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## Uses of Interface
org.eclipse.birt.data.engine.api.IDataQueryDefinition

Packages that use IDataQueryDefinition
org.eclipse.birt.data.engine.api | This package contains the main public API classes and interfaces of the BIRT Data Engine (DtE).
org.eclipse.birt.data.engine.api.querydefn | This package is part of the Data Engine public API, and contains default implementation of request interfaces in `org.eclipse.birt.data.engine.api`.

Uses of IDataQueryDefinition in org.eclipse.birt.data.engine.api

Subinterfaces of IDataQueryDefinition in org.eclipse.birt.data.engine.api
`interface` | `IBaseQueryDefinition` /** Represents attributes common to a data engine query and a subquery.
`interface` | `IQueryDefinition` Defines a data engine query: a set of data transforms that provides data for a list-like element in the report.
`interface` | `ISubqueryDefinition` Provides definition of subquery: a supplemental use of rows returned by a data set or a group.

Methods in org.eclipse.birt.data.engine.api with parameters of type IDataQueryDefinition
`abstract void` | `DataEngine.registerQueries(IDataQueryDefinition[] queryDefns)` Optimize query execution by analyze a list of query definitions.

Uses of IDataQueryDefinition in org.eclipse.birt.data.engine.api.querydefn

Classes in org.eclipse.birt.data.engine.api.querydefn that implement IDataQueryDefinition
`class` | `BaseQueryDefinition` Default implementation of the `IBaseQueryDefinition` interface.
`class` | `QueryDefinition` Default implementation of the `IQueryDefinition` interface
`class` | `SubqueryDefinition` Default implementation of the `ISubqueryDefinition` interface.
`class` | `SubqueryLocator` A sub class of SubqueryDefinition.

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