if (filterChains == null) { filterChains = new Vector(); } filterChains.addElement(filterChain);
if (resources == null) { resources = new Union(); } resources.add(rc);
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/Concat.java File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/ExecuteOn.java
Method name: void addFilterChain(FilterChain) Method name: void add(ResourceCollection)
Number of AST nodes: 3 Number of AST nodes: 3
1
if (filterChains == null) {
1
if (resources == null) {
2
            filterChains = new Vector();
2
            resources = new Union();
3
        }
3
        }
4
        filterChains.addElement(filterChain);
4
        resources.add(rc);
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)0.1
Clones locationClones are in different classes having the same super class
Number of node comparisons5
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements1
    Number of unmapped statements in the first code fragment2
    Number of unmapped statements in the second code fragment2
    Time elapsed for statement mapping (ms)0.4
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (filterChains == null)
    1
    if (filterChains == null)
    1
    if (resources == null)
    Differences
    Expression1Expression2Difference
    filterChainsresourcesVARIABLE_NAME_MISMATCH
    java.util.Vectororg.apache.tools.ant.types.resources.UnionVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type java.util.Vector of variable filterChains does not match with type org.apache.tools.ant.types.resources.Union of variable resources
    • Make classes java.util.Vector and org.apache.tools.ant.types.resources.Union extend a common superclass
    1
    if (resources == null)
                                                      
    2
    resources = new Union();
    2
    filterChains = new Vector();
                                                              
                                              
    3
    resources.add(rc);
    3
    filterChains.addElement(filterChain);
                                                                                    
    Precondition Violations (1)
    Row Violation
    1Type java.util.Vector of variable filterChains does not match with type org.apache.tools.ant.types.resources.Union of variable resources