|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||
public interface FieldConverter
Convert a Java object into the appropriate argument to a SQL statement and then back from the result set to the Java
object. This allows databases to configure per-type conversion. This is used by the
BaseDatabaseType.getFieldConverter(DataPersister) method to find the converter for a particular database
type. Databases can then override the default data conversion mechanisms as necessary.
| Method Summary | |
|---|---|
SqlType |
getSqlType()
Return the SQL type that is stored in the database for this argument. |
boolean |
isStreamType()
Return whether or not this is a SQL "stream" object. |
Object |
javaToSqlArg(FieldType fieldType,
Object obj)
Convert a Java object and return the appropriate argument to a SQL insert or update statement. |
Object |
parseDefaultString(FieldType fieldType,
String defaultStr)
Convert a default string object and return the appropriate argument to a SQL insert or update statement. |
Object |
resultStringToJava(FieldType fieldType,
String stringValue,
int columnPos)
Convert a string result value to the related Java field. |
Object |
resultToJava(FieldType fieldType,
DatabaseResults results,
int columnPos)
This is usually just a call that takes the result from resultToSqlArg(FieldType, DatabaseResults, int)
and passes it through sqlArgToJava(FieldType, Object, int). |
Object |
resultToSqlArg(FieldType fieldType,
DatabaseResults results,
int columnPos)
Return the SQL argument object extracted from the results associated with column in position columnPos. |
Object |
sqlArgToJava(FieldType fieldType,
Object sqlArg,
int columnPos)
Return the object converted from the SQL arg to java. |
| Method Detail |
|---|
Object parseDefaultString(FieldType fieldType,
String defaultStr)
throws SQLException
SQLException
Object javaToSqlArg(FieldType fieldType,
Object obj)
throws SQLException
SQLException
Object resultToSqlArg(FieldType fieldType,
DatabaseResults results,
int columnPos)
throws SQLException
fieldType - Associated FieldType which may be null.
SQLException - If there is a problem accessing the results data.
Object resultToJava(FieldType fieldType,
DatabaseResults results,
int columnPos)
throws SQLException
resultToSqlArg(FieldType, DatabaseResults, int)
and passes it through sqlArgToJava(FieldType, Object, int).
SQLException
Object sqlArgToJava(FieldType fieldType,
Object sqlArg,
int columnPos)
throws SQLException
fieldType - Associated FieldType which may be null.sqlArg - SQL argument converted with resultToSqlArg(FieldType, DatabaseResults, int) which will not be
null.
SQLExceptionSqlType getSqlType()
boolean isStreamType()
Object resultStringToJava(FieldType fieldType,
String stringValue,
int columnPos)
throws SQLException
SQLException
|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||