| Interface | Description | 
|---|---|
| ColumnMetadata | 
 A common interface for column based  
TypeNode implementations. | 
| Class | Description | 
|---|---|
| AbstractColumnMetadata | 
 Base class for  
ColumnMetadata implementations | 
| ColumnFamilyMetadata | |
| ColumnFamilyMetadataCache | 
 A simple  
ConcurrentMap based cache to store ColumnFamilyMetadata in-memory. | 
| ColumnFamilyMetadataMetadata | 
 A singleton instance of  
ColumnFamilyMetadata for the column family used internally on
 Cassandra to store all introduced types as ColumnFamilyMetadata blobs. | 
| DynamicColumnMetadata | 
 A  
TypeNode implementation representing a dynamic column for which no metadata exists on
 the matching Cassandra column family. | 
| TypedColumnMetadata | 
 A  
TypeNode implementations for representing a typed column. | 
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