RowQueryCriteria (AliCloud TableStore SDK for Java 5.17.7 API)

java.lang.Object
- com.alicloud.openservices.tablestore.model.RowQueryCriteria

直接已知子类:

MultiRowQueryCriteria, RangeIteratorParameter, RangeRowQueryCriteria, SingleRowQueryCriteria
```
public class RowQueryCriteria
extends Object
```
Basic parameters for reading data from TableStore, mainly including:
- ColumnsToGet: The list of attribute column names to read. If empty, it means reading all columns of the row.
- TimeRange: The range of timestamps to read. If not set, it means reading all versions.
- MaxVersions: The number of versions of the columns to return. If not set, it returns all versions currently retained by OTS.
- Filter: Represents the Filter used for this query. The Filter can perform an initial filter on the data within the query range on the server side to reduce extra data transmission.

构造器概要

构造器
构造器和说明

RowQueryCriteria(String tableName)
Constructor.

构造器
构造器和说明
`RowQueryCriteria(String tableName)` Constructor.

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
`void`	`addColumnsToGet(Collection<String> columnsToGet)` Add the columns to read.
`void`	`addColumnsToGet(String columnName)` Add the column to be read.
`void`	`addColumnsToGet(String[] columnNames)` Add the columns to be read.
`void`	`clearColumnsToGet()` Clear the list of column names that have been set for reading.
`void`	`copyTo(RowQueryCriteria target)`
`boolean`	`getCacheBlocks()` Get the value of the CacheBlocks setting.
`Set<String>`	`getColumnsToGet()` Returns the list of column names to be read (read-only).
`String`	`getEndColumn()`
`Filter`	`getFilter()` Get the Filter used in this query.
`int`	`getMaxVersions()` Get the set MaxVersions.
`String`	`getStartColumn()`
`String`	`getTableName()` Returns the name of the queried table.
`TimeRange`	`getTimeRange()` Get the configured time range.
`boolean`	`hasSetCacheBlock()` Query whether CacheBlocks is set.
`boolean`	`hasSetEndColumn()`
`boolean`	`hasSetFilter()` Query whether the Filter is set.
`boolean`	`hasSetMaxVersions()` Query whether MaxVersions is set.
`boolean`	`hasSetStartColumn()`
`boolean`	`hasSetTimeRange()` Query whether TimeRange has been set.
`int`	`numColumnsToGet()` Returns the number of columns to be read.
`void`	`setCacheBlocks(boolean cacheBlocks)` Set whether the data returned by this read operation should enter the BlockCache.
`void`	`setEndColumn(String endColumn)`
`void`	`setFilter(Filter filter)` Set the Filter to be used for this query.
`void`	`setMaxVersions(int maxVersions)` Set MaxVersions.
`void`	`setStartColumn(String startColumn)`
`void`	`setTableName(String tableName)` Sets the name of the table to query.
`void`	`setTimeRange(TimeRange timeRange)` Set the timestamp range to read.
`void`	`setTimestamp(long timestamp)` Set the specific timestamp to read.

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
  - RowQueryCriteria
```
public RowQueryCriteria(String tableName)
```
    Constructor.
    
    参数:
    
    tableName - The name of the table to query.
- 方法详细资料
  - setTableName
```
public void setTableName(String tableName)
```
    Sets the name of the table to query.
    
    参数:
    
    tableName - The name of the table.
  - getTableName
```
public String getTableName()
```
    Returns the name of the queried table.
    
    返回:
    
    the name of the table
  - getColumnsToGet
```
public Set<String> getColumnsToGet()
```
    Returns the list of column names to be read (read-only).
    
    返回:
    
    The list of column names (read-only).
  - addColumnsToGet
```
public void addColumnsToGet(String columnName)
```
    Add the column to be read.
    
    参数:
    
    columnName - The name of the column to be returned.
  - addColumnsToGet
```
public void addColumnsToGet(String[] columnNames)
```
    Add the columns to be read.
    
    参数:
    
    columnNames - The names of the columns to be returned.
  - addColumnsToGet
```
public void addColumnsToGet(Collection<String> columnsToGet)
```
    Add the columns to read.
    
    参数:
    
    columnsToGet -
  - clearColumnsToGet
```
public void clearColumnsToGet()
```
    Clear the list of column names that have been set for reading.
  - numColumnsToGet
```
public int numColumnsToGet()
```
    Returns the number of columns to be read.
    
    返回:
    
    The number of columns to be read.
  - setMaxVersions
```
public void setMaxVersions(int maxVersions)
```
    Set MaxVersions.
    
    参数:
    
    maxVersions -
  - getMaxVersions
```
public int getMaxVersions()
```
    Get the set MaxVersions.
    
    返回:
    
    MaxVersions
    
    抛出:
    
    IllegalStateException - if this parameter is not configured
  - hasSetMaxVersions
```
public boolean hasSetMaxVersions()
```
    Query whether MaxVersions is set.
    
    返回:
    
    Returns true if MaxVersions is set, otherwise returns false.
  - setTimeRange
```
public void setTimeRange(TimeRange timeRange)
```
    Set the timestamp range to read.
    
    参数:
    
    timeRange - the timestamp range
  - setTimestamp
```
public void setTimestamp(long timestamp)
```
    Set the specific timestamp to read.
    
    参数:
    
    timestamp - The timestamp
  - getTimeRange
```
public TimeRange getTimeRange()
```
    Get the configured time range.
    
    返回:
    
    TimeRange
    
    抛出:
    
    IllegalStateException - if this parameter is not configured
  - hasSetTimeRange
```
public boolean hasSetTimeRange()
```
    Query whether TimeRange has been set.
    
    返回:
    
    If TimeRange has been set, return true; otherwise, return false.
  - setFilter
```
public void setFilter(Filter filter)
```
    Set the Filter to be used for this query.
    
    参数:
    
    filter -
  - getFilter
```
public Filter getFilter()
```
    Get the Filter used in this query.
    
    返回:
    
    Filter
    
    抛出:
    
    IllegalStateException - if the Filter is not set
  - hasSetFilter
```
public boolean hasSetFilter()
```
    Query whether the Filter is set.
    
    返回:
    
    Returns true if the Filter is set, otherwise returns false.
  - setCacheBlocks
```
public void setCacheBlocks(boolean cacheBlocks)
```
    Set whether the data returned by this read operation should enter the BlockCache.
    
    参数:
    
    cacheBlocks - If true, the data read will be cached in the BlockCache
  - getCacheBlocks
```
public boolean getCacheBlocks()
```
    Get the value of the CacheBlocks setting.
    
    返回:
    
    CacheBlocks
    
    抛出:
    
    IllegalStateException - if this parameter is not configured
  - hasSetCacheBlock
```
public boolean hasSetCacheBlock()
```
    Query whether CacheBlocks is set.
    
    返回:
    
    If CacheBlocks is set, return true; otherwise, return false.
  - getStartColumn
```
public String getStartColumn()
```
  - setStartColumn
```
public void setStartColumn(String startColumn)
```
  - hasSetStartColumn
```
public boolean hasSetStartColumn()
```
  - getEndColumn
```
public String getEndColumn()
```
  - setEndColumn
```
public void setEndColumn(String endColumn)
```
  - hasSetEndColumn
```
public boolean hasSetEndColumn()
```
  - copyTo
```
public void copyTo(RowQueryCriteria target)
```

类 RowQueryCriteria

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

RowQueryCriteria

方法详细资料

setTableName

getTableName

getColumnsToGet

addColumnsToGet

addColumnsToGet

addColumnsToGet

clearColumnsToGet

numColumnsToGet

setMaxVersions

getMaxVersions

hasSetMaxVersions

setTimeRange

setTimestamp

getTimeRange

hasSetTimeRange

setFilter

getFilter

hasSetFilter

setCacheBlocks

getCacheBlocks

hasSetCacheBlock

getStartColumn

setStartColumn

hasSetStartColumn

getEndColumn

setEndColumn

hasSetEndColumn

copyTo