Spring Correctly set auto-growing array's element

The implementation of AbstractNestablePropertyAccessor.processKeyedProperty results in a java.lang.IllegalArgumentException: array element type mismatch when the property expression has more than one property key and the last key causes the array to grow automatically.

For example, given a property int[][] multiArray = new int[2][2] and property expression multiArray[1][3], the processKeyedProperty method creates a new array object and assigns it to multiArray; whereas, the new array object should be assigned to multiArray[1].

Comment From: nullzl

Please provide a unit test that fails before the change and passes after the change -- for example, something analogous to org.springframework.beans.BeanWrapperAutoGrowingTests.getPropertyValueAutoGrowMultiDimensionalArray().

Thanks

Thank you very much for your review. I have added a unit test org.springframework.beans.BeanWrapperAutoGrowingTests.setPropertyValueAutoGrowMultiDimensionalArray().

Comment From: sbrannen

This has been merged into master in a33eac3ec05952424603d1fefc627b4a3ef36449, revised in 8baf404893037951ac29393a41d40af4fa11775b, and backported to 5.2.x.

Thanks for catching and fixing this bug!