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Project to build type-safe queries

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/**
 * Copyright (c) 2023-2024 by Takahiko Tominaga
 * This software is licensed under the MIT License (MIT).
 * For more information see LICENSE or https://opensource.org/licenses/MIT
 */

package ldbc.query.builder

import scala.annotation.targetName

import ldbc.dsl.*
import ldbc.dsl.codec.Decoder

package object statement:

  /**
   * Trait represents a command in MySQL.
   */
  trait Command extends SQL
  object Command:
    case class Pure(statement: String, params: List[Parameter.Dynamic]) extends Command:
      @targetName("combine")
      override def ++(sql: SQL): SQL = this.copy(statement = statement ++ sql.statement, params = params ++ sql.params)

  /**
   * Trait represents a read-only query in MySQL.
   * 
   * @tparam T
   *   Scala types to be converted by Decoder
   */
  trait Query[T] extends SQL:

    /** Function to get a value of type T from a ResultSet */
    def decoder: Decoder[T]