[SANDBOX-387] [BeanUtils2] Implement possibility to find out if a property readable and/or wirtable

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Nightly Builds
• Component/s: BeanUtils2
• Assignee: Simone Tripodi
• Reporter: Benedikt Ritter
• Created: 05/Feb/12 14:11
• Updated: 13/Feb/12 22:18
• Resolved: 13/Feb/12 22:18

Description

Currently there is no possibility to find out, if a property is readable and/or writable.
For example, one has to pass a value to setProperty(name).withValue(argument) and hope, that the property is writeable (because a NoSucheMethodExcpetion will be thrown, if it is not). For this reason it would be nice, if one could do something like:

if (on(myBean).isWritable("writeableProperty") {
    on(myBean).setProperty("writableProperty").withValue("This is a String value!");
}

Solution:

• Add public boolean isWritable(String propertyName) and public boolean isReadable(String propertyName) to BeanAccessor.
• in isWritable() check if a PropertyDescriptor can be obtained from PropertyRegistry (if not, throw NoSuchMethodException).
  • if so, return true, if propertyDescriptor.getWriteMethod() != null and false otherwise.
• in isReadable() check if a PropertyDescriptor can be obtained from PropertyRegistry (if not, throw NoSuchMethodException).
  • if so, return true, if propertyDescriptor.getReadMethod() != null and false otherwise.