net.sf.saxon.value
Class Cardinality
public final
class
Cardinality
extends Object
This class contains static methods to manipulate the cardinality
property of a type.
Cardinality of expressions is denoted by one of the values ONE_OR_MORE, ZERO_OR_MORE,
ZERO_OR_ONE, EXACTLY_ONE, or EMPTY. These are combinations of the three bit-significant
values ALLOWS_ZERO, ALLOWS_ONE, and ALLOWS_MANY.
Method Summary |
static int | add(int c1, int c2)
Add two cardinalities |
static boolean | allowsMany(int cardinality)
Determine whether multiple occurrences are allowed |
static boolean | allowsZero(int cardinality)
Determine whether empty sequence is allowed |
static String | getOccurrenceIndicator(int cardinality)
Get the occurence indicator representing the cardinality |
static int | multiply(int c1, int c2)
Multiply two cardinalities |
static boolean | subsumes(int c1, int c2)
Test if one cardinality subsumes another. |
static int | sum(int c1, int c2)
Form the sum of two cardinalities |
static String | toString(int cardinality)
Display the cardinality |
static int | union(int c1, int c2)
Form the union of two cardinalities. |
public static final int add(int c1, int c2)
Add two cardinalities
public static final boolean allowsMany(int cardinality)
Determine whether multiple occurrences are allowed
public static final boolean allowsZero(int cardinality)
Determine whether empty sequence is allowed
public static String getOccurrenceIndicator(int cardinality)
Get the occurence indicator representing the cardinality
public static final int multiply(int c1, int c2)
Multiply two cardinalities
public static final boolean subsumes(int c1, int c2)
Test if one cardinality subsumes another. Cardinality c1 subsumes c2 if every option permitted
by c2 is also permitted by c1.
Parameters: c1 a cardinality c2 another cardinality
Returns: true if if every option permitted
by c2 is also permitted by c1.
public static final int sum(int c1, int c2)
Form the sum of two cardinalities
public static String toString(int cardinality)
Display the cardinality
public static final int union(int c1, int c2)
Form the union of two cardinalities. The cardinality of the expression "if (c) then e1 else e2"
is the union of the cardinalities of e1 and e2.
Parameters: c1 a cardinality c2 another cardinality
Returns: the cardinality that allows both c1 and c2