Macrooom is an object-object mapper library.
Developers need sometimes similar but different classes depending a purpose. Macrooom makes it easy to convert one object to another. It generates the code with Scala macro.
- Mapping between Scala classes
- Mapping between Java and Scala classes.
- Nested classes
Just add Macrooom to your sbt build settings:
libraryDependencies ++= Seq(
"com.github.h-kishi" %% "macrooom" % "0.2.0"
)
case class SourceClass(id: Int, name: String) class TargetClass {
private String name;
public void setName(String name) { this.name = name; }
public String getName() { return name; }
}import macrooom._
// Convert from Scala object to Java object
def convert(src: SourceClass) = ObjectMapper.convertTo[SourceClass, TargetClass](src)
val source = SourceClass(1, "ScalaToJava")
val target = convert(source)Scala class is instantiated based on the primary constructor.
Here is an example source class:
class SourceClass(val id: Int, val name: String)Here is an example target case class:
case class TargetClass(id: Int, name: String)Here is generated by the macro:
// def convert(source: SourceClass) = ObjectMapper.convertTo[SourceClass, TargetClass](source)
def convert(source: SourceClass): TargetClass = new TargetClass(
id = source.id
name = source.name
)
Java class is instantiated with default constructor and initialized using the accessors.
Here is an example source class:
case class SourceClass(val id: Int, val name: String)Here is an example target case class:
class TargetClass {
private int id;
private String name;
public void setId(int id) { id = id; }
public int getName() { return id; }
public void setName(String name) { this.name = name; }
public String getName() { return name; }
}Here is generated by the macro:
// def convert(source: SourceClass) = ObjectMapper.convertTo[SourceClass, TargetClass](source)
def convert(source: SourceClass): TargetClass = new TargetClass {
setId(source.id)
setName(source.name)
}