java.lang.Object
- org.kie.dmn.feel.util.EvalHelper

```
public class EvalHelper
extends Object
```

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class EvalHelper.PropertyValueResult

Constructor Summary

Constructors
Constructor Description

EvalHelper()

Method Summary

All Methods Static Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static void`	`clearGenericAccessorCache()`
`static Object`	`coerceNumber(Object value)`
`static Boolean`	`compare(Object left, Object right, org.kie.dmn.feel.lang.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 EvalHelper.PropertyValueResult`	`getDefinedValue(Object current, String property)`
`static Method`	`getGenericAccessor(Class<?> clazz, String field)`	FEEL annotated or else Java accessor.
`static Object`	`getValue(Object current, String property)`	Deprecated. this method cannot distinguish null because: 1. property undefined for current, 2. an error, 3. a properly defined property value valorized to null.
`static Boolean`	`isEqual(Object left, Object right, org.kie.dmn.feel.lang.EvaluationContext ctx)`	Compares left and right for equality applying FEEL semantics to specific data types
`static Boolean`	`isEqualDateTimeInSemanticD(TemporalAccessor left, TemporalAccessor right)`	DMNv1.2 Table 48: Specific semantics of equality DMNv1.3 Table 71: Semantic of date and time functions
`static Boolean`	`isEqualTimeInSemanticD(TemporalAccessor left, TemporalAccessor right)`	DMNv1.2 Table 48: Specific semantics of equality DMNv1.3 Table 71: Semantic of date and time functions
`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

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)

getDefinedValue

public static EvalHelper.PropertyValueResult getDefinedValue(Object current,
                                                             String property)

getValue
```
public static Object getValue(Object current,
                              String property)
```
Deprecated.
this method cannot distinguish null because: 1. property undefined for current, 2. an error, 3. a properly defined property value valorized to null.

getDefinedValue(Object, String) method instead.

getGenericAccessor

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

FEEL annotated or else Java accessor.

Parameters:: clazz -; field -
Returns:

clearGenericAccessorCache

@GwtIncompatible
public static void clearGenericAccessorCache()

getAccessor

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

JavaBean -spec compliant accessor.

Parameters:: clazz -; field -
Returns:

propertyFromAccessor

@GwtIncompatible
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,
                              org.kie.dmn.feel.lang.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,
                              org.kie.dmn.feel.lang.EvaluationContext ctx)

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

Parameters:: left -; right -; ctx -
Returns:

isEqualDateTimeInSemanticD

public static Boolean isEqualDateTimeInSemanticD(TemporalAccessor left,
                                                 TemporalAccessor right)

DMNv1.2 Table 48: Specific semantics of equality DMNv1.3 Table 71: Semantic of date and time functions

isEqualTimeInSemanticD

public static Boolean isEqualTimeInSemanticD(TemporalAccessor left,
                                             TemporalAccessor right)