ReadOptions

java.lang.Object
- org.rocksdb.AbstractNativeReference
- - org.rocksdb.AbstractImmutableNativeReference
  - - org.rocksdb.RocksObject
    - - org.rocksdb.ReadOptions

所有已实现的接口:

java.lang.AutoCloseable
```
public class ReadOptions
extends RocksObject
```
The class that controls the get behavior.
Note that dispose() must be called before an Options instance become out-of-scope to release the allocated memory in c++.

字段概要
- 从类继承的字段 org.rocksdb.RocksObject
  nativeHandle_
- 从类继承的字段 org.rocksdb.AbstractImmutableNativeReference
  owningHandle_

构造器概要

构造器
构造器和说明

ReadOptions()

ReadOptions(boolean verifyChecksums, boolean fillCache)

ReadOptions(ReadOptions other)
Copy constructor.

构造器
构造器和说明
`ReadOptions()`
`ReadOptions(boolean verifyChecksums, boolean fillCache)`
`ReadOptions(ReadOptions other)` Copy constructor.

方法概要

所有方法实例方法具体方法已过时的方法
限定符和类型	方法和说明
`boolean`	`autoPrefixMode()` When true, by default use total_order_seek = true, and RocksDB can selectively enable prefix seek mode if won't generate a different result from total_order_seek, based on seek key, and iterator upper bound.
`boolean`	`backgroundPurgeOnIteratorCleanup()` If true, when PurgeObsoleteFile is called in CleanupIteratorState, we schedule a background job in the flush job queue and delete obsolete files in background.
`long`	`deadline()` Deadline for completing an API call (Get/MultiGet/Seek/Next for now) in microseconds.
`protected void`	`disposeInternal(long handle)`
`boolean`	`fillCache()` Fill the cache when loading the block-based sst formated db.
`boolean`	`ignoreRangeDeletions()` If true, keys deleted using the DeleteRange() API will be visible to readers until they are naturally deleted during compaction.
`long`	`ioTimeout()` A timeout in microseconds to be passed to the underlying FileSystem for reads.
`Slice`	`iterateLowerBound()` Returns the smallest key at which the backward iterator can return an entry.
`Slice`	`iterateUpperBound()` Returns the largest key at which the forward iterator can return an entry.
`Slice`	`iterStartTs()` Timestamp of operation.
`boolean`	`managed()` 已过时。 This options is not used anymore.
`long`	`maxSkippableInternalKeys()` A threshold for the number of keys that can be skipped before failing an iterator seek as incomplete.
`boolean`	`pinData()` Returns whether the blocks loaded by the iterator will be pinned in memory
`boolean`	`prefixSameAsStart()` Returns whether the iterator only iterates over the same prefix as the seek
`long`	`readaheadSize()` If non-zero, NewIterator will create a new table reader which performs reads of the given size.
`ReadTier`	`readTier()` Returns the current read tier.
`ReadOptions`	`setAutoPrefixMode(boolean mode)` When true, by default use total_order_seek = true, and RocksDB can selectively enable prefix seek mode if won't generate a different result from total_order_seek, based on seek key, and iterator upper bound.
`ReadOptions`	`setBackgroundPurgeOnIteratorCleanup(boolean backgroundPurgeOnIteratorCleanup)` If true, when PurgeObsoleteFile is called in CleanupIteratorState, we schedule a background job in the flush job queue and delete obsolete files in background.
`ReadOptions`	`setDeadline(long deadlineTime)` Deadline for completing an API call (Get/MultiGet/Seek/Next for now) in microseconds.
`ReadOptions`	`setFillCache(boolean fillCache)` Fill the cache when loading the block-based sst formatted db.
`ReadOptions`	`setIgnoreRangeDeletions(boolean ignoreRangeDeletions)` If true, keys deleted using the DeleteRange() API will be visible to readers until they are naturally deleted during compaction.
`ReadOptions`	`setIoTimeout(long ioTimeout)` A timeout in microseconds to be passed to the underlying FileSystem for reads.
`ReadOptions`	`setIterateLowerBound(AbstractSlice<?> iterateLowerBound)` Defines the smallest key at which the backward iterator can return an entry.
`ReadOptions`	`setIterateUpperBound(AbstractSlice<?> iterateUpperBound)` Defines the extent up to which the forward iterator can return entries.
`ReadOptions`	`setIterStartTs(AbstractSlice<?> iterStartTs)` Timestamp of operation.
`ReadOptions`	`setManaged(boolean managed)` 已过时。 This options is not used anymore.
`ReadOptions`	`setMaxSkippableInternalKeys(long maxSkippableInternalKeys)` A threshold for the number of keys that can be skipped before failing an iterator seek as incomplete.
`ReadOptions`	`setPinData(boolean pinData)` Keep the blocks loaded by the iterator pinned in memory as long as the iterator is not deleted, If used when reading from tables created with BlockBasedTableOptions::use_delta_encoding = false, Iterator's property "rocksdb.iterator.is-key-pinned" is guaranteed to return 1.
`ReadOptions`	`setPrefixSameAsStart(boolean prefixSameAsStart)` Enforce that the iterator only iterates over the same prefix as the seek.
`ReadOptions`	`setReadaheadSize(long readaheadSize)` If non-zero, NewIterator will create a new table reader which performs reads of the given size.
`ReadOptions`	`setReadTier(ReadTier readTier)` Specify if this read request should process data that ALREADY resides on a particular cache.
`ReadOptions`	`setSnapshot(Snapshot snapshot)` If "snapshot" is non-nullptr, read as of the supplied snapshot (which must belong to the DB that is being read and which must not have been released).
`ReadOptions`	`setTableFilter(AbstractTableFilter tableFilter)` A callback to determine whether relevant keys for this scan exist in a given table based on the table's properties.
`ReadOptions`	`setTailing(boolean tailing)` Specify to create a tailing iterator -- a special iterator that has a view of the complete database (i.e. it can also be used to read newly added data) and is optimized for sequential reads.
`ReadOptions`	`setTimestamp(AbstractSlice<?> timestamp)` Timestamp of operation.
`ReadOptions`	`setTotalOrderSeek(boolean totalOrderSeek)` Enable a total order seek regardless of index format (e.g. hash index) used in the table.
`ReadOptions`	`setValueSizeSoftLimit(long valueSizeSoftLimit)` It limits the maximum cumulative value size of the keys in batch while reading through MultiGet.
`ReadOptions`	`setVerifyChecksums(boolean verifyChecksums)` If true, all data read from underlying storage will be verified against corresponding checksums.
`Snapshot`	`snapshot()` Returns the currently assigned Snapshot instance.
`boolean`	`tailing()` Specify to create a tailing iterator -- a special iterator that has a view of the complete database (i.e. it can also be used to read newly added data) and is optimized for sequential reads.
`Slice`	`timestamp()` Timestamp of operation.
`boolean`	`totalOrderSeek()` Returns whether a total seek order will be used
`long`	`valueSizeSoftLimit()` It limits the maximum cumulative value size of the keys in batch while reading through MultiGet.
`boolean`	`verifyChecksums()` If true, all data read from underlying storage will be verified against corresponding checksums.

从类继承的方法 org.rocksdb.RocksObject
disposeInternal, getNativeHandle

从类继承的方法 org.rocksdb.AbstractImmutableNativeReference
close, disOwnNativeHandle, isOwningHandle

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - ReadOptions
```
public ReadOptions()
```
  - ReadOptions
```
public ReadOptions(boolean verifyChecksums,
                   boolean fillCache)
```
    参数:
    
    verifyChecksums - verification will be performed on every read when set to true
    
    fillCache - if true, then fill-cache behavior will be performed.
  - ReadOptions
```
public ReadOptions(ReadOptions other)
```
    Copy constructor.
    NOTE: This does a shallow copy, which means snapshot, iterate_upper_bound and other pointers will be cloned!
    
    参数:
    
    other - The ReadOptions to copy.
- 方法详细资料
  - verifyChecksums
```
public boolean verifyChecksums()
```
    If true, all data read from underlying storage will be verified against corresponding checksums. Default: true
    
    返回:
    
    true if checksum verification is on.
  - setVerifyChecksums
```
public ReadOptions setVerifyChecksums(boolean verifyChecksums)
```
    If true, all data read from underlying storage will be verified against corresponding checksums. Default: true
    
    参数:
    
    verifyChecksums - if true, then checksum verification will be performed on every read.
    
    返回:
    
    the reference to the current ReadOptions.
  - fillCache
```
public boolean fillCache()
```
    Fill the cache when loading the block-based sst formated db. Callers may wish to set this field to false for bulk scans. Default: true
    
    返回:
    
    true if the fill-cache behavior is on.
  - setFillCache
```
public ReadOptions setFillCache(boolean fillCache)
```
    Fill the cache when loading the block-based sst formatted db. Callers may wish to set this field to false for bulk scans. Default: true
    
    参数:
    
    fillCache - if true, then fill-cache behavior will be performed.
    
    返回:
    
    the reference to the current ReadOptions.
  - snapshot
```
public Snapshot snapshot()
```
    Returns the currently assigned Snapshot instance.
    
    返回:
    
    the Snapshot assigned to this instance. If no Snapshot is assigned null.
  - setSnapshot
```
public ReadOptions setSnapshot(Snapshot snapshot)
```
    If "snapshot" is non-nullptr, read as of the supplied snapshot (which must belong to the DB that is being read and which must not have been released). If "snapshot" is nullptr, use an implicit snapshot of the state at the beginning of this read operation.
    
    Default: null
    
    参数:
    
    snapshot - Snapshot instance
    
    返回:
    
    the reference to the current ReadOptions.
  - readTier
```
public ReadTier readTier()
```
    Returns the current read tier.
    
    返回:
    
    the read tier in use, by default ReadTier.READ_ALL_TIER
  - setReadTier
```
public ReadOptions setReadTier(ReadTier readTier)
```
    Specify if this read request should process data that ALREADY resides on a particular cache. If the required data is not found at the specified cache, then RocksDBException is thrown.
    
    参数:
    
    readTier - ReadTier instance
    
    返回:
    
    the reference to the current ReadOptions.
  - tailing
```
public boolean tailing()
```
    Specify to create a tailing iterator -- a special iterator that has a view of the complete database (i.e. it can also be used to read newly added data) and is optimized for sequential reads. It will return records that were inserted into the database after the creation of the iterator. Default: false
    
    返回:
    
    true if tailing iterator is enabled.
  - setTailing
```
public ReadOptions setTailing(boolean tailing)
```
    Specify to create a tailing iterator -- a special iterator that has a view of the complete database (i.e. it can also be used to read newly added data) and is optimized for sequential reads. It will return records that were inserted into the database after the creation of the iterator. Default: false
    
    参数:
    
    tailing - if true, then tailing iterator will be enabled.
    
    返回:
    
    the reference to the current ReadOptions.
  - managed
```
@Deprecated
public boolean managed()
```
    已过时。 This options is not used anymore.
    
    Returns whether managed iterators will be used.
    
    返回:
    
    the setting of whether managed iterators will be used, by default false
  - setManaged
```
@Deprecated
public ReadOptions setManaged(boolean managed)
```
    已过时。 This options is not used anymore.
    
    Specify to create a managed iterator -- a special iterator that uses less resources by having the ability to free its underlying resources on request.
    
    参数:
    
    managed - if true, then managed iterators will be enabled.
    
    返回:
    
    the reference to the current ReadOptions.
  - totalOrderSeek
```
public boolean totalOrderSeek()
```
    Returns whether a total seek order will be used
    
    返回:
    
    the setting of whether a total seek order will be used
  - setTotalOrderSeek
```
public ReadOptions setTotalOrderSeek(boolean totalOrderSeek)
```
    Enable a total order seek regardless of index format (e.g. hash index) used in the table. Some table format (e.g. plain table) may not support this option.
    
    参数:
    
    totalOrderSeek - if true, then total order seek will be enabled.
    
    返回:
    
    the reference to the current ReadOptions.
  - prefixSameAsStart
```
public boolean prefixSameAsStart()
```
    Returns whether the iterator only iterates over the same prefix as the seek
    
    返回:
    
    the setting of whether the iterator only iterates over the same prefix as the seek, default is false
  - setPrefixSameAsStart
```
public ReadOptions setPrefixSameAsStart(boolean prefixSameAsStart)
```
    Enforce that the iterator only iterates over the same prefix as the seek. This option is effective only for prefix seeks, i.e. prefix_extractor is non-null for the column family and totalOrderSeek() is false. Unlike iterate_upper_bound, #setPrefixSameAsStart(boolean) only works within a prefix but in both directions.
    
    参数:
    
    prefixSameAsStart - if true, then the iterator only iterates over the same prefix as the seek
    
    返回:
    
    the reference to the current ReadOptions.
  - pinData
```
public boolean pinData()
```
    Returns whether the blocks loaded by the iterator will be pinned in memory
    
    返回:
    
    the setting of whether the blocks loaded by the iterator will be pinned in memory
  - setPinData
```
public ReadOptions setPinData(boolean pinData)
```
    Keep the blocks loaded by the iterator pinned in memory as long as the iterator is not deleted, If used when reading from tables created with BlockBasedTableOptions::use_delta_encoding = false, Iterator's property "rocksdb.iterator.is-key-pinned" is guaranteed to return 1.
    
    参数:
    
    pinData - if true, the blocks loaded by the iterator will be pinned
    
    返回:
    
    the reference to the current ReadOptions.
  - backgroundPurgeOnIteratorCleanup
```
public boolean backgroundPurgeOnIteratorCleanup()
```
    If true, when PurgeObsoleteFile is called in CleanupIteratorState, we schedule a background job in the flush job queue and delete obsolete files in background.
    Default: false
    
    返回:
    
    true when PurgeObsoleteFile is called in CleanupIteratorState
  - setBackgroundPurgeOnIteratorCleanup
```
public ReadOptions setBackgroundPurgeOnIteratorCleanup(boolean backgroundPurgeOnIteratorCleanup)
```
    If true, when PurgeObsoleteFile is called in CleanupIteratorState, we schedule a background job in the flush job queue and delete obsolete files in background.
    Default: false
    
    参数:
    
    backgroundPurgeOnIteratorCleanup - true when PurgeObsoleteFile is called in CleanupIteratorState
    
    返回:
    
    the reference to the current ReadOptions.
  - readaheadSize
```
public long readaheadSize()
```
    If non-zero, NewIterator will create a new table reader which performs reads of the given size. Using a large size (> 2MB) can improve the performance of forward iteration on spinning disks.
    Default: 0
    
    返回:
    
    The readahead size is bytes
  - setReadaheadSize
```
public ReadOptions setReadaheadSize(long readaheadSize)
```
    If non-zero, NewIterator will create a new table reader which performs reads of the given size. Using a large size (> 2MB) can improve the performance of forward iteration on spinning disks.
    Default: 0
    
    参数:
    
    readaheadSize - The readahead size is bytes
    
    返回:
    
    the reference to the current ReadOptions.
  - maxSkippableInternalKeys
```
public long maxSkippableInternalKeys()
```
    A threshold for the number of keys that can be skipped before failing an iterator seek as incomplete.
    
    返回:
    
    the number of keys that can be skipped before failing an iterator seek as incomplete.
  - setMaxSkippableInternalKeys
```
public ReadOptions setMaxSkippableInternalKeys(long maxSkippableInternalKeys)
```
    A threshold for the number of keys that can be skipped before failing an iterator seek as incomplete. The default value of 0 should be used to never fail a request as incomplete, even on skipping too many keys.
    Default: 0
    
    参数:
    
    maxSkippableInternalKeys - the number of keys that can be skipped before failing an iterator seek as incomplete.
    
    返回:
    
    the reference to the current ReadOptions.
  - ignoreRangeDeletions
```
public boolean ignoreRangeDeletions()
```
    If true, keys deleted using the DeleteRange() API will be visible to readers until they are naturally deleted during compaction. This improves read performance in DBs with many range deletions.
    Default: false
    
    返回:
    
    true if keys deleted using the DeleteRange() API will be visible
  - setIgnoreRangeDeletions
```
public ReadOptions setIgnoreRangeDeletions(boolean ignoreRangeDeletions)
```
    If true, keys deleted using the DeleteRange() API will be visible to readers until they are naturally deleted during compaction. This improves read performance in DBs with many range deletions.
    Default: false
    
    参数:
    
    ignoreRangeDeletions - true if keys deleted using the DeleteRange() API should be visible
    
    返回:
    
    the reference to the current ReadOptions.
  - setIterateLowerBound
```
public ReadOptions setIterateLowerBound(AbstractSlice<?> iterateLowerBound)
```
    Defines the smallest key at which the backward iterator can return an entry. Once the bound is passed, AbstractRocksIterator.isValid() will be false.
    The lower bound is inclusive i.e. the bound value is a valid entry.
    If prefix_extractor is not null, the Seek target and `iterate_lower_bound` need to have the same prefix. This is because ordering is not guaranteed outside of prefix domain.
    Default: null
    
    参数:
    
    iterateLowerBound - Slice representing the lower bound
    
    返回:
    
    the reference to the current ReadOptions.
  - iterateLowerBound
```
public Slice iterateLowerBound()
```
    Returns the smallest key at which the backward iterator can return an entry.
    The lower bound is inclusive i.e. the bound value is a valid entry.
    
    返回:
    
    the smallest key, or null if there is no lower bound defined.
  - setIterateUpperBound
```
public ReadOptions setIterateUpperBound(AbstractSlice<?> iterateUpperBound)
```
    Defines the extent up to which the forward iterator can return entries. Once the bound is reached, AbstractRocksIterator.isValid() will be false.
    The upper bound is exclusive i.e. the bound value is not a valid entry.
    If prefix_extractor is not null, the Seek target and iterate_upper_bound need to have the same prefix. This is because ordering is not guaranteed outside of prefix domain.
    Default: null
    
    参数:
    
    iterateUpperBound - Slice representing the upper bound
    
    返回:
    
    the reference to the current ReadOptions.
  - iterateUpperBound
```
public Slice iterateUpperBound()
```
    Returns the largest key at which the forward iterator can return an entry.
    The upper bound is exclusive i.e. the bound value is not a valid entry.
    
    返回:
    
    the largest key, or null if there is no upper bound defined.
  - setTableFilter
```
public ReadOptions setTableFilter(AbstractTableFilter tableFilter)
```
    A callback to determine whether relevant keys for this scan exist in a given table based on the table's properties. The callback is passed the properties of each table during iteration. If the callback returns false, the table will not be scanned. This option only affects Iterators and has no impact on point lookups.
    Default: null (every table will be scanned)
    
    参数:
    
    tableFilter - the table filter for the callback.
    
    返回:
    
    the reference to the current ReadOptions.
  - autoPrefixMode
```
public boolean autoPrefixMode()
```
    When true, by default use total_order_seek = true, and RocksDB can selectively enable prefix seek mode if won't generate a different result from total_order_seek, based on seek key, and iterator upper bound. Default: false
    
    返回:
    
    true if auto prefix mode is set.
  - setAutoPrefixMode
```
public ReadOptions setAutoPrefixMode(boolean mode)
```
    When true, by default use total_order_seek = true, and RocksDB can selectively enable prefix seek mode if won't generate a different result from total_order_seek, based on seek key, and iterator upper bound. Default: false
    
    参数:
    
    mode - auto prefix mode
    
    返回:
    
    the reference to the current ReadOptions.
  - timestamp
```
public Slice timestamp()
```
    Timestamp of operation. Read should return the latest data visible to the specified timestamp. All timestamps of the same database must be of the same length and format. The user is responsible for providing a customized compare function via Comparator to order >key, timestamp> tuples. For iterator, iter_start_ts is the lower bound (older) and timestamp serves as the upper bound. Versions of the same record that fall in the timestamp range will be returned. If iter_start_ts is nullptr, only the most recent version visible to timestamp is returned. The user-specified timestamp feature is still under active development, and the API is subject to change.
    Default: null
    
    返回:
    
    Reference to timestamp or null if there is no timestamp defined.
    
    另请参阅:
    
    iterStartTs()
  - setTimestamp
```
public ReadOptions setTimestamp(AbstractSlice<?> timestamp)
```
    Timestamp of operation. Read should return the latest data visible to the specified timestamp. All timestamps of the same database must be of the same length and format. The user is responsible for providing a customized compare function via Comparator to order <key, timestamp> tuples. For iterator, iter_start_ts is the lower bound (older) and timestamp serves as the upper bound. Versions of the same record that fall in the timestamp range will be returned. If iter_start_ts is nullptr, only the most recent version visible to timestamp is returned. The user-specified timestamp feature is still under active development, and the API is subject to change.
    Default: null
    
    参数:
    
    timestamp - Slice representing the timestamp
    
    返回:
    
    the reference to the current ReadOptions.
    
    另请参阅:
    
    setIterStartTs(AbstractSlice)
  - iterStartTs
```
public Slice iterStartTs()
```
    Timestamp of operation. Read should return the latest data visible to the specified timestamp. All timestamps of the same database must be of the same length and format. The user is responsible for providing a customized compare function via Comparator to order <key, timestamp> tuples. For iterator, iter_start_ts is the lower bound (older) and timestamp serves as the upper bound. Versions of the same record that fall in the timestamp range will be returned. If iter_start_ts is nullptr, only the most recent version visible to timestamp is returned. The user-specified timestamp feature is still under active development, and the API is subject to change.
    Default: null
    
    返回:
    
    Reference to lower bound timestamp or null if there is no lower bound timestamp defined.
  - setIterStartTs
```
public ReadOptions setIterStartTs(AbstractSlice<?> iterStartTs)
```
    Timestamp of operation. Read should return the latest data visible to the specified timestamp. All timestamps of the same database must be of the same length and format. The user is responsible for providing a customized compare function via Comparator to order <key, timestamp> tuples. For iterator, iter_start_ts is the lower bound (older) and timestamp serves as the upper bound. Versions of the same record that fall in the timestamp range will be returned. If iter_start_ts is nullptr, only the most recent version visible to timestamp is returned. The user-specified timestamp feature is still under active development, and the API is subject to change.
    Default: null
    
    参数:
    
    iterStartTs - Reference to lower bound timestamp or null if there is no lower bound timestamp defined
    
    返回:
    
    the reference to the current ReadOptions.
  - deadline
```
public long deadline()
```
    Deadline for completing an API call (Get/MultiGet/Seek/Next for now) in microseconds. It should be set to microseconds since epoch, i.e, gettimeofday or equivalent plus allowed duration in microseconds. The best way is to use env->NowMicros() + some timeout. This is best efforts. The call may exceed the deadline if there is IO involved and the file system doesn't support deadlines, or due to checking for deadline periodically rather than for every key if processing a batch
    
    返回:
    
    deadline time in microseconds
  - setDeadline
```
public ReadOptions setDeadline(long deadlineTime)
```
    Deadline for completing an API call (Get/MultiGet/Seek/Next for now) in microseconds. It should be set to microseconds since epoch, i.e, gettimeofday or equivalent plus allowed duration in microseconds. The best way is to use env->NowMicros() + some timeout. This is best efforts. The call may exceed the deadline if there is IO involved and the file system doesn't support deadlines, or due to checking for deadline periodically rather than for every key if processing a batch
    
    参数:
    
    deadlineTime - deadline time in microseconds.
    
    返回:
    
    the reference to the current ReadOptions.
  - ioTimeout
```
public long ioTimeout()
```
    A timeout in microseconds to be passed to the underlying FileSystem for reads. As opposed to deadline, this determines the timeout for each individual file read request. If a MultiGet/Get/Seek/Next etc call results in multiple reads, each read can last up to io_timeout us.
    
    返回:
    
    ioTimeout time in microseconds
  - setIoTimeout
```
public ReadOptions setIoTimeout(long ioTimeout)
```
    A timeout in microseconds to be passed to the underlying FileSystem for reads. As opposed to deadline, this determines the timeout for each individual file read request. If a MultiGet/Get/Seek/Next etc call results in multiple reads, each read can last up to io_timeout us.
    
    参数:
    
    ioTimeout - time in microseconds.
    
    返回:
    
    the reference to the current ReadOptions.
  - valueSizeSoftLimit
```
public long valueSizeSoftLimit()
```
    It limits the maximum cumulative value size of the keys in batch while reading through MultiGet. Once the cumulative value size exceeds this soft limit then all the remaining keys are returned with status Aborted.
    Default: std::numeric_limits<uint64_t>::max()
    
    返回:
    
    actual valueSizeSofLimit
  - setValueSizeSoftLimit
```
public ReadOptions setValueSizeSoftLimit(long valueSizeSoftLimit)
```
    It limits the maximum cumulative value size of the keys in batch while reading through MultiGet. Once the cumulative value size exceeds this soft limit then all the remaining keys are returned with status Aborted.
    Default: std::numeric_limits<uint64_t>::max()
    
    参数:
    
    valueSizeSoftLimit - the maximum cumulative value size of the keys
    
    返回:
    
    the reference to the current ReadOptions
  - disposeInternal
```
protected final void disposeInternal(long handle)
```
    指定者:
    
    disposeInternal 在类中 RocksObject

类 ReadOptions

字段概要

从类继承的字段 org.rocksdb.RocksObject

从类继承的字段 org.rocksdb.AbstractImmutableNativeReference

构造器概要

方法概要

从类继承的方法 org.rocksdb.RocksObject

从类继承的方法 org.rocksdb.AbstractImmutableNativeReference

从类继承的方法 java.lang.Object

构造器详细资料

ReadOptions

ReadOptions

ReadOptions

方法详细资料

verifyChecksums

setVerifyChecksums

fillCache

setFillCache

snapshot

setSnapshot

readTier

setReadTier

tailing

setTailing

managed

setManaged

totalOrderSeek

setTotalOrderSeek

prefixSameAsStart

setPrefixSameAsStart

pinData

setPinData

backgroundPurgeOnIteratorCleanup

setBackgroundPurgeOnIteratorCleanup

readaheadSize

setReadaheadSize

maxSkippableInternalKeys

setMaxSkippableInternalKeys

ignoreRangeDeletions

setIgnoreRangeDeletions

setIterateLowerBound

iterateLowerBound

setIterateUpperBound

iterateUpperBound

setTableFilter

autoPrefixMode

setAutoPrefixMode

timestamp

setTimestamp

iterStartTs

setIterStartTs

deadline

setDeadline

ioTimeout

setIoTimeout

valueSizeSoftLimit

setValueSizeSoftLimit

disposeInternal