about bean with no GET method performance

[Leon Liu]

Hi ,    These days I test ibatis  performance with large result set and large bean. I do following step,    1.  A bean have  84 properties  and a tabble have 84 columns.    2. and I set enhencmentEnable=true,     3. I query 10000 result from oracle database. Oracle database with JDBC driver set  defaultRowFetch=50.   Above calling take about 1700ms -1800ms. JDBC query take about 200ms.   But  when I check my bean code, I found there is a property with no get method, so I add the property's Getter Method.    Then I get a surprised, The query formance got a great improvement.  It is take about 1200ms-1300ms.    I debug ibatis code, I find follwing code may cause  big performance:   com.ibatis.sqlmap.engine.accessplan.AccessPlanFactory Line 60       if (bytecodeEnhancementEnabled) {         try {           plan = new EnhancedPropertyAccessPlan(clazz, propertyNames);         } catch (Throwable t) {           try {             plan = new PropertyAccessPlan(clazz, propertyNames);           } catch (Throwable t2) {             plan = new ComplexAccessPlan(clazz, propertyNames);           }         }       } com.ibatis.common.beans.ClassInfo Line256  public Method getGetter(String propertyName) {     Method method = (Method) getMethods.get(propertyName);     if (method == null) {       throw new ProbeException("There is no READABLE property named '" + propertyName + "' in class '" + className + "'");     }     return method;   } class EnhancedPropertyAccessPlan/PropertyAccessPlan  call com.ibatis.common.beans.ClassInfo.getGetter(String) that  cause an exception  when a bean have no Getter method, AccessPlan object choose ComplexAccessPlan.    I think ComplexAccessPlan cause the performance problem.    IBtatis automatic decide a simple bean that property have no Getter method to be  Complex type.  IBatis does not prompt any warning  enhancementEnable option will be skipped. I think these ibatis exception handling is not smooth.  and If user's bean loose some Getter method,  a common user does not know why  ibatis performance become bad. BR Leon Liu