uk.ac.ed.epcc.webapp.jdbc.expr

Class MapMapper<K,R>

java.lang.Object

uk.ac.ed.epcc.webapp.AbstractContexed

uk.ac.ed.epcc.webapp.jdbc.expr.SQLGroupMapper<java.util.Map<K,R>>

uk.ac.ed.epcc.webapp.jdbc.expr.GeneralMapMapper<K,R>

uk.ac.ed.epcc.webapp.jdbc.expr.MapMapper<K,R>

Type Parameters:

K - type of key

R - type of result

All Implemented Interfaces:

Contexed, ResultMapper<java.util.Map<K,R>>

Direct Known Subclasses:

AverageMapMapper, CountDistinctMapMapper, MaximumDateMapMapper, MaximumMapMapper, MinimumDateMapMapper, MinimumMapMapper, SumMapMapper

public class MapMapper<K,R>
extends GeneralMapMapper<K,R>

SQLGroupMapper to populate a Map from a SQL query where the key and data are single target values.

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
MapMapper(AppContext c, GroupingSQLValue<K> key, java.lang.String key_name)
MapMapper(AppContext c, GroupingSQLValue<K> key, java.lang.String key_name, SQLValue<R> dat, java.lang.String dat_name) Simple constructor for a basic map between two values with no combine operation.

Method Summary

Modifier and Type	Method and Description
protected K	getNullKey()
protected K	makeKey(java.sql.ResultSet rs) Make the key object from the ResultSet
protected R	makeResult(java.sql.ResultSet rs) make the result object from the ResultSet

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

combine, makeDefault, makeObject

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

Methods inherited from interface uk.ac.ed.epcc.webapp.Contexed

getContext

Constructor Detail

MapMapper

public MapMapper(AppContext c,
                 GroupingSQLValue<K> key,
                 java.lang.String key_name)
          throws InvalidKeyException

Throws:

InvalidKeyException

MapMapper

public MapMapper(AppContext c,
                 GroupingSQLValue<K> key,
                 java.lang.String key_name,
                 SQLValue<R> dat,
                 java.lang.String dat_name)
          throws InvalidKeyException

Simple constructor for a basic map between two values with no combine operation.

Parameters:

c -

key -

key_name -

dat -

dat_name -

Throws:

InvalidKeyException

Method Detail

makeKey

protected K makeKey(java.sql.ResultSet rs)
             throws DataException,
                    java.sql.SQLException

Description copied from class: GeneralMapMapper

Make the key object from the ResultSet

Specified by:

makeKey in class GeneralMapMapper<K,R>

Returns:

Throws:

DataException

java.sql.SQLException

makeResult

protected R makeResult(java.sql.ResultSet rs)
                throws DataException,
                       java.sql.SQLException

Description copied from class: GeneralMapMapper

make the result object from the ResultSet

Specified by:

makeResult in class GeneralMapMapper<K,R>

Returns:

Throws:

DataException

java.sql.SQLException

getNullKey

protected K getNullKey()