Package org.datanucleus.store.query

Package providing implementation of query language support for datastores.

See: Description

Interface Summary

Interface	Description
QueryManager	Interface providing a way of creating instances of queries for datastores, caching of generic and datastore compilations, as well as caching query results.
QueryResult<E>	Lazy collection results from a Query.

Class Summary

Class	Description
AbstractCandidateLazyLoadList	Abstract implementation of a lazy load list for candidates.
AbstractJavaQuery	Abstract representation of a Java-based query.
AbstractJDOQLQuery	Abstract representation of a JDOQL query.
AbstractJPQLQuery	Abstract representation of a JPQL query used by DataNucleus.
AbstractLazyLoadList	Abstract implementation of a lazy loaded list of (persistent) objects.
AbstractQueryResult<E>	Abstract representation of a QueryResult.
AbstractQueryResultIterator	Abstract implementation of an iterator for query results.
AbstractSQLQuery	Base definition of a query using SQL.
AbstractStoredProcedureQuery	Abstract representation of a stored procedure query.
AbstractStoredProcedureQuery.StoredProcedureParameter
CandidateIdsQueryResult<E>	QueryResult taking in the list of identities of the objects of candidate type.
Query<T>	Abstract implementation for all queries in DataNucleus.
Query.SubqueryDefinition	Simple representation of a subquery, its candidate, params and variables.
QueryManagerImpl	Manages the creation, compilation and results of queries.

Exception Summary

Exception	Description
NoQueryResultsException	Exception thrown from internal query mechanism if no results are returned.
QueryCompilerSyntaxException	Exception thrown when a query compiler finds an error relative to the expected syntax.
QueryInterruptedException	Exception thrown when a query execution is interrupted.
QueryInvalidParametersException	Exception thrown when invalid arguments/parameters are given.
QueryNotUniqueException	This exception is thrown when a user runs a Query and has marked it as UNIQUE, but it returns more than 1 object.
QueryTimeoutException	Exception thrown when a query times out beyond some specified timeout duration.

Package org.datanucleus.store.query Description

Package providing implementation of query language support for datastores. Classes provided here are typically extended by datastore packages to provide their own support for JDOQL, JPQL, SQL etc.