Package org.springframework.data.r2dbc.core

Class DefaultReactiveDataAccessStrategy

java.lang.Object

org.springframework.data.r2dbc.core.DefaultReactiveDataAccessStrategy

All Implemented Interfaces:

ReactiveDataAccessStrategy

public class DefaultReactiveDataAccessStrategy
extends Object
implements ReactiveDataAccessStrategy

Default ReactiveDataAccessStrategy implementation.

Author:

Mark Paluch, Louis Morgan, Jens Schauder

Nested Class Summary

Nested classes/interfaces inherited from interface org.springframework.data.r2dbc.core.ReactiveDataAccessStrategy

ReactiveDataAccessStrategy.NamedParameterProvider

Constructor Summary

Constructors

Constructor	Description
DefaultReactiveDataAccessStrategy(R2dbcDialect dialect)	Creates a new DefaultReactiveDataAccessStrategy given R2dbcDialect and optional Converters.
DefaultReactiveDataAccessStrategy(R2dbcDialect dialect, Collection<?> converters)	Creates a new DefaultReactiveDataAccessStrategy given R2dbcDialect and optional Converters.
DefaultReactiveDataAccessStrategy(R2dbcDialect dialect, R2dbcConverter converter)	Creates a new DefaultReactiveDataAccessStrategy given R2dbcDialect and R2dbcConverter.

Method Summary

Modifier and Type	Method	Description
static R2dbcConverter	createConverter(R2dbcDialect dialect, Collection<?> converters)	Creates a new R2dbcConverter given R2dbcDialect and custom converters.
List<SqlIdentifier>	getAllColumns(Class<?> entityType)
Parameter	getBindValue(Parameter value)	Return a potentially converted Parameter for strategies that support type conversion.
R2dbcConverter	getConverter()	Returns the R2dbcConverter.
List<SqlIdentifier>	getIdentifierColumns(Class<?> entityType)
MappingContext<RelationalPersistentEntity<?>,? extends RelationalPersistentProperty>	getMappingContext()
OutboundRow	getOutboundRow(Object object)	Returns a OutboundRow that maps column names to a Parameter value.
<T> BiFunction<io.r2dbc.spi.Row,io.r2dbc.spi.RowMetadata,T>	getRowMapper(Class<T> typeToRead)	Returns a row mapping function to map rows to T.
StatementMapper	getStatementMapper()	Returns the R2dbcDialect-specific StatementMapper.
SqlIdentifier	getTableName(Class<?> type)
PreparedOperation<?>	processNamedParameters(String query, ReactiveDataAccessStrategy.NamedParameterProvider parameterProvider)	Expand named parameters and return a PreparedOperation wrapping the given bindings.
String	renderForGeneratedValues(SqlIdentifier identifier)	Render a SqlIdentifier in a way suitable for registering it as a generated key with a statement through Statement#returnGeneratedValues.
RowDocument	toRowDocument(Class<?> type, io.r2dbc.spi.Readable row, Iterable<? extends io.r2dbc.spi.ReadableMetadata> metadata)	Create a flat RowDocument from a single Row or Stored Procedure output.
String	toSql(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

DefaultReactiveDataAccessStrategy

public DefaultReactiveDataAccessStrategy(R2dbcDialect dialect)

Creates a new DefaultReactiveDataAccessStrategy given R2dbcDialect and optional Converters.

Parameters:

dialect - the R2dbcDialect to use.

DefaultReactiveDataAccessStrategy

public DefaultReactiveDataAccessStrategy(R2dbcDialect dialect,
 Collection<?> converters)

Creates a new DefaultReactiveDataAccessStrategy given R2dbcDialect and optional Converters.

Parameters:

dialect - the R2dbcDialect to use.

converters - custom converters to register, must not be null.

See Also:

• R2dbcCustomConversions
• Converter

DefaultReactiveDataAccessStrategy

public DefaultReactiveDataAccessStrategy(R2dbcDialect dialect,
 R2dbcConverter converter)

Creates a new DefaultReactiveDataAccessStrategy given R2dbcDialect and R2dbcConverter.

Parameters:

dialect - the R2dbcDialect to use.

converter - must not be null.

Method Details

createConverter

public static R2dbcConverter createConverter(R2dbcDialect dialect,
 Collection<?> converters)

Creates a new R2dbcConverter given R2dbcDialect and custom converters.

Parameters:

dialect - must not be null.

converters - must not be null.

Returns:

the R2dbcConverter.

getAllColumns

public List<SqlIdentifier> getAllColumns(Class<?> entityType)

Specified by:

getAllColumns in interface ReactiveDataAccessStrategy

Returns:

all column names for a specific type.

getIdentifierColumns

public List<SqlIdentifier> getIdentifierColumns(Class<?> entityType)

Specified by:

getIdentifierColumns in interface ReactiveDataAccessStrategy

Returns:

all Id column names for a specific type.

getOutboundRow

public OutboundRow getOutboundRow(Object object)

Description copied from interface: ReactiveDataAccessStrategy

Returns a OutboundRow that maps column names to a Parameter value.

Specified by:

getOutboundRow in interface ReactiveDataAccessStrategy

Parameters:

object - must not be null.

Returns:

getBindValue

public Parameter getBindValue(Parameter value)

Description copied from interface: ReactiveDataAccessStrategy

Return a potentially converted Parameter for strategies that support type conversion.

Specified by:

getBindValue in interface ReactiveDataAccessStrategy

Parameters:

value - must not be null.

Returns:

getRowMapper

public <T>
BiFunction<io.r2dbc.spi.Row,io.r2dbc.spi.RowMetadata,T> getRowMapper(Class<T> typeToRead)

Description copied from interface: ReactiveDataAccessStrategy

Returns a row mapping function to map rows to T.

Specified by:

getRowMapper in interface ReactiveDataAccessStrategy

Returns:

toRowDocument

public RowDocument toRowDocument(Class<?> type,
 io.r2dbc.spi.Readable row,
 Iterable<? extends io.r2dbc.spi.ReadableMetadata> metadata)

Description copied from interface: ReactiveDataAccessStrategy

Create a flat RowDocument from a single Row or Stored Procedure output.

Specified by:

toRowDocument in interface ReactiveDataAccessStrategy

Parameters:

type - the underlying entity type.

row - the row or stored procedure output to retrieve data from.

metadata - readable metadata.

Returns:

the RowDocument containing the data.

processNamedParameters

public PreparedOperation<?> processNamedParameters(String query,
 ReactiveDataAccessStrategy.NamedParameterProvider parameterProvider)

Description copied from interface: ReactiveDataAccessStrategy

Expand named parameters and return a PreparedOperation wrapping the given bindings.

Specified by:

processNamedParameters in interface ReactiveDataAccessStrategy

Parameters:

query - the query to expand.

parameterProvider - indexed parameter bindings.

Returns:

the PreparedOperation encapsulating expanded SQL and namedBindings.

getTableName

public SqlIdentifier getTableName(Class<?> type)

Specified by:

getTableName in interface ReactiveDataAccessStrategy

Returns:

the table name for the entity type.

toSql

public String toSql(SqlIdentifier identifier)

Description copied from interface: ReactiveDataAccessStrategy

Render a SqlIdentifier for SQL usage.

Specified by:

toSql in interface ReactiveDataAccessStrategy

Parameters:

identifier - the identifier to be rendered.

Returns:

the SQL representation of the identifier with applied, potentially dialect-specific, processing rules.

See Also:

• SqlIdentifier.toSql(IdentifierProcessing)

getStatementMapper

public StatementMapper getStatementMapper()

Description copied from interface: ReactiveDataAccessStrategy

Returns the R2dbcDialect-specific StatementMapper.

Specified by:

getStatementMapper in interface ReactiveDataAccessStrategy

Returns:

the R2dbcDialect-specific StatementMapper.

getConverter

public R2dbcConverter getConverter()

Description copied from interface: ReactiveDataAccessStrategy

Returns the R2dbcConverter.

Specified by:

getConverter in interface ReactiveDataAccessStrategy

Returns:

the R2dbcConverter.

getMappingContext

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

renderForGeneratedValues

public String renderForGeneratedValues(SqlIdentifier identifier)

Description copied from interface: ReactiveDataAccessStrategy

Render a SqlIdentifier in a way suitable for registering it as a generated key with a statement through Statement#returnGeneratedValues.

Specified by:

renderForGeneratedValues in interface ReactiveDataAccessStrategy

Parameters:

identifier - to render. Must not be null.

Returns:

rendered identifier. Guaranteed to be not null.