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Performance improvement to MassiveList

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This commit is contained in:
Olof Larsson 2015-03-25 01:31:30 +01:00
parent 687d461d5d
commit 1e13613492
1 changed files with 22 additions and 0 deletions
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22
src/com/massivecraft/massivecore/collections/MassiveList.java
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@ -4,6 +4,8 @@ import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
/**
* This subclass adds better constructors.
@ -46,5 +48,25 @@ public class MassiveList<E> extends ArrayList<E>
{
this(Arrays.asList(elements));
}
// -------------------------------------------- //
// OPTIMIZE: REMOVE ALL & RETAIN ALL
// -------------------------------------------- //
// This will greatly reduce the complexity in cases with big sizes.
@Override
public boolean removeAll(Collection<?> c)
{
if (c instanceof List) c = new HashSet<Object>(c);
return super.removeAll(c);
}
@Override
public boolean retainAll(Collection<?> c)
{
if (c instanceof List) c = new HashSet<Object>(c);
return super.retainAll(c);
}
}