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.internal.mapper.processor.MethodGenerator;
  import com.squareup.javapoet.MethodSpec;
  import com.squareup.javapoet.TypeName;
  import java.util.Optional;
  import javax.lang.model.element.Modifier;
  
  public class EntityHelperSelectByPrimaryKeyPartsMethodGenerator implements MethodGenerator {
  
    @Override
    public Optional<MethodSpec> generate() {
      MethodSpec.Builder selectByPrimaryKeyPartsBuilder =
          MethodSpec.methodBuilder("selectByPrimaryKeyParts")
              .addModifiers(Modifier.PUBLIC)
              .addParameter(TypeName.INT, "parameterCount")
              .returns(Select.class);
  
      selectByPrimaryKeyPartsBuilder.addStatement("$1T select = selectStart()", Select.class);
      selectByPrimaryKeyPartsBuilder.beginControlFlow(
          "for (int i = 0; i < parameterCount && i < " + "primaryKeys.size(); i++)");
      selectByPrimaryKeyPartsBuilder.addStatement(
          "$1T columnName = primaryKeys.get(i)", String.class);
      selectByPrimaryKeyPartsBuilder.addStatement(
          "select = select.whereColumn(columnName).isEqualTo($1T.bindMarker(columnName))",
          QueryBuilder.class);
      selectByPrimaryKeyPartsBuilder.endControlFlow();
      selectByPrimaryKeyPartsBuilder.addStatement("return select");
  
      return Optional.of(selectByPrimaryKeyPartsBuilder.build());
    }
  }
  