Package net.sf.saxon.expr.parser

Class ContextItemStaticInfo

java.lang.Object
net.sf.saxon.expr.parser.ContextItemStaticInfo
Direct Known Subclasses:
ContextItemStaticInfoEE
public class ContextItemStaticInfo extends Object
A data structure that represents the required type of the context item, together with information about whether it is known to be present or absent or whether it is not known statically whether it is present or absent.

  • Field Details

  • Constructor Details

    • ContextItemStaticInfo

      public ContextItemStaticInfo(ItemType itemType, boolean maybeUndefined)
      Create a ContextItemStaticInfo
      Parameters:
      itemType - the item type of the context item. If the context item is absent, set this to ErrorType.getInstance().
      maybeUndefined - set to true if it is possible (or certain) that the context item will be absent.

  • Method Details

    • setContextSettingExpression

      public void setContextSettingExpression(Expression setter)

    • getContextSettingExpression

      public Expression getContextSettingExpression()

    • getItemType

      public ItemType getItemType()
      Get the static type of the context item. If the context item is known to be undefined, the returned value is
      Returns:
      the static context item type

    • getContextItemUType

      public UType getContextItemUType()
      Get the static type of the context item as a UType
      Returns:
      the static context item type

    • isPossiblyAbsent

      public boolean isPossiblyAbsent()
      Ask whether it is possible that the context item is absent
      Returns:
      true if the context item might be absent

    • setContextPostureStriding

      public void setContextPostureStriding()
      Set streaming posture. The Saxon-HE version of this method has no effect.

    • setContextPostureGrounded

      public void setContextPostureGrounded()
      Set streaming posture. The Saxon-HE version of this method has no effect.

    • isStrictStreamabilityRules

      public boolean isStrictStreamabilityRules()

    • setParentless

      public void setParentless(boolean parentless)

    • isParentless

      public boolean isParentless()