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java.lang.Objectnet.esper.eql.core.ViewResourceDelegateImpl
public class ViewResourceDelegateImpl
Coordinates between view factories and requested resource (by expressions) the availability of view resources to expressions.
Constructor Summary | |
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ViewResourceDelegateImpl(ViewFactoryChain[] viewFactories,
StatementContext statementContext)
Ctor. |
Method Summary | |
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boolean |
requestCapability(int streamNumber,
ViewCapability requestedCabability,
ViewResourceCallback resourceCallback)
Request a view resource. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ViewResourceDelegateImpl(ViewFactoryChain[] viewFactories, StatementContext statementContext)
viewFactories
- array of view factory chains, one for each streamstatementContext
- is statement-level servicesMethod Detail |
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public boolean requestCapability(int streamNumber, ViewCapability requestedCabability, ViewResourceCallback resourceCallback) throws ExprValidationException
ViewResourceDelegate
requestCapability
in interface ViewResourceDelegate
streamNumber
- is the stream number to provide the resourcerequestedCabability
- describes the view capability requiredresourceCallback
- for the delegate to supply the resource
ExprValidationException
- for use by capabilities if a capability cannot be provide or a policy is violated
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