ConnectivityChecker (cdk 2.9 API)

java.lang.Object
- org.openscience.cdk.graph.ConnectivityChecker

```
public class ConnectivityChecker
extends Object
```
Tool class for checking whether the (sub)structure in an AtomContainer is connected. To check whether an AtomContainer is connected this code can be used:
```
  boolean isConnected = ConnectivityChecker.isConnected(atomContainer);
 
```
A disconnected AtomContainer can be fragmented into connected fragments by using code like:
```
   MoleculeSet fragments = ConnectivityChecker.partitionIntoMolecules(disconnectedContainer);
   int fragmentCount = fragments.getAtomContainerCount();
 
```
Source code:
main

Belongs to CDK module:
standard

Keywords:

connectivity

Constructor Summary

Constructors
Constructor Description

ConnectivityChecker()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static boolean`	`isConnected(IAtomContainer atomContainer)`	Check whether a set of atoms in an `IAtomContainer` is connected.
`static IAtomContainerSet`	`partitionIntoMolecules(IAtomContainer container)`	Partitions the atoms in an AtomContainer into covalently connected components.
`static IAtomContainerSet`	`partitionIntoMolecules(IAtomContainer container, int[] components)`	Split a molecule based on the provided component array.

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

- Constructor Detail
  - ConnectivityChecker
```
public ConnectivityChecker()
```
- Method Detail
  - isConnected
```
public static boolean isConnected(IAtomContainer atomContainer)
```
    Check whether a set of atoms in an IAtomContainer is connected.
    
    Parameters:
    
    atomContainer - The IAtomContainer to be check for connectedness
    
    Returns:
    
    true if the IAtomContainer is connected
  - partitionIntoMolecules
```
public static IAtomContainerSet partitionIntoMolecules(IAtomContainer container)
```
    Partitions the atoms in an AtomContainer into covalently connected components.
    
    Parameters:
    
    container - The AtomContainer to be partitioned into connected components, i.e. molecules
    
    Returns:
    
    A MoleculeSet.
    
    Dictionary pointer(s):
    graphPartitioning in the Blue Obelisk Chemoinformatics Dictionary [blue-obelisk:graphPartitioning]
  - partitionIntoMolecules
```
public static IAtomContainerSet partitionIntoMolecules(IAtomContainer container,
                                                       int[] components)
```
    Split a molecule based on the provided component array. Note this function can also be used to split a single molecule, breaking bonds and distributing stereochemistry as needed.
    
    Parameters:
    
    container - the container
    
    components - the components
    
    Returns:
    
    the partitioned set