Package org.apache.cayenne.query
Class IteratedQueryDecorator
java.lang.Object
org.apache.cayenne.query.IteratedQueryDecorator
- All Implemented Interfaces:
Serializable
,Query
A simple decorator for an iterated query.
- Since:
- 5.0
- See Also:
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptioncreateSQLAction
(SQLActionVisitor visitor) A callback method invoked by Cayenne during the final execution phase of the query run.getMetaData
(EntityResolver resolver) Returns query runtime parameters.getQuery()
boolean
void
route
(QueryRouter router, EntityResolver resolver, Query substitutedQuery) A callback method invoked by Cayenne during the routing phase of the query execution.
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Constructor Details
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IteratedQueryDecorator
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Method Details
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getMetaData
Description copied from interface:Query
Returns query runtime parameters. The method is called at various stages of the execution by Cayenne access stack to retrieve query parameters. EntityResolver instance is passed to this method, meaning that the query doesn't need to store direct references to Cayenne mapping objects and can resolve them at runtime.- Specified by:
getMetaData
in interfaceQuery
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route
Description copied from interface:Query
A callback method invoked by Cayenne during the routing phase of the query execution. Mapping of DataNodes is provided by QueryRouter. Query should use aQueryRouter.route(QueryEngine, Query, Query)
callback method to route itself. Query can create one or more substitute queries or even provide its own QueryEngine to execute itself. -
createSQLAction
Description copied from interface:Query
A callback method invoked by Cayenne during the final execution phase of the query run. A concrete query implementation is given a chance to decide how it should be handled. Implementors can pick an appropriate method of the SQLActionVisitor to handle itself, create a custom SQLAction of its own, or substitute itself with another query that should be used for SQLAction construction.- Specified by:
createSQLAction
in interfaceQuery
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getQuery
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isFetchingDataRows
public boolean isFetchingDataRows()
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