Package org.eclipse.emf.compare.adapterfactory.context

Class AbstractContextTester

java.lang.Object

org.eclipse.emf.compare.adapterfactory.context.AbstractContextTester

All Implemented Interfaces:

IContextTester

public abstract class AbstractContextTester
extends Object
implements IContextTester

An abstract implementation of IContextTester that provides convenience methods for retrieving values from the context map.

Since:

4.3

Field Summary

Fields inherited from interface org.eclipse.emf.compare.adapterfactory.context.IContextTester

CTX_COMPARISON

Constructor Summary

Constructors

Constructor	Description
AbstractContextTester()

Method Summary

Modifier and Type	Method	Description
protected Comparison	getComparison(Map<Object,Object> context)	Returns the comparison stored under the IContextTester.CTX_COMPARISON key.
protected static <T> T	getValue(Map<Object,Object> context, Object key, Class<T> expectedClass)	Returns the value of the context map stored under the given key, if it is an instance of the given class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.eclipse.emf.compare.adapterfactory.context.IContextTester

apply

Constructor Details

AbstractContextTester

public AbstractContextTester()

Method Details

getComparison

protected Comparison getComparison(Map<Object,Object> context)

Returns the comparison stored under the IContextTester.CTX_COMPARISON key.

Parameters:

context - context map

Returns:

comparison or null, if no comparison is stored in the context

getValue

protected static <T> T getValue(Map<Object,Object> context,
 Object key,
 Class<T> expectedClass)

Returns the value of the context map stored under the given key, if it is an instance of the given class.

Type Parameters:

T - expected type of the value stored under the key

Parameters:

context - context map

key - the key for the context map

expectedClass - expected class for the value stored under the key

Returns:

stored value or null, if no matching value is stored under the key