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Groovy - Get BeanInfo Props for name, type and value

/ Published in: Groovy
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Get obj props using java.beans.Introspector.getBeanInfo()

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  1. def getBeanInfoProps( aObj = null, aClass = null ) {
  2.  
  3. 	if ( aClass == null ) { 
  4. 		aClass = aObj?.getClass(); 
  5. 	}
  6. 	assert( [aObj, aClass].count(null) != 2 );
  7.  
  8. 	def map = [:];
  9.  
  10. 	def lst = java.beans.Introspector.getBeanInfo( aClass ).propertyDescriptors.collect { it }
  11. 	lst.eachWithIndex { itr, idx -> 
  12. 		String theName = "${itr?.getReadMethod()?.name}".trim();
  13. 		if (theName.size() >= 3) {
  14. 			def startIdx          = theName.startsWith('is') ? 2 : 3 ; // is or get
  15. 			def propNameWrongCase = theName.substring( startIdx )
  16. 			def propName          = java.beans.Introspector.decapitalize(propNameWrongCase);
  17.  
  18. 			def nestedMap   = [:]
  19. 			map[ propName ] = nestedMap;
  20.  
  21. 			nestedMap.name  = propName;
  22. 			nestedMap.type  = itr.getPropertyType();
  23. 			nestedMap.value = (aObj == null) ? null : aObj[ propName ] ;
  24. 		}
  25. 	}
  26. 	// println map.values().join('\n')
  27. 	return map;
  28. }

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