org.codehaus.jackson

类 JsonStreamContext

java.lang.Object

org.codehaus.jackson.JsonStreamContext

直接已知子类:

JsonReadContext, JsonWriteContext

public abstract class JsonStreamContext
extends Object

Shared base class for streaming processing contexts used during reading and writing of Json content using Streaming API. This context is also exposed to applications: context object can be used by applications to get an idea of relative position of the parser/generator within json content being processed. This allows for some contextual processing: for example, output within Array context can differ from that of Object context.

字段概要

字段

限定符和类型	字段和说明
protected int	_index Index of the currently processed entry.
protected int	_type
protected static int	TYPE_ARRAY
protected static int	TYPE_OBJECT
protected static int	TYPE_ROOT

构造器概要

构造器

限定符	构造器和说明
protected	JsonStreamContext()

方法概要

方法

限定符和类型	方法和说明
int	getCurrentIndex()
abstract String	getCurrentName() Method for accessing name associated with the current location.
int	getEntryCount()
abstract JsonStreamContext	getParent() Accessor for finding parent context of this context; will return null for root context.
String	getTypeDesc() Method for accessing simple type description of current context; either ROOT (for root-level values), OBJECT (for field names and values of JSON Objects) or ARRAY (for values of JSON Arrays)
boolean	inArray() Method that returns true if this context is an Array context; that is, content is being read from or written to a Json Array.
boolean	inObject() Method that returns true if this context is an Object context; that is, content is being read from or written to a Json Object.
boolean	inRoot() Method that returns true if this context is a Root context; that is, content is being read from or written to without enclosing array or object structure.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

TYPE_ROOT

protected static final int TYPE_ROOT

另请参阅:

常量字段值

TYPE_ARRAY

protected static final int TYPE_ARRAY

另请参阅:

常量字段值

TYPE_OBJECT

protected static final int TYPE_OBJECT

另请参阅:

常量字段值

_type

protected int _type

_index

protected int _index

Index of the currently processed entry. Starts with -1 to signal that no entries have been started, and gets advanced each time a new entry is started, either by encountering an expected separator, or with new values if no separators are expected (the case for root context).

构造器详细资料

JsonStreamContext

protected JsonStreamContext()

方法详细资料

getParent

public abstract JsonStreamContext getParent()

Accessor for finding parent context of this context; will return null for root context.

inArray

public final boolean inArray()

Method that returns true if this context is an Array context; that is, content is being read from or written to a Json Array.

inRoot

public final boolean inRoot()

Method that returns true if this context is a Root context; that is, content is being read from or written to without enclosing array or object structure.

inObject

public final boolean inObject()

Method that returns true if this context is an Object context; that is, content is being read from or written to a Json Object.

getTypeDesc

public final String getTypeDesc()

Method for accessing simple type description of current context; either ROOT (for root-level values), OBJECT (for field names and values of JSON Objects) or ARRAY (for values of JSON Arrays)

getEntryCount

public final int getEntryCount()

返回:

Number of entries that are complete and started.

getCurrentIndex

public final int getCurrentIndex()

返回:

Index of the currently processed entry, if any

getCurrentName

public abstract String getCurrentName()

Method for accessing name associated with the current location. Non-null for FIELD_NAME and value events that directly follow field names; null for root level and array values.