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

Class CopyRecordContentBeforeUpdateStep

java.lang.Object

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

com.orientechnologies.orient.core.sql.executor.CopyRecordContentBeforeUpdateStep

All Implemented Interfaces:

OExecutionStepInternal

public class CopyRecordContentBeforeUpdateStep
extends AbstractExecutionStep

Reads an upstream result set and returns a new result set that contains copies of the original OResult instances

This is mainly used from statements that need to copy of the original data before modifying it, eg. UPDATE ... RETURN BEFORE

Author:

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

Field Summary

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

prev

Constructor Summary

Constructors

Constructor	Description
CopyRecordContentBeforeUpdateStep()

Method Summary

Modifier and Type	Method	Description
OExecutionStream	internalStart(OCommandContext ctx)
String	prettyPrint(OPrintContext ctx)

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

canBeCached, copy, deserialize, getName, getSubExecutionPlans, getSubSteps, getTargetNode, getType, serialize, serializeToResult, toResult, toResult

Constructor Details

CopyRecordContentBeforeUpdateStep

public CopyRecordContentBeforeUpdateStep()

Method Details

internalStart

public OExecutionStream internalStart(OCommandContext ctx)
                               throws OTimeoutException

Specified by:

internalStart in class AbstractExecutionStep

Throws:

OTimeoutException

prettyPrint

public String prettyPrint(OPrintContext ctx)