MemoClosureEvaluator

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

All Implemented Interfaces:

SequenceEvaluator
```
public class MemoClosureEvaluator
extends java.lang.Object
implements SequenceEvaluator
```
A MemoClosureEvaluator is a SequenceEvaluator that evaluates an expression lazily and incrementally; it evaluates new items in the result as and when they are needed.

Constructor Summary

Constructors
Constructor Description

MemoClosureEvaluator(Expression input, PullEvaluator inputEvaluator)

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
  - MemoClosureEvaluator
```
public MemoClosureEvaluator(Expression input,
                            PullEvaluator inputEvaluator)
```
- 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.