AtomMatcher (cdk 2.9 API)

java.lang.Object
- org.openscience.cdk.isomorphism.AtomMatcher

```
public abstract class AtomMatcher
extends Object
```
Defines compatibility checking of atoms for (subgraph)-isomorphism mapping.

Author:

John May

Belongs to CDK module:
isomorphism

Constructor Summary

Constructors
Constructor Description

AtomMatcher()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`static AtomMatcher`	`forAny()`	Atoms are always compatible.
`static AtomMatcher`	`forElement()`	Atoms are compatible if they are the same element.
`static AtomMatcher`	`forQuery()`	Atoms are compatible if the second atom (`atom2`) is accepted by the `IQueryAtom`, `atom1`.
`abstract boolean`	`matches(IAtom atom1, IAtom atom2)`	Are the semantics of `atom1` compatible with `atom2`.

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

- Constructor Detail
  - AtomMatcher
```
public AtomMatcher()
```
- Method Detail
  - matches
```
public abstract boolean matches(IAtom atom1,
                                IAtom atom2)
```
    Are the semantics of atom1 compatible with atom2.
    
    Parameters:
    
    atom1 - an atom from a query container
    
    atom2 - an atom from the target container
    
    Returns:
    
    the atom1 can be paired with atom2
  - forAny
```
public static AtomMatcher forAny()
```
    Atoms are always compatible.
    
    Returns:
    
    a matcher for which all atoms match
  - forElement
```
public static AtomMatcher forElement()
```
    Atoms are compatible if they are the same element.
    
    Returns:
    
    a matcher which checks element compatibility
  - forQuery
```
public static AtomMatcher forQuery()
```
    Atoms are compatible if the second atom (atom2) is accepted by the IQueryAtom, atom1.
    
    Returns:
    
    a matcher which checks query atom compatibility