ColumnMapRowMapper
directly.public class ColumnMapRowMapper extends ColumnMapRowMapper
Mapping function
implementation that creates a Map
for each row, representing all columns
as key-value pairs: one entry for each column, with the column name as key.
The Map
implementation to use and the key to use for each column in the column Map can be customized through
overriding createColumnMap(int)
and getColumnKey(java.lang.String)
, respectively.
Note: By default, ColumnMapRowMapper
will try to build a linked Map
with case-insensitive
keys, to preserve column order as well as allow any casing to be used for column names. This requires Commons
Collections on the classpath (which will be autodetected). Else, the fallback is a standard linked
HashMap
, which will still preserve column order but requires the application to specify the column
names in the same casing as exposed by the driver.
Modifier and Type | Field and Description |
---|---|
static ColumnMapRowMapper |
INSTANCE
Deprecated.
|
Constructor and Description |
---|
ColumnMapRowMapper()
Deprecated.
|
Modifier and Type | Method and Description |
---|---|
Map<String,Object> |
apply(Row row,
RowMetadata rowMetadata)
Deprecated.
|
protected Map<String,Object> |
createColumnMap(int columnCount)
Deprecated.
Create a
Map instance to be used as column map. |
protected String |
getColumnKey(String columnName)
Deprecated.
Determine the key to use for the given column in the column
Map . |
protected Object |
getColumnValue(Row row,
int index)
Deprecated.
Retrieve a R2DBC object value for the specified column.
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
andThen
public static final ColumnMapRowMapper INSTANCE
public Map<String,Object> apply(Row row, RowMetadata rowMetadata)
apply
in interface BiFunction<Row,RowMetadata,Map<String,Object>>
apply
in class ColumnMapRowMapper
protected Map<String,Object> createColumnMap(int columnCount)
Map
instance to be used as column map.
By default, a linked case-insensitive Map will be created.
createColumnMap
in class ColumnMapRowMapper
columnCount
- the column count, to be used as initial capacity for the Map.Map
instance.LinkedCaseInsensitiveMap
protected String getColumnKey(String columnName)
Map
.getColumnKey
in class ColumnMapRowMapper
columnName
- the column name as returned by the Row
.ColumnMetadata.getName()
@Nullable protected Object getColumnValue(Row row, int index)
The default implementation uses the Row.get(int)
method.
getColumnValue
in class ColumnMapRowMapper
row
- is the Row
holding the data.index
- is the column index.Copyright © 2018–2022 Pivotal Software, Inc.. All rights reserved.