Package com.arcadedb.query.sql.executor

Class CheckClusterTypeStep

java.lang.Object

com.arcadedb.query.sql.executor.AbstractExecutionStep

com.arcadedb.query.sql.executor.CheckClusterTypeStep

All Implemented Interfaces:

ExecutionStep, ExecutionStepInternal

public class CheckClusterTypeStep
extends AbstractExecutionStep

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

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

Author:

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

Field Summary

Fields inherited from class com.arcadedb.query.sql.executor.AbstractExecutionStep

ctx, next, prev, profilingEnabled, timedOut

Constructor Summary

Constructors

Constructor	Description
CheckClusterTypeStep(Bucket targetCluster, String typez, CommandContext ctx, boolean profilingEnabled)
CheckClusterTypeStep(String targetClusterName, String typez, CommandContext 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)
ResultSet	syncPull(CommandContext ctx, int nRecords)

Methods inherited from class com.arcadedb.query.sql.executor.AbstractExecutionStep

close, getContext, getCostFormatted, getNext, getPrev, isProfilingEnabled, isTimedOut, 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.arcadedb.query.sql.executor.ExecutionStep

toResult

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

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

Constructor Detail

CheckClusterTypeStep

public CheckClusterTypeStep(String targetClusterName,
                            String typez,
                            CommandContext ctx,
                            boolean profilingEnabled)

CheckClusterTypeStep

public CheckClusterTypeStep(Bucket targetCluster,
                            String typez,
                            CommandContext ctx,
                            boolean profilingEnabled)

Method Detail

syncPull

public ResultSet syncPull(CommandContext ctx,
                          int nRecords)
                   throws TimeoutException

Throws:

TimeoutException

prettyPrint

public String prettyPrint(int depth,
                          int indent)

getCost

public long getCost()

Description copied from interface: ExecutionStep

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