com.triactive.jdo.store.mapping
Class ByteArrayMapping

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

Direct Known Subclasses:

OracleBlobMapping

public class ByteArrayMapping

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

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

ByteArrayMapping(DatabaseAdapter dba, FieldMetaData fmd)

Method Summary

TypeInfo	chooseColumnType(Column col) Chooses an appropriate SQL type for a column based on the column's options.
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	setObject(PersistenceManager pm, java.sql.PreparedStatement ps, int param, java.lang.Object value)

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

accessAsFieldIn, defineConstraints, defineStorage, equals, getBoolean, getByte, getChar, getColumn, getDouble, getFloat, getInt, getLong, getShort, getSqlInsertionValue, getSqlUpdateValue, getString, getTypeInfo, hashCode, setBoolean, setByte, setChar, setDouble, 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

ByteArrayMapping

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

ByteArrayMapping

public ByteArrayMapping(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

chooseColumnType

public TypeInfo chooseColumnType(Column col)

Description copied from class: ColumnMapping

Chooses an appropriate SQL type for a column based on the column's options.

Overrides:

chooseColumnType in class ColumnMapping

Parameters:

col - the column

Returns:

the type info for the chosen SQL type.

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