JsonElement (com.sequoiadb:sequoiadb-driver 1.12 API)

java.lang.Object
- com.google.gson.JsonElement

直接已知子类:

JsonArray, JsonNull, JsonObject, JsonPrimitive
```
public abstract class JsonElement
extends Object
```
A class representing an element of Json. It could either be a JsonObject, a JsonArray, a JsonPrimitive or a JsonNull.

作者:

Inderjeet Singh, Joel Leitch

构造器概要

构造器
构造器和说明

JsonElement()

构造器
构造器和说明
`JsonElement()`

方法概要

方法
限定符和类型	方法和说明
`abstract JsonElement`	`deepCopy()` Returns a deep copy of this element.
`BigDecimal`	`getAsBigDecimal()` convenience method to get this element as a `BigDecimal`.
`BigInteger`	`getAsBigInteger()` convenience method to get this element as a `BigInteger`.
`boolean`	`getAsBoolean()` convenience method to get this element as a boolean value.
`byte`	`getAsByte()` convenience method to get this element as a primitive byte value.
`char`	`getAsCharacter()` convenience method to get this element as a primitive character value.
`double`	`getAsDouble()` convenience method to get this element as a primitive double value.
`float`	`getAsFloat()` convenience method to get this element as a primitive float value.
`int`	`getAsInt()` convenience method to get this element as a primitive integer value.
`JsonArray`	`getAsJsonArray()` convenience method to get this element as a `JsonArray`.
`JsonNull`	`getAsJsonNull()` convenience method to get this element as a `JsonNull`.
`JsonObject`	`getAsJsonObject()` convenience method to get this element as a `JsonObject`.
`JsonPrimitive`	`getAsJsonPrimitive()` convenience method to get this element as a `JsonPrimitive`.
`long`	`getAsLong()` convenience method to get this element as a primitive long value.
`Number`	`getAsNumber()` convenience method to get this element as a `Number`.
`short`	`getAsShort()` convenience method to get this element as a primitive short value.
`String`	`getAsString()` convenience method to get this element as a string value.
`boolean`	`isJsonArray()` provides check for verifying if this element is an array or not.
`boolean`	`isJsonNull()` provides check for verifying if this element represents a null value or not.
`boolean`	`isJsonObject()` provides check for verifying if this element is a Json object or not.
`boolean`	`isJsonPrimitive()` provides check for verifying if this element is a primitive or not.
`String`	`toString()` Returns a String representation of this element.

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

- 构造器详细资料
  - JsonElement
```
public JsonElement()
```
- 方法详细资料
  - deepCopy
```
public abstract JsonElement deepCopy()
```
    Returns a deep copy of this element. Immutable elements like primitives and nulls are not copied.
  - isJsonArray
```
public boolean isJsonArray()
```
    provides check for verifying if this element is an array or not.
    
    返回:
    true if this element is of type JsonArray, false otherwise.
  - isJsonObject
```
public boolean isJsonObject()
```
    provides check for verifying if this element is a Json object or not.
    
    返回:
    true if this element is of type JsonObject, false otherwise.
  - isJsonPrimitive
```
public boolean isJsonPrimitive()
```
    provides check for verifying if this element is a primitive or not.
    
    返回:
    true if this element is of type JsonPrimitive, false otherwise.
  - isJsonNull
```
public boolean isJsonNull()
```
    provides check for verifying if this element represents a null value or not.
    
    返回:
    true if this element is of type JsonNull, false otherwise.
    从以下版本开始:
    
    1.2
  - getAsJsonObject
```
public JsonObject getAsJsonObject()
```
    convenience method to get this element as a JsonObject. If the element is of some other type, a ClassCastException will result. Hence it is best to use this method after ensuring that this element is of the desired type by calling isJsonObject() first.
    
    返回:
    get this element as a JsonObject.
    
    抛出:
    
    IllegalStateException - if the element is of another type.
  - getAsJsonArray
```
public JsonArray getAsJsonArray()
```
    convenience method to get this element as a JsonArray. If the element is of some other type, a ClassCastException will result. Hence it is best to use this method after ensuring that this element is of the desired type by calling isJsonArray() first.
    
    返回:
    get this element as a JsonArray.
    
    抛出:
    
    IllegalStateException - if the element is of another type.
  - getAsJsonPrimitive
```
public JsonPrimitive getAsJsonPrimitive()
```
    convenience method to get this element as a JsonPrimitive. If the element is of some other type, a ClassCastException will result. Hence it is best to use this method after ensuring that this element is of the desired type by calling isJsonPrimitive() first.
    
    返回:
    get this element as a JsonPrimitive.
    
    抛出:
    
    IllegalStateException - if the element is of another type.
  - getAsJsonNull
```
public JsonNull getAsJsonNull()
```
    convenience method to get this element as a JsonNull. If the element is of some other type, a ClassCastException will result. Hence it is best to use this method after ensuring that this element is of the desired type by calling isJsonNull() first.
    
    返回:
    get this element as a JsonNull.
    
    抛出:
    
    IllegalStateException - if the element is of another type.
    从以下版本开始:
    
    1.2
  - getAsBoolean
```
public boolean getAsBoolean()
```
    convenience method to get this element as a boolean value.
    
    返回:
    get this element as a primitive boolean value.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive and is not a valid boolean value.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
  - getAsNumber
```
public Number getAsNumber()
```
    convenience method to get this element as a Number.
    
    返回:
    get this element as a Number.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive and is not a valid number.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
  - getAsString
```
public String getAsString()
```
    convenience method to get this element as a string value.
    
    返回:
    get this element as a string value.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive and is not a valid string value.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
  - getAsDouble
```
public double getAsDouble()
```
    convenience method to get this element as a primitive double value.
    
    返回:
    get this element as a primitive double value.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive and is not a valid double value.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
  - getAsFloat
```
public float getAsFloat()
```
    convenience method to get this element as a primitive float value.
    
    返回:
    get this element as a primitive float value.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive and is not a valid float value.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
  - getAsLong
```
public long getAsLong()
```
    convenience method to get this element as a primitive long value.
    
    返回:
    get this element as a primitive long value.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive and is not a valid long value.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
  - getAsInt
```
public int getAsInt()
```
    convenience method to get this element as a primitive integer value.
    
    返回:
    get this element as a primitive integer value.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive and is not a valid integer value.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
  - getAsByte
```
public byte getAsByte()
```
    convenience method to get this element as a primitive byte value.
    
    返回:
    get this element as a primitive byte value.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive and is not a valid byte value.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
    从以下版本开始:
    
    1.3
  - getAsCharacter
```
public char getAsCharacter()
```
    convenience method to get this element as a primitive character value.
    
    返回:
    get this element as a primitive char value.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive and is not a valid char value.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
    从以下版本开始:
    
    1.3
  - getAsBigDecimal
```
public BigDecimal getAsBigDecimal()
```
    convenience method to get this element as a BigDecimal.
    
    返回:
    get this element as a BigDecimal.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive. * @throws NumberFormatException if the element is not a valid BigDecimal.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
    从以下版本开始:
    
    1.2
  - getAsBigInteger
```
public BigInteger getAsBigInteger()
```
    convenience method to get this element as a BigInteger.
    
    返回:
    get this element as a BigInteger.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive.
    
    NumberFormatException - if the element is not a valid BigInteger.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
    从以下版本开始:
    
    1.2
  - getAsShort
```
public short getAsShort()
```
    convenience method to get this element as a primitive short value.
    
    返回:
    get this element as a primitive short value.
    
    抛出:
    
    ClassCastException - if the element is of not a JsonPrimitive and is not a valid short value.
    
    IllegalStateException - if the element is of the type JsonArray but contains more than a single element.
  - toString
```
public String toString()
```
    Returns a String representation of this element.
    
    覆盖:
    
    toString 在类中 Object

类 JsonElement

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

JsonElement

方法详细资料

deepCopy

isJsonArray

isJsonObject

isJsonPrimitive

isJsonNull

getAsJsonObject

getAsJsonArray

getAsJsonPrimitive

getAsJsonNull

getAsBoolean

getAsNumber

getAsString

getAsDouble

getAsFloat

getAsLong

getAsInt

getAsByte

getAsCharacter

getAsBigDecimal

getAsBigInteger

getAsShort

toString