org.kie.dmn.feel.util

Class EvalHelper

java.lang.Object

org.kie.dmn.feel.util.EvalHelper

public class EvalHelper
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor and Description
EvalHelper()

Method Summary

Modifier and Type	Method and Description
static Object	coerceNumber(Object value)
static Boolean	compare(Object left, Object right, EvaluationContext ctx, BiPredicate<Comparable,Comparable> op) Compares left and right operands using the given predicate and returns TRUE/FALSE accordingly
static Method	getAccessor(Class<?> clazz, String field) JavaBean -spec compliant accessor.
static BigDecimal	getBigDecimalOrNull(Object value)
static Boolean	getBooleanOrNull(Object value)
static Method	getGenericAccessor(Class<?> clazz, String field) FEEL annotated or else Java accessor.
static Object	getValue(Object current, String property)
static Boolean	isEqual(Object left, Object right, EvaluationContext ctx) Compares left and right for equality applying FEEL semantics to specific data types
static String	lcFirst(String name)
static String	normalizeVariableName(String name)
static Optional<String>	propertyFromAccessor(Method accessor) Inverse of getAccessor(Class, String)
static String	ucFirst(String name)
static String	unescapeString(String text)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.slf4j.Logger LOG

Constructor Detail

EvalHelper

public EvalHelper()

Method Detail

normalizeVariableName

public static String normalizeVariableName(String name)

getBigDecimalOrNull

public static BigDecimal getBigDecimalOrNull(Object value)

coerceNumber

public static Object coerceNumber(Object value)

getBooleanOrNull

public static Boolean getBooleanOrNull(Object value)

unescapeString

public static String unescapeString(String text)

getValue

public static Object getValue(Object current,
                              String property)
                       throws IllegalAccessException,
                              InvocationTargetException

Throws:

IllegalAccessException

InvocationTargetException

getGenericAccessor

public static Method getGenericAccessor(Class<?> clazz,
                                        String field)

FEEL annotated or else Java accessor.

Parameters:

clazz -

field -

Returns:

getAccessor

public static Method getAccessor(Class<?> clazz,
                                 String field)

JavaBean -spec compliant accessor.

Parameters:

clazz -

field -

Returns:

propertyFromAccessor

public static Optional<String> propertyFromAccessor(Method accessor)

Inverse of getAccessor(Class, String)

ucFirst

public static String ucFirst(String name)

lcFirst

public static String lcFirst(String name)

compare

public static Boolean compare(Object left,
                              Object right,
                              EvaluationContext ctx,
                              BiPredicate<Comparable,Comparable> op)

Compares left and right operands using the given predicate and returns TRUE/FALSE accordingly

Parameters:

left -

right -

ctx -

op -

Returns:

isEqual

public static Boolean isEqual(Object left,
                              Object right,
                              EvaluationContext ctx)

Compares left and right for equality applying FEEL semantics to specific data types

Parameters:

left -

right -

ctx -

Returns: