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 com.datastax.oss.driver.internal.mapper.processor.entity;
  
  import com.datastax.oss.driver.api.mapper.entity.naming.NameConverter;
  import com.datastax.oss.driver.api.mapper.entity.naming.NamingConvention;
  import com.datastax.oss.driver.internal.core.util.Strings;
  import com.datastax.oss.driver.shaded.guava.common.base.CaseFormat;
  
  /**
   * Handles the {@link NamingConvention built-in naming conventions}.
   *
   * <p>Unlike user-provided {@link NameConverter}s, this code is invoked at compile time by the
   * mapper processor (built-in conventions are applied directly in the generated code).
   */
  public class BuiltInNameConversions {
  
    public static String toCassandraName(String javaName, NamingConvention convention) {
      switch (convention) {
        case CASE_INSENSITIVE:
          return javaName;
        case EXACT_CASE:
          return Strings.doubleQuote(javaName);
        case LOWER_CAMEL_CASE:
          // Piggy-back on Guava's CaseFormat. Note that we indicate that the input is upper-camel
          // when in reality it can be lower-camel for a property name, but CaseFormat is lenient and
          // handles that correctly.
          return Strings.doubleQuote(CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, javaName));
        case UPPER_CAMEL_CASE:
          return Strings.doubleQuote(CaseFormat.LOWER_CAMEL.to(CaseFormat.UPPER_CAMEL, javaName));
        case SNAKE_CASE_INSENSITIVE:
          return CaseFormat.LOWER_CAMEL.to(CaseFormat.LOWER_UNDERSCORE, javaName);
        case UPPER_SNAKE_CASE:
          return Strings.doubleQuote(
              CaseFormat.LOWER_CAMEL.to(CaseFormat.UPPER_UNDERSCORE, javaName));
        case UPPER_CASE:
          return Strings.doubleQuote(javaName.toUpperCase());
        default:
          throw new AssertionError("Unsupported convention: " + convention);
      }
    }
  }
  