org.eclipse.viatra.query.runtime.localsearch.operations.check

Class CheckConstant

java.lang.Object

org.eclipse.viatra.query.runtime.localsearch.operations.check.CheckOperation

org.eclipse.viatra.query.runtime.localsearch.operations.check.CheckConstant

All Implemented Interfaces:

ISearchOperation

public class CheckConstant
extends CheckOperation

This operation handles constants in search plans by checking if a variable is bound to a certain constant value. Such operations should be executed as early as possible during plan execution.

Constructor Summary

Constructors

Constructor and Description
CheckConstant(int position, java.lang.Object value)

Method Summary

Modifier and Type	Method and Description
protected boolean	check(MatchingFrame frame) Executes the checking operation
java.util.List<java.lang.Integer>	getVariablePositions()
java.lang.String	toString()

Methods inherited from class org.eclipse.viatra.query.runtime.localsearch.operations.check.CheckOperation

execute, onBacktrack, onInitialize

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

CheckConstant

public CheckConstant(int position,
                     java.lang.Object value)

Method Detail

check

protected boolean check(MatchingFrame frame)
                 throws LocalSearchException

Description copied from class: CheckOperation

Executes the checking operation

Specified by:

check in class CheckOperation

Returns:

Throws:

LocalSearchException

getVariablePositions

public java.util.List<java.lang.Integer> getVariablePositions()

Returns:

the ordered list of the variable numbers that are affected by the search operation

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object