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This interface represents the MEDOR evaluator.
Method Summary | |
TupleCollection |
evaluate(ParameterOperand[] parameters,
ConnectionResources ressources)
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long |
getCacheSize()
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QueryTree |
getQueryTree()
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ConnectionResources |
getRequiredConnectionResources()
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WrapperFactory |
getWrapperFactory()
Returns the associated WrapperFactory. |
void |
setPrefetchBuffer(PrefetchBuffer pb)
Requests the evaluator to index the resulting tuple collection by passing along the structure for indexing the prefetched tuples. |
Method Detail |
public TupleCollection evaluate(ParameterOperand[] parameters, ConnectionResources ressources) throws EvaluationException
parameters
- is a ConnectionResources containing associations between
the DataStore names used in the QueryTree and the connection objects to
use for the evaluation.
EvaluationException
public void setPrefetchBuffer(PrefetchBuffer pb) throws MedorException
pb
- The PrefetchBuffer to be filled by the TupleCollection.
MedorException
public ConnectionResources getRequiredConnectionResources()
public long getCacheSize()
public QueryTree getQueryTree()
public WrapperFactory getWrapperFactory()
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