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

Class CheckClassTypeStep

java.lang.Object

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

com.orientechnologies.orient.core.sql.executor.CheckClassTypeStep

All Implemented Interfaces:

OExecutionStepInternal

public class CheckClassTypeStep
extends AbstractExecutionStep

This step is used just as a gate check for classes (eg. for CREATE VERTEX to make sure that the passed class is a vertex class).

It accepts two values: a target class and a parent class. If the two classes are the same or if the parent class is indeed a parent class of the target 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

prev

Constructor Summary

Constructors

Constructor	Description
CheckClassTypeStep(String targetClass, String parentClass)

Method Summary

Modifier and Type	Method	Description
boolean	canBeCached()
OExecutionStepInternal	copy(OCommandContext ctx)
OExecutionStream	internalStart(OCommandContext context)
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

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

Constructor Details

CheckClassTypeStep

public CheckClassTypeStep(String targetClass,
 String parentClass)

Parameters:

targetClass - a class to be checked

parentClass - a class that is supposed to be the same or a parent class of the target class

Method Details

internalStart

public OExecutionStream internalStart(OCommandContext context)
                               throws OTimeoutException

Specified by:

internalStart in class AbstractExecutionStep

Throws:

OTimeoutException

prettyPrint

public String prettyPrint(OPrintContext ctx)

copy

public OExecutionStepInternal copy(OCommandContext ctx)

canBeCached

public boolean canBeCached()