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PODoes Spring allow convert abstract bean in non-abstract?
 

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    <p>My application can run on different environments. I need configure MY data model per environment. The data model is build using Spring beans. </p> <p>I use Spring 3.0.5, so I cannot conditionally load resources. I have this:</p> <pre><code>&lt;bean id="Template1" class="... .............. &lt;/bean&gt; &lt;bean id="Template2" class="... .............. &lt;/bean&gt; &lt;bean id="Template3" class="... .............. &lt;/bean&gt; ................ &lt;bean id="Factory" ...&gt; &lt;propety name="type"&gt;&lt;value&gt;${app.type}&lt;/value&gt;&lt;/property&gt; &lt;property&gt; &lt;map&gt; &lt;entry key="Temlate1" value-ref="Template1"&gt; &lt;entry key="Temlate2" value-ref="Template1"&gt; &lt;entry key="Temlate3" value-ref="Template1"&gt; .................. </code></pre> <p>Real bean I create by factory:</p> <pre><code>&lt;bean id="real" factory="Factory" factory-method="getInstance" &lt;constructor-arg&gt;Factory&lt;/..... ............. &lt;/bean&gt; </code></pre> <p>Java code:</p> <pre><code>class Factory { private Map&lt;String, Object&gt; templateBeans; Object getInstance(String name) { return templateBeans.get(name); ........... </code></pre> <p>Is it possible in some way to declare abstract template beans? Because I have very big problem with memory. Does another way exist to instantiate different beans conditionally in Spring before version 3.1? It would be good to use only EL because I don't have access to the Java code of the beans as they are from a third-party library.</p>
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    1. USMichael Petrotta
    1. USuser710818
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    1. COIf I understand correctly, you have Spring beans that are instantiated but aren't used, and you think that this causes a memory problem. Is that right? Have you clearly diagnosed that those unused singleton template beans are the ones which cause your memory problems? Or is it a shot in the dark?
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    2. COThe problem that these template beans contain references to another they to another, in sum near 1000 additional objects.
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    3. COIf each of those objects consume 10 KB of memory, that still makes only 10 MB. Make sure that they do cause a real problem before trying to fix it.
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