org.apache.openjpa.jdbc.meta
Class FieldMapping

java.lang.Object
  org.apache.openjpa.meta.Extensions
      org.apache.openjpa.meta.FieldMetaData
          org.apache.openjpa.jdbc.meta.FieldMapping

All Implemented Interfaces:

Serializable, FieldStrategy, Strategy, ValueMapping, Commentable, MetaDataContext, MetaDataModes, ValueMetaData

public class FieldMapping
extends FieldMetaData
implements ValueMapping, FieldStrategy

Specialization of metadata for relational databases.

Author:

Abe White

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.openjpa.meta.FieldMetaData

MANAGE_NONE, MANAGE_PERSISTENT, MANAGE_TRANSACTIONAL, NULL_DEFAULT, NULL_EXCEPTION, NULL_NONE, NULL_UNSET

Fields inherited from class org.apache.openjpa.meta.Extensions

OPENJPA

Fields inherited from interface org.apache.openjpa.jdbc.meta.ValueMapping

JOIN_EXPECTED_INVERSE, JOIN_FORWARD, JOIN_INVERSE, POLY_FALSE, POLY_JOINABLE, POLY_TRUE

Fields inherited from interface org.apache.openjpa.meta.ValueMetaData

CASCADE_AUTO, CASCADE_IMMEDIATE, CASCADE_NONE, MAPPED_BY_PK

Fields inherited from interface org.apache.openjpa.meta.MetaDataModes

MODE_MAPPING, MODE_MAPPING_INIT, MODE_META, MODE_NONE, MODE_QUERY

Fields inherited from interface org.apache.openjpa.lib.xml.Commentable

EMPTY_COMMENTS

Constructor Summary

FieldMapping(String name, Class type, ClassMapping owner)
Constructor.

Method Summary

void	appendIsEmpty(SQLBuffer sql, Select sel, Joins joins) Append a where clause to the given statement checking if this value is empty.
void	appendIsNotEmpty(SQLBuffer sql, Select sel, Joins joins) Append a where clause to the given statement checking if this value is not empty.
void	appendIsNotNull(SQLBuffer sql, Select sel, Joins joins) Append a where clause to the given statement checking if this value is not null.
void	appendIsNull(SQLBuffer sql, Select sel, Joins joins) Append a where clause to the given statement checking if this value is null.
void	appendSize(SQLBuffer sql, Select sel, Joins joins) Append a where clause to the given statement checking the size of the value.
void	clearMapping() Clear mapping information, including strategy.
void	copy(FieldMetaData fmd) Copy state from the given field to this one.
void	copyMappingInfo(FieldMapping fm) Copy mapping info from the given instance to this one.
void	copyMappingInfo(ValueMapping vm) Copy mapping info from the given instance to this one.
void	customDelete(OpenJPAStateManager sm, JDBCStore store) Override this method to customize flushing this mapping.
void	customInsert(OpenJPAStateManager sm, JDBCStore store) Override this method to customize flushing this mapping.
void	customUpdate(OpenJPAStateManager sm, JDBCStore store) Override this method to customize flushing this mapping.
void	delete(OpenJPAStateManager sm, JDBCStore store, RowManager rm) Set the where values appropriately to delete the proper instance, and set all relations on non-secondary tables as updates.
void	deleteRow(OpenJPAStateManager sm, JDBCStore store, RowManager rm) Delete the row for this object if the reference foreign key exists.
String	getAlias() Return the alias of this strategy.
ColumnIO	getColumnIO() I/O information on the foreign key, or columns if this value doesn't have a key.
Column[]	getColumns() The columns that hold the data for this value.
ClassMapping	getDeclaredTypeMapping() Convenience method to perform cast from ValueMetaData.getDeclaredTypeMetaData().
ClassMapping	getDeclaringMapping() Convenience method to perform cast from FieldMetaData.getDeclaringMetaData()
ClassMapping	getDefiningMapping() Convenience method to perform cast from FieldMetaData.getDefiningMetaData()
int	getEagerFetchMode() The eager fetch mode, as one of the eager constants in JDBCFetchConfiguration.
ValueMapping	getElementMapping() Convenience method to perform cast from FieldMetaData.getElement()
ClassMapping	getEmbeddedMapping() Convenience method to perform cast from ValueMetaData.getEmbeddedMetaData().
FieldMapping	getFieldMapping() Convenience method to perform cast from ValueMetaData.getFieldMetaData().
ForeignKey	getForeignKey() If this value joins to another record, the foreign key.
ForeignKey	getForeignKey(ClassMapping target) Return an equivalent of this value's foreign key, but joining to the given target, which may be an unjoined subclass of this value's related type.
ValueHandler	getHandler() The handler used for this value, or null if none.
ClassMapping[]	getIndependentTypeMappings() Return all independently-mapped joinable types for this value, depending on whether this value is polymorphic and how the related type is mapped.
FieldMapping[]	getInverseMappings() Convenience method to perform cast from FieldMetaData.getInverseMetaDatas()
ColumnIO	getJoinColumnIO() I/O information on the join columns.
int	getJoinDirection() The join direction.
ForeignKey	getJoinForeignKey() Foreign key linking the field table to the class' primary table.
Index	getJoinIndex() Index on join foreign key columns.
Unique	getJoinUnique() Unique constraint on join foreign key columns.
ValueMapping	getKeyMapping() Convenience method to perform cast from FieldMetaData.getKey()
FieldMapping	getMappedByMapping() Convenience method to perform cast from FieldMetaData.getMappedByMetaData()
FieldMappingInfo	getMappingInfo() Raw mapping data about field's join to parent table, as well as miscellaneous specialized columns like order column.
MappingRepository	getMappingRepository() Convenience method to perform cast from FieldMetaData.getRepository()
Column	getOrderColumn() Field order column, if any.
ColumnIO	getOrderColumnIO() I/O information for order column.
int	getPolymorphic() The degree to which this relation is polymorphic.
Row	getRow(OpenJPAStateManager sm, JDBCStore store, RowManager rm, int action) Return the row to use for this field.
int	getSelectSubclasses() Return the org.apache.openjpa.sql.Select subclasses constant for loading this relation, based on how the related type is mapped, whether this relation is polymorphic, and whether it is configured to use class criteria.
FieldStrategy	getStrategy() The strategy used to map this mapping.
Table	getTable() The mapping's primary table.
ClassMapping	getTypeMapping() Convenience method to perform cast from ValueMetaData.getTypeMetaData().
boolean	getUseClassCriteria() Whether to use class criteria when joining to related type.
Index	getValueIndex() Index on this value's columns, or null if none.
ValueMappingInfo	getValueInfo() Raw mapping data.
FieldMapping	getValueMappedByMapping() Convenience method to perform cast from ValueMetaData.getValueMappedByMetaData().
ValueMapping	getValueMapping() Convenience method to perform cast from FieldMetaData.getValue()
Unique	getValueUnique() Unique constraint on this value's columns, or null if none.
void	initialize() Perform caching and other initialization operations.
void	insert(OpenJPAStateManager sm, JDBCStore store, RowManager rm) Set values for the mapping into the proper rows.
Boolean	isCustomDelete(OpenJPAStateManager sm, JDBCStore store) Return Boolean.FALSE if this mapping does not customize the delete process, Boolean.TRUE if it does, or null if it does customize the delete, but also relies on the standard delete method being called.
Boolean	isCustomInsert(OpenJPAStateManager sm, JDBCStore store) Return Boolean.FALSE if this mapping does not customize the insert process, Boolean.TRUE if it does, or null if it does customize the insert, but also relies on the standard insert method being called.
Boolean	isCustomUpdate(OpenJPAStateManager sm, JDBCStore store) Return Boolean.FALSE if this mapping does not customize the update process, Boolean.TRUE if it does, or null if it does customize the update, but also relies on the standard update method being called.
boolean	isEagerSelectToMany() Whether the eager joins or selects used by this field are to-many.
boolean	isJoinOuter() Whether to use an outer join from the class' primary table.
boolean	isMapped() Returns true if field class does not use the "none" strategy (including if it has a null strategy, and therefore is probably in the process of being mapped).
boolean	isVersionable() Return true if this field can be used as part of a state image for optimistic locking.
Joins	join(Joins joins, boolean forceOuter) Join this value to the class table.
Joins	join(Joins joins, boolean forceOuter, boolean toMany) Joins from the owning class' table to the table where this field lies using the join foreign key.
Joins	join(Select sel) Return any joins needed to get from the primary table to this table.
Joins	joinKey(Joins joins, boolean forceOuter) Join the key value to the class table.
Joins	joinKeyRelation(Joins joins, boolean forceOuter, boolean traverse) Join this value's table to the table for the related first class object key type, if any.
Joins	joinRelation(Joins joins, boolean forceOuter, boolean traverse) Join this value's table to the table for the related first class object type, if any.
void	load(OpenJPAStateManager sm, JDBCStore store, JDBCFetchConfiguration fetch) Load secondary data using a connection from the store manager.
void	load(OpenJPAStateManager sm, JDBCStore store, JDBCFetchConfiguration fetch, Result res) Load virtual row data; the given result is not guaranteed to contain data for this field, so the field mapping should make sure the result contains its needed column data before loading.
void	loadEagerJoin(OpenJPAStateManager sm, JDBCStore store, JDBCFetchConfiguration fetch, Result res) Load the joined eager result.
Object	loadEagerParallel(OpenJPAStateManager sm, JDBCStore store, JDBCFetchConfiguration fetch, Object res) Load the batched eager result.
Object	loadKeyProjection(JDBCStore store, JDBCFetchConfiguration fetch, Result res, Joins joins) Load this field's key value using the given result.
Object	loadProjection(JDBCStore store, JDBCFetchConfiguration fetch, Result res, Joins joins) Load this field value using the given result.
void	map(boolean adapt) Map the owning mapping using this strategy.
void	mapConstraints(String name, boolean adapt) Map indexes and constraints for this value, using the current ValueMappingInfo.
void	mapJoin(boolean adapt, boolean joinRequired) Map this field to its table, optionally requiring that it be in another table.
void	mapPrimaryKey(boolean adapt) Maps the primary key on the secondary table for this field, if the user's defaults create one.
void	orderLocal(Select sel, ClassMapping elem, Joins joins) Add ordering to the given select for all non-relation order values, including the synthetic order column, if any.
void	orderRelation(Select sel, ClassMapping elem, Joins joins) Add ordering to the given select for all relation-based values.
void	refSchemaComponents() Increment the reference count of used schema components.
boolean	resolve(int mode) Resolve and validate metadata.
int	select(Select sel, OpenJPAStateManager sm, JDBCStore store, JDBCFetchConfiguration fetch, int eagerMode) Select the virtual row columns of this mapping.
void	selectEagerJoin(Select sel, OpenJPAStateManager sm, JDBCStore store, JDBCFetchConfiguration fetch, int eagerMode) Fill in joined select to related objects.
void	selectEagerParallel(SelectExecutor sel, OpenJPAStateManager sm, JDBCStore store, JDBCFetchConfiguration fetch, int eagerMode) Fill in parallel eager select for related objects.
void	setColumnIO(ColumnIO io) I/O information on the foreign key, or columns if this value doesn't have a key.
void	setColumns(Column[] cols) The columns that hold the data for this value.
void	setEagerFetchMode(int mode) The eager fetch mode, as one of the eager constants in JDBCFetchConfiguration.
void	setFieldMapping(FieldMapping owner) Set the class mapping using this strategy.
void	setForeignKey(ForeignKey fk) If this value joins to another record, the foreign key.
void	setForeignKey(Row row, OpenJPAStateManager sm) Sets this value's foreign key to the given related object.
void	setHandler(ValueHandler handler) The handler used for this value, or null if none.
void	setJoinColumnIO(ColumnIO io) I/O information on the join columns.
void	setJoinDirection(int direction) The join direction.
void	setJoinForeignKey(ForeignKey fk) Foreign key linking the field table to the class' primary table.
void	setJoinIndex(Index idx) Index on join foreign key columns.
void	setJoinOuter(boolean outer) Whether to use an outer join from the class' primary table.
void	setJoinUnique(Unique unq) Unique constraint on join foreign key columns.
void	setOrderColumn(Column order) Field order column, if any.
void	setOrderColumnIO(ColumnIO io) I/O information for order column.
void	setPolymorphic(int poly) The degree to which this relation is polymorphic.
void	setStrategy(FieldStrategy strategy, Boolean adapt) The strategy used to map this mapping.
void	setUseClassCriteria(boolean criteria) Whether to use class criteria when joining to related type.
void	setValueIndex(Index idx) Index on this value's columns, or null if none.
void	setValueUnique(Unique unq) Unique constraint on this value's columns, or null if none.
int	supportsSelect(Select sel, int type, OpenJPAStateManager sm, JDBCStore store, JDBCFetchConfiguration fetch) Return whether this mapping can perform the given select type.
void	syncMappingInfo() Update MappingInfo with our current mapping information.
Object	toDataStoreValue(Object val, JDBCStore store) Translate the given external field value to its datastore equivalent.
Object	toKeyDataStoreValue(Object val, JDBCStore store) Translate the given key value to its datastore equivalent.
void	update(OpenJPAStateManager sm, JDBCStore store, RowManager rm) Set values for the mapping into the proper rows.
protected boolean	validateDataStoreExtensionPrefix(String prefix) Return true if extensions starting with the given official datastore prefix should be validated for this runtime.
void	where(OpenJPAStateManager sm, JDBCStore store, RowManager rm, Object prevValue) Add a WHERE condition to the row for this field such that the field's current DB value must equal the given previous value.
void	whereForeignKey(Row row, OpenJPAStateManager sm) Sets this value's foreign key to the given related object.
void	wherePrimaryKey(Select sel, OpenJPAStateManager sm, JDBCStore store) Add a wherePrimaryKey or whereForeignKey condition to the given select, depending on whether we have a join foreign key.

Methods inherited from class org.apache.openjpa.meta.FieldMetaData

addEmbeddedMetaData, addExtensionKeys, backingMember, compareTo, copy, equals, getBackingMember, getCascadeAttach, getCascadeDelete, getCascadePersist, getCascadeRefresh, getComments, getCustomFetchGroups, getDeclaredIndex, getDeclaredType, getDeclaredTypeCode, getDeclaredTypeMetaData, getDeclaringMetaData, getDeclaringType, getDefiningMetaData, getElement, getEmbeddedMetaData, getExternalizer, getExternalizerMethod, getExternalValue, getExternalValueMap, getExternalValues, getFactory, getFactoryMethod, getFieldMetaData, getFieldValue, getFieldValueMap, getFullName, getFullName, getIndex, getInitializer, getInverse, getInverseMetaDatas, getKey, getListingIndex, getLoadFetchGroup, getManagement, getMappedBy, getMappedByMetaData, getName, getNullValue, getObjectIdFieldType, getObjectIdFieldTypeCode, getOrderDeclaration, getOrders, getPrimaryKeyIndex, getProxyType, getRepository, getResolve, getType, getTypeCode, getTypeMetaData, getTypeOverride, getUpdateStrategy, getValue, getValueMappedBy, getValueMappedByMetaData, getValueSequenceMetaData, getValueSequenceName, getValueStrategy, isDeclaredTypePC, isDefaultFetchGroupExplicit, isEmbedded, isEmbeddedPC, isExplicit, isExternalized, isInDefaultFetchGroup, isInFetchGroup, isLRS, isPrimaryKey, isSerialized, isTransient, isTypePC, isVersion, order, setCascadeAttach, setCascadeDelete, setCascadePersist, setCascadeRefresh, setComments, setDeclaredIndex, setDeclaredType, setDeclaredTypeCode, setDeclaringType, setDefaultFetchGroupExplicit, setEmbedded, setExplicit, setExternalizer, setExternalValues, setFactory, setInDefaultFetchGroup, setIndex, setInFetchGroup, setInitializer, setInverse, setListingIndex, setLoadFetchGroup, setLRS, setManagement, setMappedBy, setNullValue, setOrderDeclaration, setOrders, setPrimaryKey, setPrimaryKeyIndex, setProxyType, setResolve, setResolve, setSerialized, setTransient, setType, setTypeCode, setTypeOverride, setUpdateStrategy, setUsesImplData, setUsesIntermediate, setValueMappedBy, setValueSequenceName, setValueStrategy, setVersion, toString, usesImplData, usesIntermediate

Methods inherited from class org.apache.openjpa.meta.Extensions

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.openjpa.meta.ValueMetaData

addEmbeddedMetaData, copy, getCascadeAttach, getCascadeDelete, getCascadePersist, getCascadeRefresh, getDeclaredType, getDeclaredTypeCode, getDeclaredTypeMetaData, getEmbeddedMetaData, getFieldMetaData, getResolve, getType, getTypeCode, getTypeMetaData, getTypeOverride, getValueMappedBy, getValueMappedByMetaData, isDeclaredTypePC, isEmbedded, isEmbeddedPC, isSerialized, isTypePC, setCascadeAttach, setCascadeDelete, setCascadePersist, setCascadeRefresh, setDeclaredType, setDeclaredTypeCode, setEmbedded, setResolve, setResolve, setSerialized, setType, setTypeCode, setTypeOverride, setValueMappedBy

Methods inherited from interface org.apache.openjpa.meta.MetaDataContext

getRepository

Constructor Detail

FieldMapping

public FieldMapping(String name,
                    Class type,
                    ClassMapping owner)

Constructor.

Method Detail

getMappingInfo

public FieldMappingInfo getMappingInfo()

Raw mapping data about field's join to parent table, as well as miscellaneous specialized columns like order column.

getStrategy

public FieldStrategy getStrategy()

The strategy used to map this mapping.

setStrategy

public void setStrategy(FieldStrategy strategy,
                        Boolean adapt)

The strategy used to map this mapping. The adapt parameter determines whether to adapt when mapping the strategy; use null if the strategy should not be mapped.

getTable

public Table getTable()

The mapping's primary table.

getJoinColumnIO

public ColumnIO getJoinColumnIO()

I/O information on the join columns.

setJoinColumnIO

public void setJoinColumnIO(ColumnIO io)

I/O information on the join columns.

getJoinForeignKey

public ForeignKey getJoinForeignKey()

Foreign key linking the field table to the class' primary table.

setJoinForeignKey

public void setJoinForeignKey(ForeignKey fk)

Foreign key linking the field table to the class' primary table.

getJoinUnique

public Unique getJoinUnique()

Unique constraint on join foreign key columns.

setJoinUnique

public void setJoinUnique(Unique unq)

Unique constraint on join foreign key columns.

getJoinIndex

public Index getJoinIndex()

Index on join foreign key columns.

setJoinIndex

public void setJoinIndex(Index idx)

Index on join foreign key columns.

isJoinOuter

public boolean isJoinOuter()

Whether to use an outer join from the class' primary table.

setJoinOuter

public void setJoinOuter(boolean outer)

Whether to use an outer join from the class' primary table.

getOrderColumn

public Column getOrderColumn()

Field order column, if any.

setOrderColumn

public void setOrderColumn(Column order)

Field order column, if any.

getOrderColumnIO

public ColumnIO getOrderColumnIO()

I/O information for order column.

setOrderColumnIO

public void setOrderColumnIO(ColumnIO io)

I/O information for order column.

refSchemaComponents

public void refSchemaComponents()

Increment the reference count of used schema components.

Specified by:

refSchemaComponents in interface ValueMapping

clearMapping

public void clearMapping()

Clear mapping information, including strategy.

Specified by:

clearMapping in interface ValueMapping

syncMappingInfo

public void syncMappingInfo()

Update MappingInfo with our current mapping information.

Specified by:

syncMappingInfo in interface ValueMapping

isMapped

public boolean isMapped()

Returns true if field class does not use the "none" strategy (including if it has a null strategy, and therefore is probably in the process of being mapped).

Overrides:

isMapped in class FieldMetaData

getEagerFetchMode

public int getEagerFetchMode()

The eager fetch mode, as one of the eager constants in JDBCFetchConfiguration.

setEagerFetchMode

public void setEagerFetchMode(int mode)

The eager fetch mode, as one of the eager constants in JDBCFetchConfiguration.

getMappingRepository

public MappingRepository getMappingRepository()

Convenience method to perform cast from FieldMetaData.getRepository()

Specified by:

getMappingRepository in interface ValueMapping

getDefiningMapping

public ClassMapping getDefiningMapping()

Convenience method to perform cast from FieldMetaData.getDefiningMetaData()

getDeclaringMapping

public ClassMapping getDeclaringMapping()

Convenience method to perform cast from FieldMetaData.getDeclaringMetaData()

getKeyMapping

public ValueMapping getKeyMapping()

Convenience method to perform cast from FieldMetaData.getKey()

getElementMapping

public ValueMapping getElementMapping()

Convenience method to perform cast from FieldMetaData.getElement()

getValueMapping

public ValueMapping getValueMapping()

Convenience method to perform cast from FieldMetaData.getValue()

getMappedByMapping

public FieldMapping getMappedByMapping()

Convenience method to perform cast from FieldMetaData.getMappedByMetaData()

getInverseMappings

public FieldMapping[] getInverseMappings()

Convenience method to perform cast from FieldMetaData.getInverseMetaDatas()

resolve

public boolean resolve(int mode)

Description copied from class: FieldMetaData

Resolve and validate metadata. Return true if already resolved.

Specified by:

resolve in interface ValueMetaData

Overrides:

resolve in class FieldMetaData

copyMappingInfo

public void copyMappingInfo(FieldMapping fm)

Copy mapping info from the given instance to this one.

copy

public void copy(FieldMetaData fmd)

Description copied from class: FieldMetaData

Copy state from the given field to this one. Do not copy mapping information.

Overrides:

copy in class FieldMetaData

validateDataStoreExtensionPrefix

protected boolean validateDataStoreExtensionPrefix(String prefix)

Description copied from class: Extensions

Return true if extensions starting with the given official datastore prefix should be validated for this runtime.

Overrides:

validateDataStoreExtensionPrefix in class Extensions

getAlias

public String getAlias()

Description copied from interface: Strategy

Return the alias of this strategy. For custom strategies, return the full class name.

Specified by:

getAlias in interface Strategy

map

public void map(boolean adapt)

Description copied from interface: Strategy

Map the owning mapping using this strategy.

Specified by:

map in interface Strategy

Parameters:

adapt - if true, use the owning mapping's raw mapping info to set its ORM data; if false, ORM data will already be set

mapJoin

public void mapJoin(boolean adapt,
                    boolean joinRequired)

Map this field to its table, optionally requiring that it be in another table. Utility method for use by mapping strategies.

mapPrimaryKey

public void mapPrimaryKey(boolean adapt)

Maps the primary key on the secondary table for this field, if the user's defaults create one. This must be called after this field is mapped so that it's table has its columns set.

initialize

public void initialize()

Description copied from interface: Strategy

Perform caching and other initialization operations. This method is called after Strategy.map(boolean), and after all related components have been mapped as well.

Specified by:

initialize in interface Strategy

insert

public void insert(OpenJPAStateManager sm,
                   JDBCStore store,
                   RowManager rm)
            throws SQLException

Description copied from interface: Strategy

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.

Specified by:

insert in interface Strategy

Throws:

SQLException

update

public void update(OpenJPAStateManager sm,
                   JDBCStore store,
                   RowManager rm)
            throws SQLException

Description copied from interface: Strategy

Set values for the mapping into the proper rows.

Specified by:

update in interface Strategy

Throws:

SQLException

See Also:

Strategy.insert(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore, org.apache.openjpa.jdbc.sql.RowManager)

delete

public void delete(OpenJPAStateManager sm,
                   JDBCStore store,
                   RowManager rm)
            throws SQLException

Description copied from interface: Strategy

Set the where values appropriately to delete the proper instance, and set all relations on non-secondary tables as updates. This allows foreign key analysis.

Specified by:

delete in interface Strategy

Throws:

SQLException

See Also:

Strategy.insert(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore, org.apache.openjpa.jdbc.sql.RowManager)

deleteRow

public void deleteRow(OpenJPAStateManager sm,
                      JDBCStore store,
                      RowManager rm)
               throws SQLException

Delete the row for this object if the reference foreign key exists. Utility method for use by mapping strategies.

Throws:

SQLException

getRow

public Row getRow(OpenJPAStateManager sm,
                  JDBCStore store,
                  RowManager rm,
                  int action)
           throws SQLException

Return the row to use for this field. This method is meant only for single-value fields that might reside in a table that is joined to the primary table through the join foreign key. It is not meant for multi-valued fields like collections and maps. The method checks whether we're using an outer join and if so it deletes the field's previous value, then if the field is non-null returns an insert row for the new value. The join foreign key will already be set on the returned row; mapping strategies just need to set their own values. Utility method for use by mapping strategies.

Throws:

SQLException

isCustomInsert

public Boolean isCustomInsert(OpenJPAStateManager sm,
                              JDBCStore store)

Description copied from interface: Strategy

Return Boolean.FALSE if this mapping does not customize the insert process, Boolean.TRUE if it does, or null if it does customize the insert, but also relies on the standard insert method being called. Implement the Strategy.customInsert(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore) method to implement the custom insertion behavior.

Specified by:

isCustomInsert in interface Strategy

isCustomUpdate

public Boolean isCustomUpdate(OpenJPAStateManager sm,
                              JDBCStore store)

Description copied from interface: Strategy

Return Boolean.FALSE if this mapping does not customize the update process, Boolean.TRUE if it does, or null if it does customize the update, but also relies on the standard update method being called. Implement the Strategy.customUpdate(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore) method to override the default update behavior.

Specified by:

isCustomUpdate in interface Strategy

isCustomDelete

public Boolean isCustomDelete(OpenJPAStateManager sm,
                              JDBCStore store)

Description copied from interface: Strategy

Return Boolean.FALSE if this mapping does not customize the delete process, Boolean.TRUE if it does, or null if it does customize the delete, but also relies on the standard delete method being called. Implement the Strategy.customDelete(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore) method to override the default deletion behavior.

Specified by:

isCustomDelete in interface Strategy

customInsert

public void customInsert(OpenJPAStateManager sm,
                         JDBCStore store)
                  throws SQLException

Description copied from interface: Strategy

Override this method to customize flushing this mapping. For classes, this method must also flush all fields. For fields, this method is called after the owning object is inserted, so if this field is in a row with other fields, that row will already exist.

Specified by:

customInsert in interface Strategy

Throws:

SQLException

customUpdate

public void customUpdate(OpenJPAStateManager sm,
                         JDBCStore store)
                  throws SQLException

Description copied from interface: Strategy

Override this method to customize flushing this mapping. For classes, this method must also flush all fields.

Specified by:

customUpdate in interface Strategy

Throws:

SQLException

customDelete

public void customDelete(OpenJPAStateManager sm,
                         JDBCStore store)
                  throws SQLException

Description copied from interface: Strategy

Override this method to customize flushing this mapping. For classes, this method must also flush all fields. For fields, this method will be called after the owning object is deleted.

Specified by:

customDelete in interface Strategy

Throws:

SQLException

setFieldMapping

public void setFieldMapping(FieldMapping owner)

Description copied from interface: FieldStrategy

Set the class mapping using this strategy. This will be called before use.

Specified by:

setFieldMapping in interface FieldStrategy

supportsSelect

public int supportsSelect(Select sel,
                          int type,
                          OpenJPAStateManager sm,
                          JDBCStore store,
                          JDBCFetchConfiguration fetch)

Description copied from interface: FieldStrategy

Return whether this mapping can perform the given select type. Return 0 if the given type is not supported. If the given type is an eager parallel type, return the number of UNIONed selects necessary to fetch the data. Otherwise, return any positive number if the type is supported. The given state manager may be null if selecting multiple instances.

Specified by:

supportsSelect in interface FieldStrategy

See Also:

Select

selectEagerParallel

public void selectEagerParallel(SelectExecutor sel,
                                OpenJPAStateManager sm,
                                JDBCStore store,
                                JDBCFetchConfiguration fetch,
                                int eagerMode)

Description copied from interface: FieldStrategy

Fill in parallel eager select for related objects.

Specified by:

selectEagerParallel in interface FieldStrategy

See Also:

FieldStrategy.select(org.apache.openjpa.jdbc.sql.Select, org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore, org.apache.openjpa.jdbc.kernel.JDBCFetchConfiguration, int)

selectEagerJoin

public void selectEagerJoin(Select sel,
                            OpenJPAStateManager sm,
                            JDBCStore store,
                            JDBCFetchConfiguration fetch,
                            int eagerMode)

Description copied from interface: FieldStrategy

Fill in joined select to related objects.

Specified by:

selectEagerJoin in interface FieldStrategy

See Also:

FieldStrategy.select(org.apache.openjpa.jdbc.sql.Select, org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.jdbc.kernel.JDBCStore, org.apache.openjpa.jdbc.kernel.JDBCFetchConfiguration, int)

isEagerSelectToMany

public boolean isEagerSelectToMany()

Description copied from interface: FieldStrategy

Whether the eager joins or selects used by this field are to-many.

Specified by:

isEagerSelectToMany in interface FieldStrategy

select

public int select(Select sel,
                  OpenJPAStateManager sm,
                  JDBCStore store,
                  JDBCFetchConfiguration fetch,
                  int eagerMode)

Description copied from interface: FieldStrategy

Select the virtual row columns of this mapping.

Specified by:

select in interface FieldStrategy

Parameters:

sel - the select to add to

sm - the instance being loaded, or null if not initialized yet or selecting for multiple instances

store - the current store manager

fetch - fetch configuration

eagerMode - the eager fetch mode to use; this may be more restrictive than the mode of the fetch configuration

Returns:

> 0 if this mapping requires the selected data (if any), 0 if it selected data but does not require it, or < 0 if no data was selected

join

public Joins join(Select sel)

Return any joins needed to get from the primary table to this table.

wherePrimaryKey

public void wherePrimaryKey(Select sel,
                            OpenJPAStateManager sm,
                            JDBCStore store)

Add a wherePrimaryKey or whereForeignKey condition to the given select, depending on whether we have a join foreign key.

orderLocal

public void orderLocal(Select sel,
                       ClassMapping elem,
                       Joins joins)

Add ordering to the given select for all non-relation order values, including the synthetic order column, if any.

Parameters:

elem - the related type we're fetching, or null

joins - the joins to this field's table

orderRelation

public void orderRelation(Select sel,
                          ClassMapping elem,
                          Joins joins)

Add ordering to the given select for all relation-based values.

Parameters:

elem - the related type we're fetching

joins - the joins across the relation

loadEagerParallel

public Object loadEagerParallel(OpenJPAStateManager sm,
                                JDBCStore store,
                                JDBCFetchConfiguration fetch,
                                Object res)
                         throws SQLException

Description copied from interface: FieldStrategy

Load the batched eager result.

Specified by:

loadEagerParallel in interface FieldStrategy

res - originally the Result to load from, but this method may return a processed result form that will be passed to subsequent calls

Throws:

SQLException

loadEagerJoin

public void loadEagerJoin(OpenJPAStateManager sm,
                          JDBCStore store,
                          JDBCFetchConfiguration fetch,
                          Result res)
                   throws SQLException

Description copied from interface: FieldStrategy

Load the joined eager result.

Specified by:

loadEagerJoin in interface FieldStrategy

Throws:

SQLException

load

public void load(OpenJPAStateManager sm,
                 JDBCStore store,
                 JDBCFetchConfiguration fetch,
                 Result res)
          throws SQLException

Description copied from interface: FieldStrategy

Load virtual row data; the given result is not guaranteed to contain data for this field, so the field mapping should make sure the result contains its needed column data before loading.

Specified by:

load in interface FieldStrategy

Throws:

SQLException

load

public void load(OpenJPAStateManager sm,
                 JDBCStore store,
                 JDBCFetchConfiguration fetch)
          throws SQLException

Description copied from interface: FieldStrategy

Load secondary data using a connection from the store manager.

Specified by:

load in interface FieldStrategy

Throws:

SQLException

toDataStoreValue

public Object toDataStoreValue(Object val,
                               JDBCStore store)

Description copied from interface: FieldStrategy

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.

Specified by:

toDataStoreValue in interface FieldStrategy

toKeyDataStoreValue

public Object toKeyDataStoreValue(Object val,
                                  JDBCStore store)

Description copied from interface: FieldStrategy

Translate the given key 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.

Specified by:

toKeyDataStoreValue in interface FieldStrategy

appendIsEmpty

public void appendIsEmpty(SQLBuffer sql,
                          Select sel,
                          Joins joins)

Description copied from interface: FieldStrategy

Append a where clause to the given statement checking if this value is empty. Appends impossible-to-satisfy SQL by default.

Specified by:

appendIsEmpty in interface FieldStrategy

appendIsNotEmpty

public void appendIsNotEmpty(SQLBuffer sql,
                             Select sel,
                             Joins joins)

Description copied from interface: FieldStrategy

Append a where clause to the given statement checking if this value is not empty. Appends always-satisfied SQL by default.

Specified by:

appendIsNotEmpty in interface FieldStrategy

appendIsNull

public void appendIsNull(SQLBuffer sql,
                         Select sel,
                         Joins joins)

Description copied from interface: FieldStrategy

Append a where clause to the given statement checking if this value is null.

Specified by:

appendIsNull in interface FieldStrategy

appendIsNotNull

public void appendIsNotNull(SQLBuffer sql,
                            Select sel,
                            Joins joins)

Description copied from interface: FieldStrategy

Append a where clause to the given statement checking if this value is not null.

Specified by:

appendIsNotNull in interface FieldStrategy

appendSize

public void appendSize(SQLBuffer sql,
                       Select sel,
                       Joins joins)

Description copied from interface: FieldStrategy

Append a where clause to the given statement checking the size of the value.

Specified by:

appendSize in interface FieldStrategy

join

public Joins join(Joins joins,
                  boolean forceOuter)

Description copied from interface: FieldStrategy

Join this value to the class table. Does nothing by default.

Specified by:

join in interface FieldStrategy

joinKey

public Joins joinKey(Joins joins,
                     boolean forceOuter)

Description copied from interface: FieldStrategy

Join the key value to the class table. Does nothing by default.

Specified by:

joinKey in interface FieldStrategy

joinRelation

public Joins joinRelation(Joins joins,
                          boolean forceOuter,
                          boolean traverse)

Description copied from interface: FieldStrategy

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

Specified by:

joinRelation in interface FieldStrategy

traverse - if true, throw proper exception if it is not possible for this mapping to traverse into the related type

joinKeyRelation

public Joins joinKeyRelation(Joins joins,
                             boolean forceOuter,
                             boolean traverse)

Description copied from interface: FieldStrategy

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

Specified by:

joinKeyRelation in interface FieldStrategy

traverse - if true, throw proper exception if it is not possible for this mapping to traverse into the related type

join

public Joins join(Joins joins,
                  boolean forceOuter,
                  boolean toMany)

Joins from the owning class' table to the table where this field lies using the join foreign key. Utility method for use by mapping strategies.

loadProjection

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

Description copied from interface: FieldStrategy

Load this field value using the given result. The result will contain the columns from ValueMapping.getColumns().

Specified by:

loadProjection in interface FieldStrategy

Throws:

SQLException

loadKeyProjection

public Object loadKeyProjection(JDBCStore store,
                                JDBCFetchConfiguration fetch,
                                Result res,
                                Joins joins)
                         throws SQLException

Description copied from interface: FieldStrategy

Load this field's key value using the given result. The result will contain the columns from ValueMapping.getColumns().

Specified by:

loadKeyProjection in interface FieldStrategy

Throws:

SQLException

isVersionable

public boolean isVersionable()

Description copied from interface: FieldStrategy

Return true if this field can be used as part of a state image for optimistic locking.

Specified by:

isVersionable in interface FieldStrategy

where

public void where(OpenJPAStateManager sm,
                  JDBCStore store,
                  RowManager rm,
                  Object prevValue)
           throws SQLException

Description copied from interface: FieldStrategy

Add a WHERE condition to the row for this field such that the field's current DB value must equal the given previous value. Only versionable mappings must implement this method meaningfully.

Specified by:

where in interface FieldStrategy

Throws:

SQLException

getValueInfo

public ValueMappingInfo getValueInfo()

Description copied from interface: ValueMapping

Raw mapping data.

Specified by:

getValueInfo in interface ValueMapping

getHandler

public ValueHandler getHandler()

Description copied from interface: ValueMapping

The handler used for this value, or null if none.

Specified by:

getHandler in interface ValueMapping

setHandler

public void setHandler(ValueHandler handler)

Description copied from interface: ValueMapping

The handler used for this value, or null if none.

Specified by:

setHandler in interface ValueMapping

getFieldMapping

public FieldMapping getFieldMapping()

Description copied from interface: ValueMapping

Convenience method to perform cast from ValueMetaData.getFieldMetaData().

Specified by:

getFieldMapping in interface ValueMapping

getTypeMapping

public ClassMapping getTypeMapping()

Description copied from interface: ValueMapping

Convenience method to perform cast from ValueMetaData.getTypeMetaData().

Specified by:

getTypeMapping in interface ValueMapping

getDeclaredTypeMapping

public ClassMapping getDeclaredTypeMapping()

Description copied from interface: ValueMapping

Convenience method to perform cast from ValueMetaData.getDeclaredTypeMetaData().

Specified by:

getDeclaredTypeMapping in interface ValueMapping

getEmbeddedMapping

public ClassMapping getEmbeddedMapping()

Description copied from interface: ValueMapping

Convenience method to perform cast from ValueMetaData.getEmbeddedMetaData().

Specified by:

getEmbeddedMapping in interface ValueMapping

getValueMappedByMapping

public FieldMapping getValueMappedByMapping()

Description copied from interface: ValueMapping

Convenience method to perform cast from ValueMetaData.getValueMappedByMetaData().

Specified by:

getValueMappedByMapping in interface ValueMapping

getColumns

public Column[] getColumns()

Description copied from interface: ValueMapping

The columns that hold the data for this value.

Specified by:

getColumns in interface ValueMapping

setColumns

public void setColumns(Column[] cols)

Description copied from interface: ValueMapping

The columns that hold the data for this value.

Specified by:

setColumns in interface ValueMapping

getColumnIO

public ColumnIO getColumnIO()

Description copied from interface: ValueMapping

I/O information on the foreign key, or columns if this value doesn't have a key.

Specified by:

getColumnIO in interface ValueMapping

setColumnIO

public void setColumnIO(ColumnIO io)

Description copied from interface: ValueMapping

I/O information on the foreign key, or columns if this value doesn't have a key.

Specified by:

setColumnIO in interface ValueMapping

getForeignKey

public ForeignKey getForeignKey()

Description copied from interface: ValueMapping

If this value joins to another record, the foreign key.

Specified by:

getForeignKey in interface ValueMapping

getForeignKey

public ForeignKey getForeignKey(ClassMapping target)

Description copied from interface: ValueMapping

Return an equivalent of this value's foreign key, but joining to the given target, which may be an unjoined subclass of this value's related type.

Specified by:

getForeignKey in interface ValueMapping

setForeignKey

public void setForeignKey(ForeignKey fk)

Description copied from interface: ValueMapping

If this value joins to another record, the foreign key.

Specified by:

setForeignKey in interface ValueMapping

getJoinDirection

public int getJoinDirection()

Description copied from interface: ValueMapping

The join direction.

Specified by:

getJoinDirection in interface ValueMapping

setJoinDirection

public void setJoinDirection(int direction)

Description copied from interface: ValueMapping

The join direction.

Specified by:

setJoinDirection in interface ValueMapping

setForeignKey

public void setForeignKey(Row row,
                          OpenJPAStateManager sm)
                   throws SQLException

Description copied from interface: ValueMapping

Sets this value's foreign key to the given related object. The object may be null.

Specified by:

setForeignKey in interface ValueMapping

Throws:

SQLException

whereForeignKey

public void whereForeignKey(Row row,
                            OpenJPAStateManager sm)
                     throws SQLException

Description copied from interface: ValueMapping

Sets this value's foreign key to the given related object. The object may be null.

Specified by:

whereForeignKey in interface ValueMapping

Throws:

SQLException

getIndependentTypeMappings

public ClassMapping[] getIndependentTypeMappings()

Description copied from interface: ValueMapping

Return all independently-mapped joinable types for this value, depending on whether this value is polymorphic and how the related type is mapped. Return an empty array if value type is not PC.

Specified by:

getIndependentTypeMappings in interface ValueMapping

getSelectSubclasses

public int getSelectSubclasses()

Description copied from interface: ValueMapping

Return the org.apache.openjpa.sql.Select subclasses constant for loading this relation, based on how the related type is mapped, whether this relation is polymorphic, and whether it is configured to use class criteria.

Specified by:

getSelectSubclasses in interface ValueMapping

getValueUnique

public Unique getValueUnique()

Description copied from interface: ValueMapping

Unique constraint on this value's columns, or null if none.

Specified by:

getValueUnique in interface ValueMapping

setValueUnique

public void setValueUnique(Unique unq)

Description copied from interface: ValueMapping

Unique constraint on this value's columns, or null if none.

Specified by:

setValueUnique in interface ValueMapping

getValueIndex

public Index getValueIndex()

Description copied from interface: ValueMapping

Index on this value's columns, or null if none.

Specified by:

getValueIndex in interface ValueMapping

setValueIndex

public void setValueIndex(Index idx)

Description copied from interface: ValueMapping

Index on this value's columns, or null if none.

Specified by:

setValueIndex in interface ValueMapping

getUseClassCriteria

public boolean getUseClassCriteria()

Description copied from interface: ValueMapping

Whether to use class criteria when joining to related type.

Specified by:

getUseClassCriteria in interface ValueMapping

setUseClassCriteria

public void setUseClassCriteria(boolean criteria)

Description copied from interface: ValueMapping

Whether to use class criteria when joining to related type.

Specified by:

setUseClassCriteria in interface ValueMapping

getPolymorphic

public int getPolymorphic()

Description copied from interface: ValueMapping

The degree to which this relation is polymorphic.

Specified by:

getPolymorphic in interface ValueMapping

setPolymorphic

public void setPolymorphic(int poly)

Description copied from interface: ValueMapping

The degree to which this relation is polymorphic.

Specified by:

setPolymorphic in interface ValueMapping

mapConstraints

public void mapConstraints(String name,
                           boolean adapt)

Description copied from interface: ValueMapping

Map indexes and constraints for this value, using the current ValueMappingInfo. The foreign key or columns of this value must be set before calling this method.

Specified by:

mapConstraints in interface ValueMapping

copyMappingInfo

public void copyMappingInfo(ValueMapping vm)

Description copied from interface: ValueMapping

Copy mapping info from the given instance to this one.

Specified by:

copyMappingInfo in interface ValueMapping