RowExpander (Drools Workbench - Guided Decision Table Editor - Client 7.70.0.Final API)

java.lang.Object
- org.drools.workbench.screens.guided.dtable.client.wizard.table.pages.RowExpander

```
public class RowExpander
extends Object
```
A utility class to expand Condition column definitions into rows. Action columns are not expanded, as the use-case is that a user-determined action should be specified for each combination of Conditions. Where a column is defined as having multiple values (Guvnor enum, Java enum or Decision Table Value List) the number of rows is the Cartesian Product of all combinations.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

class RowExpander.RowIterator
An iterator that retrieves the expanded rows one at a time

Constructor Summary

Constructors
Constructor	Description
`RowExpander(org.drools.workbench.models.guided.dtable.shared.model.GuidedDecisionTable52 model, org.kie.workbench.common.widgets.client.datamodel.AsyncPackageDataModelOracle oracle)`	Constructor

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`List<org.drools.workbench.screens.guided.dtable.client.wizard.table.pages.RowExpander.ColumnValues>`	`getColumns()`
`RowExpander.RowIterator`	`iterator()`	Rather than return a List of rows as the expanded form we expose an Iterator with which the expanded form can be retrieved.
`void`	`setExpandColumn(org.drools.workbench.models.guided.dtable.shared.model.BaseColumn column, boolean expandColumn)`	Indicate whether the provided column should be expanded or not.

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

- Constructor Detail
  - RowExpander
```
public RowExpander(org.drools.workbench.models.guided.dtable.shared.model.GuidedDecisionTable52 model,
                   org.kie.workbench.common.widgets.client.datamodel.AsyncPackageDataModelOracle oracle)
```
    Constructor
    
    Parameters:
    
    model -
    
    oracle -
- Method Detail
  - getColumns
```
public List<org.drools.workbench.screens.guided.dtable.client.wizard.table.pages.RowExpander.ColumnValues> getColumns()
```
  - iterator
```
public RowExpander.RowIterator iterator()
```
    Rather than return a List of rows as the expanded form we expose an Iterator with which the expanded form can be retrieved. This decision was to avoid potentially hugh transient Lists being created; as the results from this class will be transformed into other representations.
    
    Returns:
  - setExpandColumn
```
public void setExpandColumn(org.drools.workbench.models.guided.dtable.shared.model.BaseColumn column,
                            boolean expandColumn)
```
    Indicate whether the provided column should be expanded or not. If the column was not part of the Decision Table used in the Constructor no action is taken.
    
    Parameters:
    
    column -
    
    expandColumn -