org.apache.cassandra.cql3

Class Validation

java.lang.Object

org.apache.cassandra.cql3.Validation

public abstract class Validation
extends java.lang.Object

A collection of static validation functions reused across statements. Note: this hosts functions that were historically in ThriftValidation, but it's not necessary clear that this is the best place to have this (this is certainly not horrible either though).

Constructor Summary

Constructors

Constructor and Description
Validation()

Method Summary

Modifier and Type	Method and Description
static CFMetaData	validateColumnFamily(java.lang.String keyspaceName, java.lang.String tableName) Retrieves the metadata for the provided keyspace and table name, throwing a meaningful user exception if those doen't exist.
static void	validateKey(CFMetaData metadata, java.nio.ByteBuffer key) Validates a (full serialized) partition key.
static void	validateKeyspaceNotSystem(java.lang.String keyspace) Validates that the provided keyspace is not one of the system keyspace.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Validation

public Validation()

Method Detail

validateColumnFamily

public static CFMetaData validateColumnFamily(java.lang.String keyspaceName,
                                              java.lang.String tableName)
                                       throws InvalidRequestException

Retrieves the metadata for the provided keyspace and table name, throwing a meaningful user exception if those doen't exist.

Parameters:

keyspaceName - the keyspace name.

tableName - the table name.

Returns:

the metadata for table keyspaceName.tableName if it exists (otherwise an InvalidRequestException is thrown).

Throws:

InvalidRequestException - if the table requested doesn't exist.

validateKey

public static void validateKey(CFMetaData metadata,
                               java.nio.ByteBuffer key)
                        throws InvalidRequestException

Validates a (full serialized) partition key.

Parameters:

metadata - the metadata for the table of which to check the key.

key - the serialized partition key to check.

Throws:

InvalidRequestException - if the provided key is invalid.

validateKeyspaceNotSystem

public static void validateKeyspaceNotSystem(java.lang.String keyspace)
                                      throws InvalidRequestException

Validates that the provided keyspace is not one of the system keyspace.

Parameters:

keyspace - the keyspace name to validate.

Throws:

InvalidRequestException - if keyspace is the name of a system keyspace.