How to use

org.kie.dmn.feel.runtime.functions.ParameterName

constructor

public FEELFnResult<Boolean> invoke(@ParameterName( "list" ) Boolean single) {
  if( single == null ) {
    single = Boolean.FALSE;
  }
  return FEELFnResult.ofResult( single );
}

public FEELFnResult<Boolean> invoke(@ParameterName( "list" ) Boolean single) {
  if( single == null ) {
    return FEELFnResult.ofResult( true );
  }
  return FEELFnResult.ofResult( Boolean.TRUE.equals( single ) );
}

public FEELFnResult<Object> invoke(@ParameterName("c") Object[] list) {
  if ( list == null || list.length == 0 ) {
    return FEELFnResult.ofResult( null );
  }
  
  return invoke( Arrays.asList( list ) );
}

  public FEELFnResult<BigDecimal> invoke(@ParameterName("n") Object[] list) {
    if ( list == null ) {
      return FEELFnResult.ofResult( null );
    }

    return invoke( Arrays.asList( list ) );
  }
}

  public FEELFnResult<String> invoke(@ParameterName("value") Object val) {
    if ( val == null ) {
      return FEELFnResult.ofResult( "null" );
    } else {
      return FEELFnResult.ofResult(TypeUtil.formatValue(val, true) );
    }
  }
}

public FEELFnResult<String> invoke(@ParameterName("from") Object val) {
  if ( val == null ) {
    return FEELFnResult.ofResult( null );
  } else {
    return FEELFnResult.ofResult( TypeUtil.formatValue(val, false) );
  }
}

  public FEELFnResult<Boolean> invoke(@ParameterName( "b" ) Object[] list) {
    if ( list == null ) {
      return FEELFnResult.ofResult( false );
    }
    
    return invoke( Arrays.asList( list ) );
  }
}

public FEELFnResult<Boolean> invoke(@ParameterName("list") List list, @ParameterName("element") Object element) {
  if ( list == null ) {
    return FEELFnResult.ofError(new InvalidParametersEvent(Severity.ERROR, "list", "cannot be null"));
  } else {
    return FEELFnResult.ofResult( list.contains( element ) );
  }
}

  public FEELFnResult<BigDecimal> invoke(@ParameterName("n") Object[] list) {
    if ( list == null ) { 
      return FEELFnResult.ofResult(null);
    }
    
    return invoke( Arrays.asList( list ) );
  }
}

  public FEELFnResult<String> invoke(@ParameterName( "mask" ) String mask, @ParameterName("p") Object[] params) {
    if ( mask == null ) {
      return FEELFnResult.ofError(new InvalidParametersEvent(Severity.ERROR, "mask", "cannot be null"));
    } else {
      return FEELFnResult.ofResult( String.format( mask, params ) );
    }
  }
}

  public FEELFnResult<BigDecimal> invoke(@ParameterName("n") Object[] list) {
    if ( list == null ) {
      return FEELFnResult.ofResult(null);
    }

    return invoke( Arrays.asList( list ) );
  }
}

  public FEELFnResult<BigDecimal> invoke(@ParameterName( "n" ) Object[] list) {
    if ( list == null ) { 
      return FEELFnResult.ofResult( null );
    }
    return invoke( Arrays.asList( list ) );
  }
}

public FEELFnResult<Object> invoke(@ParameterName("c") Object[] list) {
  if ( list == null || list.length == 0 ) {
    return FEELFnResult.ofResult( null );
  }
  
  return invoke( Arrays.asList( list ) );
}

  public FEELFnResult<List> invoke(@ParameterName("n") Object[] list) {
    if ( list == null ) {
      return FEELFnResult.ofResult( null );
    }
    return invoke( Arrays.asList( list ) );
  }
}

  public FEELFnResult<Boolean> invoke(@ParameterName( "b" ) Object[] list) {
    if ( list == null ) {
      return FEELFnResult.ofResult( true );
    }
    
    return invoke( Arrays.asList( list ) );
  }
}

  public FEELFnResult<BigDecimal> invoke(@ParameterName( "number" ) BigDecimal number) {
    if ( number == null ) {
      return FEELFnResult.ofError( new InvalidParametersEvent( FEELEvent.Severity.ERROR, "number", "cannot be null" ) );
    }
    return FEELFnResult.ofResult( new BigDecimal( Math.exp( number.doubleValue() ), MathContext.DECIMAL128 ) );
  }
}

  public FEELFnResult<List<Object>> invoke(@ParameterName("list") List list) {
    if ( list == null ) {
      return FEELFnResult.ofError(new InvalidParametersEvent(Severity.ERROR, "list", "cannot be null"));
    }
    // spec requires us to return a new list
    final List<Object> result = new ArrayList<>( list );
    Collections.reverse( result );
    return FEELFnResult.ofResult( result );
  }
}

public FEELFnResult<BigDecimal> invoke(@ParameterName( "list" ) List list) {
  if ( list == null ) {
    return FEELFnResult.ofError(new InvalidParametersEvent(Severity.ERROR, "list", "cannot be null"));
  }
  
  return FEELFnResult.ofResult( BigDecimal.valueOf( list.size() ) );
}

  public FEELFnResult<BigDecimal> invoke(@ParameterName( "n" ) BigDecimal n) {
    if ( n == null ) {
      return FEELFnResult.ofError(new InvalidParametersEvent(Severity.ERROR, "n", "cannot be null"));
    }
    return FEELFnResult.ofResult( n.setScale( 0, BigDecimal.ROUND_FLOOR ) );
  }
}

  public FEELFnResult<BigDecimal> invoke(@ParameterName( "n" ) BigDecimal n) {
    if ( n == null ) {
      return FEELFnResult.ofError(new InvalidParametersEvent(Severity.ERROR, "n", "cannot be null"));
    }
    return FEELFnResult.ofResult( n.setScale( 0, BigDecimal.ROUND_CEILING ) );
  }
}