ViewVersion

```
public interface ViewVersion
```
A version of the view at a point in time.
A version consists of a view metadata file.
Versions are created by view operations, like Create and Replace.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default java.lang.String`	`defaultCatalog()`	The default catalog when the view is created.
`Namespace`	`defaultNamespace()`	The default namespace to use when the SQL does not contain a namespace.
`default java.lang.String`	`operation()`	Return the operation which produced the view version
`java.util.List<ViewRepresentation>`	`representations()`	Return the list of other view representations.
`int`	`schemaId()`	The query output schema at version create time, without aliases
`java.util.Map<java.lang.String,java.lang.String>`	`summary()`	Return the version summary
`long`	`timestampMillis()`	Return this version's timestamp.
`int`	`versionId()`	Return this version's id.

- Method Detail
  - versionId
```
int versionId()
```
    Return this version's id. Version ids are monotonically increasing
  - timestampMillis
```
long timestampMillis()
```
    Return this version's timestamp.
    This timestamp is the same as those produced by System.currentTimeMillis().
    
    Returns:
    
    a long timestamp in milliseconds
  - summary
```
java.util.Map<java.lang.String,java.lang.String> summary()
```
    Return the version summary
    
    Returns:
    
    a version summary
  - representations
```
java.util.List<ViewRepresentation> representations()
```
    Return the list of other view representations.
    May contain SQL view representations for other dialects.
    
    Returns:
    
    the list of view representations
  - operation
```
default java.lang.String operation()
```
    Return the operation which produced the view version
    
    Returns:
    
    the string operation which produced the view version
  - schemaId
```
int schemaId()
```
    The query output schema at version create time, without aliases
  - defaultCatalog
```
default java.lang.String defaultCatalog()
```
    The default catalog when the view is created.
  - defaultNamespace
```
Namespace defaultNamespace()
```
    The default namespace to use when the SQL does not contain a namespace.