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

Class CheckSafeDeleteStep

java.lang.Object

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

com.orientechnologies.orient.core.sql.executor.CheckSafeDeleteStep

All Implemented Interfaces:

OExecutionStep, OExecutionStepInternal

public class CheckSafeDeleteStep
extends AbstractExecutionStep

Checks if a record can be safely deleted (throws OCommandExecutionException in case). A record cannot be safely deleted if it's a vertex or an edge (it requires additional operations).

The result set returned by syncPull() throws an OCommandExecutionException as soon as it finds a record that cannot be safely deleted (eg. a vertex or an edge)

This step is used used in DELETE statement to make sure that you are not deleting vertices or edges without passing for an explicit DELETE VERTEX/EDGE

Author:

Luigi Dell'Aquila (l.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
CheckSafeDeleteStep(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

CheckSafeDeleteStep

public CheckSafeDeleteStep(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