Class SingleFieldMapping

java.lang.Object

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

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

Direct Known Subclasses:

AbstractContainerMapping, BigDecimalMapping, BigIntegerMapping, BitSetMapping, BooleanMapping, ByteMapping, CharacterMapping, DatastoreIdMapping, DiscriminatorMapping, DoubleMapping, EmbeddedMapping, EnumMapping, FileMapping, FloatMapping, IntegerMapping, LongMapping, NullMapping, NumberMapping, OrderIndexMapping, SerialisedMapping, ShortMapping, SQLFunctionMapping, StringMapping, TemporalMapping, TypeConverterMapping, UUIDMapping, VersionMapping

public abstract class SingleFieldMapping
extends JavaTypeMapping

Simple mapping for a java field mapping to a single column.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	EXTENSION_CHECK_CONSTRAINT_VALUES	Metadata extension key that the column needs a CHECK constraint in the datastore on specific values.

Fields inherited from class JavaTypeMapping

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

Constructor Summary

Constructors

Constructor	Description
SingleFieldMapping()

Method Summary

Modifier and Type	Method	Description
boolean	getBoolean(org.datanucleus.ExecutionContext ec, ResultSet resultSet, int[] exprIndex)	Obtains a value from datastoreResults at position specified by exprIndex.
byte	getByte(org.datanucleus.ExecutionContext ec, ResultSet resultSet, int[] exprIndex)	Obtains a value from datastoreResults at position specified by exprIndex.
char	getChar(org.datanucleus.ExecutionContext ec, ResultSet resultSet, int[] exprIndex)	Obtains a value from datastoreResults at position specified by exprIndex.
int	getDefaultLength(int index)	Accessor for the default length for this type in the datastore (if applicable).
double	getDouble(org.datanucleus.ExecutionContext ec, ResultSet resultSet, int[] exprIndex)	Obtains a value from datastoreResults at position specified by exprIndex.
float	getFloat(org.datanucleus.ExecutionContext ec, ResultSet resultSet, int[] exprIndex)	Obtains a value from datastoreResults at position specified by exprIndex.
int	getInt(org.datanucleus.ExecutionContext ec, ResultSet resultSet, int[] exprIndex)	Obtains a value from datastoreResults at position specified by exprIndex.
String	getJavaTypeForColumnMapping(int index)	Accessor for the name of the java-type actually used when mapping the particular datastore field.
long	getLong(org.datanucleus.ExecutionContext ec, ResultSet resultSet, int[] exprIndex)	Obtains a value from datastoreResults at position specified by exprIndex.
Object	getObject(org.datanucleus.ExecutionContext ec, ResultSet resultSet, int[] exprIndex)	Obtains a value from datastoreResults at position specified by exprIndex.
short	getShort(org.datanucleus.ExecutionContext ec, ResultSet resultSet, int[] exprIndex)	Obtains a value from datastoreResults at position specified by exprIndex.
String	getString(org.datanucleus.ExecutionContext ec, ResultSet resultSet, int[] exprIndex)	Obtains a value from datastoreResults at position specified by exprIndex.
Object[]	getValidValues(int index)	Accessor for an array of valid values that this type can take.
void	initialize(org.datanucleus.metadata.AbstractMemberMetaData fmd, Table table, org.datanucleus.ClassLoaderResolver clr)	Initialize this JavaTypeMapping with the given DatastoreAdapter for the given FieldMetaData.
protected void	prepareColumnMapping()	Method to prepare a column mapping for use in the datastore.
void	setBoolean(org.datanucleus.ExecutionContext ec, PreparedStatement ps, int[] exprIndex, boolean value)	Sets a value into datastoreStatement at position specified by exprIndex.
void	setByte(org.datanucleus.ExecutionContext ec, PreparedStatement ps, int[] exprIndex, byte value)	Sets a value into datastoreStatement at position specified by exprIndex.
void	setChar(org.datanucleus.ExecutionContext ec, PreparedStatement ps, int[] exprIndex, char value)	Sets a value into datastoreStatement at position specified by exprIndex.
void	setDouble(org.datanucleus.ExecutionContext ec, PreparedStatement ps, int[] exprIndex, double value)	Sets a value into datastoreStatement at position specified by exprIndex.
void	setFloat(org.datanucleus.ExecutionContext ec, PreparedStatement ps, int[] exprIndex, float value)	Sets a value into datastoreStatement at position specified by exprIndex.
void	setInt(org.datanucleus.ExecutionContext ec, PreparedStatement ps, int[] exprIndex, int value)	Sets a value into datastoreStatement at position specified by exprIndex.
void	setLong(org.datanucleus.ExecutionContext ec, PreparedStatement ps, int[] exprIndex, long value)	Sets a value into datastoreStatement at position specified by exprIndex.
void	setObject(org.datanucleus.ExecutionContext ec, PreparedStatement ps, int[] exprIndex, Object value)	Sets a value into datastoreStatement at position specified by exprIndex.
void	setShort(org.datanucleus.ExecutionContext ec, PreparedStatement ps, int[] exprIndex, short value)	Sets a value into datastoreStatement at position specified by exprIndex.
void	setString(org.datanucleus.ExecutionContext ec, PreparedStatement ps, int[] exprIndex, String value)	Sets a value into datastoreStatement at position specified by exprIndex.

Methods inherited from class JavaTypeMapping

addColumnMapping, equals, failureMessage, getAbsoluteFieldNumber, getColumnMapping, getColumnMappings, getColumnMetaDataForMember, getJavaType, getMemberMetaData, getNumberOfColumnMappings, getObject, getReferenceMapping, getRoleForMember, getStoreManager, getTable, getType, getValueForColumnMapping, hashCode, hasSimpleDatastoreRepresentation, includeInFetchStatement, includeInInsertStatement, includeInUpdateStatement, initialize, isNullable, isSerialised, performSetPostProcessing, representableAsStringLiteralInStatement, requiresSetPostProcessing, setAbsFieldNumber, setMemberMetaData, setObject, setReferenceMapping, setRoleForMember, setTable

Methods inherited from class Object

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

Field Details

EXTENSION_CHECK_CONSTRAINT_VALUES

public static final String EXTENSION_CHECK_CONSTRAINT_VALUES

Metadata extension key that the column needs a CHECK constraint in the datastore on specific values. Set it to the valid values.

See Also:

• Constant Field Values

Constructor Details

SingleFieldMapping

public SingleFieldMapping()

Method Details

initialize

public void initialize(org.datanucleus.metadata.AbstractMemberMetaData fmd,
 Table table,
 org.datanucleus.ClassLoaderResolver clr)

Initialize this JavaTypeMapping with the given DatastoreAdapter for the given FieldMetaData.

Overrides:

initialize in class JavaTypeMapping

Parameters:

fmd - FieldMetaData for the field to be mapped (if any)

table - The datastore container storing this mapping (if any)

clr - the ClassLoaderResolver

prepareColumnMapping

protected void prepareColumnMapping()

Method to prepare a column mapping for use in the datastore. This creates the column in the table.

getDefaultLength

public int getDefaultLength(int index)

Accessor for the default length for this type in the datastore (if applicable).

Parameters:

index - requested column index.

Returns:

Default length

getValidValues

public Object[] getValidValues(int index)

Accessor for an array of valid values that this type can take. This can be used at the datastore side for restricting the values to be inserted.

Parameters:

index - requested column index.

Returns:

The valid values

getJavaTypeForColumnMapping

public String getJavaTypeForColumnMapping(int index)

Accessor for the name of the java-type actually used when mapping the particular datastore field. This java-type must have an entry in the datastore mappings.

Overrides:

getJavaTypeForColumnMapping in class JavaTypeMapping

Parameters:

index - requested column index.

Returns:

the name of java-type for the requested column.

setBoolean

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

Description copied from class: JavaTypeMapping

Sets a value into datastoreStatement at position specified by exprIndex.

Overrides:

setBoolean in class JavaTypeMapping

Parameters:

ec - ExecutionContext

ps - PreparedStatement

exprIndex - the position of the value in the statement

value - the value

getBoolean

public boolean getBoolean(org.datanucleus.ExecutionContext ec,
 ResultSet resultSet,
 int[] exprIndex)

Description copied from class: JavaTypeMapping

Obtains a value from datastoreResults at position specified by exprIndex.

Overrides:

getBoolean in class JavaTypeMapping

Parameters:

ec - ExecutionContext

resultSet - ResultSet

exprIndex - the position of the value in the result

Returns:

the value

setChar

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

Description copied from class: JavaTypeMapping

Sets a value into datastoreStatement at position specified by exprIndex.

Overrides:

setChar in class JavaTypeMapping

Parameters:

ec - ExecutionContext

ps - PreparedStatement

exprIndex - the position of the value in the statement

value - the value

getChar

public char getChar(org.datanucleus.ExecutionContext ec,
 ResultSet resultSet,
 int[] exprIndex)

Description copied from class: JavaTypeMapping

Obtains a value from datastoreResults at position specified by exprIndex.

Overrides:

getChar in class JavaTypeMapping

Parameters:

ec - ExecutionContext

resultSet - ResultSet

exprIndex - the position of the value in the result

Returns:

the value

setByte

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

Description copied from class: JavaTypeMapping

Sets a value into datastoreStatement at position specified by exprIndex.

Overrides:

setByte in class JavaTypeMapping

Parameters:

ec - ExecutionContext

ps - PreparedStatement

exprIndex - the position of the value in the statement

value - the value

getByte

public byte getByte(org.datanucleus.ExecutionContext ec,
 ResultSet resultSet,
 int[] exprIndex)

Description copied from class: JavaTypeMapping

Obtains a value from datastoreResults at position specified by exprIndex.

Overrides:

getByte in class JavaTypeMapping

Parameters:

ec - ExecutionContext

resultSet - ResultSet

exprIndex - the position of the value in the result

Returns:

the value

setShort

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

Description copied from class: JavaTypeMapping

Sets a value into datastoreStatement at position specified by exprIndex.

Overrides:

setShort in class JavaTypeMapping

Parameters:

ec - execution context

ps - PreparedStatement

exprIndex - the position of the value in the statement

value - the value

getShort

public short getShort(org.datanucleus.ExecutionContext ec,
 ResultSet resultSet,
 int[] exprIndex)

Description copied from class: JavaTypeMapping

Obtains a value from datastoreResults at position specified by exprIndex.

Overrides:

getShort in class JavaTypeMapping

Parameters:

ec - ExecutionContext

resultSet - ResultSet

exprIndex - the position of the value in the result

Returns:

the value

setInt

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

Description copied from class: JavaTypeMapping

Sets a value into datastoreStatement at position specified by exprIndex.

Overrides:

setInt in class JavaTypeMapping

Parameters:

ec - ExecutionContext

ps - PreparedStatement

exprIndex - the position of the value in the statement

value - the value

getInt

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

Description copied from class: JavaTypeMapping

Obtains a value from datastoreResults at position specified by exprIndex.

Overrides:

getInt in class JavaTypeMapping

Parameters:

ec - ExecutionContext

resultSet - ResultSet

exprIndex - the position of the value in the result

Returns:

the value

setLong

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

Description copied from class: JavaTypeMapping

Sets a value into datastoreStatement at position specified by exprIndex.

Overrides:

setLong in class JavaTypeMapping

Parameters:

ec - ExecutionContext

ps - PreparedStatement

exprIndex - the position of the value in the statement

value - the value

getLong

public long getLong(org.datanucleus.ExecutionContext ec,
 ResultSet resultSet,
 int[] exprIndex)

Description copied from class: JavaTypeMapping

Obtains a value from datastoreResults at position specified by exprIndex.

Overrides:

getLong in class JavaTypeMapping

Parameters:

ec - ExecutionContext

resultSet - ResultSet

exprIndex - the position of the value in the result

Returns:

the value

setFloat

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

Description copied from class: JavaTypeMapping

Sets a value into datastoreStatement at position specified by exprIndex.

Overrides:

setFloat in class JavaTypeMapping

Parameters:

ec - ExecutionContext

ps - PreparedStatement

exprIndex - the position of the value in the statement

value - the value

getFloat

public float getFloat(org.datanucleus.ExecutionContext ec,
 ResultSet resultSet,
 int[] exprIndex)

Description copied from class: JavaTypeMapping

Obtains a value from datastoreResults at position specified by exprIndex.

Overrides:

getFloat in class JavaTypeMapping

Parameters:

ec - ExecutionContext

resultSet - ResultSet

exprIndex - the position of the value in the result

Returns:

the value

setDouble

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

Description copied from class: JavaTypeMapping

Sets a value into datastoreStatement at position specified by exprIndex.

Overrides:

setDouble in class JavaTypeMapping

Parameters:

ec - ExecutionContext

ps - PreparedStatement

exprIndex - the position of the value in the statement

value - the value

getDouble

public double getDouble(org.datanucleus.ExecutionContext ec,
 ResultSet resultSet,
 int[] exprIndex)

Description copied from class: JavaTypeMapping

Obtains a value from datastoreResults at position specified by exprIndex.

Overrides:

getDouble in class JavaTypeMapping

Parameters:

ec - ExecutionContext

resultSet - ResultSet

exprIndex - the position of the value in the result

Returns:

the value

setString

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

Description copied from class: JavaTypeMapping

Sets a value into datastoreStatement at position specified by exprIndex.

Overrides:

setString in class JavaTypeMapping

Parameters:

ec - ExecutionContext

ps - PreparedStatement

exprIndex - the position of the value in the statement

value - the value

getString

public String getString(org.datanucleus.ExecutionContext ec,
 ResultSet resultSet,
 int[] exprIndex)

Description copied from class: JavaTypeMapping

Obtains a value from datastoreResults at position specified by exprIndex.

Overrides:

getString in class JavaTypeMapping

Parameters:

ec - ExecutionContext

resultSet - ResultSet

exprIndex - the position of the value in the result

Returns:

the value

setObject

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

Description copied from class: JavaTypeMapping

Sets a value into datastoreStatement at position specified by exprIndex.

Overrides:

setObject in class JavaTypeMapping

Parameters:

ec - ExecutionContext

ps - PreparedStatement

exprIndex - the position of the value in the statement

value - the value

getObject

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

Description copied from class: JavaTypeMapping

Obtains a value from datastoreResults at position specified by exprIndex.

Overrides:

getObject in class JavaTypeMapping

Parameters:

ec - ExecutionContext

resultSet - ResultSet

exprIndex - the position of the value in the result

Returns:

the value