org.opendaylight.yangtools.yang.data.api.schema.xpath

Interface OptimizableXPathExpression

All Superinterfaces:

XPathExpression

@Beta
public interface OptimizableXPathExpression
extends XPathExpression

Interface implemented by XPathExpressions which can be further optimized for execution efficiency at the expense of additional processing being performed on them. The decision to optimize a particular expression is left to the user's discretion. Implementations supporting profile-driven and similar optimizations which depend on data being gathered during evaluation should not implement this interface, but rather perform these optimizations transparently behind the scenes. That implies the users can expect those optimizations not interfering with the user's ability to evaluate the expression.

Method Summary

Modifier and Type	Method and Description
XPathExpression	optimizeExpression() Perform optimization of this expression.

Methods inherited from interface org.opendaylight.yangtools.yang.data.api.schema.xpath.XPathExpression

evaluate, getApexPath, getEvaluationPath

Method Detail

optimizeExpression

@Nonnull
XPathExpression optimizeExpression()

Perform optimization of this expression. If an implementation supports different levels of optimization, it should return an OptimizableXPathExpression as a result of progressing optimizations for as long as it determines further processing can result in execution benefits. Note this expression is expected to remain unchanged.

Returns:

An optimized version of this expression.