GlobalContextRequirement

```
public class GlobalContextRequirement
extends java.lang.Object
```
Information about the requirements placed by a query or stylesheet on the global context item: whether it is mandatory or optional, what its type must be, whether it is streamable, whether it has a default value. In XSLT, if more than one module specifies a global context item type, they must be the same. In XQuery, several modules can specify different required types, and the actual context item must satisfy them all.

Constructors
Constructor and Description
`GlobalContextRequirement()`

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addRequiredItemType(ItemType requiredItemType)`
`void`	`export(ExpressionPresenter out)`
`protected void`	`exportAccumulatorUsages(ExpressionPresenter out)`
`Expression`	`getDefaultValue()`
`ItemType`	`getRequiredItemType()`
`java.util.List<ItemType>`	`getRequiredItemTypes()`
`boolean`	`isAbsentFocus()`
`boolean`	`isExternal()` Ask whether (in XQuery) the global context item is declared as external
`boolean`	`isMayBeOmitted()`
`void`	`setAbsentFocus(boolean absent)`
`void`	`setDefaultValue(Expression defaultValue)`
`void`	`setExternal(boolean external)` Say whether (in XQuery) the global context item is declared as external
`void`	`setMayBeOmitted(boolean mayOmit)`

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

Constructor Detail
- GlobalContextRequirement
```
public GlobalContextRequirement()
```

public java.util.List<ItemType> getRequiredItemTypes()

public void addRequiredItemType(ItemType requiredItemType)

public void setDefaultValue(Expression defaultValue)

public void export(ExpressionPresenter out)
            throws XPathException

protected void exportAccumulatorUsages(ExpressionPresenter out)

public void setAbsentFocus(boolean absent)

public void setMayBeOmitted(boolean mayOmit)

Class GlobalContextRequirement