net.sf.saxon.expr
public class IntegerRangeTest extends Expression
Field Summary | |
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Expression | max |
Expression | min |
Expression | value |
Constructor Summary | |
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IntegerRangeTest(Expression value, Expression min, Expression max)
Construct a IntegerRangeTest |
Method Summary | |
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int | computeCardinality()
Determine the static cardinality |
Expression | copy()
Copy an expression. |
Item | evaluateItem(XPathContext c)
Evaluate the expression |
void | explain(ExpressionPresenter destination)
Diagnostic print of expression structure. |
ItemType | getItemType(TypeHierarchy th)
Get the data type of the items returned |
Expression | getMaxValueExpression()
Get the expression denoting the end of the range |
Expression | getMinValueExpression()
Get the expression denoting the start of the range |
Expression | getValueExpression()
Get the value to be tested |
Iterator<Expression> | iterateSubExpressions()
Get the immediate sub-expressions of this expression. |
Expression | optimize(ExpressionVisitor visitor, ItemType contextItemType)
Perform optimisation of an expression and its subexpressions.
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Expression | promote(PromotionOffer offer, Expression parent)
Promote this expression if possible |
boolean | replaceSubExpression(Expression original, Expression replacement)
Replace one subexpression by a replacement subexpression |
Expression | typeCheck(ExpressionVisitor visitor, ItemType contextItemType)
Type-check the expression |
Parameters: value the integer value to be tested to see if it is in the range min to max inclusive min the lowest permitted value max the highest permitted value
Returns: the copy of the original expression
Parameters: th the type hierarchy cache
Returns: the expression denoting the maximum value
Returns: the expression denoting the minumum value
Returns: the expression that evaluates to the value being tested
Returns: an iterator containing the sub-expressions of this expression
This method is called after all references to functions and variables have been resolved to the declaration of the function or variable, and after all type checking has been done.
Parameters: visitor an expression visitor contextItemType the static type of "." at the point where this expression is invoked. The parameter is set to null if it is known statically that the context item will be undefined. If the type of the context item is not known statically, the argument is set to ITEM_TYPE
Returns: the original expression, rewritten if appropriate to optimize execution
Throws: XPathException if an error is discovered during this phase (typically a type error)
Parameters: original the original subexpression replacement the replacement subexpression
Returns: true if the original subexpression is found