org.datanucleus.store.mapped.mapping
Class VersionMapping

java.lang.Object
  org.datanucleus.store.mapped.mapping.JavaTypeMapping
      org.datanucleus.store.mapped.mapping.SingleFieldMapping
          org.datanucleus.store.mapped.mapping.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.mapped.mapping.JavaTypeMapping

datastoreContainer, datastoreMappings, LOCALISER, mmd, referenceMapping, roleForMember, storeMgr, type

Constructor Summary

VersionMapping(DatastoreAdapter dba, DatastoreContainerObject datastoreContainer, JavaTypeMapping delegate)
Constructor.

Method Summary

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.
java.lang.Class	getJavaType() Accessor for the type represented here, returning the class itself
int	getNumberOfDatastoreMappings() Accessor for the number of datastore fields.
java.lang.Object	getObject(ExecutionContext ec, java.lang.Object 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(ExecutionContext ec, java.lang.Object preparedStatement, int[] exprIndex, java.lang.Object value) Mutator for the object in this column

Methods inherited from class org.datanucleus.store.mapped.mapping.SingleFieldMapping

equals, 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.mapped.mapping.JavaTypeMapping

failureMessage, getColumnMetaDataForMember, getDatastoreContainer, getMemberMetaData, getObject, getReferenceMapping, getRoleForMember, getType, getValueForDatastoreMapping, hashCode, hasSimpleDatastoreRepresentation, includeInInsertStatement, includeInUpdateStatement, initialize, isNullable, isSerialised, setDatastoreContainer, setMemberMetaData, setObject, setReferenceMapping, setRoleForMember

Methods inherited from class java.lang.Object

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

Constructor Detail

VersionMapping

public VersionMapping(DatastoreAdapter dba,
                      DatastoreContainerObject datastoreContainer,
                      JavaTypeMapping delegate)

Constructor.

Parameters:

dba - Datastore Adapter

datastoreContainer - 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 java.lang.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(ExecutionContext ec,
                      java.lang.Object preparedStatement,
                      int[] exprIndex,
                      java.lang.Object value)

Mutator for the object in this column

Overrides:

setObject in class SingleFieldMapping

Parameters:

ec - execution context

preparedStatement - The statement

exprIndex - The indexes

value - The value to set it to

getObject

public java.lang.Object getObject(ExecutionContext ec,
                                  java.lang.Object 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