kodo.jdbc.meta
Class ManyToManyFieldMapping

java.lang.Object
  |
  +--kodo.meta.DelegatingExtensions
        |
        +--kodo.meta.DelegatingFieldMetaData
              |
              +--kodo.jdbc.meta.AbstractFieldMapping
                    |
                    +--kodo.jdbc.meta.ReferenceFieldMapping
                          |
                          +--kodo.jdbc.meta.ContainerFieldMapping
                                |
                                +--kodo.jdbc.meta.AbstractCollectionFieldMapping
                                      |
                                      +--kodo.jdbc.meta.ManyToManyFieldMapping

All Implemented Interfaces:

Commentable, Comparable, Extensions, FieldMapping, FieldMetaData, JDBCTypes, JDOTypes, Mapping

public class ManyToManyFieldMapping

extends AbstractCollectionFieldMapping

Maps a relation to a collection of other objects using an xref table.

Inner classes inherited from class kodo.jdbc.meta.AbstractCollectionFieldMapping

AbstractCollectionFieldMapping.LRSProxyCollection

Field Summary

static String

TYPE

Fields inherited from class kodo.jdbc.meta.AbstractCollectionFieldMapping

ORDERED

Fields inherited from class kodo.jdbc.meta.ContainerFieldMapping

CONTAINER_META

Fields inherited from interface kodo.jdbc.meta.JDBCTypes

TYPE_ASCII_STREAM, TYPE_BINARY_STREAM, TYPE_BLOB, TYPE_BYTES, TYPE_CHAR_STREAM, TYPE_CLOB, TYPE_JDBC_DEFAULT, TYPE_REF, TYPE_SQL_ARRAY, TYPE_SQL_DATE, TYPE_SQL_OBJECT, TYPE_TIME, TYPE_TIMESTAMP

Fields inherited from interface kodo.meta.JDOTypes

TYPE_ARRAY, TYPE_BIGDECIMAL, TYPE_BIGINTEGER, TYPE_BOOLEAN, TYPE_BOOLEAN_OBJ, TYPE_BYTE, TYPE_BYTE_OBJ, TYPE_CHAR, TYPE_CHAR_OBJ, TYPE_COLLECTION, TYPE_DATE, TYPE_DOUBLE, TYPE_DOUBLE_OBJ, TYPE_FCO, TYPE_FLOAT, TYPE_FLOAT_OBJ, TYPE_INT, TYPE_INT_OBJ, TYPE_LOCALE, TYPE_LONG, TYPE_LONG_OBJ, TYPE_MAP, TYPE_NUMBER, TYPE_OBJECT, TYPE_PC_OBJECT, TYPE_SHORT, TYPE_SHORT_OBJ, TYPE_STRING

Fields inherited from interface kodo.jdbc.meta.FieldMapping

AUTO_INCREMENT, DELETE_ACTION, ELEMENT_DELETE_ACTION, ELEMENT_INDEXED, ELEMENT_SIZE, EXTENSION_KEYS, FIELD_MAP, INDEXED, JDBC_TYPE, KEY_DELETE_ACTION, KEY_INDEXED, KEY_SIZE, REF_DELETE_ACTION, REF_INDEXED, SIZE, SQL_TYPE, VALUE_DELETE_ACTION, VALUE_INDEXED, VALUE_SIZE

Fields inherited from interface kodo.meta.FieldMetaData

DEPENDENT, EAGER_FETCH_MODE, ELEMENT_DEPENDENT, ELEMENT_TYPE, EXTERNAL_VALUES, EXTERNALIZER, FACTORY, FETCH_GROUP, INVERSE_LOGICAL, INVERSE_OWNER, KEY_DEPENDENT, KEY_TYPE, LOCK_GROUP, LOCK_GROUP_DEFAULT, LOCK_GROUP_NONE, LRS, MANAGE_NONE, MANAGE_PERSISTENT, MANAGE_TRANSACTIONAL, NULL_DEFAULT, NULL_EXCEPTION, NULL_NONE, NULL_UNSET, SEQUENCE_ASSIGNED, VALUE_DEPENDENT, VALUE_TYPE

Constructor Summary

ManyToManyFieldMapping(FieldMetaData meta)
Constructor.

Method Summary

void	addMappingInfoAttributes(Collection attrs) Add all mapping attributes names used by this mapping to the given collection.
void	delete(KodoStateManager sm, RowManager rm) Delete the row for this object if the reference foreign key exists.
void	deleteEmbedded(KodoStateManager sm, RowManager rm) Delete values for the mapping.
void	fromMappingInfo(MappingInfo info, boolean adapt) The default implementation will raise warnings for any mapping attributes that are declared but not in the list of the valid attributes for this mapping.
Column[]	getColumns() Return the data columns for this mapping.
Object	getDataStoreValue(Object val) Translate the given external field value to its datastore equivalent.
ForeignKey	getForeignKey() Return the foreign key to the related object.
String	getMappingType() Return the abbreviated name of this mapping, or the full class name if it is a custom mapping.
void	insert(KodoStateManager sm, RowManager rm) Set values for the mapping into the proper rows.
static boolean	isJoinTable(Table table, ReverseMappingTool tool) Return true if the given table matches the pattern for a join table.
Joins	joinRelation(Joins joins) Join this value's table to the table for the related first class object type, if any.
Object	loadProjection(JDBCStoreManager store, JDBCFetchConfiguration fetch, Result res, Joins joins) Load this field value using the given result.
boolean	map() Map a new instance of this mapping type.
void	nullEmbedded(KodoStateManager sm, RowManager rm) Null values for the mapping.
void	refSchemaComponents() Increment the reference count of all used schema components.
void	reverseMap(SchemaGroup schema, ReverseMappingTool tool) Create mappings from the schema, using the given tool.
protected void	selectProjection(Select sel, JDBCStoreManager store, JDBCFetchConfiguration fetch, int eagerMode, Joins joins) Implement this method to select the projection of this field.
void	setForeignKey(ForeignKey fk) Set the foreign key to the related object.
boolean	supportsSelect(Select sel, int type, KodoStateManager sm, JDBCStoreManager store, JDBCFetchConfiguration fetch) Return true if this mapping can perform the given select type.
void	toMappingInfo(MappingInfo info) Serialize this mapping to a simple MappingInfo instance for transfer to XML or some other format.
void	update(KodoStateManager sm, RowManager rm) Set values for the mapping into the proper rows.

Methods inherited from class kodo.jdbc.meta.AbstractCollectionFieldMapping

addExtensionKeys, fromMappingInfo, getOrderColumn, getOrdered, isEagerJoinToMany, load, loadEagerJoin, loadEagerParallel, map, selectEagerJoin, selectEagerParallel, setOrderColumn, setOrdered, toArray, toCollection

Methods inherited from class kodo.jdbc.meta.ContainerFieldMapping

appendIsEmpty, appendIsNotNull, appendIsNull, getContainerMeta, getMetaDataColumn, join, load, select, setContainerMeta, setMetaDataColumn

Methods inherited from class kodo.jdbc.meta.ReferenceFieldMapping

createRefForeignKey, getJoinedRow, getRefForeignKey, getRefJoins, getRefJoinType, getTable, join, setRefForeignKey, setRefForeignKey, setRefJoinType, wherePrimaryKey, whereRefForeignKey

Methods inherited from class kodo.jdbc.meta.AbstractFieldMapping

assertTable, delete, deleteEmbedded, getDBDictionary, getDeclaredElementTypeMapping, getDeclaredElementTypeMetaData, getDeclaredKeyTypeMapping, getDeclaredKeyTypeMetaData, getDeclaredTypeMapping, getDeclaredTypeMetaData, getDeleteAction, getElementDeleteAction, getElementIndexed, getElementSize, getElementTypeMapping, getElementTypeMetaData, getFieldMappingName, getIndexed, getInverseMappings, getInverseMetaDatas, getInverseOwnerMapping, getInverseOwnerMetaData, getJDBCTypeCode, getKeyColumns, getKeyDataStoreValue, getKeyDeleteAction, getKeyIndexed, getKeySize, getKeyTypeMapping, getKeyTypeMetaData, getMappingRepository, getMetaData, getNonVirtualOwner, getOwner, getOwnerMapping, getOwnerTable, getRefDeleteAction, getRefIndexed, getSize, getSQLType, getTypeMapping, getTypeMetaData, insert, invalidateResolve, isAutoIncrement, isCustomDelete, isCustomDeleteEmbedded, isCustomInsert, isCustomNullEmbedded, isCustomUpdate, isDeleteActionDeferred, isElementDeleteActionDeferred, isKeyDeleteActionDeferred, isPCObjectRelation, isRefDeleteActionDeferred, isResolved, joinKey, joinKeyRelation, loadKeyProjection, nullEmbedded, resolve, setAutoIncrement, setDeleteAction, setElementDeleteAction, setElementIndexed, setElementSize, setFieldMappingName, setIndexed, setJDBCTypeCode, setKeyDeleteAction, setKeyIndexed, setKeySize, setNonVirtualOwner, setOwner, setRefDeleteAction, setRefIndexed, setSize, setSQLType, update, usesImplData, usesIntermediate

Methods inherited from class kodo.meta.DelegatingFieldMetaData

compareTo, equals, getComments, getComparator, getDeclaredElementType, getDeclaredElementTypeCode, getDeclaredIndex, getDeclaredKeyType, getDeclaredKeyTypeCode, getDeclaredPrimaryKeyIndex, getDeclaredType, getDeclaredTypeCode, getDelegate, getEagerFetchMode, getElementType, getElementTypeCode, getElementTypeName, getExternalizer, getExternalValue, getExternalValues, getFactory, getFetchGroup, getFieldFlag, getFieldValue, getFullName, getIndex, getInnermostDelegate, getInverseLogical, getInverseOwner, getKeyType, getKeyTypeCode, getKeyTypeName, getListingIndex, getLockGroup, getManagement, getName, getNullValue, getPrimaryKeyIndex, getProxyType, getType, getTypeCode, getTypeName, hashCode, isDefaultFetchGroupExplicit, isDependent, isElementDependent, isElementEmbedded, isEmbedded, isExplicit, isExternalized, isInDefaultFetchGroup, isKeyDependent, isKeyEmbedded, isLRS, isPrimaryKey, isSequenceAssigned, isTransient, setComparator, setDeclaredElementType, setDeclaredElementTypeCode, setDeclaredIndex, setDeclaredKeyType, setDeclaredKeyTypeCode, setDeclaredPrimaryKeyIndex, setDeclaredType, setDeclaredTypeCode, setDependent, setEagerFetchMode, setElementDependent, setElementEmbedded, setElementTypeName, setEmbedded, setExplicit, setExternalizer, setExternalValues, setFactory, setFetchGroup, setInDefaultFetchGroup, setIndex, setInverseLogical, setInverseOwner, setKeyDependent, setKeyEmbedded, setKeyTypeName, setListingIndex, setLockGroup, setLRS, setManagement, setName, setNullValue, setPrimaryKey, setProxyType, setSequenceAssigned, setTransient, setTypeName, toString

Methods inherited from class kodo.meta.DelegatingExtensions

addExtension, addExtension, getBooleanExtension, getBooleanExtension, getDoubleExtension, getDoubleExtension, getEmbeddedExtensions, getEmbeddedExtensions, getExtensionComments, getExtensionKeys, getExtensionKeys, getExtensionVendors, getIntExtension, getIntExtension, getObjectExtension, getObjectExtension, getStringExtension, getStringExtension, hasExtension, hasExtension, isEmpty, removeEmbeddedExtensions, removeEmbeddedExtensions, removeExtension, removeExtension

Methods inherited from class java.lang.Object

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

Methods inherited from interface kodo.meta.FieldMetaData

getComparator, getDeclaredElementType, getDeclaredElementTypeCode, getDeclaredIndex, getDeclaredKeyType, getDeclaredKeyTypeCode, getDeclaredPrimaryKeyIndex, getDeclaredType, getDeclaredTypeCode, getEagerFetchMode, getElementType, getElementTypeCode, getElementTypeName, getExternalizer, getExternalValue, getExternalValues, getFactory, getFetchGroup, getFieldFlag, getFieldValue, getFullName, getIndex, getInverseLogical, getInverseOwner, getKeyType, getKeyTypeCode, getKeyTypeName, getListingIndex, getLockGroup, getManagement, getName, getNullValue, getPrimaryKeyIndex, getProxyType, getType, getTypeCode, getTypeName, isDefaultFetchGroupExplicit, isDependent, isElementDependent, isElementEmbedded, isEmbedded, isExplicit, isExternalized, isInDefaultFetchGroup, isKeyDependent, isKeyEmbedded, isLRS, isPrimaryKey, isSequenceAssigned, isTransient, setComparator, setDeclaredElementType, setDeclaredElementTypeCode, setDeclaredIndex, setDeclaredKeyType, setDeclaredKeyTypeCode, setDeclaredPrimaryKeyIndex, setDeclaredType, setDeclaredTypeCode, setDependent, setEagerFetchMode, setElementDependent, setElementEmbedded, setElementTypeName, setEmbedded, setExplicit, setExternalizer, setExternalValues, setFactory, setFetchGroup, setInDefaultFetchGroup, setIndex, setInverseLogical, setInverseOwner, setKeyDependent, setKeyEmbedded, setKeyTypeName, setListingIndex, setLockGroup, setLRS, setManagement, setName, setNullValue, setPrimaryKey, setProxyType, setSequenceAssigned, setTransient, setTypeName

Methods inherited from interface kodo.meta.Extensions

addExtension, addExtension, getBooleanExtension, getBooleanExtension, getDoubleExtension, getDoubleExtension, getEmbeddedExtensions, getEmbeddedExtensions, getExtensionComments, getExtensionKeys, getExtensionKeys, getExtensionVendors, getIntExtension, getIntExtension, getObjectExtension, getObjectExtension, getStringExtension, getStringExtension, hasExtension, hasExtension, isEmpty, removeEmbeddedExtensions, removeEmbeddedExtensions, removeExtension, removeExtension

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface kodo.meta.Commentable

getComments

Field Detail

TYPE

public static final String TYPE

Constructor Detail

ManyToManyFieldMapping

public ManyToManyFieldMapping(FieldMetaData meta)

Constructor. Supply underlying metadata.

Method Detail

getForeignKey

public ForeignKey getForeignKey()

Return the foreign key to the related object.

setForeignKey

public void setForeignKey(ForeignKey fk)

Set the foreign key to the related object.

getMappingType

public String getMappingType()

Description copied from interface: Mapping

Return the abbreviated name of this mapping, or the full class name if it is a custom mapping.

toMappingInfo

public void toMappingInfo(MappingInfo info)

Description copied from interface: Mapping

Serialize this mapping to a simple MappingInfo instance for transfer to XML or some other format.

Overrides:

toMappingInfo in class AbstractCollectionFieldMapping

fromMappingInfo

public void fromMappingInfo(MappingInfo info,
                            boolean adapt)

Description copied from class: AbstractFieldMapping

The default implementation will raise warnings for any mapping attributes that are declared but not in the list of the valid attributes for this mapping.

Overrides:

fromMappingInfo in class ContainerFieldMapping

Following copied from class: kodo.jdbc.meta.AbstractFieldMapping

See Also:

AbstractFieldMapping.addMappingInfoAttributes(java.util.Collection)

addMappingInfoAttributes

public void addMappingInfoAttributes(Collection attrs)

Description copied from interface: Mapping

Add all mapping attributes names used by this mapping to the given collection. For foreign key attributes, add the prefix.

Overrides:

addMappingInfoAttributes in class AbstractCollectionFieldMapping

map

public boolean map()

Description copied from interface: Mapping

Map a new instance of this mapping type. If the underlying metadata cannot be mapped using this type, return false.

Overrides:

map in class ContainerFieldMapping

reverseMap

public void reverseMap(SchemaGroup schema,
                       ReverseMappingTool tool)

Description copied from interface: Mapping

Create mappings from the schema, using the given tool. Implement this method if you want the class mapping to be a candidate when reverse-mapping a schema to java classes. Note that this method will be invoked on a template instance, so you cannot rely on the metadata or owning repository being set.

Overrides:

reverseMap in class AbstractFieldMapping

isJoinTable

public static boolean isJoinTable(Table table,
                                  ReverseMappingTool tool)

Return true if the given table matches the pattern for a join table.

refSchemaComponents

public void refSchemaComponents()

Description copied from interface: Mapping

Increment the reference count of all used schema components.

Overrides:

refSchemaComponents in class AbstractCollectionFieldMapping

getColumns

public Column[] getColumns()

Description copied from interface: FieldMapping

Return the data columns for this mapping. This corresponds to the field-order foreign key columns in relations.

getDataStoreValue

public Object getDataStoreValue(Object val)

Description copied from interface: FieldMapping

Translate the given external field value to its datastore equivalent. If the mapping occupies multiple columns in the datastore, return an object array, else return a single object. Simply returns the given object by default.

Overrides:

getDataStoreValue in class AbstractFieldMapping

joinRelation

public Joins joinRelation(Joins joins)

Description copied from interface: FieldMapping

Join this value's table to the table for the related first class object type, if any. Does nothing by default.

Overrides:

joinRelation in class AbstractFieldMapping

supportsSelect

public boolean supportsSelect(Select sel,
                              int type,
                              KodoStateManager sm,
                              JDBCStoreManager store,
                              JDBCFetchConfiguration fetch)

Description copied from interface: FieldMapping

Return true if this mapping can perform the given select type. By default, returns true only if the type is Select#JOINLESS and the given select instance already has this field's table selected. The given state manager may be null if selecting multiple instances.

Overrides:

supportsSelect in class AbstractCollectionFieldMapping

selectProjection

protected void selectProjection(Select sel,
                                JDBCStoreManager store,
                                JDBCFetchConfiguration fetch,
                                int eagerMode,
                                Joins joins)

Description copied from class: AbstractCollectionFieldMapping

Implement this method to select the projection of this field. Elements of the result will be loaded with FieldMapping.loadProjection(kodo.jdbc.runtime.JDBCStoreManager, kodo.jdbc.runtime.JDBCFetchConfiguration, kodo.jdbc.sql.Result, kodo.jdbc.sql.Joins).

Overrides:

selectProjection in class AbstractCollectionFieldMapping

loadProjection

public Object loadProjection(JDBCStoreManager store,
                             JDBCFetchConfiguration fetch,
                             Result res,
                             Joins joins)
                      throws SQLException

Description copied from interface: FieldMapping

Load this field value using the given result. This method will only be called if this field does not represent a FCO relation. The result will contain the columns from FieldMapping.getColumns().

insert

public void insert(KodoStateManager sm,
                   RowManager rm)
            throws SQLException

Description copied from interface: Mapping

Set values for the mapping into the proper rows. For class mappings, this method will be called only after the corresponding method has been called for all fields of this mapping.

Overrides:

insert in class ContainerFieldMapping

update

public void update(KodoStateManager sm,
                   RowManager rm)
            throws SQLException

Description copied from interface: Mapping

Set values for the mapping into the proper rows.

Overrides:

update in class ContainerFieldMapping

Following copied from interface: kodo.jdbc.meta.Mapping

See Also:

Mapping.insert(kodo.runtime.KodoStateManager, kodo.jdbc.sql.RowManager)

delete

public void delete(KodoStateManager sm,
                   RowManager rm)
            throws SQLException

Description copied from class: ReferenceFieldMapping

Delete the row for this object if the reference foreign key exists.

Overrides:

delete in class ContainerFieldMapping

Following copied from interface: kodo.jdbc.meta.Mapping

See Also:

Mapping.insert(kodo.runtime.KodoStateManager, kodo.jdbc.sql.RowManager)

nullEmbedded

public void nullEmbedded(KodoStateManager sm,
                         RowManager rm)
                  throws SQLException

Description copied from interface: FieldMapping

Null values for the mapping. This method is used when embedded values are nulled or replaced. The given state manager will be the owner of the object whose fields are now being nulled.

Overrides:

nullEmbedded in class ContainerFieldMapping

Following copied from interface: kodo.jdbc.meta.FieldMapping

See Also:

Mapping.insert(kodo.runtime.KodoStateManager, kodo.jdbc.sql.RowManager)

deleteEmbedded

public void deleteEmbedded(KodoStateManager sm,
                           RowManager rm)
                    throws SQLException

Description copied from interface: FieldMapping

Delete values for the mapping. This method is used when embedded values are deleted. The given state manager will be the owner of the object that is being deleted.

Overrides:

deleteEmbedded in class AbstractFieldMapping

Following copied from interface: kodo.jdbc.meta.FieldMapping

See Also:

Mapping.insert(kodo.runtime.KodoStateManager, kodo.jdbc.sql.RowManager)