazon.opendistroforelasticsearch.sql.data.model.ExprValueUtils.nullValue;
import static com.amazon.opendistroforelasticsearch.sql.data.model.ExprValueUtils.stringValue;
import static com.amazon.opendistroforelasticsearch.sql.data.model.ExprValueUtils.tupleValue;

import com.amazon.opendistroforelasticsearch.sql.config.TestConfig;
import com.amazon.opendistroforelasticsearch.sql.data.model.ExprValue;
import com.amazon.opendistroforelasticsearch.sql.data.type.ExprType;
import com.amazon.opendistroforelasticsearch.sql.expression.config.ExpressionConfig;
import com.amazon.opendistroforelasticsearch.sql.expression.env.Environment;
import com.amazon.opendistroforelasticsearch.sql.expression.function.BuiltinFunctionName;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import java.util.List;
import java.util.function.Function;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit.jupiter.SpringExtension;

@Configuration
@ExtendWith(SpringExtension.class)
@ContextConfiguration(classes = {ExpressionConfig.class, ExpressionTestBase.class,
    TestConfig.class})
public class ExpressionTestBase {
  @Autowired
  protected DSL dsl;

  @Autowired
  protected Environment<Expression, ExprType> typeEnv;

  @Bean
  protected static Environment<Expression, ExprValue> valueEnv() {
    return var -> {
      if (var instanceof ReferenceExpression) {
        switch (((ReferenceExpression) var).getAttr()) {
          case "integer_value":
            return integerValue(1);
          case "long_value":
            return longValue(1L);
          case "float_value":
            return floatValue(1f);
          case "double_value":
            return doubleValue(1d);
          case "boolean_value":
            return booleanValue(true);
          case "string_value":
            return stringValue("str");
          case "struct_value":
            return tupleValue(ImmutableMap.of("str", 1));
          case "array_value":
            return collectionValue(ImmutableList.of(1));
          case BOOL_TYPE_NULL_VALUE_FIELD:
          case INT_TYPE_NULL_VALUE_FIELD:
          case DOUBLE_TYPE_NULL_VALUE_FIELD:
          case STRING_TYPE_NULL_VALUE_FILED:
            return nullValue();
          case INT_TYPE_MISSING_VALUE_FIELD:
          case BOOL_TYPE_MISSING_VALUE_FIELD:
          case DOUBLE_TYPE_MISSING_VALUE_FIELD:
          case STRING_TYPE_MISSING_VALUE_FILED:
            return missingValue();
          default:
            throw new IllegalArgumentException("undefined reference");
        }
      } else {
        throw new IllegalArgumentException("var must be ReferenceExpression");
      }
    };
  }

  @Bean
  protected Environment<Expression, ExprType> typeEnv() {
    return typeEnv;
  }

  protected Function<List<Expression>, FunctionExpression> functionMapping(
      BuiltinFunctionName builtinFunctionName) {
    switch (builtinFunctionName) {
      case ADD:
        return (expressions) -> dsl.add(expressions.get(0), expressions.get(1));
      case SUBTRACT:
        return (expressions) -> dsl.subtract(expressions.get(0), expressions.get(1));
      case MULTIPLY:
        return (expressions) -> dsl.multiply(expressions.get(0), expressions.get(1));
      case DIVIDE:
        return (expressions) -> dsl.divide(expressions.get(0), expressions.get(1));
      case MODULES:
        return (expressions) -> dsl.module(expressions.get(0), expressions.get(1));
      default:
        throw new RuntimeException();
    }
  }
}