kodo.jdbc.meta
Class ColumnClassIndicator

java.lang.Object
  |
  +--kodo.jdbc.meta.Indicator
        |
        +--kodo.jdbc.meta.ClassIndicator
              |
              +--kodo.jdbc.meta.ColumnClassIndicator

All Implemented Interfaces:

Mapping

Direct Known Subclasses:

InValueClassIndicator

public abstract class ColumnClassIndicator

extends ClassIndicator

Abstract base class for class indicators that use a column to hold class information.

Constructor Summary

ColumnClassIndicator()

Method Summary

void	fromMappingInfo(MappingInfo info, boolean adapt) Deserialize this mapping from a simple MappingInfo instance parsed from XML or some other format.
Class	getClass(JDBCStoreManager store, Result res) Return the class for the current result row.
protected abstract Class	getClass(Object indicator, ClassLoader loader) Return the class for the given column value.
protected abstract Object	getClassIndicator(ClassMapping mapping) Return the value the column should take.
Column	getColumn() Return the column used to hold class info.
protected abstract int	getDataStoreTypeCode() Return the FieldMapping type code for the type of data stored by this indicator.
protected int	getJDBCType() Return the JDBC type of the column for this indicator.
void	insert(KodoStateManager sm, RowManager rm) Set values for the mapping into the proper rows.
boolean	map() Map a new instance of this mapping type.
void	refSchemaComponents() Increment the reference count of all used schema components.
boolean	select(Select sel) Select the virtual row columns of this mapping.
void	setColumn(Column col) Set the column used to hold class info.
void	toMappingInfo(MappingInfo info) Serialize this mapping to a simple MappingInfo instance for transfer to XML or some other format.

Methods inherited from class kodo.jdbc.meta.ClassIndicator

addClassConditions, getClassLoader, getDefaults, loadSubclasses, newInstance, setSubclassesLoaded, subclassesLoaded, toString

Methods inherited from class kodo.jdbc.meta.Indicator

delete, delete, getDBDictionary, getMappingRepository, getOwnerMapping, getTable, insert, isCustomDelete, isCustomInsert, isCustomUpdate, reverseMap, setOwnerMapping, update, update

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface kodo.jdbc.meta.Mapping

getMappingType

Constructor Detail

ColumnClassIndicator

public ColumnClassIndicator()

Method Detail

getColumn

public Column getColumn()

Return the column used to hold class info.

setColumn

public void setColumn(Column col)

Set the column used to hold class info.

getDataStoreTypeCode

protected abstract int getDataStoreTypeCode()

Return the FieldMapping type code for the type of data stored by this indicator.

getJDBCType

protected int getJDBCType()

Return the JDBC type of the column for this indicator. Defaults to the preferred type for getDataStoreTypeCode().

getClassIndicator

protected abstract Object getClassIndicator(ClassMapping mapping)

Return the value the column should take.

getClass

protected abstract Class getClass(Object indicator,
                                  ClassLoader loader)
                           throws ClassNotFoundException

Return the class for the given column value.

toMappingInfo

public void toMappingInfo(MappingInfo info)

Description copied from interface: Mapping

Serialize this mapping to a simple MappingInfo instance for transfer to XML or some other format.

fromMappingInfo

public void fromMappingInfo(MappingInfo info,
                            boolean adapt)

Description copied from interface: Mapping

Deserialize this mapping from a simple MappingInfo instance parsed from XML or some other format. If the info is incompatible and adapt is true, try to adapt to the new info. This method must validate the given mapping information using the SchemaGroup.findTable(kodo.jdbc.schema.Table) method to find any needed tables, the Table.getColumn(java.lang.String) method to retrieve columns from those tables, and the Column.isCompatible(int, int) method to check all column types. This validation is important, as some schema groups use these methods to build themselves up dynamically rather than reading schema information from the database.

Following copied from interface: kodo.jdbc.meta.Mapping

Throws:

MappingInfoNotFoundException - if the given info is invalid

map

public boolean map()

Description copied from interface: Mapping

Map a new instance of this mapping type. If the underlying metadata cannot be mapped using this type, return false.

refSchemaComponents

public void refSchemaComponents()

Description copied from interface: Mapping

Increment the reference count of all used schema components.

Overrides:

refSchemaComponents in class Indicator

insert

public void insert(KodoStateManager sm,
                   RowManager rm)
            throws SQLException

Description copied from interface: Mapping

Set values for the mapping into the proper rows. For class mappings, this method will be called only after the corresponding method has been called for all fields of this mapping.

Overrides:

insert in class Indicator

select

public boolean select(Select sel)

Description copied from class: Indicator

Select the virtual row columns of this mapping. Returns false by default.

Overrides:

select in class Indicator

Following copied from class: kodo.jdbc.meta.Indicator

Returns:

true if anything was selected; false otherwise

getClass

public Class getClass(JDBCStoreManager store,
                      Result res)
               throws SQLException,
                      ClassNotFoundException

Description copied from class: ClassIndicator

Return the class for the current result row.

Overrides:

getClass in class ClassIndicator