Package org.apache.cassandra.cql3

Interface Operation.RawUpdate

All Known Implementing Classes:

Operation.Addition, Operation.Prepend, Operation.SetElement, Operation.SetField, Operation.SetValue, Operation.Substraction

Enclosing class:

Operation

public static interface Operation.RawUpdate

A parsed raw UPDATE operation. This can be one of: - Setting a value: c = v - Setting an element of a collection: c[x] = v - An addition/subtraction to a variable: c = c +/- v (where v can be a collection literal, scalar, or string) - An prepend operation: c = v + c

Method Summary

Modifier and Type	Method	Description
boolean	isCompatibleWith(Operation.RawUpdate other)
Operation	prepare(TableMetadata metadata, ColumnMetadata receiver, boolean canReadExistingState)	This method validates the operation (i.e.

Method Details

prepare

Operation prepare(TableMetadata metadata,
 ColumnMetadata receiver,
 boolean canReadExistingState)
           throws InvalidRequestException

This method validates the operation (i.e. validate it is well typed) based on the specification of the receiver of the operation. It returns an Operation which can be though as post-preparation well-typed Operation.

Parameters:

metadata -

receiver - the column this operation applies to.

canReadExistingState - whether the update depends on existing state

Returns:

the prepared update operation.

Throws:

InvalidRequestException

isCompatibleWith

boolean isCompatibleWith(Operation.RawUpdate other)

Returns:

whether this operation can be applied alongside the other update (in the same UPDATE statement for the same column).