IDCreator (cdk 2.9 API)

java.lang.Object
- org.openscience.cdk.tools.IDCreator

```
public abstract class IDCreator
extends Object
```
Class that provides methods to give unique IDs to ChemObjects. Methods are implemented for Atom, Bond, AtomContainer, AtomContainerSet and Reaction. It will only create missing IDs. If you want to create new IDs for all ChemObjects, you need to delete them first.

Author:

Egon Willighagen

Source code:
main

Belongs to CDK module:
standard

Keywords:

id, creation

Created on:

2003-04-01

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`OBJECT_UNIQUE_POLICY`	New ID generation policy - to generate IDs unique only in a molecule
`static int`	`SET_UNIQUE_POLICY`	Old ID generation policy - to generate IDs unique over the entire set

Constructor Summary

Constructors
Constructor Description

IDCreator()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`createIDs(IChemObject chemObject)`	Labels the Atom's and Bond's in the AtomContainer using the a1, a2, b1, b2 scheme often used in CML.
`static void`	`setIDPolicy(int policy)`	Alters the policy of ID generation.

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

- Field Detail
  - SET_UNIQUE_POLICY
```
public static final int SET_UNIQUE_POLICY
```
    Old ID generation policy - to generate IDs unique over the entire set
    
    See Also:
    
    Constant Field Values
  - OBJECT_UNIQUE_POLICY
```
public static final int OBJECT_UNIQUE_POLICY
```
    New ID generation policy - to generate IDs unique only in a molecule
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - IDCreator
```
public IDCreator()
```
- Method Detail
  - setIDPolicy
```
public static void setIDPolicy(int policy)
```
    Alters the policy of ID generation. The IDCreator should in any case preserve the already existing IDs therefore if one of objects already has an ID set, this ID will be skipped in all the cases when attempting to generate a new ID value
    
    Parameters:
    
    policy - new policy to be used
    
    See Also:
    
    OBJECT_UNIQUE_POLICY, SET_UNIQUE_POLICY
  - createIDs
```
public static void createIDs(IChemObject chemObject)
```
    Labels the Atom's and Bond's in the AtomContainer using the a1, a2, b1, b2 scheme often used in CML. Supports IAtomContainer, IAtomContainerSet, IChemFile, IChemModel, IChemSequence, IReaction, IReactionSet, and derived interfaces.
    
    Parameters:
    
    chemObject - IChemObject to create IDs for.