Package org.apache.openjpa.jdbc.kernel

Class JDBCFetchConfigurationImpl

java.lang.Object

org.apache.openjpa.kernel.FetchConfigurationImpl

org.apache.openjpa.jdbc.kernel.JDBCFetchConfigurationImpl

All Implemented Interfaces:

Serializable, Cloneable, EagerFetchModes, JDBCFetchConfiguration, LRSSizes, JoinSyntaxes, FetchConfiguration, LockLevels, LockScopes, QueryFlushModes

Direct Known Subclasses:

TargetFetchConfiguration

public class JDBCFetchConfigurationImpl
extends FetchConfigurationImpl
implements JDBCFetchConfiguration

JDBC extensions to OpenJPA's FetchConfiguration.

Author:

Abe White

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	JDBCFetchConfigurationImpl.JDBCConfigurationState	Configurable JDBC state shared throughout a traversal chain.

Nested classes/interfaces inherited from class org.apache.openjpa.kernel.FetchConfigurationImpl

FetchConfigurationImpl.ConfigurationState

Field Summary

Fields

Modifier and Type	Field	Description
protected final JDBCFetchConfigurationImpl.JDBCConfigurationState	_state

Fields inherited from interface org.apache.openjpa.jdbc.kernel.EagerFetchModes

EAGER_JOIN, EAGER_NONE, EAGER_PARALLEL

Fields inherited from interface org.apache.openjpa.kernel.FetchConfiguration

DEFAULT, FETCH_LOAD, FETCH_NONE, FETCH_REF

Fields inherited from interface org.apache.openjpa.jdbc.sql.JoinSyntaxes

SYNTAX_DATABASE, SYNTAX_SQL92, SYNTAX_TRADITIONAL

Fields inherited from interface org.apache.openjpa.kernel.LockLevels

LOCK_NONE, LOCK_READ, LOCK_WRITE

Fields inherited from interface org.apache.openjpa.kernel.LockScopes

LOCKSCOPE_EXTENDED, LOCKSCOPE_NORMAL

Fields inherited from interface org.apache.openjpa.jdbc.kernel.LRSSizes

SIZE_LAST, SIZE_QUERY, SIZE_UNKNOWN

Fields inherited from interface org.apache.openjpa.kernel.QueryFlushModes

FLUSH_FALSE, FLUSH_TRUE, FLUSH_WITH_CONNECTION

Constructor Summary

Constructors

Modifier	Constructor	Description
	JDBCFetchConfigurationImpl()
protected	JDBCFetchConfigurationImpl(FetchConfigurationImpl.ConfigurationState state, JDBCFetchConfigurationImpl.JDBCConfigurationState jstate)

Method Summary

Modifier and Type	Method	Description
JDBCFetchConfiguration	addFetchInnerJoin(String join)	Adds field to the set of fully-qualified field names to eagerly join when loading objects.
JDBCFetchConfiguration	addFetchInnerJoins(Collection<String> joins)	Adds fields to the set of fully-qualified field names to eagerly join when loading objects.
JDBCFetchConfiguration	addJoin(String join)	Adds field to the set of fully-qualified field names to eagerly join when loading objects.
JDBCFetchConfiguration	addJoins(Collection<String> joins)	Adds fields to the set of fully-qualified field names to eagerly join when loading objects.
JDBCFetchConfiguration	clearJoins()	Clears the set of field names to join when loading data.
void	copy(FetchConfiguration fetch)	Copy the state from the given fetch configuration to this one.
int	getEagerFetchMode()	Return the eager fetch mode.
int	getFetchDirection()	The fetch direction to use as a constant from ResultSet.
Set<String>	getFetchInnerJoins()	Returns the names of the inner fetch joins that this component will use when loading objects.
boolean	getIgnoreDfgForFkSelect()	Affirms if foreign key for a relation field will be pre-fetched as part of the owning object irrespective of whether the field is included in the default fetch group of this fetch configuration.
int	getIsolation()	The isolation level for queries issued to the database.
Set<String>	getJoins()	Returns the names of the joins that this component will use when loading objects.
int	getJoinSyntax()	The join syntax to use.
int	getLRSSize()	The large result set size mode to use.
int	getResultSetType()	The result set type to use as a constant from ResultSet.
int	getSubclassFetchMode()	Return the subclass fetch mode.
int	getSubclassFetchMode(ClassMapping cls)	Return the effective subclass fetch mode for the given type.
boolean	hasFetchInnerJoin(String field)	Return true if the given fully-qualified inner fetch join has been added.
boolean	hasJoin(String field)	Return true if the given fully-qualified join has been added.
protected FetchConfigurationImpl	newInstance(FetchConfigurationImpl.ConfigurationState state)	Return a new hollow instance.
ResultList<?>	newResultList(ResultObjectProvider rop)	Return a new result list for the current fetch configuration.
JDBCFetchConfiguration	removeJoin(String field)	Removes field to the set of fully-qualified field names to eagerly join when loading objects.
JDBCFetchConfiguration	removeJoins(Collection<String> joins)	Removes fields from the set of fully-qualified field names to eagerly join when loading objects.
void	setContext(StoreContext ctx)	Called automatically by the system to associate the fetch configuration with a context before use.
JDBCFetchConfiguration	setEagerFetchMode(int mode)	Set the eager fetch mode.
JDBCFetchConfiguration	setFetchDirection(int direction)	The fetch direction to use as a constant from ResultSet.
void	setIgnoreDfgForFkSelect(boolean b)	Affirms if foreign key for a relation field will be pre-fetched as part of the owning object irrespective of whether the field is included in the default fetch group of this fetch configuration.
JDBCFetchConfiguration	setIsolation(int level)	The isolation level for queries issued to the database.
JDBCFetchConfiguration	setJoinSyntax(int syntax)	The join syntax to use.
JDBCFetchConfiguration	setLRSSize(int size)	The large result set size mode to use.
JDBCFetchConfiguration	setResultSetType(int type)	The result set type to use as a constant from ResultSet.
JDBCFetchConfiguration	setSubclassFetchMode(int mode)	Set the subclass fetch mode.
JDBCFetchConfiguration	traverseJDBC(FieldMetaData fm)	Convenience method to cast traversal to store-specific type.

Methods inherited from class org.apache.openjpa.kernel.FetchConfigurationImpl

addFetchGroup, addFetchGroups, addField, addFields, clearFetchGroups, clearFields, clone, getCacheRetrieveMode, getCacheStoreMode, getContext, getExtendedPathLookup, getFetchBatchSize, getFetchGroups, getFields, getFlushBeforeQueries, getHint, getHints, getLockScope, getLockTimeout, getMaxFetchDepth, getQueryCacheEnabled, getQueryTimeout, getReadLockLevel, getRootClasses, getRootInstances, getSupportedHints, getWriteLockLevel, hasFetchGroup, hasFetchGroupAll, hasFetchGroupDefault, hasField, isDefaultPUFetchGroupConfigurationOnly, isFetchConfigurationSQLCacheAdmissible, isHintSet, lock, populateHintSetter, populateHintSetter, removeFetchGroup, removeFetchGroups, removeField, removeFields, removeHint, removeHint, requiresFetch, requiresLoad, resetFetchGroups, setCacheRetrieveMode, setCacheStoreMode, setExtendedPathLookup, setFetchBatchSize, setFlushBeforeQueries, setHint, setHint, setLockScope, setLockTimeout, setMaxFetchDepth, setQueryCacheEnabled, setQueryTimeout, setReadLockLevel, setRootClasses, setRootInstances, setWriteLockLevel, toString, toString, traverse, unlock

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.openjpa.kernel.FetchConfiguration

addFetchGroup, addFetchGroups, addField, addFields, clearFetchGroups, clearFields, clone, getCacheRetrieveMode, getCacheStoreMode, getContext, getExtendedPathLookup, getFetchBatchSize, getFetchGroups, getFields, getFlushBeforeQueries, getHint, getHints, getLockScope, getLockTimeout, getMaxFetchDepth, getQueryCacheEnabled, getQueryTimeout, getReadLockLevel, getRootClasses, getRootInstances, getWriteLockLevel, hasFetchGroup, hasField, isDefaultPUFetchGroupConfigurationOnly, isFetchConfigurationSQLCacheAdmissible, isHintSet, lock, removeFetchGroup, removeFetchGroups, removeField, removeFields, requiresFetch, requiresLoad, resetFetchGroups, setCacheRetrieveMode, setCacheStoreMode, setExtendedPathLookup, setFetchBatchSize, setFlushBeforeQueries, setHint, setHint, setLockScope, setLockTimeout, setMaxFetchDepth, setQueryCacheEnabled, setQueryTimeout, setReadLockLevel, setRootClasses, setRootInstances, setWriteLockLevel, traverse, unlock

Field Details

_state

protected final JDBCFetchConfigurationImpl.JDBCConfigurationState _state

Constructor Details

JDBCFetchConfigurationImpl

public JDBCFetchConfigurationImpl()

JDBCFetchConfigurationImpl

protected JDBCFetchConfigurationImpl(FetchConfigurationImpl.ConfigurationState state,
 JDBCFetchConfigurationImpl.JDBCConfigurationState jstate)

Method Details

newInstance

protected FetchConfigurationImpl newInstance(FetchConfigurationImpl.ConfigurationState state)

Description copied from class: FetchConfigurationImpl

Return a new hollow instance.

Overrides:

newInstance in class FetchConfigurationImpl

setContext

public void setContext(StoreContext ctx)

Description copied from interface: FetchConfiguration

Called automatically by the system to associate the fetch configuration with a context before use. The fetch configuration properties should be synchronized with the context's configuration object. Subclasses for specific back ends cannot rely on the context's configuration implementing their back end's configuration sub-interface.

Specified by:

setContext in interface FetchConfiguration

Overrides:

setContext in class FetchConfigurationImpl

copy

public void copy(FetchConfiguration fetch)

Description copied from interface: FetchConfiguration

Copy the state from the given fetch configuration to this one.

Specified by:

copy in interface FetchConfiguration

Overrides:

copy in class FetchConfigurationImpl

getIgnoreDfgForFkSelect

public boolean getIgnoreDfgForFkSelect()

Description copied from interface: JDBCFetchConfiguration

Affirms if foreign key for a relation field will be pre-fetched as part of the owning object irrespective of whether the field is included in the default fetch group of this fetch configuration.
By default, foreign key for a relation field is pre-fetched as part of the owning object only if the field in included in the default fetch group of this fetch configuration.

Specified by:

getIgnoreDfgForFkSelect in interface JDBCFetchConfiguration

setIgnoreDfgForFkSelect

public void setIgnoreDfgForFkSelect(boolean b)

Description copied from interface: JDBCFetchConfiguration

Affirms if foreign key for a relation field will be pre-fetched as part of the owning object irrespective of whether the field is included in the default fetch group of this fetch configuration.
By default, foreign key for a relation field is pre-fetched as part of the owning object only if the field in included in the default fetch group of this fetch configuration.

Specified by:

setIgnoreDfgForFkSelect in interface JDBCFetchConfiguration

getEagerFetchMode

public int getEagerFetchMode()

Description copied from interface: JDBCFetchConfiguration

Return the eager fetch mode. Defaults to the openjpa.jdbc.EagerFetchMode setting.

Specified by:

getEagerFetchMode in interface JDBCFetchConfiguration

setEagerFetchMode

public JDBCFetchConfiguration setEagerFetchMode(int mode)

Description copied from interface: JDBCFetchConfiguration

Set the eager fetch mode. Defaults to the openjpa.jdbc.EagerFetchMode setting.

Specified by:

setEagerFetchMode in interface JDBCFetchConfiguration

getSubclassFetchMode

public int getSubclassFetchMode()

Description copied from interface: JDBCFetchConfiguration

Return the subclass fetch mode. Defaults to the openjpa.jdbc.SubclassFetchMode setting.

Specified by:

getSubclassFetchMode in interface JDBCFetchConfiguration

getSubclassFetchMode

public int getSubclassFetchMode(ClassMapping cls)

Description copied from interface: JDBCFetchConfiguration

Return the effective subclass fetch mode for the given type.

Specified by:

getSubclassFetchMode in interface JDBCFetchConfiguration

setSubclassFetchMode

public JDBCFetchConfiguration setSubclassFetchMode(int mode)

Description copied from interface: JDBCFetchConfiguration

Set the subclass fetch mode. Defaults to the openjpa.jdbc.SubclassFetchMode setting.

Specified by:

setSubclassFetchMode in interface JDBCFetchConfiguration

getResultSetType

public int getResultSetType()

Description copied from interface: JDBCFetchConfiguration

The result set type to use as a constant from ResultSet. Defaults to the openjpa.jdbc.ResultSetType setting.

Specified by:

getResultSetType in interface JDBCFetchConfiguration

setResultSetType

public JDBCFetchConfiguration setResultSetType(int type)

Description copied from interface: JDBCFetchConfiguration

The result set type to use as a constant from ResultSet. Defaults to the openjpa.jdbc.ResultSetType setting.

Specified by:

setResultSetType in interface JDBCFetchConfiguration

getFetchDirection

public int getFetchDirection()

Description copied from interface: JDBCFetchConfiguration

The fetch direction to use as a constant from ResultSet. Defaults to the openjpa.jdbc.FetchDirection setting.

Specified by:

getFetchDirection in interface JDBCFetchConfiguration

setFetchDirection

public JDBCFetchConfiguration setFetchDirection(int direction)

Description copied from interface: JDBCFetchConfiguration

The fetch direction to use as a constant from ResultSet. Defaults to the openjpa.jdbc.FetchDirection setting.

Specified by:

setFetchDirection in interface JDBCFetchConfiguration

getLRSSize

public int getLRSSize()

Description copied from interface: JDBCFetchConfiguration

The large result set size mode to use. Defaults to the openjpa.jdbc.LRSSize setting.

Specified by:

getLRSSize in interface JDBCFetchConfiguration

setLRSSize

public JDBCFetchConfiguration setLRSSize(int size)

Description copied from interface: JDBCFetchConfiguration

The large result set size mode to use. Defaults to the openjpa.jdbc.LRSSize setting.

Specified by:

setLRSSize in interface JDBCFetchConfiguration

getJoinSyntax

public int getJoinSyntax()

Description copied from interface: JDBCFetchConfiguration

The join syntax to use.

Specified by:

getJoinSyntax in interface JDBCFetchConfiguration

setJoinSyntax

public JDBCFetchConfiguration setJoinSyntax(int syntax)

Description copied from interface: JDBCFetchConfiguration

The join syntax to use.

Specified by:

setJoinSyntax in interface JDBCFetchConfiguration

newResultList

public ResultList<?> newResultList(ResultObjectProvider rop)

Description copied from interface: FetchConfiguration

Return a new result list for the current fetch configuration.

Specified by:

newResultList in interface FetchConfiguration

Overrides:

newResultList in class FetchConfigurationImpl

getJoins

public Set<String> getJoins()

Description copied from interface: JDBCFetchConfiguration

Returns the names of the joins that this component will use when loading objects. Defaults to the empty set. This set is not thread safe.

Specified by:

getJoins in interface JDBCFetchConfiguration

hasJoin

public boolean hasJoin(String field)

Description copied from interface: JDBCFetchConfiguration

Return true if the given fully-qualified join has been added.

Specified by:

hasJoin in interface JDBCFetchConfiguration

addJoin

public JDBCFetchConfiguration addJoin(String join)

Description copied from interface: JDBCFetchConfiguration

Adds field to the set of fully-qualified field names to eagerly join when loading objects. Each class can have at most one to-many eagerly joined fields.

Specified by:

addJoin in interface JDBCFetchConfiguration

addJoins

public JDBCFetchConfiguration addJoins(Collection<String> joins)

Description copied from interface: JDBCFetchConfiguration

Adds fields to the set of fully-qualified field names to eagerly join when loading objects. Each class can have at most one to-many eagerly joined fields.

Specified by:

addJoins in interface JDBCFetchConfiguration

removeJoin

public JDBCFetchConfiguration removeJoin(String field)

Description copied from interface: JDBCFetchConfiguration

Removes field to the set of fully-qualified field names to eagerly join when loading objects.

Specified by:

removeJoin in interface JDBCFetchConfiguration

removeJoins

public JDBCFetchConfiguration removeJoins(Collection<String> joins)

Description copied from interface: JDBCFetchConfiguration

Removes fields from the set of fully-qualified field names to eagerly join when loading objects.

Specified by:

removeJoins in interface JDBCFetchConfiguration

clearJoins

public JDBCFetchConfiguration clearJoins()

Description copied from interface: JDBCFetchConfiguration

Clears the set of field names to join when loading data.

Specified by:

clearJoins in interface JDBCFetchConfiguration

getIsolation

public int getIsolation()

Description copied from interface: JDBCFetchConfiguration

The isolation level for queries issued to the database. This overrides the persistence-unit-wide openjpa.jdbc.TransactionIsolation value.

Must be one of Connection.TRANSACTION_NONE, Connection.TRANSACTION_READ_UNCOMMITTED, Connection.TRANSACTION_READ_COMMITTED, Connection.TRANSACTION_REPEATABLE_READ, Connection.TRANSACTION_SERIALIZABLE, or -1 for the default connection level specified by the context in which this fetch configuration is being used.

Specified by:

getIsolation in interface JDBCFetchConfiguration

setIsolation

public JDBCFetchConfiguration setIsolation(int level)

Description copied from interface: JDBCFetchConfiguration

The isolation level for queries issued to the database. This overrides the persistence-unit-wide openjpa.jdbc.TransactionIsolation value.

Must be one of Connection.TRANSACTION_NONE, Connection.TRANSACTION_READ_UNCOMMITTED, Connection.TRANSACTION_READ_COMMITTED, Connection.TRANSACTION_REPEATABLE_READ, Connection.TRANSACTION_SERIALIZABLE, or -1 for the default connection level specified by the context in which this fetch configuration is being used.

Specified by:

setIsolation in interface JDBCFetchConfiguration

traverseJDBC

public JDBCFetchConfiguration traverseJDBC(FieldMetaData fm)

Description copied from interface: JDBCFetchConfiguration

Convenience method to cast traversal to store-specific type.

Specified by:

traverseJDBC in interface JDBCFetchConfiguration

getFetchInnerJoins

public Set<String> getFetchInnerJoins()

Description copied from interface: JDBCFetchConfiguration

Returns the names of the inner fetch joins that this component will use when loading objects. Defaults to the empty set. This set is not thread safe.

Specified by:

getFetchInnerJoins in interface JDBCFetchConfiguration

hasFetchInnerJoin

public boolean hasFetchInnerJoin(String field)

Description copied from interface: JDBCFetchConfiguration

Return true if the given fully-qualified inner fetch join has been added.

Specified by:

hasFetchInnerJoin in interface JDBCFetchConfiguration

addFetchInnerJoin

public JDBCFetchConfiguration addFetchInnerJoin(String join)

Description copied from interface: JDBCFetchConfiguration

Adds field to the set of fully-qualified field names to eagerly join when loading objects. Each class can have at most one to-many eagerly joined fields.

Specified by:

addFetchInnerJoin in interface JDBCFetchConfiguration

addFetchInnerJoins

public JDBCFetchConfiguration addFetchInnerJoins(Collection<String> joins)

Description copied from interface: JDBCFetchConfiguration

Adds fields to the set of fully-qualified field names to eagerly join when loading objects. Each class can have at most one to-many eagerly joined fields.

Specified by:

addFetchInnerJoins in interface JDBCFetchConfiguration