mapstruct-plus/docs/en/guide/configuration.md

title, order, category, description

title	order	category	description
configuration	6	Guide	MapStructPlus MapStructPlus配置项 configuration

MapStructPlus provides multiple configuration items to specify some behavior when the conversion interface is generated.

How to use it

In the module that needs to be configured, create a new configuration class an annotate it with @MapperConfig annotation.

In a module, there can noly be one class with this annotation.

Also, note that the configuration classes must be placed in the module to be effective.

eg：

@MapperConfig(adapterClassName = "DemoConvertMapperAdapter",
    adapterPackage = "io.github.linpeilie.adapter",
    mapAdapterClassName = "DemoMapConvertMapperAdapter")
public class MapStructPlusConfiguration {
}

In addition, the configuration property supports adding compilation parameters to the compiler in the form of -Akey=value.

For example, when using Maven, you can use the compilerArgs property in the maven-compiler-plugin plugin configuration to configure delivery, for example:

And configuration in this way takes precedence, that is, when the mode and configuration class exist together, the property configured in this way takes precedence. This feature is supported from 1.3.0.

eg:

<build>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>3.8.0</version>
      <configuration>
        <source>${maven.compiler.source}</source>
        <target>${maven.compiler.target}</target>
        <annotationProcessorPaths>
          <path>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
          </path>
          <path>
            <groupId>io.github.linpeilie</groupId>
            <artifactId>mapstruct-plus-processor</artifactId>
            <version>${mapstruct-plus.version}</version>
          </path>
          <path>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok-mapstruct-binding</artifactId>
            <version>0.2.0</version>
          </path>
        </annotationProcessorPaths>
        <compilerArgs>
          <arg>-Amapstruct.plus.adapterClassName=DemoConvertMapperAdapter</arg>
          <arg>-Amapstruct.plus.adapterPackage=io.github.linpeilie.adapter</arg>
          <arg>-Amapstruct.plus.mapAdapterClassName=DemoMapConvertMapperAdapter</arg>
        </compilerArgs>
      </configuration>
    </plugin>
  </plugins>
</build>

Configuration Item

mapperPackage

• Description：The package name of the generated Mapper transformation interfaces
• Type：String
• Default：The default is under the same package as the class to be converted.
• Compile Parameter：-Amapstruct.plus.mapperPackage

unmappedSourcePolicy

• Description：Policy when there is no corresponding attribute in the source class
• Type：ReportingPolicy
• Optional：
  • IGNORE：ignore
  • WARN：print warning log
  • ERROR：throw exception
• Default：IGNORE
• Compile Parameter：-Amapstruct.plus.unmappedSourcePolicy

unmappedTargetPolicy

• Description：Policy when there is no corresponding attribute in the target class
• Type：ReportingPolicy
• Optional：
  • IGNORE：ignore
  • WARN：print warning log
  • ERROR：throw exception
• Default：IGNORE
• Compile Parameter：-Amapstruct.plus.unmappedTargetPolicy

nullValueMappingStrategy

• Description：Null object handing policy
• Type：NullValueMappingStrategy
• Optional：
  • RETURN_NULL：return null
  • RETURN_DEFAULT：return default value
• Default：RETURN_NULL
• Compile Parameter：-Amapstruct.plus.nullValueMappingStrategy

nullValuePropertyMappingStrategy

• Description：Policy to deal with when the property value is null
• Type：NullValuePropertyMappingStrategy
• Optional：
  • SET_TO_NULL：setting is null
  • SET_TO_DEFAULT：setting is default value
  • IGNORE：ignore
• Default：SET_TO_NULL
• Compile Parameter：-Amapstruct.plus.nullValuePropertyMappingStrategy

builder

• Description：Constructor mode configuration, MapStruct loses the parent class property when used with Lombok's builder, so the default constructor mode is turned off.
• Type：Builder
• Optional：
  • buildMethod：The constructor creates the constructor when the type is to be build
  • disableBuilder：Open/Close the constructor, and if closed, use only regular getters/setters
• Default：
  • buildMethod：build
  • disableBuilder：true
• Compile Parameter：
  • -Amapstruct.plus.builder.buildMethod
  • -Amapstruct.plus.builder.disableBuilder

adapterPackage

since 1.2.3

• Description：The package name of ConvertAdapterClass and MapConvertMapperAdapter
• Type：String
• Default：io.github.linpeilie
• Compile Parameter：-Amapstruct.plus.adapterPackage

adapterClassName

since 1.2.3

• Description：the class name of ConvertAdapterClass
• Type：String
• Default：ConvertMapperAdapter
• Compile Parameter：-Amapstruct.plus.adapterClassName

mapAdapterClassName

since 1.2.3

• Description：the class name of MapConvertMapperAdapter
• Type：String
• Default：MapConvertMapperAdapter
• Compile Parameter：-Amapstruct.plus.mapAdapterClassName