org.verdictdb.core.execplan

Interface ExecutableNode

All Known Implementing Classes:

AggCombinerExecutionNode, AggExecutionNode, AsyncAggExecutionNode, ColumnMetadataRetrievalNode, CreateScrambledTableNode, CreateTableAsSelectNode, DropTableExecutionNode, ExecutableNodeBase, PartitionMetadataRetrievalNode, ProjectionNode, QueryNodeBase, QueryNodeWithPlaceHolders, ScramblingNode, SelectAllExecutionNode, StatisticsRetrievalNode

public interface ExecutableNode

Method Summary

Modifier and Type	Method and Description
SqlConvertible	createQuery(List<ExecutionInfoToken> tokens) Creates a query that should be run.
ExecutionInfoToken	createToken(DbmsQueryResult result)
int	getDependentNodeCount()
Map<String,MethodInvocationInformation>	getMethodsToInvokeOnConnection() The methods are invoked on DbmsConnection and its results are set to the ExecutionInfoToken.
void	getNotified(ExecutableNode source, ExecutionInfoToken token)
List<ExecutionTokenQueue>	getSourceQueues() The tokens are retrieved from these queues.
List<ExecutableNode>	getSubscribers() The result of createToken() is broadcasted to these queues.

Method Detail

createQuery

SqlConvertible createQuery(List<ExecutionInfoToken> tokens)
                    throws VerdictDBException

Creates a query that should be run. Its result will be handed to createToken().

Parameters:

tokens -

Returns:

Throws:

VerdictDBException

createToken

ExecutionInfoToken createToken(DbmsQueryResult result)

getSourceQueues

List<ExecutionTokenQueue> getSourceQueues()

The tokens are retrieved from these queues.

Returns:

getSubscribers

List<ExecutableNode> getSubscribers()

The result of createToken() is broadcasted to these queues.

Returns:

getNotified

void getNotified(ExecutableNode source,
                 ExecutionInfoToken token)

getDependentNodeCount

int getDependentNodeCount()

getMethodsToInvokeOnConnection

Map<String,MethodInvocationInformation> getMethodsToInvokeOnConnection()

The methods are invoked on DbmsConnection and its results are set to the ExecutionInfoToken.

Returns:

Pairs of (token key, method name)