Package 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, Manousos Mathioudakis, Jens Schauder

  • 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(R2dbcDialect dialect, R2dbcConverter converter)
    Creates a new QueryMapper with the given R2dbcConverter.

  • Method Summary

    Modifier and Type
    Method
    Description
    protected Object
    convertValue(Object value, TypeInformation<?> typeInformation)
     
    Parameter
    getBindValue(Parameter value)
    Potentially convert the Parameter.
    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.
    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.
    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, org.springframework.data.relational.core.query.Criteria criteria, org.springframework.data.relational.core.sql.Table table, org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entity)
    Deprecated.
    since 1.1.
    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 Details

  • Method Details

    • toSql

      public String toSql(org.springframework.data.relational.core.sql.SqlIdentifier identifier)
      Render a SqlIdentifier for SQL usage. The resulting String might contain quoting characters.
      Parameters:
      identifier - the identifier to be rendered.
      Returns:
      an identifier String.
      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, org.springframework.data.relational.core.query.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 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()