Re: [morph-user] Morph's use of toString()

[Matt S. <sga...@us...>]

Hi Hernan,

When is MorphUtil.getObjectDescription called?  I think my intention was 
for it to only be called when writing TRACE output to the log file.  As 
you point out, calling this method is incredibly expensive so in a 
production system it should definitely not be called.

Matt

Hernan Silberman wrote:

>I've been doing lots of profiling today and I noticed that my JavaBeans involved 
>in Morph transformations are getting their toString() methods called.  
>
>This happens in MorphUtil.getObjectDescription( Object object ).  The else of 
>the MorphUtils.getObjectDescription() method looks like this:
>
>else {
>   return 
>      getDelimiter(object) + object + 
>      getDelimiter(object) + " (class " + 
>      object.getClass().getName() + ")"; 
>}
>
>This results in a call to String method:
>
>public static String valueOf(Object obj) {
>   return (obj == null) ? "null" : obj.toString();
>}
>
>...which is where the toString() call on my objects is coming from.
>
>This is a fairly serious performance issue for me, because my toString() 
>methods are usually not very fast and intended for human eyes (the 
>java.lang.Object javadoc says "The result should be a concise but informative 
>representation that is easy for a person to read.").  I have use cases that 
>routinely include Morphing hundreds of objects... times many possible threads, 
>every bit counts.
>
>Any way to avoid doing the toString() in MorphUtil.getObjectDescription()?
>
>I'm using Morph 0.8.3.
>
>many thanks!
>Hernan
>
>
>
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