FactoryClosed.java

package org.sonar.custom;

// Parameters for this test should be:
//    factoryMethod = org.sonar.custom.ResourceFactory#createResource(java.lang.String)
//    closingMethod = org.sonar.custom.GenericResource#closeResource(java.lang.String)

interface OpenedResource {}

public class GenericResource implements OpenedResource {
  
  public static void correct(String name) {
    GenericResource resource = new ResourceFactory().createResource(name);
    try {
      resource.use();
    } finally {
      resource.closeResource(name);
    }
  }
  
  public static void wrong(String name) {
    GenericResource resource = new ResourceFactory().createResource(name);  // Noncompliant [[flows=wrong]] {{Close this "OpenedResource".}} flow@wrong {{OpenedResource is never closed}}
    resource.use();
  }
  
  public static void wrong(int channel) {
    GenericResource resource = new ResourceFactory().createResource(channel);  // Compliant because not checked
    resource.use();
  }
  
  public GenericResource(String name) {
  }
  
  public GenericResource(int channel) {
    // Used to check differentiation between signature
  }
  
  public void use() {}
  
  public void closeResource(String name) {}
  
  public void closeResource(int channel) {}
  
}

public class ResourceFactory {
  
  public OpenedResource createResource(String name) {
    return new GenericResource(name);  // Compliant because the opened resource is returned
  }
  
  public OpenedResource createResource(int channel) {
    return new GenericResource(channel);  // Compliant because the opened resource is returned
  }
}