Class AbstractKeyedHandler<K,V>
java.lang.Object
org.apache.commons.dbutils.handlers.AbstractKeyedHandler<K,V>
- Type Parameters:
K
- the type of keys maintained by the returned mapV
- the type of mapped values
- All Implemented Interfaces:
ResultSetHandler<Map<K,
V>>
- Direct Known Subclasses:
BeanMapHandler
,KeyedHandler
public abstract class AbstractKeyedHandler<K,V>
extends Object
implements ResultSetHandler<Map<K,V>>
ResultSetHandler
implementation that returns a Map.
ResultSet
rows are converted into objects (Vs) which are then stored
in a Map under the given keys (Ks).
- Since:
- 1.3
- See Also:
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprotected abstract K
This factory method is called byhandle()
to retrieve the key value from the currentResultSet
row.This factory method is called byhandle()
to create the Map to store records in.protected abstract V
This factory method is called byhandle()
to store the currentResultSet
row in some object.Convert each row's columns into a Map and store then in aMap
underResultSet.getObject(key)
key.
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Constructor Details
-
AbstractKeyedHandler
public AbstractKeyedHandler()
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Method Details
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createKey
This factory method is called byhandle()
to retrieve the key value from the currentResultSet
row.- Parameters:
resultSet
- ResultSet to create a key from- Returns:
- K from the configured key column name/index
- Throws:
SQLException
- if a database access error occurs
-
createMap
This factory method is called byhandle()
to create the Map to store records in. This implementation returns aHashMap
instance.- Returns:
- Map to store records in
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createRow
This factory method is called byhandle()
to store the currentResultSet
row in some object.- Parameters:
resultSet
- ResultSet to create a row from- Returns:
- V object created from the current row
- Throws:
SQLException
- if a database access error occurs
-
handle
Convert each row's columns into a Map and store then in aMap
underResultSet.getObject(key)
key.- Specified by:
handle
in interfaceResultSetHandler<K>
- Parameters:
resultSet
-ResultSet
to process.- Returns:
- A
Map
, nevernull
. - Throws:
SQLException
- if a database access error occurs- See Also:
-