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:

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<OExecutionStepInternal>	subSteps

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

prev

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
boolean	canBeCached()
OExecutionStepInternal	copy(OCommandContext ctx)
void	deserialize(OResult fromResult)
List<OExecutionStepInternal>	getSubSteps()
OExecutionStream	internalStart(OCommandContext ctx)
protected OClass	loadClassFromSchema(String className, OCommandContext ctx)
String	prettyPrint(OPrintContext ctx)
OResult	serialize()

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

getPrev, setPrevious, start

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.OExecutionStepInternal

getName, getSubExecutionPlans, getTargetNode, getType, serializeToResult, toResult, toResult

Field Details

className

protected String className

orderByRidAsc

protected boolean orderByRidAsc

orderByRidDesc

protected boolean orderByRidDesc

subSteps

protected List<OExecutionStepInternal> subSteps

Constructor Details

FetchFromClassExecutionStep

protected FetchFromClassExecutionStep()

FetchFromClassExecutionStep

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

FetchFromClassExecutionStep

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

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)

internalStart

public OExecutionStream internalStart(OCommandContext ctx)
                               throws OTimeoutException

Specified by:

internalStart in class AbstractExecutionStep

Throws:

OTimeoutException

prettyPrint

public String prettyPrint(OPrintContext ctx)

serialize

public OResult serialize()

deserialize

public void deserialize(OResult fromResult)

getSubSteps

public List<OExecutionStepInternal> getSubSteps()

canBeCached

public boolean canBeCached()

copy

public OExecutionStepInternal copy(OCommandContext ctx)