Class ItemType

java.lang.Object
net.sf.saxon.s9api.ItemType

public class ItemType extends Object
An item type, as defined in the XPath/XQuery specifications.

This class contains a number of static properties to obtain instances representing simple item types, such as item(), node(), and xs:anyAtomicType.

More complicated item types, especially those that are dependent on information in a schema, are available using factory methods on the ItemTypeFactory object.

  • Field Details

    • ANY_ITEM

      public static ItemType ANY_ITEM
      ItemType representing the type item(), that is, any item at all
    • ANY_NODE

      public static ItemType ANY_NODE
      ItemType representing the type node(), that is, any node
    • ANY_ATOMIC_VALUE

      public static ItemType ANY_ATOMIC_VALUE
      ItemType representing the type xs:anyAtomicType, that is, any atomic value
  • Constructor Details

  • Method Details

    • matches

      public boolean matches(XdmItem item)
      Determine whether this item type matches a given item.
      Parameters:
      item - the item to be tested against this item type
      Returns:
      true if the item matches this item type, false if it does not match.
    • subsumes

      public boolean subsumes(ItemType other)
      Determine whether this ItemType subsumes another ItemType. Specifically, A.subsumes(B) is true if every value that matches the ItemType B also matches the ItemType A.
      Parameters:
      other - the other ItemType
      Returns:
      true if this ItemType subsumes the other ItemType. This includes the case where A and B represent the same ItemType.
      Since:
      9.1
    • getUnderlyingItemType

      public ItemType getUnderlyingItemType()
      Method to get the underlying Saxon implementation object

      This gives access to Saxon methods that may change from one release to another.

      Returns:
      the underlying Saxon implementation object
    • getProcessor

      protected Processor getProcessor()
      Get the underlying Processor
      Returns:
      the processor used to create this ItemType, if any