Package org.apache.torque.om.mapper
Class CompositeMapper
- java.lang.Object
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- org.apache.torque.om.mapper.CompositeMapper
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- All Implemented Interfaces:
Serializable
,RecordMapper<List<Object>>
public class CompositeMapper extends Object implements RecordMapper<List<Object>>
Uses a list of mappers to map a database record to a list of objects.- Version:
- $Id: CompositeMapper.java 1840416 2018-09-09 15:10:22Z tv $
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description CompositeMapper()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
addMapper(RecordMapper<?> mapper, int offset)
Adds a new mapper to be applied to a result set.List<Object>
processRow(ResultSet resultSet, int offset, Criteria criteria)
Maps the current row in the result Set by applying all known mappers and putting the result of each mapper in the result list.
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Method Detail
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addMapper
public void addMapper(RecordMapper<?> mapper, int offset)
Adds a new mapper to be applied to a result set.- Parameters:
mapper
- the mapper.offset
- the offset of the mapper within this mapper, 0 based.
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processRow
public List<Object> processRow(ResultSet resultSet, int offset, Criteria criteria) throws TorqueException
Maps the current row in the result Set by applying all known mappers and putting the result of each mapper in the result list.- Specified by:
processRow
in interfaceRecordMapper<List<Object>>
- Parameters:
resultSet
- the result set to map, not null.offset
- the total column offset of this mapper within the result set.criteria
- The criteria which created the result set, or null if not known. This parameter is not used by this record mapper.- Returns:
- a list of mapped objects in the same order as the mappers were ordered, not null.
- Throws:
TorqueException
- when the mapping fails.
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