com.jclark.xsl.expr

Class ConvertibleNodeSetExpr

abstract class ConvertibleNodeSetExpr extends ConvertibleExpr implements NodeSetExpr

A compiled XPath pattern component which returns a Node set, but is convertible (castable) to a String expression, boolean expression or VariantExpression

Field Summary
static int	SINGLE_LEVEL If this is set, then all nodes in the result of eval(x, c) are guaranteed to be at the same level of the tree.
static int	STAYS_IN_SUBTREE If this is set, then all nodes in the result of eval(x, c) are guaranteed to be in the subtree rooted at x.

Method Summary
ConvertibleNodeSetExpr	compose(ConvertibleNodeSetExpr expr) Return an expression for this/expr
Pattern	getChildrenNodePattern()
int	getOptimizeFlags()
ConvertibleBooleanExpr	makeBooleanExpr()
ConvertibleNodeSetExpr	makeNodeSetExpr()
ConvertibleStringExpr	makeStringExpr()
ConvertibleVariantExpr	makeVariantExpr()

If this is set, then all nodes in the result of eval(x, c) are guaranteed to be at the same level of the tree. More precisely, define the level of a node to be the number of ancestors it has, and then define an expression to be single-level if and only if there exists an integer n such that for any node x, for any node y in the result of evaluating the expression with respect to x, the difference between the level of x and the level of y is equal to n. For example, the children axis is single-level but the descendants axis is not.

Class ConvertibleNodeSetExpr

Field Detail

SINGLE_LEVEL

STAYS_IN_SUBTREE

Method Detail

compose

getChildrenNodePattern

getOptimizeFlags

makeBooleanExpr

makeNodeSetExpr

makeStringExpr

makeVariantExpr