de.fzi.power.interpreter.calculator.expressionoasis.helper

Class ExpressionOasisHelper

java.lang.Object

de.fzi.power.interpreter.calculator.expressionoasis.helper.ExpressionOasisHelper

public final class ExpressionOasisHelper
extends Object

Method Summary

Modifier and Type	Method and Description
static void	assertCorrectExpressionContext(ExpressionContext expressionContext, Class<?> assertingClass) Asserts that the given expression context instance is a CustomExpressionContext instance.
static boolean	hasCompositeType(ValueObject valueObject) Gets whether the given value object has a composite type.
static boolean	hasNumericType(ValueObject valueObject) Gets whether the given value object has a numeric type. This method call is equivalent to (in case no exception occurs) calling isNumericType(valueObject.getValueType()).
static boolean	isNumericType(Type type) Gets whether the given type is numeric.
static boolean	typesEqual(Type first, Type second) Convenience method to check whether the given two type instances are equal.

Methods inherited from class java.lang.Object

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

Method Detail

hasNumericType

public static boolean hasNumericType(ValueObject valueObject)

Gets whether the given value object has a numeric type.
This method call is equivalent to (in case no exception occurs) calling isNumericType(valueObject.getValueType()).

Parameters:

valueObject - A ValueObject.

Returns:

true if the given value object has a numeric type, false otherwise.

Throws:

NullPointerException - In case the passed value object is null.

See Also:

isNumericType(Type)

isNumericType

public static boolean isNumericType(Type type)

Gets whether the given type is numeric.

Parameters:

type - The Type instance to check

Returns:

true if the passed type is equal to Type#Double, Type.INTEGER , Type.LONG, Type.FLOAT, Type.SHORT or Type.BYTE.

Throws:

NullPointerException - In case the passed type is null.

typesEqual

public static boolean typesEqual(Type first,
                                 Type second)

Convenience method to check whether the given two type instances are equal.

Parameters:

first - A Type instance.

second - A Type instance.

Returns:

true if both type instances are equal, otherwise false.

Throws:

NullPointerException - In case either of the passed types is null.

hasCompositeType

public static boolean hasCompositeType(ValueObject valueObject)

Gets whether the given value object has a composite type.

Parameters:

valueObject - A ValueObject instance.

Returns:

true iff the given value object is a MeasuredValuesCompositeValueObject instance, false otherwise.

Throws:

NullPointerException - In case the passed value object is null.

assertCorrectExpressionContext

public static void assertCorrectExpressionContext(ExpressionContext expressionContext,
                                                  Class<?> assertingClass)

Asserts that the given expression context instance is a CustomExpressionContext instance.

Parameters:

expressionContext - The ExpressionContext to check.

assertingClass - The Class of the object which is calling this method.
This parameter is only used to construct a message if the passed expression context has the wrong type.

Throws:

AssertionError - In case the given expression context is not a CustomExpressionContext instance.