LiteralValue (Flink : Table : Common 1.12.5 API)

java.lang.Object
- org.apache.flink.table.descriptors.HierarchyDescriptor
- - org.apache.flink.table.descriptors.LiteralValue

所有已实现的接口:

Descriptor
```
@PublicEvolving
public class LiteralValue
extends HierarchyDescriptor
```
Descriptor for a literal value. A literal value consists of a type and the actual value. Expression values are not allowed.
If no type is set, the type is automatically derived from the value. Currently, this is supported for: BOOLEAN, INT, DOUBLE, and VARCHAR.
Examples: - "true", "false" -> BOOLEAN - "42", "-5" -> INT - "2.0", "1234.222" -> DOUBLE - VARCHAR otherwise

构造器概要

构造器
构造器和说明

LiteralValue()

构造器
构造器和说明
`LiteralValue()`

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`	`addPropertiesWithPrefix(String keyPrefix, DescriptorProperties properties)` Internal method for properties conversion.
`LiteralValue`	`of(String typeString)` Type string of the literal value.
`LiteralValue`	`of(org.apache.flink.api.common.typeinfo.TypeInformation<?> typeInfo)` Type information of the literal value.
`Map<String,String>`	`toProperties()` Converts this descriptor into a set of properties.
`LiteralValue`	`value(BigDecimal value)` Literal DECIMAL value.
`LiteralValue`	`value(boolean value)` Literal BOOLEAN value.
`LiteralValue`	`value(byte value)` Literal TINYINT value.
`LiteralValue`	`value(double value)` Literal DOUBLE value.
`LiteralValue`	`value(float value)` Literal FLOAT value.
`LiteralValue`	`value(int value)` Literal INT value.
`LiteralValue`	`value(long value)` Literal BIGINT value.
`LiteralValue`	`value(short value)` Literal SMALLINT value.
`LiteralValue`	`value(String value)` Literal value either for an explicit VARCHAR type or automatically derived type.

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
  - LiteralValue
```
public LiteralValue()
```
- 方法详细资料
  - of
```
public LiteralValue of(org.apache.flink.api.common.typeinfo.TypeInformation<?> typeInfo)
```
    Type information of the literal value. E.g. Types.BOOLEAN.
    
    参数:
    
    typeInfo - type information describing the value
  - of
```
public LiteralValue of(String typeString)
```
    Type string of the literal value. E.g. "BOOLEAN".
    
    参数:
    
    typeString - type string describing the value
  - value
```
public LiteralValue value(boolean value)
```
    Literal BOOLEAN value.
    
    参数:
    
    value - literal BOOLEAN value
  - value
```
public LiteralValue value(int value)
```
    Literal INT value.
    
    参数:
    
    value - literal INT value
  - value
```
public LiteralValue value(double value)
```
    Literal DOUBLE value.
    
    参数:
    
    value - literal DOUBLE value
  - value
```
public LiteralValue value(float value)
```
    Literal FLOAT value.
    
    参数:
    
    value - literal FLOAT value
  - value
```
public LiteralValue value(String value)
```
    Literal value either for an explicit VARCHAR type or automatically derived type.
    If no type is set, the type is automatically derived from the value. Currently, this is supported for: BOOLEAN, INT, DOUBLE, and VARCHAR.
    
    参数:
    
    value - literal value
  - value
```
public LiteralValue value(long value)
```
    Literal BIGINT value.
    
    参数:
    
    value - literal BIGINT value
  - value
```
public LiteralValue value(byte value)
```
    Literal TINYINT value.
    
    参数:
    
    value - literal TINYINT value
  - value
```
public LiteralValue value(short value)
```
    Literal SMALLINT value.
    
    参数:
    
    value - literal SMALLINT value
  - value
```
public LiteralValue value(BigDecimal value)
```
    Literal DECIMAL value.
    
    参数:
    
    value - literal DECIMAL value
  - toProperties
```
public Map<String,String> toProperties()
```
    从接口复制的说明: Descriptor
    
    Converts this descriptor into a set of properties.
  - addPropertiesWithPrefix
```
public void addPropertiesWithPrefix(String keyPrefix,
                                    DescriptorProperties properties)
```
    从类复制的说明: HierarchyDescriptor
    
    Internal method for properties conversion. All the property keys will be prefixed with the given key prefix.
    
    指定者:
    
    addPropertiesWithPrefix 在类中 HierarchyDescriptor

类 LiteralValue

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

LiteralValue

方法详细资料

of

of

value

value

value

value

value

value

value

value

value

toProperties

addPropertiesWithPrefix