uk.ac.ed.epcc.webapp.model.data

Class RangeSearch.InfoMapper

java.lang.Object

uk.ac.ed.epcc.webapp.AbstractContexed

uk.ac.ed.epcc.webapp.jdbc.expr.SQLGroupMapper<RangeSearch.Info>

uk.ac.ed.epcc.webapp.model.data.RangeSearch.InfoMapper

All Implemented Interfaces:

Contexed, ResultMapper<RangeSearch.Info>

Enclosing class:

RangeSearch<D extends DataObject>

public class RangeSearch.InfoMapper
extends SQLGroupMapper<RangeSearch.Info>

Field Summary

Fields inherited from class uk.ac.ed.epcc.webapp.jdbc.expr.SQLGroupMapper

qualify, use_alias

Fields inherited from class uk.ac.ed.epcc.webapp.AbstractContexed

conn

Constructor Summary

Constructors

Constructor and Description
InfoMapper(AppContext c)

Method Summary

Modifier and Type	Method and Description
RangeSearch.Info	makeDefault() Create a default Object to be returned if no SQL results are generated.
RangeSearch.Info	makeObject(java.sql.ResultSet rs) Convert a ResultSet into a domain object.

Methods inherited from class uk.ac.ed.epcc.webapp.jdbc.expr.SQLGroupMapper

addAverage, addClause, addCount, addCount, addKey, addKeyList, addMaxDate, addMaxNumber, addMinDate, addMinNumber, addSQLAverage, addSQLCount, addSum, getModify, getModifyParameters, getRequiredFilter, getTarget, getTargetObject, getTargetParameters, setQualify, setUseAlias

Methods inherited from class uk.ac.ed.epcc.webapp.AbstractContexed

getContext, getLogger, resetLogger

Methods inherited from class java.lang.Object

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

Constructor Detail

InfoMapper

public InfoMapper(AppContext c)

Parameters:

c -

Method Detail

makeObject

public RangeSearch.Info makeObject(java.sql.ResultSet rs)
                            throws DataException,
                                   java.sql.SQLException

Description copied from interface: ResultMapper

Convert a ResultSet into a domain object. The ResultSet should already be positioned at the correct starting Row to start creating the object It is legal for this method to return null to indicate the ResultSet represents an invalid record that should be ignored by the higher levels of the code.

Parameters:

rs - ResultSet or null

Returns:

domain object

Throws:

DataException

java.sql.SQLException

makeDefault

public RangeSearch.Info makeDefault()

Description copied from interface: ResultMapper

Create a default Object to be returned if no SQL results are generated. If there is no obvious default result then return null. Where there is an obvious result (like a sum=0 or an empty Map) this is less error prone than trying to trap null at the calling level. Note that FilterFinder can optionally check for null results and generate exceptions this still fails but makes it easier to find the problem.

Returns:

domain object