if (obj == this) { return true; } if (!(obj instanceof ComparableObjectItem)) { return false; } ComparableObjectItem that = (ComparableObjectItem) obj; if (!this.x.equals(that.x)) { return false; } if (!ObjectUtilities.equal(this.obj, that.obj)) { return false; } return true;
if (obj == this) { return true; } if (!(obj instanceof HistogramDataset)) { return false; } HistogramDataset that = (HistogramDataset) obj; if (!ObjectUtilities.equal(this.type, that.type)) { return false; } if (!ObjectUtilities.equal(this.list, that.list)) { return false; } return true;
Clone fragments detected by clone detection tool
File path: /jfreechart-1.0.10/src/org/jfree/data/ComparableObjectItem.java File path: /jfreechart-1.0.10/src/org/jfree/data/statistics/HistogramDataset.java
Method name: boolean equals(Object) Method name: boolean equals(Object)
Number of AST nodes: 10 Number of AST nodes: 10
1
if (obj == this) {
1
if (obj == this) {
2
            return true;
2
            return true;
3
        }
3
        }
4
        if (!(obj instanceof ComparableObjectItem)) {
4
        if (!(obj instanceof HistogramDataset)) {
5
            return false;
5
            return false;
6
        }
6
        }
7
        ComparableObjectItem that = (ComparableObjectItem) obj;
7
        HistogramDataset that = (HistogramDataset) obj;
8
        if (!this.x.equals(that.x)) {
8
        if (!ObjectUtilities.equal(this.type, that.type)) {
9
            return false;
9
            return false;
10
        }
10
        }
11
        if (!ObjectUtilities.equal(this.obj, that.obj)) {
11
        if (!ObjectUtilities.equal(this.list, that.list)) {
12
            return false;
12
            return false;
13
        }
13
        }
14
        return true;
14
        return true;
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)1.5
Clones locationClones are in different classes
Number of node comparisons41
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements9
    Number of unmapped statements in the first code fragment1
    Number of unmapped statements in the second code fragment1
    Time elapsed for statement mapping (ms)2.5
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (obj == this)
    1
    if (obj == this)
    2
    return true;
    2
    return true;
    3
    if (!(obj instanceof ComparableObjectItem))
    3
    if (!(obj instanceof ComparableObjectItem))
    3
    if (!(obj instanceof HistogramDataset))
    Differences
    Expression1Expression2Difference
    org.jfree.data.ComparableObjectItemorg.jfree.data.statistics.HistogramDatasetVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.jfree.data.ComparableObjectItem does not match with type org.jfree.data.statistics.HistogramDataset
    • Make classes org.jfree.data.ComparableObjectItem and org.jfree.data.statistics.HistogramDataset extend a common superclass
    3
    if (!(obj instanceof HistogramDataset))
    4
    return false;
    4
    return false;
                                                                                                  
    5
    HistogramDataset that = (HistogramDataset)obj;
    5
    ComparableObjectItem that = (ComparableObjectItem)obj;
                                                                                                                  
    6
    if (!this.x.equals(that.x))
    6
    if (!this.x.equals(that.x))
    6
    if (!ObjectUtilities.equal(this.type, that.type))
    Differences
    Expression1Expression2Difference
    this.x.equals(that.x)ObjectUtilities.equal(this.type,that.type)TYPE_COMPATIBLE_REPLACEMENT
    Preondition Violations
    Expression this.x.equals(that.x) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression ObjectUtilities.equal(this.type,that.type) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    6
    if (!ObjectUtilities.equal(this.type, that.type))
    7
    return false;
    7
    return false;
    8
    if (!ObjectUtilities.equal(this.obj, that.obj))
    8
    if (!ObjectUtilities.equal(this.obj, that.obj))
    8
    if (!ObjectUtilities.equal(this.list, that.list))
    Differences
    Expression1Expression2Difference
    objlistVARIABLE_NAME_MISMATCH
    java.lang.Objectjava.util.ListVARIABLE_TYPE_MISMATCH
    org.jfree.data.ComparableObjectItemorg.jfree.data.statistics.HistogramDatasetVARIABLE_TYPE_MISMATCH
    objlistVARIABLE_NAME_MISMATCH
    java.lang.Objectjava.util.ListVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type java.lang.Object of variable this.obj does not match with type java.util.List of variable this.list
    • Make classes java.lang.Object and java.util.List extend a common superclass
    Type java.lang.Object of variable that.obj does not match with type java.util.List of variable that.list
    • Make classes org.jfree.data.ComparableObjectItem and org.jfree.data.statistics.HistogramDataset extend a common superclass
    Expression that.obj cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression that.list cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Type java.lang.Object of variable that.obj does not match with type java.util.List of variable that.list
    • Make classes java.lang.Object and java.util.List extend a common superclass
    8
    if (!ObjectUtilities.equal(this.list, that.list))
    9
    return false;
    9
    return false;
    10
    return true;
    10
    return true;
    Precondition Violations (9)
    Row Violation
    1Type org.jfree.data.ComparableObjectItem does not match with type org.jfree.data.statistics.HistogramDataset
    2Expression this.x.equals(that.x) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    3Expression ObjectUtilities.equal(this.type,that.type) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    4Type java.lang.Object of variable this.obj does not match with type java.util.List of variable this.list
    5Type java.lang.Object of variable that.obj does not match with type java.util.List of variable that.list
    6Expression that.obj cannot be parameterized, because it has dependencies to/from statements that will be extracted
    7Expression that.list cannot be parameterized, because it has dependencies to/from statements that will be extracted
    8Type java.lang.Object of variable that.obj does not match with type java.util.List of variable that.list
    9The refactoring of the clones is infeasible, because classes org.jfree.data.ComparableObjectItem and org.jfree.data.statistics.HistogramDataset do not have a common superclass