NitrogenRule (cdk 2.9 API)

java.lang.Object
- org.openscience.cdk.formula.rules.NitrogenRule

All Implemented Interfaces:

IRule
```
public class NitrogenRule
extends Object
implements IRule
```
This class validate if the rule of nitrogen is kept.
If a compound has an odd number of nitrogen atoms, then the molecular ion (the [M]+) will have an odd mass and the value for m/e will be odd.

If a compound has no nitrogen atom or an even number of nitrogen atoms, then the m/e value of [M]+ will be even.

Table 1: Parameters set by this rule.
Name Default Description

charge 0.0 The Nitrogen rule of MolecularFormula

Author:

miguelrojasch

Source code:
main

Belongs to CDK module:
formula

Created on:

2008-06-11

Constructor Summary

Constructors
Constructor Description

NitrogenRule()
Constructor for the NitrogenRule object.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object[]`	`getParameters()`	Gets the parameters attribute of the NitrogenRule object.
`void`	`setParameters(Object[] params)`	Sets the parameters attribute of the NitrogenRule object.
`double`	`validate(IMolecularFormula formula)`	Validate the nitrogen rule of this IMolecularFormula.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - NitrogenRule
```
public NitrogenRule()
```
    Constructor for the NitrogenRule object.
- Method Detail
  - setParameters
```
public void setParameters(Object[] params)
                   throws CDKException
```
    Sets the parameters attribute of the NitrogenRule object.
    
    Specified by:
    
    setParameters in interface IRule
    
    Parameters:
    
    params - The new parameters value
    
    Throws:
    
    CDKException - Description of the Exception
    
    See Also:
    
    getParameters()
  - getParameters
```
public Object[] getParameters()
```
    Gets the parameters attribute of the NitrogenRule object.
    
    Specified by:
    
    getParameters in interface IRule
    
    Returns:
    
    The parameters value
    
    See Also:
    
    setParameters(java.lang.Object[])
  - validate
```
public double validate(IMolecularFormula formula)
                throws CDKException
```
    Validate the nitrogen rule of this IMolecularFormula.
    
    Specified by:
    
    validate in interface IRule
    
    Parameters:
    
    formula - Parameter is the IMolecularFormula
    
    Returns:
    
    A double value meaning 1.0 True, 0.0 False
    
    Throws:
    
    CDKException - if an error occurs during the validation. See documentation for individual rules