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Definition Classes: root

Definition Classes: root

This library provides support for the XML literal syntax in Scala programs.

val planets: scala.xml.Elem = <planets>
  <planet id="earth">
    <title>Earth</title>
    <mass unit="kg">5.9742e24</mass>
    <radius unit="m">6378.14e3</radius>
  </planet>
  <planet id="mars">
    <title>Mars</title>
    <mass unit="kg">0.64191e24</mass>
    <radius unit="m">3397.0e3</radius>
  </planet>
</planets>

Additionally, you can mix Scala expressions in your XML elements by using the curly brace notation:

val sunMass = 1.99e30
val sunRadius = 6.96e8
val star = <star>
  <title>Sun</title>
  <mass unit="kg">{ sunMass }</mass>
  <radius unit="m">{ sunRadius }</radius>
  <surface unit="m²">{ 4 * Math.PI * Math.pow(sunRadius, 2) }</surface>
  <volume unit="m³">{ 4/3 * Math.PI * Math.pow(sunRadius, 3) }</volume>
</star>

An XML element, for example <star/> and <planet/>, is represented in this library as a case class, scala.xml.Elem.

The sub-elements of XML values share a common base class, scala.xml.Node.

However, the non-element declarations found in XML files share a different common base class, scala.xml.dtd.Decl. Additionally, document type declarations are represented by a different trait, scala.xml.dtd.DTD.

For reading and writing XML data to and from files, see scala.xml.XML. The default parser of XML data is the Xerces parser and is provided in Java by javax.xml.parsers.SAXParser.

A less greedy XML reader can return data as a sequential collection of events, see scala.xml.pull.XMLEventReader.

For more control of the input, use the parser written in Scala that is provided, scala.xml.parsing.ConstructingParser.

For working with XHTML input, use scala.xml.parsing.XhtmlParser.

For more control of the output, use the scala.xml.PrettyPrinter.

Utility methods for working with XML data are provided in scala.xml.Utility.

XML values in Scala are immutable, but you can traverse and transform XML data with a scala.xml.transform.RuleTransformer.

Definition Classes: scala

package dtd

Definition Classes: xml

package factory

Definition Classes: xml

package include

Definition Classes: xml

package parsing

Definition Classes: xml

package persistent

Definition Classes: xml

package pull

Classes needed to view an XML document as a series of events.

Classes needed to view an XML document as a series of events. The document is parsed by an scala.xml.pull.XMLEventReader instance. You can treat it as an scala.collection.Iterator to retrieve the events, which are all subclasses of scala.xml.pull.XMLEvent.

scala> val source = Source.fromString("""<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<?instruction custom value="customvalue"?>
<!DOCTYPE foo [
  <!ENTITY bar "BAR">
]><foo>Hello<bar>&bar;</bar><bar>></bar></foo>""")

source: scala.io.Source = non-empty iterator

scala> val reader = new XMLEventReader(source)
reader: scala.xml.pull.XMLEventReader = non-empty iterator

scala> reader.foreach{ println(_) }
EvProcInstr(instruction,custom value="customvalue")
EvText(
)
EvElemStart(null,foo,,)
EvText(Hello)
EvComment( this is a comment )
EvElemStart(null,bar,,)
EvText(BAR)
EvElemEnd(null,bar)
EvElemStart(null,bar,,)
EvEntityRef(gt)
EvElemEnd(null,bar)
EvElemEnd(null,foo)
EvText(

)

Definition Classes: xml

package transform

Definition Classes: xml

MalformedAttributeException

XML

MetaData

Companion class MetaData

object MetaData extends java.io.Serializable

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java.io.Serializable, AnyRef, Any

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final def asInstanceOf[T0]: T0
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protected[lang]
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@throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
def concatenate(attribs: MetaData, new_tail: MetaData): MetaData
appends all attributes from new_tail to attribs, without attempting to detect or remove duplicates.
appends all attributes from new_tail to attribs, without attempting to detect or remove duplicates. The method guarantees that all attributes from attribs come before the attributes in new_tail, but does not guarantee to preserve the relative order of attribs.
Duplicates can be removed with normalize.
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final def getClass(): Class[_ <: AnyRef]
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def getUniversalKey(attrib: MetaData, scope: NamespaceBinding): String
returns key if md is unprefixed, pre+key is md is prefixed
def hashCode(): Int
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@native() @HotSpotIntrinsicCandidate()
final def isInstanceOf[T0]: Boolean
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final def ne(arg0: AnyRef): Boolean
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def normalize(attribs: MetaData, scope: NamespaceBinding): MetaData
returns normalized MetaData, with all duplicates removed and namespace prefixes resolved to namespace URIs via the given scope.
final def notify(): Unit
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final def notifyAll(): Unit
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final def synchronized[T0](arg0: => T0): T0
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def toString(): String
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def update(attribs: MetaData, scope: NamespaceBinding, updates: MetaData): MetaData
returns MetaData with attributes updated from given MetaData
final def wait(arg0: Long, arg1: Int): Unit
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final def wait(): Unit
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def finalize(): Unit
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Deprecated
(Since version ) see corresponding Javadoc for more information.

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MetaData

Companion class MetaData

object MetaData extends java.io.Serializable

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Companion class MetaData

object MetaData extends java.io.Serializable

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MetaData