Package com.orientechnologies.orient.core.sql.executor

Class AbstractTraverseStep

java.lang.Object

com.orientechnologies.orient.core.sql.executor.AbstractExecutionStep

com.orientechnologies.orient.core.sql.executor.AbstractTraverseStep

All Implemented Interfaces:

OExecutionStep, OExecutionStepInternal

Direct Known Subclasses:

BreadthFirstTraverseStep, DepthFirstTraverseStep

public abstract class AbstractTraverseStep
extends AbstractExecutionStep

Created by luigidellaquila on 26/10/16.

Field Summary

Fields

Modifier and Type	Field	Description
protected List<OResult>	entryPoints
protected final OInteger	maxDepth
protected final List<OTraverseProjectionItem>	projections
protected List<OResult>	results
protected Set<ORID>	traversed
protected final OWhereClause	whileClause

Fields inherited from class com.orientechnologies.orient.core.sql.executor.AbstractExecutionStep

ctx, next, prev, profilingEnabled, timedOut

Constructor Summary

Constructors

Constructor	Description
AbstractTraverseStep(List<OTraverseProjectionItem> projections, OWhereClause whileClause, OInteger maxDepth, OCommandContext ctx, boolean profilingEnabled)

Method Summary

Modifier and Type	Method	Description
protected abstract void	fetchNextEntryPoints(OCommandContext ctx, int nRecords)
protected abstract void	fetchNextResults(OCommandContext ctx, int nRecords)
long	getCost()	returns the absolute cost (in nanoseconds) of the execution of this step
protected boolean	isFinished()
OResultSet	syncPull(OCommandContext ctx, int nRecords)
String	toString()

Methods inherited from class com.orientechnologies.orient.core.sql.executor.AbstractExecutionStep

close, getContext, getCostFormatted, getNext, getPrev, isProfilingEnabled, sendTimeout, setNext, setPrevious, setProfilingEnabled

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.orientechnologies.orient.core.sql.executor.OExecutionStep

toResult

Methods inherited from interface com.orientechnologies.orient.core.sql.executor.OExecutionStepInternal

canBeCached, copy, deserialize, getDescription, getName, getSubExecutionPlans, getSubSteps, getTargetNode, getType, prettyPrint, reset, serialize

Field Details

whileClause

protected final OWhereClause whileClause

projections

protected final List<OTraverseProjectionItem> projections

maxDepth

protected final OInteger maxDepth

entryPoints

protected List<OResult> entryPoints

results

protected List<OResult> results

traversed

protected Set<ORID> traversed

Constructor Details

AbstractTraverseStep

public AbstractTraverseStep(List<OTraverseProjectionItem> projections,
 OWhereClause whileClause,
 OInteger maxDepth,
 OCommandContext ctx,
 boolean profilingEnabled)

Method Details

syncPull

public OResultSet syncPull(OCommandContext ctx,
 int nRecords)
                    throws OTimeoutException

Throws:

OTimeoutException

fetchNextEntryPoints

protected abstract void fetchNextEntryPoints(OCommandContext ctx,
 int nRecords)

fetchNextResults

protected abstract void fetchNextResults(OCommandContext ctx,
 int nRecords)

isFinished

protected boolean isFinished()

getCost

public long getCost()

Description copied from interface: OExecutionStep

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

Returns:

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

toString

public String toString()

Overrides:

toString in class Object