| Interface | Description | 
|---|---|
| ColumnMetadata | A common interface for column based  TypeNodeimplementations. | 
| Class | Description | 
|---|---|
| AbstractColumnMetadata | Base class for  ColumnMetadataimplementations | 
| ColumnFamilyMetadata | |
| ColumnFamilyMetadataCache | A simple  ConcurrentMapbased cache to storeColumnFamilyMetadatain-memory. | 
| ColumnFamilyMetadataMetadata | A singleton instance of  ColumnFamilyMetadatafor the column family used internally on
 Cassandra to store all introduced types asColumnFamilyMetadatablobs. | 
| DynamicColumnMetadata | A  TypeNodeimplementation representing a dynamic column for which no metadata exists on
 the matching Cassandra column family. | 
| TypedColumnMetadata | A  TypeNodeimplementations for representing a typed column. | 
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