org.springframework.data.cassandra.core.convert

Class QueryMapper

java.lang.Object

org.springframework.data.cassandra.core.convert.QueryMapper

Direct Known Subclasses:

UpdateMapper

public class QueryMapper
extends Object

Map Query to CQL-specific data types.

Since:

2.0

Author:

Mark Paluch

See Also:

ColumnName, Columns, Criteria, Filter, Sort

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(CassandraConverter converter) Creates a new QueryMapper with the given CassandraConverter.

Method Summary

Modifier and Type	Method and Description
protected CassandraConverter	getConverter() Returns the configured CassandraConverter used to convert object values into Cassandra column typed values.
List<String>	getMappedColumnNames(Columns columns, CassandraPersistentEntity<?> entity) Map Columns with a type hint to column names for included columns.
Filter	getMappedObject(Filter filter, CassandraPersistentEntity<?> entity) Map a Filter with a type hint.
List<Columns.Selector>	getMappedSelectors(Columns columns, CassandraPersistentEntity<?> entity) Map Columns with a type hint to Columns.ColumnSelectors.
Sort	getMappedSort(Sort sort, CassandraPersistentEntity<?> entity)
protected CassandraMappingContext	getMappingContext() Returns the configured MappingContext containing mapping meta-data (persistent entities and properties) used to store (map) objects to Cassandra tables (rows/columns).

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryMapper

public QueryMapper(CassandraConverter converter)

Creates a new QueryMapper with the given CassandraConverter.

Parameters:

converter - must not be null.

Method Detail

getConverter

protected CassandraConverter getConverter()

Returns the configured CassandraConverter used to convert object values into Cassandra column typed values.

Returns:

the configured CassandraConverter.

See Also:

CassandraConverter

getMappingContext

protected CassandraMappingContext getMappingContext()

Returns the configured MappingContext containing mapping meta-data (persistent entities and properties) used to store (map) objects to Cassandra tables (rows/columns).

Returns:

the configured MappingContext.

getMappedObject

public Filter getMappedObject(Filter filter,
                              CassandraPersistentEntity<?> entity)

Map a Filter with a type hint. Filter mapping translates property names to column names and maps CriteriaDefinition.Predicate values to simple Cassandra values.

Parameters:

filter - must not be null.

entity - must not be null.

Returns:

the mapped Filter.

getMappedSelectors

public List<Columns.Selector> getMappedSelectors(Columns columns,
                                                 CassandraPersistentEntity<?> entity)

Map Columns with a type hint to Columns.ColumnSelectors.

Parameters:

columns - must not be null.

entity - must not be null.

Returns:

the mapped Columns.Selectors.

getMappedColumnNames

public List<String> getMappedColumnNames(Columns columns,
                                         CassandraPersistentEntity<?> entity)

Map Columns with a type hint to column names for included columns. Function call selectors or other Columns.Selector types are not included.

Parameters:

columns - must not be null.

entity - must not be null.

Returns:

the mapped column names.

getMappedSort

public Sort getMappedSort(Sort sort,
                          CassandraPersistentEntity<?> entity)