@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); } }