EngineDataType

java.lang.Object
- java.lang.Enum<EngineDataType>
- - com.graphdbapi.engine.EngineDataType

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<EngineDataType>
```
public enum EngineDataType
extends java.lang.Enum<EngineDataType>
```
图引擎支持的点边属性类型。

Since:

3.4.4

Enum Constant Summary

Enum Constants
Enum Constant and Description
`BOOLEAN` 布尔属性。默认值：false。取值范围：false或true。
`BYTE` 字节属性。默认值: `Byte.MAX_VALUE`。最小值: `Byte.MIN_VALUE`。最大值: `Byte.MAX_VALUE`。
`DOUBLE` 双精度属性。默认值：`Double.MAX_VALUE`。最小值：`Double.MIN_VALUE`。最大值：`Double.MAX_VALUE`。
`INT` 整型属性。默认值：`Integer.MAX_VALUE`。最小值：`Integer.MIN_VALUE`。最大值：`Integer.MAX_VALUE`。
`LONG` 长整型属性.
`STRING` 字符串属性，仅支持主键属性。默认值：null。取值范围：`length <= 30000`。
`STRING_TO_LONG` 字符串属性转成长整型属性进行存储，需要对应的属性值为长整型。默认值: `Long.MAX_VALUE`。最小值: `Long.MIN_VALUE`。最大值: `Long.MAX_VALUE`。
`STRING_TO_REF` 字符串属性独立下标存储，类似于 String[]。默认值: null。取值范围: `length <= 30000`。
`UNKNOWN` 暂不支持属性。

Field Summary

Fields
Modifier and Type	Field and Description
`static boolean`	`BOOLEAN_NULL_VALUE`
`static byte`	`BYTE_NULL_VALUE`
`static double`	`DOUBLE_NULL_VALUE`
`static int`	`INT_NULL_VALUE`
`static long`	`LONG_NULL_VALUE`
`static java.lang.Object`	`REF_NULL_VALUE`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static EngineDataType`	`convert(java.lang.String json)`
`boolean`	`isDecimal()`
`boolean`	`isInteger()`
`boolean`	`isNumber()`
`static EngineDataType`	`valueOf(java.lang.String name)` Returns the enum constant of this type with the specified name.
`static EngineDataType[]`	`values()` Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - UNKNOWN
```
public static final EngineDataType UNKNOWN
```
    暂不支持属性。
    
    Since:
    
    3.4.4
  - BOOLEAN
```
public static final EngineDataType BOOLEAN
```
    布尔属性。默认值：false。取值范围：false或true。
    
    Since:
    
    3.4.4
  - INT
```
public static final EngineDataType INT
```
    整型属性。默认值：Integer.MAX_VALUE。最小值：Integer.MIN_VALUE。最大值：Integer.MAX_VALUE。
    
    Since:
    
    3.4.4
  - LONG
```
public static final EngineDataType LONG
```
    长整型属性. 默认值：Long.MAX_VALUE。最小值：Long.MIN_VALUE。最大值：Long.MAX_VALUE。
    
    Since:
    
    3.4.4
  - DOUBLE
```
public static final EngineDataType DOUBLE
```
    双精度属性。默认值：Double.MAX_VALUE。最小值：Double.MIN_VALUE。最大值：Double.MAX_VALUE。
    
    Since:
    
    3.4.4
  - STRING
```
public static final EngineDataType STRING
```
    字符串属性，仅支持主键属性。默认值：null。取值范围：length <= 30000。
    
    Since:
    
    3.4.4
  - STRING_TO_LONG
```
public static final EngineDataType STRING_TO_LONG
```
    字符串属性转成长整型属性进行存储，需要对应的属性值为长整型。默认值: Long.MAX_VALUE。最小值: Long.MIN_VALUE。最大值: Long.MAX_VALUE。
    
    Since:
    
    3.4.4
  - STRING_TO_REF
```
public static final EngineDataType STRING_TO_REF
```
    字符串属性独立下标存储，类似于 String[]。默认值: null。取值范围: length <= 30000。
    
    Since:
    
    3.4.4
  - BYTE
```
public static final EngineDataType BYTE
```
    字节属性。默认值: Byte.MAX_VALUE。最小值: Byte.MIN_VALUE。最大值: Byte.MAX_VALUE。
    
    Since:
    
    3.4.4
- Field Detail
  - BOOLEAN_NULL_VALUE
```
public static final boolean BOOLEAN_NULL_VALUE
```
    See Also:
    
    Constant Field Values
  - INT_NULL_VALUE
```
public static final int INT_NULL_VALUE
```
    See Also:
    
    Constant Field Values
  - LONG_NULL_VALUE
```
public static final long LONG_NULL_VALUE
```
    See Also:
    
    Constant Field Values
  - DOUBLE_NULL_VALUE
```
public static final double DOUBLE_NULL_VALUE
```
    See Also:
    
    Constant Field Values
  - REF_NULL_VALUE
```
public static final java.lang.Object REF_NULL_VALUE
```
  - BYTE_NULL_VALUE
```
public static final byte BYTE_NULL_VALUE
```
    See Also:
    
    Constant Field Values
- Method Detail
  - values
```
public static EngineDataType[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
```
for (EngineDataType c : EngineDataType.values())
    System.out.println(c);
```
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static EngineDataType valueOf(java.lang.String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
    
    java.lang.NullPointerException - if the argument is null
  - isInteger
```
public boolean isInteger()
```
  - isDecimal
```
public boolean isDecimal()
```
  - isNumber
```
public boolean isNumber()
```
  - convert
```
public static EngineDataType convert(java.lang.String json)
```

Enum EngineDataType

Enum Constant Summary

Field Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

UNKNOWN

BOOLEAN

INT

LONG

DOUBLE

STRING

STRING_TO_LONG

STRING_TO_REF

BYTE

Field Detail

BOOLEAN_NULL_VALUE

INT_NULL_VALUE

LONG_NULL_VALUE

DOUBLE_NULL_VALUE

REF_NULL_VALUE

BYTE_NULL_VALUE

Method Detail

values

valueOf

isInteger

isDecimal

isNumber

convert