@Test
public void shouldUseExtendedBeanInfoWhenApplicable()
throws NoSuchMethodException, SecurityException {
// given a class with a non-void returning setter method
@SuppressWarnings("unused")
class C {
public Object setFoo(String s) {
return this;
}
public String getFoo() {
return null;
}
}
// CachedIntrospectionResults should delegate to ExtendedBeanInfo
CachedIntrospectionResults results = CachedIntrospectionResults.forClass(C.class);
BeanInfo info = results.getBeanInfo();
PropertyDescriptor pd = null;
for (PropertyDescriptor candidate : info.getPropertyDescriptors()) {
if (candidate.getName().equals("foo")) {
pd = candidate;
}
}
// resulting in a property descriptor including the non-standard setFoo method
assertThat(pd, notNullValue());
assertThat(pd.getReadMethod(), equalTo(C.class.getMethod("getFoo")));
assertThat(
"No write method found for non-void returning 'setFoo' method. "
+ "Check to see if CachedIntrospectionResults is delegating to "
+ "ExtendedBeanInfo as expected",
pd.getWriteMethod(),
equalTo(C.class.getMethod("setFoo", String.class)));
}
/** Obtain a lazily initializted CachedIntrospectionResults instance for the wrapped object. */
private CachedIntrospectionResults getCachedIntrospectionResults() {
Assert.state(this.object != null, "BeanWrapper does not hold a bean instance");
if (this.cachedIntrospectionResults == null) {
this.cachedIntrospectionResults = CachedIntrospectionResults.forClass(getWrappedClass());
}
return this.cachedIntrospectionResults;
}
/**
* Set the class to introspect. Needs to be called when the target object changes.
*
* @param clazz the class to introspect
*/
protected void setIntrospectionClass(Class clazz) {
if (this.cachedIntrospectionResults == null
|| !this.cachedIntrospectionResults.getBeanClass().equals(clazz)) {
this.cachedIntrospectionResults = CachedIntrospectionResults.forClass(clazz);
}
}