org.eclipse.incquery.runtime.localsearch.operations.extend

Class ExpressionEval

java.lang.Object

org.eclipse.incquery.runtime.localsearch.operations.extend.ExtendOperation<java.lang.Object>

org.eclipse.incquery.runtime.localsearch.operations.extend.ExpressionEval

All Implemented Interfaces:

ISearchOperation

public class ExpressionEval
extends ExtendOperation<java.lang.Object>

Calculates the result of an expression and stores it inside a variable for future reference.

Author:

Zoltan Ujhelyi

Constructor Summary

Constructors

Constructor and Description
ExpressionEval(IExpressionEvaluator evaluator, java.util.Map<java.lang.String,java.lang.Integer> nameMap, int position)

Method Summary

Modifier and Type	Method and Description
java.util.List<java.lang.Integer>	getVariablePositions()
void	onInitialize(MatchingFrame frame, ISearchContext context) During the execution of the corresponding plan, the onInitialize callback is evaluated before the execution of the operation may begin.
java.lang.String	toString()

Methods inherited from class org.eclipse.incquery.runtime.localsearch.operations.extend.ExtendOperation

execute, onBacktrack

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ExpressionEval

public ExpressionEval(IExpressionEvaluator evaluator,
                      java.util.Map<java.lang.String,java.lang.Integer> nameMap,
                      int position)

Method Detail

onInitialize

public void onInitialize(MatchingFrame frame,
                         ISearchContext context)
                  throws LocalSearchException

Description copied from interface: ISearchOperation

During the execution of the corresponding plan, the onInitialize callback is evaluated before the execution of the operation may begin. Operations may use this method to initialize its internal data structures.

Throws:

LocalSearchException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getVariablePositions

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

Returns:

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