Replace large switch statement with a lookup table.#212
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Replace large switch statement with a lookup table.#212
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| // A statically initialized Map of IRIs to HQDM classes. | ||
| private static final Map<IRI, java.lang.Class<? extends Thing>> iriToClassMap = new HashMap<>(250); | ||
| private static final Map<IRI, java.lang.Class<? extends Thing>> iriToClassMap = new HashMap<>(400); |
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Why was this increased to 400? Was it to create headroom in case additional records are to be added? If so, this still seems to be an arbitrary number.
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It's the starting capacity of the HashMap to prevent costly reorganisation of the data structure during its initial population. 250 was fine until we added the ability to extend HQDM, because extension modules can add to this map, and yes 400 is an arbitrary number which it probably has to be since we won't know if any extensions will be added or how many, so eventually the HashMap will have to reorganise itself anyway when there are many extension classes.
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Closes #211
For discussion, but this looks better to me than the original
switchstatement. Feel free not to merge if you disagree :-)Hopefully it will also be more efficient since it removes a large cascading
if...else...construct (depending on compiler optimisations of course).