org.datanucleus.store.mapped.mapping
Class Line2dDoubleMapping

java.lang.Object
  org.datanucleus.store.mapped.mapping.JavaTypeMapping
      org.datanucleus.store.mapped.mapping.SingleFieldMultiMapping
          org.datanucleus.store.mapped.mapping.Line2dDoubleMapping

public class Line2dDoubleMapping
extends SingleFieldMultiMapping

Mapping for java.awt.geom.Line2D.Double, maps the x1, y1, x2 and y2 values to double-precision datastore fields.

Field Summary

Fields inherited from class org.datanucleus.store.mapped.mapping.JavaTypeMapping

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

Constructor Summary

Line2dDoubleMapping()

Method Summary

protected void	addDatastoreFields()
java.lang.Class	getJavaType() Accessor for the java type being mapped.
java.lang.Object	getObject(ObjectManager om, java.lang.Object resultSet, int[] exprIndex) Obtains a value from datastoreResults at position specified by exprIndex.
java.lang.Object	getSampleValue(ClassLoaderResolver clr) Return a sample value of the mapping type to be used for internal evaluation of type/conversion.
java.lang.Object	getValueForDatastoreMapping(OMFContext omfCtx, int index, java.lang.Object value) Method to return the value to be stored in the specified datastore index given the overall value for this java type.
void	initialize(AbstractMemberMetaData fmd, DatastoreContainerObject container, ClassLoaderResolver clr) Initialize this JavaTypeMapping for the supplied table and field/property metadata.
void	initialize(MappedStoreManager storeMgr, java.lang.String type) Initialize this JavaTypeMapping with the given StoreManager for the given type.
void	setObject(ObjectManager om, java.lang.Object preparedStatement, int[] exprIndex, java.lang.Object value) Sets a value into datastoreStatement at position specified by exprIndex.

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

addDatastoreField, getJavaTypeForDatastoreMapping, hasSimpleDatastoreRepresentation

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

addDatastoreMapping, equals, failureMessage, getBoolean, getByte, getChar, getColumnMetaDataForMember, getDatastoreContainer, getDatastoreMapping, getDatastoreMappings, getDouble, getFloat, getInt, getLong, getMemberMetaData, getNumberOfDatastoreMappings, getObject, getReferenceMapping, getRoleForMember, getShort, getString, getType, hashCode, includeInFetchStatement, includeInInsertStatement, includeInUpdateStatement, isNullable, isSerialised, newLiteral, newScalarExpression, setBoolean, setByte, setChar, setDatastoreContainer, setDefault, setDouble, setFloat, setInt, setLong, setMemberMetaData, setObject, setReferenceMapping, setRoleForMember, setShort, setString

Methods inherited from class java.lang.Object

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

Constructor Detail

Line2dDoubleMapping

public Line2dDoubleMapping()

Method Detail

initialize

public void initialize(AbstractMemberMetaData fmd,
                       DatastoreContainerObject container,
                       ClassLoaderResolver clr)

Description copied from class: JavaTypeMapping

Initialize this JavaTypeMapping for the supplied table and field/property metadata. Subclasses should override this method to perform any datastore initialization operations. Assumes the "roleForMember" is already set

Overrides:

initialize in class JavaTypeMapping

Parameters:

fmd - MetaData for the field/property to be mapped (if any)

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

clr - the ClassLoaderResolver

initialize

public void initialize(MappedStoreManager storeMgr,
                       java.lang.String type)

Description copied from class: JavaTypeMapping

Initialize this JavaTypeMapping with the given StoreManager for the given type. Used when the mapping is for a parameter in a query. This will not set the "mmd" and "datastoreContainer" parameters. If these are required for usage of the mapping then you should call "setFieldInformation(AbstractMemberMetaData, DatastoreContainerObject)" below Subclasses should override this method to perform any datastore initialization operations.

Overrides:

initialize in class JavaTypeMapping

Parameters:

storeMgr - The Datastore Adapter that this Mapping should use.

type - The Class that this mapping maps to the database.

See Also:

MappingFactory.createMapping(Class, MappedStoreManager, String)

addDatastoreFields

protected void addDatastoreFields()

getJavaType

public java.lang.Class getJavaType()

Description copied from class: JavaTypeMapping

Accessor for the java type being mapped. This is the java type that the mapping represents. Some examples :

• if the field is of type "MyClass" then the mapping will be OIDMapping (or subclass) the javaType will be OID, and the type will be MyClass.
• if the field is of type "int" then the mapping will be IntegerMapping, the javaType will be Integer, and the type will be int.

The "java type" is the java-type name used in the plugin.xml mapping file

Specified by:

getJavaType in class JavaTypeMapping

Returns:

The java type

getSampleValue

public java.lang.Object getSampleValue(ClassLoaderResolver clr)

Description copied from class: JavaTypeMapping

Return a sample value of the mapping type to be used for internal evaluation of type/conversion. TODO Delete when we drop legacy support

Overrides:

getSampleValue in class JavaTypeMapping

Parameters:

clr - ClassLoader resolver

Returns:

The sample value.

getValueForDatastoreMapping

public java.lang.Object getValueForDatastoreMapping(OMFContext omfCtx,
                                                    int index,
                                                    java.lang.Object value)

Method to return the value to be stored in the specified datastore index given the overall value for this java type.

Overrides:

getValueForDatastoreMapping in class JavaTypeMapping

Parameters:

index - The datastore index

value - The overall value for this java type

omfCtx - OMF Context

Returns:

The value for this datastore index

setObject

public void setObject(ObjectManager om,
                      java.lang.Object preparedStatement,
                      int[] exprIndex,
                      java.lang.Object value)

Description copied from class: JavaTypeMapping

Sets a value into datastoreStatement at position specified by exprIndex.

Overrides:

setObject in class JavaTypeMapping

Parameters:

om - the ObjectManager

preparedStatement - a datastore object that executes statements in the database

exprIndex - the position of the value in the statement

value - the value

getObject

public java.lang.Object getObject(ObjectManager om,
                                  java.lang.Object resultSet,
                                  int[] exprIndex)

Description copied from class: JavaTypeMapping

Obtains a value from datastoreResults at position specified by exprIndex.

Overrides:

getObject in class JavaTypeMapping

Parameters:

om - the ObjectManager

resultSet - an object returned from the datastore with values

exprIndex - the position of the value in the result

Returns:

the value