Vertica::PlanContext Class Reference
Shared query-plan state, used when different parts of query planning take place on different nodes. For example, if some work is done on the query initiator node and some is done on each node executing the query, this class stores shared state.
Inheritance diagram for Vertica::PlanContext:
Collaboration diagram for Vertica::PlanContext:
| Public Member Functions | |
|---|---|
| PlanContext (ParamWriter &writer) | |
| PlanContext (ParamWriter &writer, std::vector clusterNodes) | |
| const std::vector & | getClusterNodes () |
| virtual ParamReader & | getReader () |
| virtual ParamWriter & | getWriter () |
Detailed Description
Shared query-plan state, used when different parts of query planning take place on different nodes. For example, if some work is done on the query initiator node and some is done on each node executing the query, this class stores shared state.
Member Function Documentation
◆getClusterNodes()
const std::vector& Vertica::PlanContext::getClusterNodes()
inline Get a list of all of the nodes in the current cluster, by node name
Referenced by Vertica::NodeSpecifyingPlanContext::setTargetNodes().
◆getReader()
virtual ParamReader& Vertica::PlanContext::getReader()
inlinevirtual
Get a read-only instance of the current context
◆getWriter()
virtual ParamWriter& Vertica::PlanContext::getWriter()
inlinevirtual
Get the current context for writing
Reimplemented in Vertica::ExecutorPlanContext.
Referenced by Vertica::ExecutorPlanContext::getWriter().