23.6. Bytecode Enhancement Properties

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Property
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Example
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Purpose
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`hibernate.enhancer.enableDirtyTracking`
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`true` or `false` (default value)
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Enable dirty tracking feature in runtime bytecode enhancement.
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`hibernate.enhancer.enableLazyInitialization`
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`true` or `false` (default value)
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Enable lazy loading feature in runtime bytecode enhancement. This way, even basic types (e.g. `@Basic(fetch = FetchType.LAZY`)) can be fetched lazily.
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`hibernate.enhancer.enableAssociationManagement`
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`true` or `false` (default value)
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Enable association management feature in runtime bytecode enhancement which automatically synchronizes a bidirectional association when only one side is changed.
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`hibernate.bytecode.provider`
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`javassist` (default value)
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The [`BytecodeProvider`](https://docs.jboss.org/hibernate/orm/5.2/javadocs/org/hibernate/bytecode/spi/BytecodeProvider.html) built-in implementation flavor. Currently, only `javassist` is supported.
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`hibernate.bytecode.use_reflection_optimizer`
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`true` or `false` (default value)
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Should we use reflection optimization? The reflection optimizer implements the [`ReflectionOptimizer`](https://docs.jboss.org/hibernate/orm/5.2/javadocs/org/hibernate/bytecode/spi/ReflectionOptimizer.html) interface and improves entity instantiation and property getter/setter calls.
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