javax.xml.xquery
public interface XQSequenceType
XQSequenceType
interface represents a sequence type as
XQuery 1.0: An XML Query language.
The XQSequenceType
is the base interface for the
XQItemType
interface and contains an occurence indicator.
Field Summary | |
---|---|
static int | OCC_EMPTY |
static int | OCC_EXACTLY_ONE |
static int | OCC_ONE_OR_MORE |
static int | OCC_ZERO_OR_MORE |
static int | OCC_ZERO_OR_ONE |
Method Summary | |
---|---|
boolean | equals(Object o)
Compares the specified object with this sequence type for equality. |
int | getItemOccurrence()
Returns the occurrence indicator for the sequence type.
|
XQItemType | getItemType()
Returns the type of the item in the sequence type.
|
int | hashCode()
Returns a hash code consistent with the definition of the equals method.
|
String | toString()
Returns a human-readable implementation-defined string representation of
the sequence type.
|
true
only if the argument is a sequence type object which
represents the same XQuery sequence type.
equals
and
hashCode
across different implementations the following
algorithm must be used. Return true
if and only if both
objects are XQsequenceType
and:
getItemOccurrence()
is equalOCC_EMPTY
, getItemType()
is equalParameters: o an XQItemType
object representing an XQuery
sequence type
Returns: true
if the input item type object represents
the same XQuery sequence type, false
otherwise
Description | Value |
---|---|
Zero or one | OCC_ZERO_OR_ONE |
Exactly one | OCC_EXACTLY_ONE |
Zero or more | OCC_ZERO_OR_MORE |
One or more | OCC_ONE_OR_MORE |
Empty | OCC_EMPTY |
Returns: int
indicating the occurrence indicator
Returns: XQItemType
representing the
item type in the sequence. null
is returned in case of an empty sequence.
equals
and
hashCode
across different implementations the following
algorithm must be used:
int hashCode; if (getItemOccurrence() == XQSequenceType.OCC_EMPTY) { hashCode = 1; } else { hashCode = getItemOccurrence()*31 + getItemType().hashCode(); }
Returns: hash code for this item type
Returns: a String
representation of the sequence type