Package com._1c.g5.v8.dt.core.provider

Class BmListMergeSupport

java.lang.Object

com._1c.g5.v8.dt.core.provider.BmListMergeSupport

public class BmListMergeSupport
extends Object

Special list analyzer for updating EList in model by new values

Constructor Summary

Constructors

Constructor	Description
BmListMergeSupport()

Method Summary

Modifier and Type	Method	Description
protected boolean	equal(Object oldValue, Object newValue)	Used by merge(EList, EList) to decide whether the old value is considered equal to the new value.
<T> void	merge(org.eclipse.emf.common.util.EList<T> externalValue, org.eclipse.emf.common.util.EList<T> internalValue)	Same as {@link merge(EList, EList, true)}
<T> void	merge(org.eclipse.emf.common.util.EList<T> externalValue, org.eclipse.emf.common.util.EList<T> internalValue, boolean containment)	Merges internalValue by externalValue.

Methods inherited from class java.lang.Object

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

Constructor Detail

BmListMergeSupport

public BmListMergeSupport()

Method Detail

merge

public <T> void merge(org.eclipse.emf.common.util.EList<T> externalValue,
                      org.eclipse.emf.common.util.EList<T> internalValue)

Same as {@link merge(EList, EList, true)}

Parameters:

externalValue - contains external values, not modified, can't be null

internalValue - updating values, will be modified in method, can't be null

See Also:

merge(EList, EList, boolean)

merge

public <T> void merge(org.eclipse.emf.common.util.EList<T> externalValue,
                      org.eclipse.emf.common.util.EList<T> internalValue,
                      boolean containment)

Merges internalValue by externalValue. After updates interanlValue will contains only elements from externalValue in the same order.

• Stage 1: finds elements from internalValue which's contained in externalValue and remember their positions in externalValue
• Stage 2: add new elements from externalValue to internalValue and remember their positions in externalValue
• Stage 3: remove old elements from internalValue which is not contained in externalValue. And then reordering elements in internalValue corresponding to externalValue

Parameters:

externalValue - contains external values, not modified, can't be null

internalValue - updating values, will be modified in method, can't be null

containment - true if collections are values of containment feature, false otherwise.

equal

protected boolean equal(Object oldValue,
                        Object newValue)

Used by merge(EList, EList) to decide whether the old value is considered equal to the new value.

Parameters:

oldValue - old value, can be null

newValue - new value, can be null

Returns:

true if oldValue equals newValue, false otherwise