retronym/scalaxb

scalaxb is an XML data binding tool for Scala.

scalaxb

scalaxb is an XML data-binding tool for Scala that supports W3C XML Schema (xsd) as the input file.

Status

This is still at pre-ALPHA state, and many things don't work. I'd really appreciate if you could run it against your favorite xsd file and let me know the result.

Installation

scalaxb is tested only under Scala 2.8. You can install it using sbaz:

$ sudo sbaz install scalaxb

or build from source:

$ git clone git://github.com/eed3si9n/scalaxb.git scalaxb
$ cd scalaxb
$ sbt sbaz

See the file called INSTALL for details.

Usage

$ scalaxb [options] <schema_file>...

  -d <directory> | --outdir <directory>
        generated files will go into <directory>
  -p <package> | --package <package>
        specifies the target package
  -p:<namespaceURI>=<package> | --package:<namespaceURI>=<package>
        specifies the target package for <namespaceURI>
  -v | --verbose
        be extra verbose
  <schema_file>
        input schema to be converted

Documents

Further info is available at scalaxb.org.

Example

Suppose you have address.xsd:

<schema targetNamespace="http://www.example.com/IPO"
        xmlns="http://www.w3.org/2001/XMLSchema"
        xmlns:ipo="http://www.example.com/IPO">
  <complexType name="Address">
    <sequence>
      <element name="name"   type="string"/>
      <element name="street" type="string"/>
      <element name="city"   type="string"/>
    </sequence>
  </complexType>
</schema>

You then run the following:

$ scalaxb address.xsd

You get address.scala that contains case classes that can convert XML documents conforming to the address.xsd into a case class object, and turn it back again into XML document:

// Generated by <a href="http://scalaxb.org/">scalaxb</a>.
import org.scalaxb.rt

case class Address(name: String,
  street: String,
  city: String)

object Address extends rt.ElemNameParser[Address] {
  val targetNamespace = "http://www.example.com/IPO"

  def parser(node: scala.xml.Node): Parser[Address] =
    (rt.ElemName(targetNamespace, "name")) ~ 
      (rt.ElemName(targetNamespace, "street")) ~ 
      (rt.ElemName(targetNamespace, "city")) ^^
        { case p1 ~ 
      p2 ~ 
      p3 => Address(p1.text,
      p2.text,
      p3.text) }
    
  def toXML(__obj: Address, __namespace: String, __elementLabel: String): scala.xml.NodeSeq = {
    var __scope: scala.xml.NamespaceBinding = scala.xml.TopScope
    __scope = scala.xml.NamespaceBinding("xsi", "http://www.w3.org/2001/XMLSchema-instance", __scope)
    __scope = scala.xml.NamespaceBinding("ipo", "http://www.example.com/IPO", __scope)
    __scope = scala.xml.NamespaceBinding(null, "http://www.example.com/IPO", __scope)
    val node = toXML(__obj, __namespace, __elementLabel, __scope)
    node match {
      case elem: scala.xml.Elem =>
        elem % new scala.xml.PrefixedAttribute(__scope.getPrefix(rt.Helper.XSI_URL),
          "type",
          "ipo:Address", elem.attributes)
      case _ => node
    }
  }

  def toXML(__obj: Address, __namespace: String, __elementLabel: String, __scope: scala.xml.NamespaceBinding): scala.xml.NodeSeq = {
    val prefix = __scope.getPrefix(__namespace)
    var attribute: scala.xml.MetaData  = scala.xml.Null

    scala.xml.Elem(prefix, __elementLabel,
      attribute, __scope,
      Seq.concat(scala.xml.Elem(prefix, "name", scala.xml.Null, __scope, scala.xml.Text(__obj.name.toString)),
        scala.xml.Elem(prefix, "street", scala.xml.Null, __scope, scala.xml.Text(__obj.street.toString)),
        scala.xml.Elem(prefix, "city", scala.xml.Null, __scope, scala.xml.Text(__obj.city.toString))): _*)
  }
}

Bug Reporting

You can send bug reports to Issues, send me a tweet to @eed3si9n, or email.

Licensing

It's the MIT License. See the file called LICENSE.

Contacts

• eed3si9n at gmail dot com
• @eed3si9n