com.triactive.jdo.store.mapping
Class DoubleMapping

java.lang.Object
  com.triactive.jdo.store.mapping.Mapping
      com.triactive.jdo.store.mapping.ColumnMapping
          com.triactive.jdo.store.mapping.DoubleMapping

public class DoubleMapping

extends ColumnMapping

Field Summary

Fields inherited from class com.triactive.jdo.store.mapping.ColumnMapping

col, typeInfo

Fields inherited from class com.triactive.jdo.store.mapping.Mapping

dba, fmd, type

Constructor Summary

DoubleMapping(DatabaseAdapter dba, java.lang.Class type)

DoubleMapping(DatabaseAdapter dba, FieldMetaData fmd)

Method Summary

double	getDouble(PersistenceManager pm, java.sql.ResultSet rs, int param)
java.lang.Object	getObject(PersistenceManager pm, java.sql.ResultSet rs, int param)
void	mapTo(Column col) Links this mapping to a specific column.
SqlExpression	newSqlExpression(QueryStatement.QueryColumn qsc) Returns an SQL expression representing a reference to a column in a query statement.
SqlExpression	newSqlLiteral(QueryStatement qs, java.lang.Object value) Returns an SQL expression representing the literal value of a Java object.
void	setDouble(PersistenceManager pm, java.sql.PreparedStatement ps, int param, double value)
void	setObject(PersistenceManager pm, java.sql.PreparedStatement ps, int param, java.lang.Object value)

Methods inherited from class com.triactive.jdo.store.mapping.ColumnMapping

accessAsFieldIn, chooseColumnType, defineConstraints, defineStorage, equals, getBoolean, getByte, getChar, getColumn, getFloat, getInt, getLong, getShort, getSqlInsertionValue, getSqlUpdateValue, getString, getTypeInfo, hashCode, setBoolean, setByte, setChar, setFloat, setInt, setLong, setShort, setString

Methods inherited from class com.triactive.jdo.store.mapping.Mapping

getDefaultMappingsByType, getFieldMetaData, getType

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleMapping

public DoubleMapping(DatabaseAdapter dba,
                     java.lang.Class type)

DoubleMapping

public DoubleMapping(DatabaseAdapter dba,
                     FieldMetaData fmd)

Method Detail

mapTo

public void mapTo(Column col)

Description copied from class: ColumnMapping

Links this mapping to a specific column. Linkage involves at least two steps:

1. Calling the column's Column.mapWith(com.triactive.jdo.store.mapping.ColumnMapping) method
2. Setting this mapping's ColumnMapping.typeInfo to match the column's

This method can be called at most once for a given mapping. Subclasses may do extra work as a consequence of mapping themselves to a column, but they should always call super.mapTo(col) first.

Overrides:

mapTo in class ColumnMapping

setDouble

public void setDouble(PersistenceManager pm,
                      java.sql.PreparedStatement ps,
                      int param,
                      double value)

Overrides:

setDouble in class ColumnMapping

getDouble

public double getDouble(PersistenceManager pm,
                        java.sql.ResultSet rs,
                        int param)

Overrides:

getDouble in class ColumnMapping

setObject

public void setObject(PersistenceManager pm,
                      java.sql.PreparedStatement ps,
                      int param,
                      java.lang.Object value)

Overrides:

setObject in class ColumnMapping

getObject

public java.lang.Object getObject(PersistenceManager pm,
                                  java.sql.ResultSet rs,
                                  int param)

Overrides:

getObject in class ColumnMapping

newSqlLiteral

public SqlExpression newSqlLiteral(QueryStatement qs,
                                   java.lang.Object value)

Description copied from class: Mapping

Returns an SQL expression representing the literal value of a Java object. The object must be of a type used with this mapping.

Specified by:

newSqlLiteral in class Mapping

Parameters:

qs - the surrounding query statement for the expression

value - the literal value

newSqlExpression

public SqlExpression newSqlExpression(QueryStatement.QueryColumn qsc)

Description copied from class: ColumnMapping

Returns an SQL expression representing a reference to a column in a query statement.

Specified by:

newSqlExpression in class ColumnMapping

Parameters:

qsc - the query column reference