SingleColumnValueCondition (AliCloud TableStore SDK for Java 5.17.6 API)

java.lang.Object
- com.alicloud.openservices.tablestore.model.condition.SingleColumnValueCondition

所有已实现的接口:

ColumnCondition
```
public class SingleColumnValueCondition
extends Object
implements ColumnCondition
```
Single row column value condition, used for the conditional update feature of TableStore. It allows setting conditions based on the size relationship between a column value and a specified value.
Supported comparison relationships include: EQUAL(=), NOT_EQUAL(!=), GREATER_THAN(>), GREATER_EQUAL(>=), LESS_THAN(<), and LESS_EQUAL(<=).

Since the attribute columns in a single row of TableStore are not fixed, there may be cases where the column in the condition does not exist in that row. In such cases, the passIfMissing parameter controls whether the condition passes.
If passIfMissing is set to true, the condition passes if the column does not exist in that row; If passIfMissing is set to false, the condition fails if the column does not exist in that row. The default value is true.
Since TableStore's attribute columns may have multiple versions, there might be cases where one version of the column matches the given value while another does not. In such cases, the latestVersionsOnly parameter controls the filtering result for that row. If latestVersionsOnly is set to true, only the latest version of the value will be compared, with the default value being true. It should be noted that if latestVersionsOnly is set to false, all versions (the latest max_versions) of the column will be compared, and the condition is considered met if any version matches.

嵌套类概要

嵌套类
限定符和类型类和说明

static class SingleColumnValueCondition.CompareOperator

嵌套类
限定符和类型	类和说明
`static class`	`SingleColumnValueCondition.CompareOperator`

构造器概要

构造器
构造器和说明
`SingleColumnValueCondition(String columnName, SingleColumnValueCondition.CompareOperator operator, ColumnValue columnValue)` 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
`String`	`getColumnName()` Get the column name.
`ColumnValue`	`getColumnValue()` Get the comparison value of the column.
`ColumnConditionType`	`getConditionType()`
`SingleColumnValueCondition.CompareOperator`	`getOperator()` Get the comparison operator for the column.
`boolean`	`isLatestVersionsOnly()` Returns the value of the set latestVersionsOnly.
`boolean`	`isPassIfMissing()` Returns the value of passIfMissing that has been set.
`com.aliyun.ots.thirdparty.com.google.protobuf.ByteString`	`serialize()`
`SingleColumnValueCondition`	`setColumnName(String columnName)` Sets the name of the column.
`SingleColumnValueCondition`	`setColumnValue(ColumnValue columnValue)` Sets the comparison value for the column.
`SingleColumnValueCondition`	`setLatestVersionsOnly(boolean latestVersionsOnly)` Set latestVersionsOnly.
`SingleColumnValueCondition`	`setOperator(SingleColumnValueCondition.CompareOperator operator)` Set the column comparison operator.
`SingleColumnValueCondition`	`setPassIfMissing(boolean passIfMissing)` Set passIfMissing.
`SingleColumnValueFilter`	`toFilter()`

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
  - SingleColumnValueCondition
```
public SingleColumnValueCondition(String columnName,
                                  SingleColumnValueCondition.CompareOperator operator,
                                  ColumnValue columnValue)
```
    Constructor.
    
    参数:
    
    columnName - The name of the column
    
    operator - The comparison function
    
    columnValue - The value of the column
- 方法详细资料
  - getOperator
```
public SingleColumnValueCondition.CompareOperator getOperator()
```
    Get the comparison operator for the column.
    
    返回:
    
    The comparison operator.
  - setOperator
```
public SingleColumnValueCondition setOperator(SingleColumnValueCondition.CompareOperator operator)
```
    Set the column comparison operator.
    
    参数:
    
    operator - The comparison operator
    
    返回:
    
    this for chain invocation
  - getColumnName
```
public String getColumnName()
```
    Get the column name.
    
    返回:
    
    The name of the column.
  - setColumnName
```
public SingleColumnValueCondition setColumnName(String columnName)
```
    Sets the name of the column.
    
    参数:
    
    columnName - the name of the column
    
    返回:
    
    this for chain invocation
  - getColumnValue
```
public ColumnValue getColumnValue()
```
    Get the comparison value of the column.
    
    返回:
    
    The comparison value of the column.
  - setColumnValue
```
public SingleColumnValueCondition setColumnValue(ColumnValue columnValue)
```
    Sets the comparison value for the column.
    
    参数:
    
    columnValue - The comparison value for the column.
    
    返回:
    
    this for chain invocation
  - isPassIfMissing
```
public boolean isPassIfMissing()
```
    Returns the value of passIfMissing that has been set.
    
    返回:
    
    The value of passIfMissing.
  - setPassIfMissing
```
public SingleColumnValueCondition setPassIfMissing(boolean passIfMissing)
```
    Set passIfMissing.
    Since the property columns of a TableStore row are not fixed, there may be cases where a column in the condition does not exist in that row. In this case, the passIfMissing parameter controls whether the condition passes.
    
    If passIfMissing is set to true, the condition will pass if the column does not exist in the row;
    
    If passIfMissing is set to false, the condition will fail if the column does not exist in the row.
    
    The default value is true.
    
    参数:
    
    passIfMissing -
    
    返回:
    
    this for chain invocation
  - isLatestVersionsOnly
```
public boolean isLatestVersionsOnly()
```
    Returns the value of the set latestVersionsOnly.
    
    返回:
    
    The value of latestVersionsOnly.
  - setLatestVersionsOnly
```
public SingleColumnValueCondition setLatestVersionsOnly(boolean latestVersionsOnly)
```
    Set latestVersionsOnly.
    Since TableStore property columns may have multiple versions, there might be cases where one version of the column's value matches the given value while another version does not,
    
    in this case, the latestVersionsOnly parameter controls the filtering result for the row.
    
    If latestVersionsOnly is set to true, only the latest version's value will be compared. The default value is true.
    
    It should be noted that if latestVersionsOnly is false, all versions (the latest max_versions) of the column will be compared, and if any version's value matches, the condition is considered satisfied.
    
    参数:
    
    latestVersionsOnly -
    
    返回:
  - getConditionType
```
public ColumnConditionType getConditionType()
```
    指定者:
    
    getConditionType 在接口中 ColumnCondition
  - toFilter
```
public SingleColumnValueFilter toFilter()
```
  - serialize
```
public com.aliyun.ots.thirdparty.com.google.protobuf.ByteString serialize()
```
    指定者:
    
    serialize 在接口中 ColumnCondition

类 SingleColumnValueCondition

嵌套类概要

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

SingleColumnValueCondition

方法详细资料

getOperator

setOperator

getColumnName

setColumnName

getColumnValue

setColumnValue

isPassIfMissing

setPassIfMissing

isLatestVersionsOnly

setLatestVersionsOnly

getConditionType

toFilter

serialize