====== Gradle 에서 Native SQL Code Generation ======
  * [[java:querydsl|QueryDSL]]
  * [[gradle:jpa_metamodel_generation|Gradle에서 JPA 2 MetaModel 생성]]
  * [[https://github.com/querydsl/querydsl/blob/master/querydsl-sql-codegen/src/main/java/com/querydsl/sql/codegen/MetaDataExporter.java|MetaDataExporer.java]] 에서 속성 값 확인
  * [[https://github.com/querydsl/querydsl/blob/master/querydsl-sql-codegen/src/main/java/com/querydsl/sql/codegen/ant/AntMetaDataExporter.java|AntMetaDataExporter.java]] 에서 ant 속성값 확인

====== ANT 사용 ======
<code groovy>
dependencies {
    compile "com.querydsl:querydsl-sql:${queryDslVersion}"
}

configurations {
    queryDslNativeSql
}

dependencies {
    queryDslNativeSql "com.querydsl:querydsl-sql-codegen:4.1.4"
    queryDslNativeSql "com.microsoft.sqlserver:mssql-jdbc"
}

task generateQueryDslNative << {
    file('src/main/generated-querydslnative').deleteDir()
    file('src/main/generated-querydslnative').mkdirs()

    ant.taskdef(name: 'generateQueryDslNative', classname: 'com.querydsl.sql.codegen.ant.AntMetaDataExporter', classpath: configurations.queryDslNativeSql.asPath)
    ant.generateQueryDslNative(
            jdbcDriver: '-JDBC-Driver-',
            jdbcUrl: '-JDBC-URL-',
            jdbcUser: 'username',
            jdbcPassword: "password",
            namePrefix: 'QS',
            packageName: 'test',
            schemaPattern: 'dbo', // SQLServer 등에서 필요
            tableNamePattern: 'table1|table2', // 특정 테이블만 생성
            targetFolder: 'src/main/generated-querydslnative'
    )
}

sourceSets {
    main {
        java {
             srcDirs += 'src/main/generated-querydslnative'

        }
    }
}

idea {
    module {
         generatedSourceDirs += file('src/main/generated-querydslnative') // just hint
    }
}
</code>

===== 코드 직접 호출 : 비권장 =====

먼저 [[http://technicles.com/create-oracle-database-jdbc-connection-in-gradle/|Create Oracle database JDBC connection in gradle]] 를 통해 JDBC Driver를 build script 에서 로딩해야한다.

<code groovy>
import java.sql.Connection
import java.sql.DriverManager
import com.mysema.query.sql.codegen.MetaDataExporter

buildscript {
    dependencies {
        classpath 'com.mysema.querydsl:querydsl-sql-codegen:{version}'
    }
}

configurations {
    querydslSqlJdbcDriver
}

dependencies {
    querydslSqlJdbcDriver "mysql:mysql-connector-java:${mysqlJdbcDriverVersion}"
    compile "com.mysema.querydsl:querydsl-sql:{version}"
}

task generateQueryDslSql {
    // 별도 configuration 에서 JDBC Driver loading 할 것
    File mysql = configurations.querydslSqlJdbcDriver.find { it.toString().contains("mysql-connector-java") }
    URLClassLoader loader = GroovyObject.class.classLoader
    loader.addURL(mysql.toURI().toURL())

    DriverManager.registerDriver(loader.loadClass('com.mysql.jdbc.Driver').newInstance())
    Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF8", "user", "password")

    MetaDataExporter exporter = new MetaDataExporter()
    exporter.namePrefix = 'S'
    exporter.packageName = 'package.to.querydslsql'
    exporter.targetFolder = file('src/generated/java-querydsl')
    
    // 기타 설정들
    
    exporter.export(connection.getMetaData())

    connection.close()
}
</code>