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.querybuilder.QueryBuilder;
  import com.datastax.oss.driver.api.querybuilder.select.Select;
  import com.datastax.oss.driver.api.querybuilder.select.SelectFrom;
  import com.datastax.oss.driver.internal.mapper.processor.MethodGenerator;
  import com.squareup.javapoet.MethodSpec;
  import java.util.Optional;
  import javax.lang.model.element.Modifier;
  
  public class EntityHelperSelectStartMethodGenerator implements MethodGenerator {
  
    private final EntityDefinition entityDefinition;
  
    public EntityHelperSelectStartMethodGenerator(EntityDefinition entityDefinition) {
      this.entityDefinition = entityDefinition;
    }
  
    @Override
    public Optional<MethodSpec> generate() {
      MethodSpec.Builder selectStartBuilder =
          MethodSpec.methodBuilder("selectStart")
              .addAnnotation(Override.class)
              .addModifiers(Modifier.PUBLIC)
              .returns(Select.class)
              .addStatement("throwIfKeyspaceMissing()")
              .addStatement(
                  "$1T selectFrom = (keyspaceId == null)\n"
                      + "? $2T.selectFrom(tableId)\n"
                      + ": $2T.selectFrom(keyspaceId, tableId)",
                  SelectFrom.class,
                  QueryBuilder.class)
              .addCode("$[return selectFrom");
  
      for (PropertyDefinition property : entityDefinition.getAllColumns()) {
        selectStartBuilder.addCode("\n.column($L)", property.getSelector());
      }
      for (PropertyDefinition property : entityDefinition.getComputedValues()) {
        selectStartBuilder.addCode(
            "\n.raw($L).as($L)", property.getSelector(), property.getCqlName());
      }
      selectStartBuilder.addCode("$];\n");
      return Optional.of(selectStartBuilder.build());
    }
  }
  