com.triactive.jdo.store.mapping
Class StringMapping

java.lang.Object
  extended bycom.triactive.jdo.store.mapping.Mapping
      extended bycom.triactive.jdo.store.mapping.ColumnMapping
          extended bycom.triactive.jdo.store.mapping.StringMapping
Direct Known Subclasses:
OracleClobMapping, OracleStringMapping

public class StringMapping
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
StringMapping(DatabaseAdapter dba, java.lang.Class type)
           
StringMapping(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)
           
 java.lang.String getString(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)
           
 void setString(PersistenceManager pm, java.sql.PreparedStatement ps, int param, java.lang.String 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, getTypeInfo, hashCode, setBoolean, setByte, setChar, setDouble, setFloat, setInt, setLong, setShort
 
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

StringMapping

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

StringMapping

public StringMapping(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.

setString

public void setString(PersistenceManager pm,
                      java.sql.PreparedStatement ps,
                      int param,
                      java.lang.String value)
Overrides:
setString in class ColumnMapping

getString

public java.lang.String getString(PersistenceManager pm,
                                  java.sql.ResultSet rs,
                                  int param)
Overrides:
getString 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


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