org.apache.cassandra.cql.hooks

Interface PreExecutionHook

public interface PreExecutionHook

Run before the CQL Statement is executed in QueryProcessor. The CQLStatement returned from the processStatement method is what is actually executed by the QueryProcessor.

Method Summary

Modifier and Type	Method and Description
CQLStatement	processStatement(CQLStatement statement, ExecutionContext context) Perform pre-processing on a CQL statement prior to it being executed by the QueryProcessor.

Method Detail

processStatement

CQLStatement processStatement(CQLStatement statement,
                              ExecutionContext context)
                       throws RequestExecutionException,
                              RequestValidationException

Perform pre-processing on a CQL statement prior to it being executed by the QueryProcessor. If required, implementations may modify the statement as the returned instance is what is actually executed.

Parameters:

statement - the statement to perform pre-processing on

context - execution context containing additional info about the operation and statement

Returns:

the actual statement that will be executed, possibly a modification of the initial statement

Throws:

RequestExecutionException, - RequestValidationException

RequestExecutionException

RequestValidationException