ComplexColumnDesc (Jackcess 5.0.3 API)

java.lang.Object
- com.healthmarketscience.jackcess.impl.ComplexColumnDesc

```
public class ComplexColumnDesc
extends Object
```
The complex column which a ColumnBuilder declares. A complex column is a column plus a table of values and a row which ties the two together, and this carries what the caller asked for until ComplexColumnCreator builds them.

Author:

James Ahlborn

Usage:

Advanced: This class is for advanced/internal use.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static ComplexColumnDesc`	`attachment()`
`ComplexColumnDesc`	`copy()`
`static ComplexColumnDesc`	`fromColumn(Column template)`	Reads the declaration back off a complex column which exists, so that a column can be copied with `ColumnBuilder.setFromColumn(com.healthmarketscience.jackcess.Column)`.
`int`	`getColumnCount()`
`String`	`getMemoColumnName()`
`String`	`getRowSource()`
`String`	`getRowSourceType()`
`ComplexDataType`	`getType()`
`DataType`	`getValueType()`
`static ComplexColumnDesc`	`multiValue(DataType valueType)`
`void`	`setRowSource(String rowSourceType, String rowSource, int columnCount)`
`String`	`toString()`
`void`	`validate(String colName)`	Checks that this declaration is complete enough to build.
`static ComplexColumnDesc`	`versionHistory(String memoColumnName)`

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

Method Detail

multiValue

public static ComplexColumnDesc multiValue(DataType valueType)

attachment

public static ComplexColumnDesc attachment()

versionHistory

public static ComplexColumnDesc versionHistory(String memoColumnName)

fromColumn
```
public static ComplexColumnDesc fromColumn(Column template)
                                    throws IOException
```
Reads the declaration back off a complex column which exists, so that a column can be copied with ColumnBuilder.setFromColumn(com.healthmarketscience.jackcess.Column).

Returns:

the declaration, or null if the column is not a complex one

Throws:

IOException

copy
```
public ComplexColumnDesc copy()
```
Returns:

a declaration of the same complex column

getType
```
public ComplexDataType getType()
```

getValueType
```
public DataType getValueType()
```

getMemoColumnName
```
public String getMemoColumnName()
```

getRowSourceType
```
public String getRowSourceType()
```

getRowSource
```
public String getRowSource()
```

getColumnCount
```
public int getColumnCount()
```

setRowSource

public void setRowSource(String rowSourceType,
                         String rowSource,
                         int columnCount)

validate
```
public void validate(String colName)
```
Checks that this declaration is complete enough to build.

Throws:

IllegalArgumentException - if it is not

toString
```
public String toString()
```
Overrides:

toString in class Object