SchemaKeyspace (apache-cassandra API)

java.lang.Object
- org.apache.cassandra.schema.SchemaKeyspace

```
@NotThreadSafe
public final class SchemaKeyspace
extends java.lang.Object
```
system_schema.* tables and methods for manipulating them. Please notice this class is _not_ thread safe and all methods which reads or updates the data in schema keyspace should be accessed only from the implementation of SchemaUpdateHandler in synchronized blocks.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static java.util.UUID`	`calculateSchemaDigest()`	Read schema from system keyspace and calculate MD5 digest of every row, resulting digest will be converted into UUID which would act as content-based version of the schema.
`static Keyspaces`	`fetchNonSystemKeyspaces()`
`static KeyspaceMetadata`	`metadata()`

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

- Method Detail
  - metadata
```
public static KeyspaceMetadata metadata()
```
  - calculateSchemaDigest
```
public static java.util.UUID calculateSchemaDigest()
```
    Read schema from system keyspace and calculate MD5 digest of every row, resulting digest will be converted into UUID which would act as content-based version of the schema.
  - fetchNonSystemKeyspaces
```
public static Keyspaces fetchNonSystemKeyspaces()
```