Class IndexedValue

java.lang.Object
com.saxonica.ee.optim.SearchableValue
com.saxonica.ee.optim.IndexedValue
All Implemented Interfaces:
GroundedValue, Sequence

public class IndexedValue extends SearchableValue
A representation of a (sequence) value that allows the construction of one or more indexes to provide rapid access to the items in the sequence.
  • Method Details

    • findItems

      public SequenceIterator findItems(Expression use, SequenceIterator values, boolean convertUntypedToOther, AtomicComparer comparer, XPathContext context) throws XPathException
      Retrieve items that match a given index value
      Specified by:
      findItems in class SearchableValue
      Parameters:
      use - the expression whose value is to be matched
      values - the set of values to be found
      convertUntypedToOther - true if untypedAtomic values are to be converted to the type of the other operand
      comparer - AtomicComparer used to compare values for equality (encapsulates a collation if necessary)
      context - the dynamic evaluation context @return an iterator over the items that match the specified values
      Returns:
      an iterator over the items that matched
      Throws:
      XPathException - if an error occurs
    • containsNode

      public boolean containsNode(NodeInfo sought)
      Determine whether the value contains a particular node. This implementation of the method builds a representation of the node-sequence as a Java HashSet the first time it is invoked, and subsequently does a fast lookup in this HashSet rather than performing a sequential search.
      Parameters:
      sought - the sought-after node
      Returns:
      true if the value contains this node