AttributeGetter.AttributeGetterElaborator

java.lang.Object
- net.sf.saxon.expr.elab.Elaborator
- - net.sf.saxon.expr.elab.ItemElaborator
  - - net.sf.saxon.expr.AttributeGetter.AttributeGetterElaborator

Enclosing class:

AttributeGetter
```
public static class AttributeGetter.AttributeGetterElaborator
extends ItemElaborator
```
Elaborator for an AttributeGetter expression (which gets a named attribute of the context item and returns its value as an untyped atomic value)

Constructor Summary

Constructors
Constructor Description

AttributeGetterElaborator()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ItemEvaluator`	`elaborateForItem()`	Get a function that evaluates the underlying expression in the form of a `Item`.
`StringEvaluator`	`elaborateForString(boolean zeroLengthWhenAbsent)`	Get a function that evaluates the underlying expression in the form of a Java string, this being the result of applying fn:string() to the result of the expression; except that if the result of the expression is an empty sequence, the result is "" if `zeroLengthWhenAbsent` is set, or null otherwise.

Methods inherited from class net.sf.saxon.expr.elab.ItemElaborator
eagerly, elaborateForBoolean, elaborateForPull, elaborateForPush, elaborateForUnicodeString

Methods inherited from class net.sf.saxon.expr.elab.Elaborator
elaborateForUpdate, getConfiguration, getExpression, handleNullString, handleNullUnicodeString, handlePossiblyNullString, handlePossiblyNullUnicodeString, lazily, setExpression

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

- Constructor Detail
  - AttributeGetterElaborator
```
public AttributeGetterElaborator()
```
- Method Detail
  - elaborateForItem
```
public ItemEvaluator elaborateForItem()
```
    Description copied from class: Elaborator
    
    Get a function that evaluates the underlying expression in the form of a Item. This must only be called for expressions whose result has cardinality zero or one.
    
    Specified by:
    
    elaborateForItem in class ItemElaborator
    
    Returns:
    
    an evaluator for the expression that returns an Item, or null to represent an empty sequence.
  - elaborateForString
```
public StringEvaluator elaborateForString(boolean zeroLengthWhenAbsent)
```
    Get a function that evaluates the underlying expression in the form of a Java string, this being the result of applying fn:string() to the result of the expression; except that if the result of the expression is an empty sequence, the result is "" if zeroLengthWhenAbsent is set, or null otherwise.
    
    Overrides:
    
    elaborateForString in class Elaborator
    
    Parameters:
    
    zeroLengthWhenAbsent - if true, then when the result of the expression is an empty sequence, the result of the StringEvaluator should be a zero-length string. If false, the return value should be null.
    
    Returns:
    
    an evaluator for the expression that returns a string.