org.springframework.data.r2dbc.query

Class QueryMapper

java.lang.Object

org.springframework.data.r2dbc.query.QueryMapper

Direct Known Subclasses:

UpdateMapper

public class QueryMapper
extends Object

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

Author:

Mark Paluch, Roman Chigvintsev

Nested Class Summary

Nested Classes

Modifier and Type	Class and 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 and Description
QueryMapper(R2dbcDialect dialect, R2dbcConverter converter) Creates a new QueryMapper with the given R2dbcConverter.

Method Summary

Modifier and Type	Method and Description
protected Object	convertValue(Object value, TypeInformation<?> typeInformation)
Parameter	getBindValue(Parameter value) Potentially convert the Parameter.
SettableValue	getBindValue(SettableValue value) Potentially convert the SettableValue.
BoundCondition	getMappedObject(BindMarkers markers, org.springframework.data.relational.core.query.CriteriaDefinition criteria, org.springframework.data.relational.core.sql.Table table, org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entity) Map a CriteriaDefinition object into Condition and consider value/NULL Bindings.
BoundCondition	getMappedObject(BindMarkers markers, Criteria criteria, org.springframework.data.relational.core.sql.Table table, org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entity) Deprecated. since 1.1.
org.springframework.data.relational.core.sql.Expression	getMappedObject(org.springframework.data.relational.core.sql.Expression expression, org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entity) Map the Expression object to apply field name mapping using the type to read.
Sort	getMappedObject(Sort sort, org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entity) Map the Sort object to apply field name mapping using the type to read.
List<org.springframework.data.relational.core.sql.OrderByField>	getMappedSort(org.springframework.data.relational.core.sql.Table table, Sort sort, org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entity) Map the Sort object to apply field name mapping using the type to read.
protected MappingContext<? extends org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?>,org.springframework.data.relational.core.mapping.RelationalPersistentProperty>	getMappingContext()
String	toSql(org.springframework.data.relational.core.sql.SqlIdentifier identifier) Render a SqlIdentifier for SQL usage.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryMapper

public QueryMapper(R2dbcDialect dialect,
                   R2dbcConverter converter)

Creates a new QueryMapper with the given R2dbcConverter.

Parameters:

dialect -

converter - must not be null.

Method Detail

toSql

public String toSql(org.springframework.data.relational.core.sql.SqlIdentifier identifier)

Render a SqlIdentifier for SQL usage.

Parameters:

identifier -

Returns:

Since:

1.1

getMappedObject

public Sort getMappedObject(Sort sort,
                            @Nullable
                            org.springframework.data.relational.core.mapping.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:

getMappedSort

public List<org.springframework.data.relational.core.sql.OrderByField> getMappedSort(org.springframework.data.relational.core.sql.Table table,
                                                                                     Sort sort,
                                                                                     @Nullable
                                                                                     org.springframework.data.relational.core.mapping.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:

Since:

1.1

getMappedObject

public org.springframework.data.relational.core.sql.Expression getMappedObject(org.springframework.data.relational.core.sql.Expression expression,
                                                                               @Nullable
                                                                               org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entity)

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

Parameters:

expression - must not be null.

entity - related RelationalPersistentEntity, can be null.

Returns:

the mapped Expression.

Since:

1.1

getMappedObject

public BoundCondition getMappedObject(BindMarkers markers,
                                      org.springframework.data.relational.core.query.CriteriaDefinition criteria,
                                      org.springframework.data.relational.core.sql.Table table,
                                      @Nullable
                                      org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entity)

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

Parameters:

markers - bind markers 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 BoundCondition.

Since:

1.1

getMappedObject

@Deprecated
public BoundCondition getMappedObject(BindMarkers markers,
                                                  Criteria criteria,
                                                  org.springframework.data.relational.core.sql.Table table,
                                                  @Nullable
                                                  org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entity)

Deprecated. since 1.1.

Map a Criteria object into Condition and consider value/NULL Bindings.

Parameters:

markers - bind markers 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 BoundCondition.

getBindValue

public SettableValue getBindValue(SettableValue value)

Potentially convert the SettableValue.

Parameters:

value -

Returns:

getBindValue

public Parameter getBindValue(Parameter value)

Potentially convert the Parameter.

Parameters:

value -

Returns:

Since:

1.2

convertValue

@Nullable
protected Object convertValue(@Nullable
                                        Object value,
                                        TypeInformation<?> typeInformation)

getMappingContext

protected MappingContext<? extends org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?>,org.springframework.data.relational.core.mapping.RelationalPersistentProperty> getMappingContext()