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

Class CheckClusterTypeStep

java.lang.Object

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

com.orientechnologies.orient.core.sql.executor.CheckClusterTypeStep

All Implemented Interfaces:

OExecutionStep, OExecutionStepInternal

public class CheckClusterTypeStep
extends AbstractExecutionStep

This step is used just as a gate check to verify that a cluster belongs to a class.

It accepts two values: a target cluster (name or OCluster) and a class. If the cluster belongs to the class, then the syncPool() returns an empty result set, otherwise it throws an OCommandExecutionException

Author:

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

Field Summary

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

ctx, next, prev, profilingEnabled, timedOut

Constructor Summary

Constructors

Constructor	Description
CheckClusterTypeStep(OCluster targetCluster, String clazz, OCommandContext ctx, boolean profilingEnabled)
CheckClusterTypeStep(String targetClusterName, String clazz, OCommandContext ctx, boolean profilingEnabled)

Method Summary

Modifier and Type	Method	Description
long	getCost()	returns the absolute cost (in nanoseconds) of the execution of this step
String	prettyPrint(int depth, int indent)
OResultSet	syncPull(OCommandContext ctx, int nRecords)

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, 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

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

Constructor Details

CheckClusterTypeStep

public CheckClusterTypeStep(String targetClusterName,
 String clazz,
 OCommandContext ctx,
 boolean profilingEnabled)

CheckClusterTypeStep

public CheckClusterTypeStep(OCluster targetCluster,
 String clazz,
 OCommandContext ctx,
 boolean profilingEnabled)

Method Details

syncPull

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

Throws:

OTimeoutException

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