org.springframework.data.jdbc.repository.query

Class AbstractJdbcQuery

java.lang.Object

org.springframework.data.jdbc.repository.query.AbstractJdbcQuery

All Implemented Interfaces:

RepositoryQuery

Direct Known Subclasses:

PartTreeJdbcQuery, StringBasedJdbcQuery

public abstract class AbstractJdbcQuery
extends Object
implements RepositoryQuery

Base class for queries based on a repository method. It holds the infrastructure for executing a query and knows how to execute a query based on the return type of the method. How to construct the query is left to subclasses.

Since:

2.0

Author:

Jens Schauder, Kazuki Shimizu, Oliver Gierke, Maciej Walkowiak, Mark Paluch, Dennis Effing

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	AbstractJdbcQuery.ConvertingRowMapper<T> Delegating RowMapper that reads a row into T and converts it afterwards into Object.
static interface	AbstractJdbcQuery.RowMapperFactory Factory to create a RowMapper for a given class.

Method Summary

Modifier and Type	Method and Description
protected org.springframework.data.jdbc.repository.query.JdbcQueryExecution<?>	getQueryExecution(JdbcQueryMethod queryMethod, ResultSetExtractor<?> extractor, RowMapper<?> rowMapper) Creates a JdbcQueryExecution given JdbcQueryMethod, ResultSetExtractor an RowMapper.
JdbcQueryMethod	getQueryMethod()
protected Class<?>	resolveTypeToRead(ResultProcessor resultProcessor) Obtain the result type to read from ResultProcessor.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.springframework.data.repository.query.RepositoryQuery

execute

Method Detail

getQueryMethod

public JdbcQueryMethod getQueryMethod()

Specified by:

getQueryMethod in interface RepositoryQuery

getQueryExecution

protected org.springframework.data.jdbc.repository.query.JdbcQueryExecution<?> getQueryExecution(JdbcQueryMethod queryMethod,
                                                                                                 @Nullable
                                                                                                 ResultSetExtractor<?> extractor,
                                                                                                 RowMapper<?> rowMapper)

Creates a JdbcQueryExecution given JdbcQueryMethod, ResultSetExtractor an RowMapper. Prefers the given ResultSetExtractor over RowMapper.

Parameters:

queryMethod - must not be null.

extractor - must not be null.

rowMapper - must not be null.

Returns:

a JdbcQueryExecution appropriate for queryMethod. Guaranteed to be not null.

resolveTypeToRead

protected Class<?> resolveTypeToRead(ResultProcessor resultProcessor)

Obtain the result type to read from ResultProcessor.

Parameters:

resultProcessor - the ResultProcessor used to determine the result type. Must not be null.

Returns:

the type that should get loaded from the database before it gets converted into the actual return type of a method. Guaranteed to be not null.