LazyPullEvaluator

java.lang.Object
- net.sf.saxon.expr.elab.LazyPullEvaluator

All Implemented Interfaces:

SequenceEvaluator
```
public class LazyPullEvaluator
extends java.lang.Object
implements SequenceEvaluator
```
SequenceEvaluator that evaluates an expression lazily in pull mode; that is, it delivers a LazySequence which defers actual evaluation until the value is actually needed.

Constructor Summary

Constructors
Constructor Description

LazyPullEvaluator(PullEvaluator select)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Sequence`	`evaluate(XPathContext context)`	Evaluate a construct to produce a value (which might be a lazily evaluated Sequence)

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - LazyPullEvaluator
```
public LazyPullEvaluator(PullEvaluator select)
```
- Method Detail
  - evaluate
```
public Sequence evaluate(XPathContext context)
                  throws XPathException
```
    Evaluate a construct to produce a value (which might be a lazily evaluated Sequence)
    
    Specified by:
    
    evaluate in interface SequenceEvaluator
    
    Parameters:
    
    context - the evaluation context
    
    Returns:
    
    a Sequence (not necessarily grounded)
    
    Throws:
    
    XPathException - if a dynamic error occurs during the evaluation.