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

Class FetchFromClassExecutionStep

java.lang.Object

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

com.orientechnologies.orient.core.sql.executor.FetchFromClassExecutionStep

All Implemented Interfaces:

OExecutionStep, OExecutionStepInternal

Direct Known Subclasses:

FetchFromViewExecutionStep

public class FetchFromClassExecutionStep
extends AbstractExecutionStep

Created by luigidellaquila on 08/07/16.

Field Summary

Fields

Modifier and Type	Field	Description
protected String	className
protected boolean	orderByRidAsc
protected boolean	orderByRidDesc
protected List<OExecutionStep>	subSteps

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

ctx, next, prev, profilingEnabled, timedOut

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	FetchFromClassExecutionStep(OCommandContext ctx, boolean profilingEnabled)
	FetchFromClassExecutionStep(String className, Set<String> clusters, OCommandContext ctx, Boolean ridOrder, boolean profilingEnabled)
	FetchFromClassExecutionStep(String className, Set<String> clusters, QueryPlanningInfo planningInfo, OCommandContext ctx, Boolean ridOrder, boolean profilingEnabled)	iterates over a class and its subclasses

Method Summary

Modifier and Type	Method	Description
boolean	canBeCached()
void	close()
OExecutionStep	copy(OCommandContext ctx)
void	deserialize(OResult fromResult)
long	getCost()	returns the absolute cost (in nanoseconds) of the execution of this step
List<OExecutionStep>	getSubSteps()
protected OClass	loadClassFromSchema(String className, OCommandContext ctx)
String	prettyPrint(int depth, int indent)
void	sendTimeout()
OResult	serialize()
OResultSet	syncPull(OCommandContext ctx, int nRecords)

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

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

Methods inherited from class java.lang.Object

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

getDescription, getName, getSubExecutionPlans, getTargetNode, getType, reset

Field Details

className

protected String className

orderByRidAsc

protected boolean orderByRidAsc

orderByRidDesc

protected boolean orderByRidDesc

subSteps

protected List<OExecutionStep> subSteps

Constructor Details

FetchFromClassExecutionStep

protected FetchFromClassExecutionStep(OCommandContext ctx,
 boolean profilingEnabled)

FetchFromClassExecutionStep

public FetchFromClassExecutionStep(String className,
 Set<String> clusters,
 OCommandContext ctx,
 Boolean ridOrder,
 boolean profilingEnabled)

FetchFromClassExecutionStep

public FetchFromClassExecutionStep(String className,
 Set<String> clusters,
 QueryPlanningInfo planningInfo,
 OCommandContext ctx,
 Boolean ridOrder,
 boolean profilingEnabled)

iterates over a class and its subclasses

Parameters:

className - the class name

clusters - if present (it can be null), filter by only these clusters

ctx - the query context

ridOrder - true to sort by RID asc, false to sort by RID desc, null for no sort.

Method Details

loadClassFromSchema

protected OClass loadClassFromSchema(String className,
 OCommandContext ctx)

syncPull

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

Throws:

OTimeoutException

sendTimeout

public void sendTimeout()

Specified by:

sendTimeout in interface OExecutionStepInternal

Overrides:

sendTimeout in class AbstractExecutionStep

close

public void close()

Specified by:

close in interface OExecutionStepInternal

Overrides:

close in class AbstractExecutionStep

prettyPrint

public String prettyPrint(int depth,
 int indent)

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

serialize

public OResult serialize()

deserialize

public void deserialize(OResult fromResult)

getSubSteps

public List<OExecutionStep> getSubSteps()

canBeCached

public boolean canBeCached()

copy

public OExecutionStep copy(OCommandContext ctx)