TableProperties

java.lang.Object
- org.rocksdb.TableProperties

```
public class TableProperties
extends java.lang.Object
```
TableProperties contains read-only properties of its associated table.

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`boolean`	`equals(java.lang.Object o)`
`long`	`getColumnFamilyId()` Get the ID of column family for this SST file, corresponding to the column family identified by `getColumnFamilyName()`.
`byte[]`	`getColumnFamilyName()` Get the name of the column family with which this SST file is associated.
`java.lang.String`	`getComparatorName()` Get the name of the comparator used in this table.
`java.lang.String`	`getCompressionName()` Get the name of the compression algorithm used to compress the SST files.
`long`	`getCreationTime()` The time when the SST file was created.
`long`	`getDataSize()` Get the total size of all data blocks.
`long`	`getFastCompressionEstimatedDataSize()` Get the estimated size of data blocks compressed with a relatively faster compression algorithm.
`java.lang.String`	`getFilterPolicyName()` Get the name of the filter policy used in this table.
`long`	`getFilterSize()` Get the size of filter block.
`long`	`getFixedKeyLen()` Get the length of the keys.
`long`	`getFormatVersion()` Get the format version, reserved for backward compatibility.
`long`	`getIndexKeyIsUserKey()` Whether the index key is user key.
`long`	`getIndexPartitions()` Get the total number of index partitions if `IndexType.kTwoLevelIndexSearch` is used.
`long`	`getIndexSize()` Get the size of index block.
`long`	`getIndexValueIsDeltaEncoded()` Whether delta encoding is used to encode the index values.
`java.lang.String`	`getMergeOperatorName()` Get the name of the merge operator used in this table.
`long`	`getNumDataBlocks()` Get the number of blocks in this table.
`long`	`getNumDeletions()` Get the number of deletions in the table.
`long`	`getNumEntries()` Get the number of entries in this table.
`long`	`getNumMergeOperands()` Get the number of merge operands in the table.
`long`	`getNumRangeDeletions()` Get the number of range deletions in this table.
`long`	`getOldestKeyTime()` Get the timestamp of the earliest key.
`java.lang.String`	`getPrefixExtractorName()` Get the name of the prefix extractor used in this table.
`java.lang.String`	`getPropertyCollectorsNames()` Get the names of the property collectors factories used in this table.
`long`	`getRawKeySize()` Get the total raw key size.
`long`	`getRawValueSize()` Get the total raw value size.
`java.util.Map<java.lang.String,java.lang.String>`	`getReadableProperties()` Get the readable properties.
`long`	`getSlowCompressionEstimatedDataSize()` Get the estimated size of data blocks compressed with a relatively slower compression algorithm.
`long`	`getTopLevelIndexSize()` Size of the top-level index if `IndexType.kTwoLevelIndexSearch` is used.
`java.util.Map<java.lang.String,java.lang.String>`	`getUserCollectedProperties()` Get the user collected properties.
`int`	`hashCode()`

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

- 方法详细资料
  - getDataSize
```
public long getDataSize()
```
    Get the total size of all data blocks.
    
    返回:
    
    the total size of all data blocks.
  - getIndexSize
```
public long getIndexSize()
```
    Get the size of index block.
    
    返回:
    
    the size of index block.
  - getIndexPartitions
```
public long getIndexPartitions()
```
    Get the total number of index partitions if IndexType.kTwoLevelIndexSearch is used.
    
    返回:
    
    the total number of index partitions.
  - getTopLevelIndexSize
```
public long getTopLevelIndexSize()
```
    Size of the top-level index if IndexType.kTwoLevelIndexSearch is used.
    
    返回:
    
    the size of the top-level index.
  - getIndexKeyIsUserKey
```
public long getIndexKeyIsUserKey()
```
    Whether the index key is user key. Otherwise it includes 8 byte of sequence number added by internal key format.
    
    返回:
    
    the index key
  - getIndexValueIsDeltaEncoded
```
public long getIndexValueIsDeltaEncoded()
```
    Whether delta encoding is used to encode the index values.
    
    返回:
    
    whether delta encoding is used to encode the index values.
  - getFilterSize
```
public long getFilterSize()
```
    Get the size of filter block.
    
    返回:
    
    the size of filter block.
  - getRawKeySize
```
public long getRawKeySize()
```
    Get the total raw key size.
    
    返回:
    
    the total raw key size.
  - getRawValueSize
```
public long getRawValueSize()
```
    Get the total raw value size.
    
    返回:
    
    the total raw value size.
  - getNumDataBlocks
```
public long getNumDataBlocks()
```
    Get the number of blocks in this table.
    
    返回:
    
    the number of blocks in this table.
  - getNumEntries
```
public long getNumEntries()
```
    Get the number of entries in this table.
    
    返回:
    
    the number of entries in this table.
  - getNumDeletions
```
public long getNumDeletions()
```
    Get the number of deletions in the table.
    
    返回:
    
    the number of deletions in the table.
  - getNumMergeOperands
```
public long getNumMergeOperands()
```
    Get the number of merge operands in the table.
    
    返回:
    
    the number of merge operands in the table.
  - getNumRangeDeletions
```
public long getNumRangeDeletions()
```
    Get the number of range deletions in this table.
    
    返回:
    
    the number of range deletions in this table.
  - getFormatVersion
```
public long getFormatVersion()
```
    Get the format version, reserved for backward compatibility.
    
    返回:
    
    the format version.
  - getFixedKeyLen
```
public long getFixedKeyLen()
```
    Get the length of the keys.
    
    返回:
    
    0 when the key is variable length, otherwise number of bytes for each key.
  - getColumnFamilyId
```
public long getColumnFamilyId()
```
    Get the ID of column family for this SST file, corresponding to the column family identified by getColumnFamilyName().
    
    返回:
    
    the id of the column family.
  - getCreationTime
```
public long getCreationTime()
```
    The time when the SST file was created. Since SST files are immutable, this is equivalent to last modified time.
    
    返回:
    
    the created time.
  - getOldestKeyTime
```
public long getOldestKeyTime()
```
    Get the timestamp of the earliest key.
    
    返回:
    
    0 means unknown, otherwise the timestamp.
  - getSlowCompressionEstimatedDataSize
```
public long getSlowCompressionEstimatedDataSize()
```
    Get the estimated size of data blocks compressed with a relatively slower compression algorithm.
    
    返回:
    
    0 means unknown, otherwise the timestamp.
  - getFastCompressionEstimatedDataSize
```
public long getFastCompressionEstimatedDataSize()
```
    Get the estimated size of data blocks compressed with a relatively faster compression algorithm.
    
    返回:
    
    0 means unknown, otherwise the timestamp.
  - getColumnFamilyName
```
public byte[] getColumnFamilyName()
```
    Get the name of the column family with which this SST file is associated.
    
    返回:
    
    the name of the column family, or null if the column family is unknown.
  - getFilterPolicyName
```
public java.lang.String getFilterPolicyName()
```
    Get the name of the filter policy used in this table.
    
    返回:
    
    the name of the filter policy, or null if no filter policy is used.
  - getComparatorName
```
public java.lang.String getComparatorName()
```
    Get the name of the comparator used in this table.
    
    返回:
    
    the name of the comparator.
  - getMergeOperatorName
```
public java.lang.String getMergeOperatorName()
```
    Get the name of the merge operator used in this table.
    
    返回:
    
    the name of the merge operator, or null if no merge operator is used.
  - getPrefixExtractorName
```
public java.lang.String getPrefixExtractorName()
```
    Get the name of the prefix extractor used in this table.
    
    返回:
    
    the name of the prefix extractor, or null if no prefix extractor is used.
  - getPropertyCollectorsNames
```
public java.lang.String getPropertyCollectorsNames()
```
    Get the names of the property collectors factories used in this table.
    
    返回:
    
    the names of the property collector factories separated by commas, e.g. {collector_name[1]},{collector_name[2]},...
  - getCompressionName
```
public java.lang.String getCompressionName()
```
    Get the name of the compression algorithm used to compress the SST files.
    
    返回:
    
    the name of the compression algorithm.
  - getUserCollectedProperties
```
public java.util.Map<java.lang.String,java.lang.String> getUserCollectedProperties()
```
    Get the user collected properties.
    
    返回:
    
    the user collected properties.
  - getReadableProperties
```
public java.util.Map<java.lang.String,java.lang.String> getReadableProperties()
```
    Get the readable properties.
    
    返回:
    
    the readable properties.
  - equals
```
public boolean equals(java.lang.Object o)
```
    覆盖:
    
    equals 在类中 java.lang.Object
  - hashCode
```
public int hashCode()
```
    覆盖:
    
    hashCode 在类中 java.lang.Object

类 TableProperties

方法概要

从类继承的方法 java.lang.Object

方法详细资料

getDataSize

getIndexSize

getIndexPartitions

getTopLevelIndexSize

getIndexKeyIsUserKey

getIndexValueIsDeltaEncoded

getFilterSize

getRawKeySize

getRawValueSize

getNumDataBlocks

getNumEntries

getNumDeletions

getNumMergeOperands

getNumRangeDeletions

getFormatVersion

getFixedKeyLen

getColumnFamilyId

getCreationTime

getOldestKeyTime

getSlowCompressionEstimatedDataSize

getFastCompressionEstimatedDataSize

getColumnFamilyName

getFilterPolicyName

getComparatorName

getMergeOperatorName

getPrefixExtractorName

getPropertyCollectorsNames

getCompressionName

getUserCollectedProperties

getReadableProperties

equals

hashCode