Package org.palladiosimulator.solver.visitors

Class ExpressionHelper

  • public class ExpressionHelper
extends Object

    • Constructor Detail

      • ExpressionHelper

        public ExpressionHelper()

    • Method Detail

      • parseToExpression

        public static de.uka.ipd.sdq.stoex.Expression parseToExpression​(String specification)
        Parameters:
        specification -

      • getSolvedExpressionAsString

        public static String getSolvedExpressionAsString​(String specification,
                                                 ContextWrapper ctxWrp)

      • transformExpressionToTypedExpression

        protected static de.uka.ipd.sdq.stoex.Expression transformExpressionToTypedExpression​(de.uka.ipd.sdq.stoex.Expression expression)
        This method transforms an expression containing generic samples into an expression containing concrete samples if possible. This is necessary in order to serialize the expression. For some reason, the probability function logic decided to solely work with generic samples (SampleImpl) instead of the concrete subtypes. Unfortunately, the serialize does not know how to serialize these generic types. Therefore, this method tries to avoid this error by providing a copy of the given expression that only contains concrete sample types. This is only possible if all values of a PMF are of the same type. Mixed value types are not supported by this method as well as the serializer.
        Parameters:
        expression - The expression to transform.
        Returns:
        An adjusted copy of the expression.

      • transformPMFToTypedPMF

        protected static void transformPMFToTypedPMF​(de.uka.ipd.sdq.probfunction.ProbabilityMassFunction<Object> pmf)

      • allSamplesHaveBooleanStringLiterals

        protected static boolean allSamplesHaveBooleanStringLiterals​(Collection<de.uka.ipd.sdq.probfunction.Sample<Object>> samples)

      • allSamplesHaveSameValueType

        protected static boolean allSamplesHaveSameValueType​(Collection<de.uka.ipd.sdq.probfunction.Sample<Object>> samples)

      • transformToNonGenericModelSample

        protected static de.uka.ipd.sdq.probfunction.Sample<Object> transformToNonGenericModelSample​(de.uka.ipd.sdq.probfunction.Sample<? extends Object> sample)

      • getSolvedExpression

        public static de.uka.ipd.sdq.stoex.Expression getSolvedExpression​(String specification,
                                                                  ContextWrapper ctxWrp)

      • getSolvedExpression

        public static de.uka.ipd.sdq.stoex.Expression getSolvedExpression​(de.uka.ipd.sdq.stoex.Expression expr,
                                                                  ContextWrapper ctxWrp)

      • getTypeAnnotation

        public static HashMap<de.uka.ipd.sdq.stoex.Expression,​de.uka.ipd.sdq.stoex.analyser.visitors.TypeEnum> getTypeAnnotation​(de.uka.ipd.sdq.stoex.Expression expr)

      • meanValue

        public static double meanValue​(de.uka.ipd.sdq.stoex.Expression expression)
                        throws IllegalArgumentException
        calculated the mean value for a solved expression
        Parameters:
        expression -
        Returns:
        Throws:
        IllegalArgumentException - if the passed expression has not been solved before.

      • getMeanValue

        public static double getMeanValue​(org.palladiosimulator.pcm.core.PCMRandomVariable variable)