org.jpox.store.mapped.mapping
Class MultiMapping

java.lang.Object
  org.jpox.store.mapped.mapping.JavaTypeMapping
      org.jpox.store.mapped.mapping.MultiMapping

Direct Known Subclasses:

ReferenceMapping, SubclassPCMapping

public abstract class MultiMapping
extends JavaTypeMapping

Mapping to represent multiple mappings. This mapping can be used to represent, for example,

• a reference field (where there are multiple implementations)
• an element in a collection and the element has no table of its own, but multiple subclasses
• a FK of a PC field (where there may be multiple fields in the PK of the PC object)

Version:

$Revision: 1.37 $

Field Summary

protected JavaTypeMapping[]

javaTypeMappings The Java mappings represented by this mapping.

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

datastoreContainer, datastoreMappings, dba, fmd, LOCALISER, MAPPING_ARRAY_ELEMENT, MAPPING_COLLECTION_ELEMENT, MAPPING_FIELD, MAPPING_MAP_KEY, MAPPING_MAP_VALUE, referenceMapping, roleForField, type

Constructor Summary

MultiMapping()

Method Summary

void	addJavaTypeMapping(JavaTypeMapping mapping) Method to add a Java type mapping for a field
DatastoreMapping	getDataStoreMapping(int index) Accessor for a datastore mapping.
JavaTypeMapping[]	getJavaTypeMapping() Accessor for the Java type mappings
int	getNumberOfDatastoreFields() Accessor for the number of datastore fields.
java.lang.Object	getObject(ObjectManager om, java.lang.Object rs, int[] pos) Method to retrieve an object of this type from the ResultSet.
void	setObject(ObjectManager om, java.lang.Object ps, int[] pos, java.lang.Object value) Method to set the parameters in the PreparedStatement with the fields of this object.
void	setObject(ObjectManager om, java.lang.Object ps, int[] pos, java.lang.Object value, StateManager ownerSM, int ownerFieldNumber) Sets a value into preparedStatement at position specified by exprIndex.

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

addDataStoreMapping, failureMessage, getBoolean, getByte, getChar, getDatastoreContainer, getDataStoreMappings, getDouble, getFieldMetaData, getFloat, getInt, getJavaType, getJavaTypeForDatastoreMapping, getLong, getObject, getReferenceMapping, getRoleForField, getSampleValue, getShort, getString, getType, includeInFetchStatement, includeInInsertStatement, includeInUpdateStatement, initialize, initialize, isNullable, isSerialised, newLiteral, newScalarExpression, setBoolean, setByte, setChar, setDefault, setDouble, setFieldInformation, setFloat, setInt, setLong, setReferenceMapping, setRoleForField, setShort, setString

Methods inherited from class java.lang.Object

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

Field Detail

javaTypeMappings

protected JavaTypeMapping[] javaTypeMappings

The Java mappings represented by this mapping.

Constructor Detail

MultiMapping

public MultiMapping()

Method Detail

addJavaTypeMapping

public void addJavaTypeMapping(JavaTypeMapping mapping)

Method to add a Java type mapping for a field

Parameters:

mapping - The mapping to add

getJavaTypeMapping

public JavaTypeMapping[] getJavaTypeMapping()

Accessor for the Java type mappings

Returns:

The Java type mappings

getNumberOfDatastoreFields

public int getNumberOfDatastoreFields()

Accessor for the number of datastore fields.

Overrides:

getNumberOfDatastoreFields in class JavaTypeMapping

Returns:

The number of datastore fields.

getDataStoreMapping

public DatastoreMapping getDataStoreMapping(int index)

Accessor for a datastore mapping.

Overrides:

getDataStoreMapping in class JavaTypeMapping

Parameters:

index - The position of the mapping to return

Returns:

The datastore mapping

setObject

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

Method to set the parameters in the PreparedStatement with the fields of this object.

Overrides:

setObject in class JavaTypeMapping

Parameters:

om - Object Manager

ps - The PreparedStatement

pos - The parameter positions

value - The object to populate the statement with

Throws:

NotYetFlushedException - Thrown if the object is not yet flushed to the datastore

setObject

public void setObject(ObjectManager om,
                      java.lang.Object ps,
                      int[] pos,
                      java.lang.Object value,
                      StateManager ownerSM,
                      int ownerFieldNumber)

Sets a value into preparedStatement at position specified by exprIndex.

Overrides:

setObject in class JavaTypeMapping

Parameters:

om - the ObjectManager

ps - a datastore object that executes statements in the database

pos - the position of the value in the statement

value - the value

ownerSM - the owner StateManager

ownerFieldNumber - the owner absolute field number

getObject

public java.lang.Object getObject(ObjectManager om,
                                  java.lang.Object rs,
                                  int[] pos)

Method to retrieve an object of this type from the ResultSet.

Overrides:

getObject in class JavaTypeMapping

Parameters:

om - Object Manager

rs - The ResultSet

pos - The parameter positions

Returns:

The object