Package com.arcadedb.query.sql.executor

Class AbstractExecutionStep

java.lang.Object

com.arcadedb.query.sql.executor.AbstractExecutionStep

All Implemented Interfaces:

ExecutionStep, ExecutionStepInternal

Direct Known Subclasses:

AbstractTraverseStep, AbstractUnrollStep, AccumulatingTimeoutStep, BatchStep, CartesianProductStep, CastToStepAbstract, CheckClusterTypeStep, CheckIsEdgeTypeStep, CheckIsVertexTypeStep, CheckRecordImplementationStep, CheckRecordTypeStep, CheckSafeDeleteStep, CheckTypeTypeStep, ConvertToResultInternalStep, ConvertToUpdatableResultStep, CopyDocumentStep, CopyRecordContentBeforeUpdateStep, CountFromIndexStep, CountFromTypeStep, CountStep, CreateEdgesStep, CreateRecordStep, DeleteFromIndexStep, DeleteStep, DistinctExecutionStep, EmptyDataGeneratorStep, EmptyStep, ExpandStep, FetchEdgesFromToVerticesStep, FetchEdgesToVerticesStep, FetchFromClusterExecutionStep, FetchFromClustersExecutionStep, FetchFromIndexedFunctionStep, FetchFromIndexStep, FetchFromResultsetStep, FetchFromRidsStep, FetchFromSchemaBucketsStep, FetchFromSchemaDatabaseStep, FetchFromSchemaIndexesStep, FetchFromSchemaTypesStep, FetchFromTypeExecutionStep, FilterByClustersStep, FilterByTypeStep, FilterNotMatchPatternStep, FilterStep, ForEachStep, GetValueFromIndexEntryStep, GlobalLetExpressionStep, GlobalLetQueryStep, GuaranteeEmptyCountStep, IfStep, InsertValuesStep, LetExpressionStep, LetQueryStep, LimitExecutionStep, MatchFirstStep, MatchPrefetchStep, MatchStep, MoveVertexStep, OrderByStep, ParallelExecStep, ProjectionCalculationStep, RemoveEdgePointersStep, RemoveEmptyOptionalsStep, RetryStep, ReturnMatchPathsStep, ReturnMatchPatternsStep, ReturnStep, SaveElementStep, ScriptLineStep, SetDocumentStepStep, SkipExecutionStep, SubQueryStep, TimeoutStep, UnwindStep, UnwrapPreviousValueStep, UpdateContentStep, UpdateMergeStep, UpdateRemoveStep, UpdateSetStep, UpsertStep, WhileStep

public abstract class AbstractExecutionStep
extends Object
implements ExecutionStepInternal

Author:

Luigi Dell'Aquila (luigi.dellaquila-(at)-gmail.com)

Field Summary

Fields

Modifier and Type	Field	Description
protected CommandContext	context
protected long	cost
static int	DEFAULT_FETCH_RECORDS_PER_PULL
protected ExecutionStepInternal	prev
protected boolean	timedOut

Constructor Summary

Constructors

Constructor	Description
AbstractExecutionStep(CommandContext context)

Method Summary

Modifier and Type	Method	Description
protected ExecutionStepInternal	checkForPrevious()
protected ExecutionStepInternal	checkForPrevious(String exceptionMessage)
void	close()
CommandContext	getContext()
long	getCost()	returns the absolute cost (in nanoseconds) of the execution of this step
protected String	getCostFormatted()
ExecutionStepInternal	getPrev()
boolean	isTimedOut()
protected void	pullPrevious(CommandContext context, int nRecords)
void	sendTimeout()
void	setPrevious(ExecutionStepInternal step)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.arcadedb.query.sql.executor.ExecutionStep

toResult

Methods inherited from interface com.arcadedb.query.sql.executor.ExecutionStepInternal

canBeCached, copy, getDescription, getName, getSubExecutionPlans, getSubSteps, getType, prettyPrint, reset, syncPull

Field Detail

DEFAULT_FETCH_RECORDS_PER_PULL

public static final int DEFAULT_FETCH_RECORDS_PER_PULL

See Also:

Constant Field Values

context

protected final CommandContext context

prev

protected ExecutionStepInternal prev

timedOut

protected boolean timedOut

cost

protected long cost

Constructor Detail

AbstractExecutionStep

public AbstractExecutionStep(CommandContext context)

Method Detail

setPrevious

public void setPrevious(ExecutionStepInternal step)

Specified by:

setPrevious in interface ExecutionStepInternal

getContext

public CommandContext getContext()

getPrev

public ExecutionStepInternal getPrev()

sendTimeout

public void sendTimeout()

Specified by:

sendTimeout in interface ExecutionStepInternal

isTimedOut

public boolean isTimedOut()

Specified by:

isTimedOut in interface ExecutionStepInternal

close

public void close()

Specified by:

close in interface ExecutionStepInternal

getCost

public long getCost()

Description copied from interface: ExecutionStep

returns the absolute cost (in nanoseconds) of the execution of this step

Specified by:

getCost in interface ExecutionStep

Returns:

the absolute cost (in nanoseconds) of the execution of this step, -1 if not calculated

getCostFormatted

protected String getCostFormatted()

checkForPrevious

protected ExecutionStepInternal checkForPrevious()

checkForPrevious

protected ExecutionStepInternal checkForPrevious(String exceptionMessage)

pullPrevious

protected void pullPrevious(CommandContext context,
                            int nRecords)