java.lang.Object
- org.apache.poi.ooxml.POIXMLDocumentPart
- - org.apache.poi.xssf.model.CalculationChain

```
public class CalculationChain
extends org.apache.poi.ooxml.POIXMLDocumentPart
```
The cells in a workbook can be calculated in different orders depending on various optimizations and dependencies. The calculation chain object specifies the order in which the cells in a workbook were last calculated.

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.poi.ooxml.POIXMLDocumentPart
  org.apache.poi.ooxml.POIXMLDocumentPart.RelationPart

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`CTCalcChain`	`getCTCalcChain()`
`void`	`readFrom(java.io.InputStream is)`
`void`	`removeItem(int sheetId, java.lang.String ref)`	Remove a formula reference from the calculation chain
`void`	`writeTo(java.io.OutputStream out)`

Methods inherited from class org.apache.poi.ooxml.POIXMLDocumentPart
_invokeOnDocumentRead, addRelation, createRelationship, createRelationship, createRelationship, getPackagePart, getParent, getRelationById, getRelationId, getRelationPartById, getRelationParts, getRelations, isCommited, isCommitted, setCommited, setCommitted, toString

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

public CalculationChain(PackagePart part)
                 throws java.io.IOException

public void readFrom(java.io.InputStream is)
              throws java.io.IOException

public void writeTo(java.io.OutputStream out)
             throws java.io.IOException

Constructors
Constructor	Description
`CalculationChain()`
`CalculationChain(PackagePart part)`

Class CalculationChain