net.sf.saxon.om
Interface GroundedValue

All Superinterfaces:

ValueRepresentation

All Known Implementing Classes:

AnyURIValue, AtomicValue, Base64BinaryValue, BigIntegerValue, BooleanValue, CalendarValue, DateTimeValue, DateValue, DayTimeDurationValue, DecimalValue, DoubleValue, DurationValue, EmptySequence, FirstClassFunction, FloatValue, GDateValue, GDayValue, GMonthDayValue, GMonthValue, GYearMonthValue, GYearValue, HexBinaryValue, Int64Value, IntegerRange, IntegerValue, NotationValue, NumericValue, ObjectValue, QNameValue, QualifiedNameValue, SequenceExtent, SingletonNode, StringValue, TimeValue, UntypedAtomicValue, YearMonthDurationValue

public interface GroundedValue
extends ValueRepresentation

A value that exists in memory and that can be directly addressed

Field Summary

Fields inherited from interface net.sf.saxon.om.ValueRepresentation

EMPTY_VALUE_ARRAY

Method Summary

Item	itemAt(int n) Get the n'th item in the value, counting from 0
GroundedValue	subsequence(int start, int length) Get a subsequence of the value

Methods inherited from interface net.sf.saxon.om.ValueRepresentation

getStringValue, getStringValueCS

Method Detail

itemAt

Item itemAt(int n)

Get the n'th item in the value, counting from 0

Parameters:

n - the index of the required item, with 0 representing the first item in the sequence

Returns:

the n'th item if it exists, or null otherwise

subsequence

GroundedValue subsequence(int start,
                          int length)

Get a subsequence of the value

Parameters:

start - the index of the first item to be included in the result, counting from zero. A negative value is taken as zero. If the value is beyond the end of the sequence, an empty sequence is returned

length - the number of items to be included in the result. Specify Integer.MAX_VALUE to get the subsequence up to the end of the base sequence. If the value is negative, an empty sequence is returned. If the value goes off the end of the sequence, the result returns items up to the end of the sequence

Returns:

the required subsequence. If min is