Serialized Form (Oracle - Berkeley DB Java Edition API)

Package com.sleepycat.je
- Class com.sleepycat.je.BtreeStats extends DatabaseStats implements Serializable
  
  serialVersionUID:
  
  298825033L
  - Serialized Fields
    - dbImplStats
```
com.sleepycat.je.utilint.StatGroup dbImplStats
```
    - treeStats
```
com.sleepycat.je.utilint.StatGroup treeStats
```
- Class com.sleepycat.je.CommitToken extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - repenvUUID
```
java.util.UUID repenvUUID
```
    - vlsn
```
long vlsn
```
- Class com.sleepycat.je.DatabaseEntry extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - data
```
byte[] data
```
    - dlen
```
int dlen
```
    - doff
```
int doff
```
    - offset
```
int offset
```
    - size
```
int size
```
    - partial
```
boolean partial
```
- Class com.sleepycat.je.DatabaseException extends java.lang.RuntimeException implements Serializable
  
  serialVersionUID:
  
  1535562945L
  - Serialized Fields
    - extraInfo
```
java.lang.String extraInfo
```
- Class com.sleepycat.je.DatabaseExistsException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.DatabaseNotFoundException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1895430616L
- Class com.sleepycat.je.DatabaseStats extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.DeadlockException extends LockConflictException implements Serializable
  
  serialVersionUID:
  
  729943514L
- Class com.sleepycat.je.DeleteConstraintException extends SecondaryConstraintException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.DiskOrderedCursorProducerException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.DuplicateDataException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.EnvironmentConfig extends EnvironmentMutableConfig implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - allowCreate
```
boolean allowCreate
```
    - nodeName
```
java.lang.String nodeName
```
- Class com.sleepycat.je.EnvironmentFailureException extends RunRecoveryException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - alreadyThrown
```
boolean alreadyThrown
```
    - reason
```
com.sleepycat.je.dbi.EnvironmentFailureReason reason
```
- Class com.sleepycat.je.EnvironmentLockedException extends EnvironmentFailureException implements Serializable
  
  serialVersionUID:
  
  629594964L
- Class com.sleepycat.je.EnvironmentMutableConfig extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - txnNoSync
```
boolean txnNoSync
```
    - txnWriteNoSync
```
boolean txnWriteNoSync
```
    - cacheMode
```
CacheMode cacheMode
```
- Class com.sleepycat.je.EnvironmentNotFoundException extends EnvironmentFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.EnvironmentStats extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  1734048134L
  - Serialized Fields
    - incompStats
```
com.sleepycat.je.utilint.StatGroup incompStats
```
    - cacheStats
```
com.sleepycat.je.utilint.StatGroup cacheStats
```
    - ckptStats
```
com.sleepycat.je.utilint.StatGroup ckptStats
```
    - cleanerStats
```
com.sleepycat.je.utilint.StatGroup cleanerStats
```
    - logStats
```
com.sleepycat.je.utilint.StatGroup logStats
```
    - lockStats
```
com.sleepycat.je.utilint.StatGroup lockStats
```
    - envImplStats
```
com.sleepycat.je.utilint.StatGroup envImplStats
```
- Class com.sleepycat.je.ForeignConstraintException extends SecondaryConstraintException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.LockConflictException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - ownerTxnIds
```
long[] ownerTxnIds
```
    - waiterTxnIds
```
long[] waiterTxnIds
```
    - timeoutMillis
```
long timeoutMillis
```
- Class com.sleepycat.je.LockNotAvailableException extends LockConflictException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.LockNotGrantedException extends DeadlockException implements Serializable
  
  serialVersionUID:
  
  646414701L
- Class com.sleepycat.je.LockStats extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  172109534L
  - Serialized Fields
    - basicStats
```
com.sleepycat.je.utilint.StatGroup basicStats
```
      Deprecated.
    - latchStats
```
com.sleepycat.je.utilint.StatGroup latchStats
```
      Deprecated.
    - tableStats
```
com.sleepycat.je.utilint.StatGroup tableStats
```
      Deprecated.
- Class com.sleepycat.je.LockTimeoutException extends LockConflictException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.LogWriteException extends EnvironmentFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.OperationFailureException extends DatabaseException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.PreloadStats extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  2131949076L
  - Serialized Fields
    - nINsLoaded
```
int nINsLoaded
```
      The number of INs loaded during the preload() operation.
    - nBINsLoaded
```
int nBINsLoaded
```
      The number of BINs loaded during the preload() operation.
    - nLNsLoaded
```
int nLNsLoaded
```
      The number of LNs loaded during the preload() operation.
    - nDINsLoaded
```
int nDINsLoaded
```
      The number of DINs loaded during the preload() operation.
    - nDBINsLoaded
```
int nDBINsLoaded
```
      The number of DBINs loaded during the preload() operation.
    - nDupCountLNsLoaded
```
int nDupCountLNsLoaded
```
      The number of DupCountLNs loaded during the preload() operation.
    - nCountMemoryExceeded
```
int nCountMemoryExceeded
```
      The number of times internal memory was exceeded.
    - status
```
PreloadStatus status
```
      The status of the preload() operation.
- Class com.sleepycat.je.PreloadStatus extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  903470137L
  - Serialized Fields
    - statusName
```
java.lang.String statusName
```
- Class com.sleepycat.je.RunRecoveryException extends DatabaseException implements Serializable
  
  serialVersionUID:
  
  1913208269L
- Class com.sleepycat.je.SecondaryConstraintException extends SecondaryReferenceException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.SecondaryIntegrityException extends SecondaryReferenceException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.SecondaryReferenceException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - secDbName
```
java.lang.String secDbName
```
    - secKey
```
DatabaseEntry secKey
```
    - priKey
```
DatabaseEntry priKey
```
- Class com.sleepycat.je.SequenceExistsException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.SequenceIntegrityException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.SequenceNotFoundException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.SequenceOverflowException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.SequenceStats extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - stats
```
com.sleepycat.je.utilint.StatGroup stats
```
- Class com.sleepycat.je.ThreadInterruptedException extends EnvironmentFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.TransactionStats extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  2136955031L
  - Serialized Fields
    - stats
```
com.sleepycat.je.utilint.StatGroup stats
```
- Class com.sleepycat.je.TransactionStats.Active extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  1286693589L
  - Serialized Fields
    - txnId
```
long txnId
```
      The transaction ID of the transaction.
    - parentId
```
long parentId
```
      The transaction ID of the parent transaction (or 0, if no parent).
    - name
```
java.lang.String name
```
      The transaction name, including the thread name if available.
- Class com.sleepycat.je.TransactionTimeoutException extends LockConflictException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.UniqueConstraintException extends SecondaryConstraintException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.VersionMismatchException extends EnvironmentFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.XAFailureException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
Package com.sleepycat.je.jca.ra
- Class com.sleepycat.je.jca.ra.JEConnectionFactoryImpl extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  410682596L
  - Serialized Fields
    - manager
```
javax.resource.spi.ConnectionManager manager
```
    - factory
```
javax.resource.spi.ManagedConnectionFactory factory
```
    - reference
```
javax.naming.Reference reference
```
- Class com.sleepycat.je.jca.ra.JEException extends java.lang.Exception implements Serializable
  
  serialVersionUID:
  
  329949514L
- Class com.sleepycat.je.jca.ra.JEManagedConnectionFactory extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  658705244L
Package com.sleepycat.je.rep
- Class com.sleepycat.je.rep.DatabasePreemptedException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - dbName
```
java.lang.String dbName
```
    - dbHandle
```
Database dbHandle
```
- Class com.sleepycat.je.rep.GroupShutdownException extends EnvironmentFailureException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - shutdownTimeMs
```
long shutdownTimeMs
```
    - masterNodeName
```
java.lang.String masterNodeName
```
    - shutdownVLSN
```
com.sleepycat.je.utilint.VLSN shutdownVLSN
```
- Class com.sleepycat.je.rep.InsufficientAcksException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - acksPending
```
int acksPending
```
    - acksRequired
```
int acksRequired
```
    - ackTimeoutMs
```
int ackTimeoutMs
```
    - feederState
```
java.lang.String feederState
```
- Class com.sleepycat.je.rep.InsufficientLogException extends RestartRequiredException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - refreshVLSN
```
com.sleepycat.je.utilint.VLSN refreshVLSN
```
    - logProviders
```
java.util.Set<E> logProviders
```
- Class com.sleepycat.je.rep.InsufficientReplicasException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - commitPolicy
```
Durability.ReplicaAckPolicy commitPolicy
```
    - requiredAckCount
```
int requiredAckCount
```
    - availableReplicas
```
java.util.Set<E> availableReplicas
```
- Class com.sleepycat.je.rep.LockPreemptedException extends LockConflictException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.rep.LogOverwriteException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  19238344223L
- Class com.sleepycat.je.rep.MasterReplicaTransitionException extends RestartRequiredException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.rep.MasterStateException extends StateChangeException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.rep.MasterTransferFailureException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.rep.MemberNotFoundException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.rep.ReplicaConsistencyException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - consistencyPolicy
```
ReplicaConsistencyPolicy consistencyPolicy
```
- Class com.sleepycat.je.rep.ReplicaStateException extends StateChangeException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.rep.ReplicatedEnvironmentStats extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - feederManagerStats
```
com.sleepycat.je.utilint.StatGroup feederManagerStats
```
    - feederTxnStats
```
com.sleepycat.je.utilint.StatGroup feederTxnStats
```
    - replayStats
```
com.sleepycat.je.utilint.StatGroup replayStats
```
    - trackerStats
```
com.sleepycat.je.utilint.StatGroup trackerStats
```
    - protocolStats
```
com.sleepycat.je.utilint.StatGroup protocolStats
```
    - vlsnIndexStats
```
com.sleepycat.je.utilint.StatGroup vlsnIndexStats
```
    - tipsMap
```
java.util.Map<K,V> tipsMap
```
- Class com.sleepycat.je.rep.ReplicationConfig extends ReplicationMutableConfig implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - allowConvert
```
boolean allowConvert
```
- Class com.sleepycat.je.rep.ReplicationMutableConfig extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.rep.ReplicaWriteException extends StateChangeException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.rep.RestartRequiredException extends EnvironmentFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.je.rep.RollbackException extends RestartRequiredException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - lastTxnEnd
```
com.sleepycat.je.utilint.VLSN lastTxnEnd
```
    - matchpointVLSN
```
com.sleepycat.je.utilint.VLSN matchpointVLSN
```
    - nodeName
```
java.lang.String nodeName
```
    - searchResults
```
com.sleepycat.je.rep.stream.MatchpointSearchResults searchResults
```
- Class com.sleepycat.je.rep.RollbackProhibitedException extends RestartRequiredException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - searchResults
```
com.sleepycat.je.rep.stream.MatchpointSearchResults searchResults
```
    - nodeName
```
java.lang.String nodeName
```
    - rollbackTxnLimit
```
int rollbackTxnLimit
```
    - matchpointVLSN
```
com.sleepycat.je.utilint.VLSN matchpointVLSN
```
- Class com.sleepycat.je.rep.StateChangeException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
  - Serialized Fields
    - stateChangeEvent
```
StateChangeEvent stateChangeEvent
```
- Class com.sleepycat.je.rep.UnknownMasterException extends StateChangeException implements Serializable
  
  serialVersionUID:
  
  1L
Package com.sleepycat.je.util
- Class com.sleepycat.je.util.LogVerificationException extends java.io.IOException implements Serializable
  
  serialVersionUID:
  
  1L
Package com.sleepycat.persist
- Class com.sleepycat.persist.IndexNotAvailableException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.persist.StoreExistsException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1L
- Class com.sleepycat.persist.StoreNotFoundException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  1895430616L
Package com.sleepycat.persist.evolve
- Class com.sleepycat.persist.evolve.Converter extends Mutation implements Serializable
  
  serialVersionUID:
  
  4558176842096181863L
  - Serialized Fields
    - conversion
```
Conversion conversion
```
- Class com.sleepycat.persist.evolve.DeletedClassException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  518500929L
- Class com.sleepycat.persist.evolve.Deleter extends Mutation implements Serializable
  
  serialVersionUID:
  
  446348511871654947L
- Class com.sleepycat.persist.evolve.EntityConverter extends Converter implements Serializable
  
  serialVersionUID:
  
  -988428985370593743L
  - Serialized Fields
    - deletedKeys
```
java.util.Set<E> deletedKeys
```
- Class com.sleepycat.persist.evolve.IncompatibleClassException extends OperationFailureException implements Serializable
  
  serialVersionUID:
  
  2103957824L
- Class com.sleepycat.persist.evolve.Mutation extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  -8094431582953129268L
  - Serialized Fields
    - className
```
java.lang.String className
```
    - classVersion
```
int classVersion
```
    - fieldName
```
java.lang.String fieldName
```
- Class com.sleepycat.persist.evolve.Mutations extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  -1744401530444812916L
  - Serialized Fields
    - renamers
```
java.util.Map<K,V> renamers
```
    - deleters
```
java.util.Map<K,V> deleters
```
    - converters
```
java.util.Map<K,V> converters
```
- Class com.sleepycat.persist.evolve.Renamer extends Mutation implements Serializable
  
  serialVersionUID:
  
  2238151684405810427L
  - Serialized Fields
    - newName
```
java.lang.String newName
```
Package com.sleepycat.persist.model
- Class com.sleepycat.persist.model.ClassMetadata extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  -2520207423701776679L
  - Serialized Fields
    - className
```
java.lang.String className
```
    - version
```
int version
```
    - proxiedClassName
```
java.lang.String proxiedClassName
```
    - entityClass
```
boolean entityClass
```
    - primaryKey
```
PrimaryKeyMetadata primaryKey
```
    - secondaryKeys
```
java.util.Map<K,V> secondaryKeys
```
    - compositeKeyFields
```
java.util.List<E> compositeKeyFields
```
    - persistentFields
```
java.util.Collection<E> persistentFields
```
- Class com.sleepycat.persist.model.EntityMetadata extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  4224509631681963159L
  - Serialized Fields
    - className
```
java.lang.String className
```
    - primaryKey
```
PrimaryKeyMetadata primaryKey
```
    - secondaryKeys
```
java.util.Map<K,V> secondaryKeys
```
- Class com.sleepycat.persist.model.FieldMetadata extends java.lang.Object implements Serializable
  
  serialVersionUID:
  
  -9037650229184174279L
  - Serialized Fields
    - name
```
java.lang.String name
```
    - className
```
java.lang.String className
```
    - declaringClassName
```
java.lang.String declaringClassName
```
- Class com.sleepycat.persist.model.SecondaryKeyMetadata extends FieldMetadata implements Serializable
  
  serialVersionUID:
  
  8118924993396722502L
  - Serialized Fields
    - keyName
```
java.lang.String keyName
```
    - relationship
```
Relationship relationship
```
    - elementClassName
```
java.lang.String elementClassName
```
    - relatedEntity
```
java.lang.String relatedEntity
```
    - deleteAction
```
DeleteAction deleteAction
```
- Class com.sleepycat.persist.model.PrimaryKeyMetadata extends FieldMetadata implements Serializable
  
  serialVersionUID:
  
  2946863622972437018L
  - Serialized Fields
    - sequenceName
```
java.lang.String sequenceName
```
Package com.sleepycat.util
- Class com.sleepycat.util.IOExceptionWrapper extends java.io.IOException implements Serializable
  
  serialVersionUID:
  
  753416466L
  - Serialized Fields
    - e
```
java.lang.Throwable e
```
- Class com.sleepycat.util.RuntimeExceptionWrapper extends java.lang.RuntimeException implements Serializable
  
  serialVersionUID:
  
  1106961350L

Serialized Form

Package com.sleepycat.je

Class com.sleepycat.je.BtreeStats extends DatabaseStats implements Serializable

Serialized Fields

dbImplStats

treeStats

Class com.sleepycat.je.CommitToken extends java.lang.Object implements Serializable

Serialized Fields

repenvUUID

vlsn

Class com.sleepycat.je.DatabaseEntry extends java.lang.Object implements Serializable

Serialized Fields

data

dlen

doff

offset

size

partial

Class com.sleepycat.je.DatabaseException extends java.lang.RuntimeException implements Serializable

Serialized Fields

extraInfo

Class com.sleepycat.je.DatabaseExistsException extends OperationFailureException implements Serializable

Class com.sleepycat.je.DatabaseNotFoundException extends OperationFailureException implements Serializable

Class com.sleepycat.je.DatabaseStats extends java.lang.Object implements Serializable

Class com.sleepycat.je.DeadlockException extends LockConflictException implements Serializable

Class com.sleepycat.je.DeleteConstraintException extends SecondaryConstraintException implements Serializable

Class com.sleepycat.je.DiskOrderedCursorProducerException extends OperationFailureException implements Serializable

Class com.sleepycat.je.DuplicateDataException extends OperationFailureException implements Serializable

Class com.sleepycat.je.EnvironmentConfig extends EnvironmentMutableConfig implements Serializable

Serialized Fields

allowCreate

nodeName

Class com.sleepycat.je.EnvironmentFailureException extends RunRecoveryException implements Serializable

Serialized Fields

alreadyThrown

reason

Class com.sleepycat.je.EnvironmentLockedException extends EnvironmentFailureException implements Serializable

Class com.sleepycat.je.EnvironmentMutableConfig extends java.lang.Object implements Serializable

Serialized Fields

txnNoSync

txnWriteNoSync

cacheMode

Class com.sleepycat.je.EnvironmentNotFoundException extends EnvironmentFailureException implements Serializable

Class com.sleepycat.je.EnvironmentStats extends java.lang.Object implements Serializable

Serialized Fields

incompStats

cacheStats

ckptStats

cleanerStats

logStats

lockStats

envImplStats

Class com.sleepycat.je.ForeignConstraintException extends SecondaryConstraintException implements Serializable

Class com.sleepycat.je.LockConflictException extends OperationFailureException implements Serializable

Serialized Fields

ownerTxnIds

waiterTxnIds

timeoutMillis

Class com.sleepycat.je.LockNotAvailableException extends LockConflictException implements Serializable

Class com.sleepycat.je.LockNotGrantedException extends DeadlockException implements Serializable

Class com.sleepycat.je.LockStats extends java.lang.Object implements Serializable

Serialized Fields

basicStats

latchStats

tableStats

Class com.sleepycat.je.LockTimeoutException extends LockConflictException implements Serializable

Class com.sleepycat.je.LogWriteException extends EnvironmentFailureException implements Serializable

Class com.sleepycat.je.OperationFailureException extends DatabaseException implements Serializable

Class com.sleepycat.je.PreloadStats extends java.lang.Object implements Serializable

Serialized Fields

nINsLoaded

nBINsLoaded

nLNsLoaded

nDINsLoaded

nDBINsLoaded

nDupCountLNsLoaded

nCountMemoryExceeded

status

Class com.sleepycat.je.PreloadStatus extends java.lang.Object implements Serializable

Serialized Fields