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java.lang.Objectnet.sf.saxon.value.Value
net.sf.saxon.value.ShareableSequence
A sequence value implemented extensionally using an extensible List whose leading part can be shared with other sequence values. The list can be appended to by other users (at most one other user!), but the items within the range used by this sequence value cannot be modified.
| Field Summary |
| Fields inherited from class net.sf.saxon.value.Value |
EMPTY_CLASS_ARRAY |
| Fields inherited from interface net.sf.saxon.expr.Expression |
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD |
| Fields inherited from interface net.sf.saxon.om.ValueRepresentation |
EMPTY_VALUE_ARRAY |
| Constructor Summary | |
ShareableSequence(java.util.List list)
Construct an sequence from an array of items. |
|
| Method Summary | |
boolean |
effectiveBooleanValue(XPathContext context)
Get the effective boolean value |
int |
getCardinality()
Determine the cardinality |
int |
getImplementationMethod()
An implementation of Expression must provide at least one of the methods evaluateItem(), iterate(), or process(). |
ItemType |
getItemType(TypeHierarchy th)
Get the (lowest common) item type |
int |
getLength()
Get the number of items in the sequence |
java.util.List |
getList()
Get the underlying list |
boolean |
isShareable()
Determine whether another value can share this list. |
Item |
itemAt(int n)
Get the n'th item in the sequence (starting with 0 as the first item) |
SequenceIterator |
iterate(XPathContext context)
Return an iterator over this sequence. |
Value |
reduce()
Reduce a value to its simplest form. |
Value |
simplify()
Simplify this value |
| Methods inherited from class net.sf.saxon.value.Value |
asItem, asIterator, asValue, checkPermittedContents, convert, convertJavaObjectToXPath, convertToJava, display, equals, evaluateAsString, evaluateItem, getDependencies, getIterator, getParentExpression, getSpecialProperties, getStringValue, getStringValueCS, hashCode, iterateSubExpressions, makeQNameValue, optimize, process, promote, simplify, stringToNumber, toString, typeCheck |
| Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
public ShareableSequence(java.util.List list)
list - the list of items to be included in the sequence| Method Detail |
public boolean isShareable()
public java.util.List getList()
public int getImplementationMethod()
public Value simplify()
public Value reduce()
reduce in class Valuepublic int getLength()
getLength in class Valuepublic int getCardinality()
getCardinality in interface ExpressiongetCardinality in class ValueCardinalitypublic ItemType getItemType(TypeHierarchy th)
getItemType in interface ExpressiongetItemType in class Valueth -
public Item itemAt(int n)
itemAt in class Valuen - the position of the required item
public SequenceIterator iterate(XPathContext context)
context - dynamic evaluation context; not used in this
implementation of the method
public boolean effectiveBooleanValue(XPathContext context)
throws XPathException
effectiveBooleanValue in interface ExpressioneffectiveBooleanValue in class Valuecontext - The context in which the expression is to be evaluated
XPathException - if any dynamic error occurs evaluating the
expression
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