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:

VersionLongMapping, 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.

Field Summary

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

absFieldNumber, datastoreMappings, 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	addDatastoreMapping(DatastoreMapping datastoreMapping) Method to add a datastore mapping.
DatastoreMapping	getDatastoreMapping(int index) Accessor for a datastore mapping.
DatastoreMapping[]	getDatastoreMappings() Accessor for the datastore mappings for this java type.
Class	getJavaType() Accessor for the type represented here, returning the class itself
int	getNumberOfDatastoreMappings() Accessor for the number of datastore fields.
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, getJavaTypeForDatastoreMapping, getLong, getShort, getString, getValidValues, initialize, prepareDatastoreMapping, 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, getValueForDatastoreMapping, 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.

getNumberOfDatastoreMappings

public int getNumberOfDatastoreMappings()

Accessor for the number of datastore fields.

Overrides:

getNumberOfDatastoreMappings in class JavaTypeMapping

Returns:

Number of datastore fields.

getDatastoreMapping

public DatastoreMapping getDatastoreMapping(int index)

Accessor for a datastore mapping.

Overrides:

getDatastoreMapping in class JavaTypeMapping

Parameters:

index - The mapping index

Returns:

the datastore mapping

getDatastoreMappings

public DatastoreMapping[] getDatastoreMappings()

Accessor for the datastore mappings for this java type.

Overrides:

getDatastoreMappings in class JavaTypeMapping

Returns:

The datastore mapping(s)

addDatastoreMapping

public void addDatastoreMapping(DatastoreMapping datastoreMapping)

Method to add a datastore mapping.

Overrides:

addDatastoreMapping in class JavaTypeMapping

Parameters:

datastoreMapping - 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