FolderEvent e = new FolderEvent(this, this); // Guaranteed to return a non-null array Object[] listeners = listenerList.getListenerList(); // Process the listeners last to first, notifying // those that are interested in this event for (int i = listeners.length - 2; i >= 0; i -= 2) { if (listeners[i] == IFolderListener.class) { ((IFolderListener) listeners[i + 1]).folderRemoved(e); listenerList.remove(IFolderListener.class, (IFolderListener) listeners[i + 1]); } }
ComposerModelChangedEvent e = new ComposerModelChangedEvent(this); // Guaranteed to return a non-null array Object[] listeners = listenerList.getListenerList(); // Process the listeners last to first, notifying // those that are interested in this event for (int i = listeners.length - 2; i >= 0; i -= 2) { if (listeners[i] == IComposerModelChangedListener.class) { ((IComposerModelChangedListener) listeners[i + 1]) .modelChanged(e); } }
Clone fragments detected by clone detection tool
File path: /columba-1.4-src/mail/src/main/java/org/columba/mail/folder/AbstractFolder.java File path: /columba-1.4-src/mail/src/main/java/org/columba/mail/gui/composer/ComposerModel.java
Method name: void fireFolderRemoved() Method name: void fireModelChanged()
Number of AST nodes: 6 Number of AST nodes: 5
1
FolderEvent e = new FolderEvent(this, this);
1
ComposerModelChangedEvent e = new ComposerModelChangedEvent(this);
2
		// Guaranteed to return a non-null array
2
		// Guaranteed to return a non-null array
3
		Object[] listeners = listenerList.getListenerList();
3
		Object[] listeners = listenerList.getListenerList();
4
		// Process the listeners last to first, notifying
4
		// Process the listeners last to first, notifying
5
		// those that are interested in this event
5
		// those that are interested in this event
6
		for (int i = listeners.length - 2; i >= 0; i -= 2) {
6
		for (int i = listeners.length - 2; i >= 0; i -= 2) {
7
			if (listeners[i] == IFolderListener.class) {
7
			if (listeners[i] == IComposerModelChangedListener.class) {
8
				((IFolderListener) listeners[i + 1]).folderRemoved(e);
8
				((IComposerModelChangedListener) listeners[i + 1])
9
				listenerList.remove(IFolderListener.class,
10
						(IFolderListener) listeners[i + 1]
11
);
9
						.modelChanged(e);
12
			}
10
			}
13
		}
11
		}
Summary
Number of common nesting structure subtrees1
Number of refactorable cases0
Number of non-refactorable cases1
Time elapsed for finding largest common nesting structure subtrees (ms)0.5
Clones locationClones are in different classes
Number of node comparisons9
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements5
    Number of unmapped statements in the first code fragment1
    Number of unmapped statements in the second code fragment0
    Time elapsed for statement mapping (ms)6.8
    Clone typeType 3
    Mapped Statements
    ID Statement ID Statement
    1
    FolderEvent e = new FolderEvent(this, this);
    1
    FolderEvent e = new FolderEvent(this, this);
    1
    ComposerModelChangedEvent e = new ComposerModelChangedEvent(this);
    Differences
    Expression1Expression2Difference
    org.columba.mail.folder.event.FolderEventorg.columba.mail.gui.composer.ComposerModelChangedEventSUBCLASS_TYPE_MISMATCH
    org.columba.mail.folder.event.FolderEventorg.columba.mail.gui.composer.ComposerModelChangedEventSUBCLASS_TYPE_MISMATCH
    org.columba.mail.folder.event.FolderEventorg.columba.mail.gui.composer.ComposerModelChangedEventSUBCLASS_TYPE_MISMATCH
    new FolderEvent(this,this)new ComposerModelChangedEvent(this)ARGUMENT_NUMBER_MISMATCH
    Preondition Violations
    Expression new FolderEvent(this,this) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression new FolderEvent(this,this) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    1
    ComposerModelChangedEvent e = new ComposerModelChangedEvent(this);
    2
    Object[] listeners = listenerList.getListenerList();
    2
    Object[] listeners = listenerList.getListenerList();
    3
    for (int i = listeners.length - 2; i >= 0; i -= 2)
    3
    for (int i = listeners.length - 2; i >= 0; i -= 2)
    4
    if (listeners[i] == IFolderListener.class)
    4
    if (listeners[i] == IFolderListener.class)
    4
    if (listeners[i] == IComposerModelChangedListener.class)
    Differences
    Expression1Expression2Difference
    IFolderListener.classIComposerModelChangedListener.classLITERAL_VALUE_MISMATCH
    4
    if (listeners[i] == IComposerModelChangedListener.class)
    5
    ((IFolderListener)listeners[i + 1]).folderRemoved(e);
    5
    ((IFolderListener)listeners[i + 1]).folderRemoved(e);
    5
    ((IComposerModelChangedListener)listeners[i + 1]).modelChanged(e);
    Differences
    Expression1Expression2Difference
    org.columba.mail.folder.event.FolderEventorg.columba.mail.gui.composer.ComposerModelChangedEventSUBCLASS_TYPE_MISMATCH
    folderRemovedmodelChangedMETHOD_INVOCATION_NAME_MISMATCH
    org.columba.mail.folder.event.IFolderListenerorg.columba.mail.gui.composer.IComposerModelChangedListenerVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Expression ((IFolderListener)listeners[i + 1]).folderRemoved(e) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression ((IComposerModelChangedListener)listeners[i + 1]).modelChanged(e) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression ((IFolderListener)listeners[i + 1]).folderRemoved(e) is a void method call, and thus it cannot be parameterized
    Expression ((IComposerModelChangedListener)listeners[i + 1]).modelChanged(e) is a void method call, and thus it cannot be parameterized
    Expression (IFolderListener)listeners[i + 1] cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression (IComposerModelChangedListener)listeners[i + 1] cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Type org.columba.mail.folder.event.IFolderListener does not match with type org.columba.mail.gui.composer.IComposerModelChangedListener
    • Make classes org.columba.mail.folder.event.IFolderListener and org.columba.mail.gui.composer.IComposerModelChangedListener extend a common superclass
    5
    ((IComposerModelChangedListener)listeners[i + 1]).modelChanged(e);
    6
    listenerList.remove(IFolderListener.class, (IFolderListener)listeners[i + 1]);
    6
    listenerList.remove(IFolderListener.class, (IFolderListener)listeners[i + 1]);
    Preondition Violations
    Unmatched statement listenerList.remove(IFolderListener.class,(IFolderListener)listeners[i + 1]); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
                                                                                                                                                                    
    Precondition Violations (12)
    Row Violation
    1Expression new FolderEvent(this,this) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    2Expression new FolderEvent(this,this) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    3Expression ((IFolderListener)listeners[i + 1]).folderRemoved(e) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    4Expression ((IComposerModelChangedListener)listeners[i + 1]).modelChanged(e) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    5Expression ((IFolderListener)listeners[i + 1]).folderRemoved(e) is a void method call, and thus it cannot be parameterized
    6Expression ((IComposerModelChangedListener)listeners[i + 1]).modelChanged(e) is a void method call, and thus it cannot be parameterized
    7Expression (IFolderListener)listeners[i + 1] cannot be parameterized, because it has dependencies to/from statements that will be extracted
    8Expression (IComposerModelChangedListener)listeners[i + 1] cannot be parameterized, because it has dependencies to/from statements that will be extracted
    9Type org.columba.mail.folder.event.IFolderListener does not match with type org.columba.mail.gui.composer.IComposerModelChangedListener
    10Unmatched statement listenerList.remove(IFolderListener.class,(IFolderListener)listeners[i + 1]); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    11Clone fragment #1 returns variables listeners, i , while Clone fragment #2 returns variables
    12The refactoring of the clones is infeasible, because classes org.columba.mail.folder.AbstractFolder and org.columba.mail.gui.composer.ComposerModel do not have a common superclass