org.datanucleus.store.rdbms.mapping.java

Class VersionMapping

java.lang.Object

org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping

org.datanucleus.store.rdbms.mapping.java.SingleFieldMapping

org.datanucleus.store.rdbms.mapping.java.VersionMapping

Direct Known Subclasses:

VersionMapping.VersionLongMapping, VersionMapping.VersionTimestampMapping

public class VersionMapping
extends SingleFieldMapping

Mapping class for mapping version state/timestamp columns in the database. This class is for internal use only. It should not be used in user mappings.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	VersionMapping.VersionLongMapping Version using a Long delegate.
static class	VersionMapping.VersionTimestampMapping Version using a Timestamp delegate.

Field Summary

Fields inherited from class org.datanucleus.store.rdbms.mapping.java.SingleFieldMapping

EXTENSION_CHECK_CONSTRAINT_VALUES

Fields inherited from class org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping

absFieldNumber, columnMappings, mmd, referenceMapping, roleForMember, storeMgr, table, type

Constructor Summary

Constructors

Constructor and Description
VersionMapping(Table table, JavaTypeMapping delegate) Constructor.

Method Summary

Modifier and Type	Method and Description
void	addColumnMapping(ColumnMapping colMapping) Method to add a column mapping.
ColumnMapping	getColumnMapping(int index) Accessor for a datastore mapping.
ColumnMapping[]	getColumnMappings() Accessor for the datastore mappings for this java type.
Class	getJavaType() Accessor for the type represented here, returning the class itself
int	getNumberOfColumnMappings() Accessor for the number of columns.
Object	getObject(org.datanucleus.ExecutionContext ec, ResultSet resultSet, int[] exprIndex) Accessor for the object in this column
boolean	includeInFetchStatement() Accessor for whether to include this column in any fetch statement
void	setObject(org.datanucleus.ExecutionContext ec, PreparedStatement ps, int[] exprIndex, Object value) Mutator for the object in this column

Methods inherited from class org.datanucleus.store.rdbms.mapping.java.SingleFieldMapping

getBoolean, getByte, getChar, getDefaultLength, getDouble, getFloat, getInt, getJavaTypeForColumnMapping, getLong, getShort, getString, getValidValues, initialize, prepareColumnMapping, setBoolean, setByte, setChar, setDouble, setFloat, setInt, setLong, setShort, setString

Methods inherited from class org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping

equals, failureMessage, getAbsoluteFieldNumber, getColumnMetaDataForMember, getMemberMetaData, getObject, getReferenceMapping, getRoleForMember, getStoreManager, getTable, getType, getValueForColumnMapping, hashCode, hasSimpleDatastoreRepresentation, includeInInsertStatement, includeInUpdateStatement, initialize, isNullable, isSerialised, representableAsStringLiteralInStatement, setAbsFieldNumber, setMemberMetaData, setObject, setReferenceMapping, setRoleForMember, setTable

Methods inherited from class java.lang.Object

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

Constructor Detail

VersionMapping

public VersionMapping(Table table,
                      JavaTypeMapping delegate)

Constructor.

Parameters:

table - Datastore table

delegate - The JavaTypeMapping to delegate the storage

Method Detail

includeInFetchStatement

public boolean includeInFetchStatement()

Accessor for whether to include this column in any fetch statement

Overrides:

includeInFetchStatement in class JavaTypeMapping

Returns:

Whether to include the column when fetching.

getNumberOfColumnMappings

public int getNumberOfColumnMappings()

Accessor for the number of columns.

Overrides:

getNumberOfColumnMappings in class JavaTypeMapping

Returns:

Number of columns.

getColumnMapping

public ColumnMapping getColumnMapping(int index)

Accessor for a datastore mapping.

Overrides:

getColumnMapping in class JavaTypeMapping

Parameters:

index - The mapping index

Returns:

the datastore mapping

getColumnMappings

public ColumnMapping[] getColumnMappings()

Accessor for the datastore mappings for this java type.

Overrides:

getColumnMappings in class JavaTypeMapping

Returns:

The datastore mapping(s)

addColumnMapping

public void addColumnMapping(ColumnMapping colMapping)

Method to add a column mapping.

Overrides:

addColumnMapping in class JavaTypeMapping

Parameters:

colMapping - The mapping

getJavaType

public Class getJavaType()

Accessor for the type represented here, returning the class itself

Specified by:

getJavaType in class JavaTypeMapping

Returns:

This class.

setObject

public void setObject(org.datanucleus.ExecutionContext ec,
                      PreparedStatement ps,
                      int[] exprIndex,
                      Object value)

Mutator for the object in this column

Overrides:

setObject in class SingleFieldMapping

Parameters:

ec - execution context

ps - The statement

exprIndex - The indexes

value - The value to set it to

getObject

public Object getObject(org.datanucleus.ExecutionContext ec,
                        ResultSet resultSet,
                        int[] exprIndex)

Accessor for the object in this column

Overrides:

getObject in class SingleFieldMapping

Parameters:

ec - execution context

resultSet - The ResultSet to get the value from

exprIndex - The indexes

Returns:

The object