Class QueryMapper

java.lang.Object

org.springframework.data.jdbc.core.convert.QueryMapper

public class QueryMapper
extends Object

Maps CriteriaDefinition and Sort objects considering mapping metadata and dialect-specific conversion.

Since:

3.0

Author:

Mark Paluch, Jens Schauder, Yan Qiang, Mikhail Fedorov

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	QueryMapper.Field	Value object to represent a field and its meta-information.
protected static class	QueryMapper.MetadataBackedField	Extension of QueryMapper.Field to be backed with mapping metadata.

Constructor Summary

Constructors

Constructor	Description
QueryMapper(JdbcConverter converter)	Creates a new QueryMapper with the given JdbcConverter.

Method Summary

Modifier and Type	Method	Description
protected @Nullable Object	convertValue(@Nullable Object value, org.springframework.data.core.TypeInformation<?> typeInformation)
Condition	getMappedObject(MapSqlParameterSource parameterSource, CriteriaDefinition criteria, Table table, @Nullable RelationalPersistentEntity<?> entity)	Map a CriteriaDefinition object into Condition and consider value/NULL bindings.
List<OrderByField>	getMappedSort(Table table, Sort sort, @Nullable RelationalPersistentEntity<?> entity)	Map the Sort object to apply field name mapping using the type to read.
protected MappingContext<? extends RelationalPersistentEntity<?>, RelationalPersistentProperty>	getMappingContext()

Methods inherited from class Object

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

Constructor Details

QueryMapper

public QueryMapper(JdbcConverter converter)

Creates a new QueryMapper with the given JdbcConverter.

Parameters:

converter - must not be null.

Method Details

getMappedSort

public List<OrderByField> getMappedSort(Table table,
 Sort sort,
 @Nullable RelationalPersistentEntity<?> entity)

Map the Sort object to apply field name mapping using the type to read.

Parameters:

sort - must not be null.

entity - related RelationalPersistentEntity, can be null.

Returns:

a List of OrderByField objects guaranteed to be not null.

getMappedObject

public Condition getMappedObject(MapSqlParameterSource parameterSource,
 CriteriaDefinition criteria,
 Table table,
 @Nullable RelationalPersistentEntity<?> entity)

Map a CriteriaDefinition object into Condition and consider value/NULL bindings.

Parameters:

parameterSource - bind parameterSource object, must not be null.

criteria - criteria definition to map, must not be null.

table - must not be null.

entity - related RelationalPersistentEntity, can be null.

Returns:

the mapped Condition.

convertValue

protected @Nullable Object convertValue(@Nullable Object value,
 org.springframework.data.core.TypeInformation<?> typeInformation)

getMappingContext

protected MappingContext<? extends RelationalPersistentEntity<?>, RelationalPersistentProperty> getMappingContext()