| java.lang.Object
 net.sf.saxon.value.Value
net.sf.saxon.value.SingletonNode
| SingletonNode | | public class SingletonNode extends Value (Code) | | A value that is a sequence containing zero or one nodes
|
| SingletonNode | | public SingletonNode(NodeInfo node)(Code) | | Create a node-set containing zero or one nodes
Parameters:
node - The node to be contained in the node-set, or null if the node-setis to be empty |
| effectiveBooleanValue | | public boolean effectiveBooleanValue(XPathContext context)(Code) | | Get the effective boolean value
|
| evaluateAsString | | public String evaluateAsString(XPathContext context) throws XPathException(Code) | | Evaluate an expression as a String. This function must only be called in contexts
where it is known that the expression will return a single string (or where an empty sequence
is to be treated as a zero-length string). Implementations should not attempt to convert
the result to a string, other than converting () to "". This method is used mainly to
evaluate expressions produced by compiling an attribute value template.
exception:
XPathException - if any dynamic error occurs evaluating theexpression
Parameters:
context - The context in which the expression is to be evaluated the value of the expression, evaluated in the current context.The expression must return a string or (); if the value of theexpression is (), this method returns "". |
| getCardinality | | public int getCardinality()(Code) | | Determine the static cardinality
|
| getImplementationMethod | | public int getImplementationMethod()(Code) | | An implementation of Expression must provide at least one of the methods evaluateItem(), iterate(), or process().
This method indicates which of these methods is prefered.
|
| getItemType | | public ItemType getItemType(TypeHierarchy th)(Code) | | Determine the data type of the items in the expression. This method determines the most
precise type that it can, because it is called when testing that the node conforms to a required
type.
the most precise possible type of the node.
Parameters:
th - |
| getNode | | public NodeInfo getNode()(Code) | | Get the node that forms the node-set. Return null if there is none.
|
| getSpecialProperties | | public int getSpecialProperties()(Code) | | Get the static properties of this expression (other than its type). The result is
bit-signficant. These properties are used for optimizations. In general, if
property bit is set, it is true, but if it is unset, the value is unknown.
|
| getStringValue | | public String getStringValue()(Code) | | Convert the value to a string, using the serialization rules.
For atomic values this is the same as a cast; for sequence values
it gives a space-separated list. For QNames and NOTATIONS, or lists
containing them, it fails.
|
| itemAt | | public Item itemAt(int n) throws XPathException(Code) | | Get the n'th item in the sequence (starting from 0). This is defined for all
SequenceValues, but its real benefits come for a SequenceValue stored extensionally
(or for a MemoClosure, once all the values have been read)
|
| process | | public void process(XPathContext context) throws XPathException(Code) | | Process the instruction, without returning any tail calls
Parameters:
context - The dynamic context, giving access to the current node,the current variables, etc. |
| Fields inherited from net.sf.saxon.value.Value | final public static Class[] EMPTY_CLASS_ARRAY(Code)(Java Doc)
|
| Methods inherited from net.sf.saxon.value.Value | public static Item asItem(ValueRepresentation value, XPathContext context) throws XPathException(Code)(Java Doc)
public static SequenceIterator asIterator(ValueRepresentation val, XPathContext context) throws XPathException(Code)(Java Doc)
public static Value asValue(ValueRepresentation val)(Code)(Java Doc)
public void checkPermittedContents(SchemaType parentType, StaticContext env, boolean whole) throws XPathException(Code)(Java Doc)
public static CharSequence collapseWhitespace(CharSequence in)(Code)(Java Doc)
public static Object convert(Item item) throws XPathException(Code)(Java Doc)
public static Value convertJavaObjectToXPath(Object object, SequenceType requiredType, Configuration config) throws XPathException(Code)(Java Doc)
public Object convertToJava(Class target, XPathContext context) throws XPathException(Code)(Java Doc)
public void display(int level, NamePool pool, PrintStream out)(Code)(Java Doc)
public boolean effectiveBooleanValue(XPathContext context) throws XPathException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
public String evaluateAsString(XPathContext context) throws XPathException(Code)(Java Doc)
public Item evaluateItem(XPathContext context) throws XPathException(Code)(Java Doc)
public int getCardinality()(Code)(Java Doc)
final public int getDependencies()(Code)(Java Doc)
public ItemType getItemType(TypeHierarchy th)(Code)(Java Doc)
public static SequenceIterator getIterator(ValueRepresentation val) throws XPathException(Code)(Java Doc)
public int getLength() throws XPathException(Code)(Java Doc)
final public Container getParentExpression()(Code)(Java Doc)
public int getSpecialProperties()(Code)(Java Doc)
public String getStringValue() throws XPathException(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
public Item itemAt(int n) throws XPathException(Code)(Java Doc)
final public Iterator iterateSubExpressions()(Code)(Java Doc)
public static QNameValue makeQNameValue(Object object, Configuration config)(Code)(Java Doc)
public static CharSequence normalizeWhitespace(CharSequence in)(Code)(Java Doc)
final public Expression optimize(Optimizer opt, StaticContext env, ItemType contextItemType)(Code)(Java Doc)
public void process(XPathContext context) throws XPathException(Code)(Java Doc)
final public Expression promote(PromotionOffer offer)(Code)(Java Doc)
public Value reduce() throws XPathException(Code)(Java Doc)
public boolean schemaEquals(Value obj)(Code)(Java Doc)
final public Expression simplify(StaticContext env)(Code)(Java Doc)
public static double stringToNumber(CharSequence s) throws NumberFormatException(Code)(Java Doc)
public String toString()(Code)(Java Doc)
public static CharSequence trimWhitespace(CharSequence in)(Code)(Java Doc)
final public Expression typeCheck(StaticContext env, ItemType contextItemType)(Code)(Java Doc)
|
|
|