Andy Seaborne created JENA-1249:
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Summary: ModelCom constuction triggers prefix reading in TDB
Key: JENA-1249
URL: https://issues.apache.org/jira/browse/JENA-1249
Project: Apache Jena
Issue Type: Bug
Reporter: Andy Seaborne
For TDB, the Dataset-level wrapper is {{DatasetImpl}}. The model-level
operations {{Dataset.getDefaultModel}} and {{Dataset.getNamedModel}} use a
{{ModelCom}} to wrap the graph.
The {{ModelCom}} construct also calls {{ModelCom.getPrefixMapping}} which in
turn triggers the TDB graph level prefix mapping to be created.
Due to JENA-81, the prefix map is read to the cache when the graph starts.
Overall result - creating the model causes the prefix mappings to be read.
We should avoid calling {{getPrefixMapping}} inside the {{ModelCom}}
constructor.
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