java.lang.Object
- org.apache.openjpa.kernel.FetchConfigurationImpl

All Implemented Interfaces:

Serializable, Cloneable, FetchConfiguration, LockLevels, LockScopes, QueryFlushModes

Direct Known Subclasses:

JDBCFetchConfigurationImpl
```
public class FetchConfigurationImpl
extends Object
implements FetchConfiguration, Cloneable
```
Allows configuration and optimization of how objects are loaded from the data store.

Since:

0.3.0

Author:

Abe White, Pinaki Poddar

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class Description

protected static class FetchConfigurationImpl.ConfigurationState
Configurable state shared throughout a traversal chain.

Field Summary
- Fields inherited from interface org.apache.openjpa.kernel.FetchConfiguration
  DEFAULT, FETCH_LOAD, FETCH_NONE, FETCH_REF
- 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.kernel.QueryFlushModes
  FLUSH_FALSE, FLUSH_TRUE, FLUSH_WITH_CONNECTION

Constructor Summary

Constructors
Modifier Constructor Description

FetchConfigurationImpl()

protected FetchConfigurationImpl(FetchConfigurationImpl.ConfigurationState state)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`FetchConfiguration`	`addFetchGroup(String name)`	Adds `group` to the set of fetch group names to use when loading objects.
`FetchConfiguration`	`addFetchGroups(Collection<String> groups)`	Adds `groups` to the set of fetch group names to use when loading objects.
`FetchConfiguration`	`addField(String field)`	Adds `field` to the set of fully-qualified field names to use when loading objects.
`FetchConfiguration`	`addFields(Collection<String> fields)`	Adds `fields` to the set of fully-qualified field names to use when loading objects.
`FetchConfiguration`	`clearFetchGroups()`	Clears the set of fetch group names to use when loading data.
`FetchConfiguration`	`clearFields()`	Clears the set of field names to use when loading data.
`Object`	`clone()`	Clone this instance.
`void`	`copy(FetchConfiguration fetch)`	Copy the state from the given fetch configuration to this one.
`DataCacheRetrieveMode`	`getCacheRetrieveMode()`	Gets the current retrieve mode for data cache.
`DataCacheStoreMode`	`getCacheStoreMode()`	Gets the current storage mode for data cache.
`StoreContext`	`getContext()`	Return the context associated with this configuration; may be null if it has not been set or this object has been serialized.
`boolean`	`getExtendedPathLookup()`	Affirms if extended path lookup feature is active.
`int`	`getFetchBatchSize()`	Return the fetch batch size for large result set support.
`Set<String>`	`getFetchGroups()`	Returns immutable set of names of the fetch groups that this component will use when loading objects.
`Set<String>`	`getFields()`	Returns the set of fully-qualified field names that this component will use when loading objects.
`int`	`getFlushBeforeQueries()`	The query automatic flush configuration.
`Object`	`getHint(String name)`	Get the hint value for the specific key as originally set by the caller, or null if the hint is not specified.
`Map<String,Object>`	`getHints()`	Gets the current hints set on this receiver.
`int`	`getLockScope()`	The lock scope for next fetch.
`int`	`getLockTimeout()`	The number of milliseconds to wait for an object lock, or -1 for no limit.
`int`	`getMaxFetchDepth()`	Return the maximum depth of fetched instance graph.
`boolean`	`getQueryCacheEnabled()`	Return whether or not query caching is enabled.
`int`	`getQueryTimeout()`	The number of milliseconds to wait for a query, or -1 for no limit.
`int`	`getReadLockLevel()`	The lock level to use for locking loaded objects.
`Set<Class<?>>`	`getRootClasses()`	Root classes for recursive operations.
`Set<Object>`	`getRootInstances()`	Root instances for recursive operations.
`Collection<String>`	`getSupportedHints()`
`int`	`getWriteLockLevel()`	The lock level to use for locking dirtied objects.
`boolean`	`hasFetchGroup(String group)`	Return true if the given fetch group has been added.
`boolean`	`hasFetchGroupAll()`
`boolean`	`hasFetchGroupDefault()`
`boolean`	`hasField(String field)`	Return true if the given fully-qualified field has been added.
`boolean`	`isDefaultPUFetchGroupConfigurationOnly()`	Affirm if the Fetch Plan currently matches the Persistence Unit's configured default.
`boolean`	`isFetchConfigurationSQLCacheAdmissible()`	Whether SQL generated by the FetchConfiguration's current configuration should be cached.
`boolean`	`isHintSet(String key)`	Affirms if the given key is set as a hint.
`void`	`lock()`	Synchronize on internal lock if multithreaded is true.
`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.
`protected static void`	`populateHintSetter(Class<?> target, String hint, Class<?> type, String... prefixes)`	Populate static registry of hints.
`protected static void`	`populateHintSetter(Class<?> target, String method, String hint, Class<?> type, String... prefixes)`	Populate static registry of hints.
`FetchConfiguration`	`removeFetchGroup(String group)`	Remove the given fetch group.
`FetchConfiguration`	`removeFetchGroups(Collection<String> groups)`	Removes `groups` from the set of fetch group names to use when loading objects.
`FetchConfiguration`	`removeField(String field)`	Remove the given fully-qualified field.
`FetchConfiguration`	`removeFields(Collection<String> fields)`	Removes `fields` from the set of fully-qualified field names to use when loading objects.
`Object`	`removeHint(String name)`
`void`	`removeHint(String... keys)`	Removes the given keys and their hint value.
`int`	`requiresFetch(FieldMetaData fm)`	Affirms if the given field requires to be fetched in the context of current fetch operation.
`boolean`	`requiresLoad()`	Return false if we know that the object being fetched with this configuration does not require a load, because this configuration came from a traversal of a `FetchConfiguration.FETCH_REF` field.
`FetchConfiguration`	`resetFetchGroups()`	Resets the set of fetch groups to the list in the global configuration.
`void`	`setCacheRetrieveMode(DataCacheRetrieveMode mode)`	Sets the current retrieve mode for data cache.
`void`	`setCacheStoreMode(DataCacheStoreMode mode)`	Sets the current storage mode for data cache.
`void`	`setContext(StoreContext ctx)`	Called automatically by the system to associate the fetch configuration with a context before use.
`FetchConfiguration`	`setExtendedPathLookup(boolean flag)`	Sets extended path lookup feature.
`FetchConfiguration`	`setFetchBatchSize(int fetchBatchSize)`	Set the fetch batch size for large result set support.
`FetchConfiguration`	`setFlushBeforeQueries(int flush)`	The query automatic flush configuration.
`void`	`setHint(String key, Object value)`	Same as `setHint(key, value, value)`.
`void`	`setHint(String key, Object value, Object original)`	Sets the hint to the given value.
`FetchConfiguration`	`setLockScope(int scope)`	The lock scope for next fetch.
`FetchConfiguration`	`setLockTimeout(int timeout)`	The number of milliseconds to wait for an object lock, or -1 for no limit.
`FetchConfiguration`	`setMaxFetchDepth(int depth)`	Set the maximum depth of the fetched instance graph.
`FetchConfiguration`	`setQueryCacheEnabled(boolean cache)`	Control whether or not query caching is enabled.
`FetchConfiguration`	`setQueryTimeout(int timeout)`	The number of milliseconds to wait for a query, or -1 for no limit.
`FetchConfiguration`	`setReadLockLevel(int level)`	The lock level to use for locking loaded objects.
`FetchConfiguration`	`setRootClasses(Collection<Class<?>> classes)`	Root classes for recursive operations.
`FetchConfiguration`	`setRootInstances(Collection<?> instances)`	Root instances for recursive operations.
`FetchConfiguration`	`setWriteLockLevel(int level)`	The lock level to use for locking dirtied objects.
`String`	`toString()`
`protected String`	`toString(Object o)`
`FetchConfiguration`	`traverse(FieldMetaData fm)`	Traverse the given field to generate (possibly) a new configuration state.
`void`	`unlock()`	Release internal lock if multithreaded is true.

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - FetchConfigurationImpl
```
public FetchConfigurationImpl()
```
  - FetchConfigurationImpl
```
protected FetchConfigurationImpl(FetchConfigurationImpl.ConfigurationState state)
```
- Method Detail
  - populateHintSetter
```
protected static void populateHintSetter(Class<?> target,
                                         String hint,
                                         Class<?> type,
                                         String... prefixes)
```
    Populate static registry of hints.
    
    Parameters:
    
    target - The name of the target class that will receive this hint.
    
    hint - the simple name of the hint without a prefix.
    
    type - the value argument type of the target setter method.
    
    prefixes - the prefixes will be added to the simple hint name.
  - populateHintSetter
```
protected static void populateHintSetter(Class<?> target,
                                         String method,
                                         String hint,
                                         Class<?> type,
                                         String... prefixes)
```
    Populate static registry of hints.
    
    Parameters:
    
    target - The name of the target class that will receive this hint.
    
    method - The name of the method in the target class that will receive this hint.
    
    hint - the simple name of the hint without a prefix.
    
    type - the value argument type of the target setter method.
    
    prefixes - the prefixes will be added to the simple hint name.
  - getContext
```
public StoreContext getContext()
```
    Description copied from interface: FetchConfiguration
    
    Return the context associated with this configuration; may be null if it has not been set or this object has been serialized.
    
    Specified by:
    
    getContext in interface FetchConfiguration
  - 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
  - clone
```
public Object clone()
```
    Clone this instance.
    
    Specified by:
    
    clone in interface FetchConfiguration
    
    Overrides:
    
    clone in class Object
  - newInstance
```
protected FetchConfigurationImpl newInstance(FetchConfigurationImpl.ConfigurationState state)
```
    Return a new hollow instance.
  - 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
  - getFetchBatchSize
```
public int getFetchBatchSize()
```
    Description copied from interface: FetchConfiguration
    
    Return the fetch batch size for large result set support. Defaults to the openjpa.FetchBatchSize setting. Note that this property will be ignored under some data stores.
    
    Specified by:
    
    getFetchBatchSize in interface FetchConfiguration
  - setFetchBatchSize
```
public FetchConfiguration setFetchBatchSize(int fetchBatchSize)
```
    Description copied from interface: FetchConfiguration
    
    Set the fetch batch size for large result set support. Defaults to the openjpa.FetchBatchSize setting. Note that this property will be ignored under some data stores.
    
    Specified by:
    
    setFetchBatchSize in interface FetchConfiguration
  - getMaxFetchDepth
```
public int getMaxFetchDepth()
```
    Description copied from interface: FetchConfiguration
    
    Return the maximum depth of fetched instance graph. Defaults to 1
    
    Specified by:
    
    getMaxFetchDepth in interface FetchConfiguration
  - setMaxFetchDepth
```
public FetchConfiguration setMaxFetchDepth(int depth)
```
    Description copied from interface: FetchConfiguration
    
    Set the maximum depth of the fetched instance graph.
    
    Specified by:
    
    setMaxFetchDepth in interface FetchConfiguration
    
    Parameters:
    
    depth - denotes limiting length of traversal path from a root instance. -1 implies no limit. 0 is not permissible.
  - getQueryCacheEnabled
```
public boolean getQueryCacheEnabled()
```
    Description copied from interface: FetchConfiguration
    
    Return whether or not query caching is enabled. If this returns true but the datacache plugin is not installed, caching will not be enabled. If this returns false, query caching will not be used even if the datacache plugin is installed.
    
    Specified by:
    
    getQueryCacheEnabled in interface FetchConfiguration
  - setQueryCacheEnabled
```
public FetchConfiguration setQueryCacheEnabled(boolean cache)
```
    Description copied from interface: FetchConfiguration
    
    Control whether or not query caching is enabled. This has no effect if the datacache plugin is not installed, or if the query cache size is set to zero.
    
    Specified by:
    
    setQueryCacheEnabled in interface FetchConfiguration
  - getFlushBeforeQueries
```
public int getFlushBeforeQueries()
```
    Description copied from interface: FetchConfiguration
    
    The query automatic flush configuration.
    
    Specified by:
    
    getFlushBeforeQueries in interface FetchConfiguration
  - getExtendedPathLookup
```
public boolean getExtendedPathLookup()
```
    Description copied from interface: FetchConfiguration
    
    Affirms if extended path lookup feature is active.
    
    Specified by:
    
    getExtendedPathLookup in interface FetchConfiguration
  - setExtendedPathLookup
```
public FetchConfiguration setExtendedPathLookup(boolean flag)
```
    Description copied from interface: FetchConfiguration
    
    Sets extended path lookup feature.
    
    Specified by:
    
    setExtendedPathLookup in interface FetchConfiguration
  - setFlushBeforeQueries
```
public FetchConfiguration setFlushBeforeQueries(int flush)
```
    Description copied from interface: FetchConfiguration
    
    The query automatic flush configuration.
    
    Specified by:
    
    setFlushBeforeQueries in interface FetchConfiguration
  - getFetchGroups
```
public Set<String> getFetchGroups()
```
    Description copied from interface: FetchConfiguration
    
    Returns immutable set of names of the fetch groups that this component will use when loading objects. Defaults to the openjpa.FetchGroups setting. This set is not thread safe.
    
    Specified by:
    
    getFetchGroups in interface FetchConfiguration
  - hasFetchGroup
```
public boolean hasFetchGroup(String group)
```
    Description copied from interface: FetchConfiguration
    
    Return true if the given fetch group has been added.
    
    Specified by:
    
    hasFetchGroup in interface FetchConfiguration
  - hasFetchGroupDefault
```
public boolean hasFetchGroupDefault()
```
  - hasFetchGroupAll
```
public boolean hasFetchGroupAll()
```
  - addFetchGroup
```
public FetchConfiguration addFetchGroup(String name)
```
    Description copied from interface: FetchConfiguration
    
    Adds group to the set of fetch group names to use when loading objects.
    
    Specified by:
    
    addFetchGroup in interface FetchConfiguration
  - addFetchGroups
```
public FetchConfiguration addFetchGroups(Collection<String> groups)
```
    Description copied from interface: FetchConfiguration
    
    Adds groups to the set of fetch group names to use when loading objects.
    
    Specified by:
    
    addFetchGroups in interface FetchConfiguration
  - removeFetchGroup
```
public FetchConfiguration removeFetchGroup(String group)
```
    Description copied from interface: FetchConfiguration
    
    Remove the given fetch group.
    
    Specified by:
    
    removeFetchGroup in interface FetchConfiguration
  - removeFetchGroups
```
public FetchConfiguration removeFetchGroups(Collection<String> groups)
```
    Description copied from interface: FetchConfiguration
    
    Removes groups from the set of fetch group names to use when loading objects.
    
    Specified by:
    
    removeFetchGroups in interface FetchConfiguration
  - clearFetchGroups
```
public FetchConfiguration clearFetchGroups()
```
    Description copied from interface: FetchConfiguration
    
    Clears the set of fetch group names to use when loading data. After this operation is invoked, only those fields in the default fetch group (and any requested field) will be loaded when loading an object.
    
    Specified by:
    
    clearFetchGroups in interface FetchConfiguration
  - resetFetchGroups
```
public FetchConfiguration resetFetchGroups()
```
    Description copied from interface: FetchConfiguration
    
    Resets the set of fetch groups to the list in the global configuration.
    
    Specified by:
    
    resetFetchGroups in interface FetchConfiguration
  - isDefaultPUFetchGroupConfigurationOnly
```
public boolean isDefaultPUFetchGroupConfigurationOnly()
```
    Description copied from interface: FetchConfiguration
    
    Affirm if the Fetch Plan currently matches the Persistence Unit's configured default.
    
    Specified by:
    
    isDefaultPUFetchGroupConfigurationOnly in interface FetchConfiguration
  - isFetchConfigurationSQLCacheAdmissible
```
public boolean isFetchConfigurationSQLCacheAdmissible()
```
    Description copied from interface: FetchConfiguration
    
    Whether SQL generated by the FetchConfiguration's current configuration should be cached.
    
    Specified by:
    
    isFetchConfigurationSQLCacheAdmissible in interface FetchConfiguration
  - getFields
```
public Set<String> getFields()
```
    Description copied from interface: FetchConfiguration
    
    Returns the set of fully-qualified field names that this component will use when loading objects. Defaults to the empty set. This set is not thread safe.
    
    Specified by:
    
    getFields in interface FetchConfiguration
  - hasField
```
public boolean hasField(String field)
```
    Description copied from interface: FetchConfiguration
    
    Return true if the given fully-qualified field has been added.
    
    Specified by:
    
    hasField in interface FetchConfiguration
  - addField
```
public FetchConfiguration addField(String field)
```
    Description copied from interface: FetchConfiguration
    
    Adds field to the set of fully-qualified field names to use when loading objects.
    
    Specified by:
    
    addField in interface FetchConfiguration
  - addFields
```
public FetchConfiguration addFields(Collection<String> fields)
```
    Description copied from interface: FetchConfiguration
    
    Adds fields to the set of fully-qualified field names to use when loading objects.
    
    Specified by:
    
    addFields in interface FetchConfiguration
  - removeField
```
public FetchConfiguration removeField(String field)
```
    Description copied from interface: FetchConfiguration
    
    Remove the given fully-qualified field.
    
    Specified by:
    
    removeField in interface FetchConfiguration
  - removeFields
```
public FetchConfiguration removeFields(Collection<String> fields)
```
    Description copied from interface: FetchConfiguration
    
    Removes fields from the set of fully-qualified field names to use when loading objects.
    
    Specified by:
    
    removeFields in interface FetchConfiguration
  - clearFields
```
public FetchConfiguration clearFields()
```
    Description copied from interface: FetchConfiguration
    
    Clears the set of field names to use when loading data. After this operation is invoked, only those fields in the configured fetch groups will be loaded when loading an object.
    
    Specified by:
    
    clearFields in interface FetchConfiguration
  - getCacheRetrieveMode
```
public DataCacheRetrieveMode getCacheRetrieveMode()
```
    Description copied from interface: FetchConfiguration
    
    Gets the current retrieve mode for data cache.
    
    Specified by:
    
    getCacheRetrieveMode in interface FetchConfiguration
  - getCacheStoreMode
```
public DataCacheStoreMode getCacheStoreMode()
```
    Description copied from interface: FetchConfiguration
    
    Gets the current storage mode for data cache.
    
    Specified by:
    
    getCacheStoreMode in interface FetchConfiguration
  - setCacheRetrieveMode
```
public void setCacheRetrieveMode(DataCacheRetrieveMode mode)
```
    Description copied from interface: FetchConfiguration
    
    Sets the current retrieve mode for data cache.
    
    Specified by:
    
    setCacheRetrieveMode in interface FetchConfiguration
  - setCacheStoreMode
```
public void setCacheStoreMode(DataCacheStoreMode mode)
```
    Description copied from interface: FetchConfiguration
    
    Sets the current storage mode for data cache.
    
    Specified by:
    
    setCacheStoreMode in interface FetchConfiguration
  - getLockTimeout
```
public int getLockTimeout()
```
    Description copied from interface: FetchConfiguration
    
    The number of milliseconds to wait for an object lock, or -1 for no limit.
    
    Specified by:
    
    getLockTimeout in interface FetchConfiguration
  - setLockTimeout
```
public FetchConfiguration setLockTimeout(int timeout)
```
    Description copied from interface: FetchConfiguration
    
    The number of milliseconds to wait for an object lock, or -1 for no limit.
    
    Specified by:
    
    setLockTimeout in interface FetchConfiguration
  - getQueryTimeout
```
public int getQueryTimeout()
```
    Description copied from interface: FetchConfiguration
    
    The number of milliseconds to wait for a query, or -1 for no limit.
    
    Specified by:
    
    getQueryTimeout in interface FetchConfiguration
  - setQueryTimeout
```
public FetchConfiguration setQueryTimeout(int timeout)
```
    Description copied from interface: FetchConfiguration
    
    The number of milliseconds to wait for a query, or -1 for no limit.
    
    Specified by:
    
    setQueryTimeout in interface FetchConfiguration
  - getLockScope
```
public int getLockScope()
```
    Description copied from interface: FetchConfiguration
    
    The lock scope for next fetch.
    
    Specified by:
    
    getLockScope in interface FetchConfiguration
  - setLockScope
```
public FetchConfiguration setLockScope(int scope)
```
    Description copied from interface: FetchConfiguration
    
    The lock scope for next fetch.
    
    Specified by:
    
    setLockScope in interface FetchConfiguration
  - getReadLockLevel
```
public int getReadLockLevel()
```
    Description copied from interface: FetchConfiguration
    
    The lock level to use for locking loaded objects.
    
    Specified by:
    
    getReadLockLevel in interface FetchConfiguration
  - setReadLockLevel
```
public FetchConfiguration setReadLockLevel(int level)
```
    Description copied from interface: FetchConfiguration
    
    The lock level to use for locking loaded objects.
    
    Specified by:
    
    setReadLockLevel in interface FetchConfiguration
  - getWriteLockLevel
```
public int getWriteLockLevel()
```
    Description copied from interface: FetchConfiguration
    
    The lock level to use for locking dirtied objects.
    
    Specified by:
    
    getWriteLockLevel in interface FetchConfiguration
  - setWriteLockLevel
```
public FetchConfiguration setWriteLockLevel(int level)
```
    Description copied from interface: FetchConfiguration
    
    The lock level to use for locking dirtied objects.
    
    Specified by:
    
    setWriteLockLevel in interface FetchConfiguration
  - 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
  - getHints
```
public Map<String,Object> getHints()
```
    Gets the current hints set on this receiver. The values designate the actual value specified by the caller and not the values that may have been actually set on the state variables of this receiver.
    
    Specified by:
    
    getHints in interface FetchConfiguration
  - isHintSet
```
public boolean isHintSet(String key)
```
    Affirms if the given key is set as a hint.
    
    Specified by:
    
    isHintSet in interface FetchConfiguration
  - removeHint
```
public void removeHint(String... keys)
```
    Removes the given keys and their hint value.
  - getSupportedHints
```
public Collection<String> getSupportedHints()
```
  - setHint
```
public void setHint(String key,
                    Object value)
```
    Same as setHint(key, value, value).
    
    Specified by:
    
    setHint in interface FetchConfiguration
    
    value - the value of the hint. If the hint has a corresponding setter, then the type of value must be same as the setter argument.
    
    See Also:
    
    setHint(String, Object, Object)
  - setHint
```
public void setHint(String key,
                    Object value,
                    Object original)
```
    Sets the hint to the given value. If the key corresponds to a known key, then that value is set via the setter method. Otherwise it is put into opaque hints map.
    In either case, the original value is put in the hints map. So essential difference between setting a value directly by a setter and via a hint is the memory of this original value.
    The other important difference is setting lock levels. Setting of lock level via setter method needs active transaction. But setting via hint does not.
    
    Specified by:
    
    setHint in interface FetchConfiguration
    
    Parameters:
    
    key - a hint key. If it is one of the statically registered hint key then the setter is called.
    
    value - to be set. The given value type must match the argument type of the setter, if one exists.
    
    original - value as specified by the caller. This value is put in the hints map.
    
    Throws:
    
    IllegalArgumentException - if the given value is not acceptable by the setter method, if one exists corresponds the given hint key.
  - getHint
```
public Object getHint(String name)
```
    Description copied from interface: FetchConfiguration
    
    Get the hint value for the specific key as originally set by the caller, or null if the hint is not specified.
    
    Specified by:
    
    getHint in interface FetchConfiguration
  - removeHint
```
public Object removeHint(String name)
```
  - getRootClasses
```
public Set<Class<?>> getRootClasses()
```
    Description copied from interface: FetchConfiguration
    
    Root classes for recursive operations. This set is not thread safe.
    
    Specified by:
    
    getRootClasses in interface FetchConfiguration
  - setRootClasses
```
public FetchConfiguration setRootClasses(Collection<Class<?>> classes)
```
    Description copied from interface: FetchConfiguration
    
    Root classes for recursive operations.
    
    Specified by:
    
    setRootClasses in interface FetchConfiguration
  - getRootInstances
```
public Set<Object> getRootInstances()
```
    Description copied from interface: FetchConfiguration
    
    Root instances for recursive operations. This set is not thread safe.
    
    Specified by:
    
    getRootInstances in interface FetchConfiguration
  - setRootInstances
```
public FetchConfiguration setRootInstances(Collection<?> instances)
```
    Description copied from interface: FetchConfiguration
    
    Root instances for recursive operations.
    
    Specified by:
    
    setRootInstances in interface FetchConfiguration
  - lock
```
public void lock()
```
    Description copied from interface: FetchConfiguration
    
    Synchronize on internal lock if multithreaded is true.
    
    Specified by:
    
    lock in interface FetchConfiguration
  - unlock
```
public void unlock()
```
    Description copied from interface: FetchConfiguration
    
    Release internal lock if multithreaded is true.
    
    Specified by:
    
    unlock in interface FetchConfiguration
  - requiresFetch
```
public int requiresFetch(FieldMetaData fm)
```
    Description copied from interface: FetchConfiguration
    
    Affirms if the given field requires to be fetched in the context of current fetch operation. Returns one of FetchConfiguration.FETCH_NONE, FetchConfiguration.FETCH_LOAD, FetchConfiguration.FETCH_REF.
    
    Specified by:
    
    requiresFetch in interface FetchConfiguration
  - requiresLoad
```
public boolean requiresLoad()
```
    Description copied from interface: FetchConfiguration
    
    Return false if we know that the object being fetched with this configuration does not require a load, because this configuration came from a traversal of a FetchConfiguration.FETCH_REF field.
    
    Specified by:
    
    requiresLoad in interface FetchConfiguration
  - traverse
```
public FetchConfiguration traverse(FieldMetaData fm)
```
    Description copied from interface: FetchConfiguration
    
    Traverse the given field to generate (possibly) a new configuration state.
    
    Specified by:
    
    traverse in interface FetchConfiguration
    
    Returns:
    
    a new configuration state resulting out of traversal
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - toString
```
protected String toString(Object o)
```

Modifier	Constructor	Description
	`FetchConfigurationImpl()`
`protected`	`FetchConfigurationImpl(FetchConfigurationImpl.ConfigurationState state)`

Class FetchConfigurationImpl

Nested Class Summary

Field Summary

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

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

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

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

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

FetchConfigurationImpl

FetchConfigurationImpl

Method Detail

populateHintSetter

populateHintSetter

getContext

setContext

clone

newInstance

copy

getFetchBatchSize

setFetchBatchSize

getMaxFetchDepth

setMaxFetchDepth

getQueryCacheEnabled

setQueryCacheEnabled

getFlushBeforeQueries

getExtendedPathLookup

setExtendedPathLookup

setFlushBeforeQueries

getFetchGroups

hasFetchGroup

hasFetchGroupDefault

hasFetchGroupAll

addFetchGroup

addFetchGroups

removeFetchGroup

removeFetchGroups

clearFetchGroups

resetFetchGroups

isDefaultPUFetchGroupConfigurationOnly

isFetchConfigurationSQLCacheAdmissible

getFields

hasField

addField

addFields

removeField

removeFields

clearFields

getCacheRetrieveMode

getCacheStoreMode

setCacheRetrieveMode

setCacheStoreMode

getLockTimeout

setLockTimeout

getQueryTimeout

setQueryTimeout

getLockScope

setLockScope

getReadLockLevel

setReadLockLevel

getWriteLockLevel

setWriteLockLevel

newResultList

getHints

isHintSet

removeHint

getSupportedHints

setHint

setHint

getHint

removeHint

getRootClasses

setRootClasses

getRootInstances

setRootInstances

lock

unlock

requiresFetch