PropertyValueBuffer (jackson-databind 2.15.0)

java.lang.Object
- com.fasterxml.jackson.databind.deser.impl.PropertyValueBuffer

```
public class PropertyValueBuffer
extends Object
```
Simple container used for temporarily buffering a set of PropertyValues. Using during construction of beans (and Maps) that use Creators, and hence need buffering before instance (that will have properties to assign values to) is constructed.

Field Summary

Fields
Modifier and Type	Field and Description
`protected PropertyValue`	`_buffered` If we get non-creator parameters before or between creator parameters, those need to be buffered.
`protected DeserializationContext`	`_context`
`protected Object[]`	`_creatorParameters` Buffer used for storing creator parameters for constructing instance.
`protected Object`	`_idValue` In case there is an Object Id property to handle, this is the value we have for it.
`protected ObjectIdReader`	`_objectIdReader`
`protected int`	`_paramsNeeded` Number of creator parameters for which we have not yet received values.
`protected int`	`_paramsSeen` Bitflag used to track parameters found from incoming data when number of parameters is less than 32 (fits in int).
`protected BitSet`	`_paramsSeenBig` Bitflag used to track parameters found from incoming data when number of parameters is 32 or higher.
`protected JsonParser`	`_parser`

Constructor Summary

Constructors
Constructor and Description
`PropertyValueBuffer(JsonParser p, DeserializationContext ctxt, int paramCount, ObjectIdReader oir)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected Object`	`_findMissing(SettableBeanProperty prop)`
`boolean`	`assignParameter(SettableBeanProperty prop, Object value)` Method called to buffer value for given property, as well as check whether we now have values for all (creator) properties that we expect to get values for.
`void`	`bufferAnyProperty(SettableAnyProperty prop, String propName, Object value)`
`protected PropertyValue`	`buffered()`
`void`	`bufferMapProperty(Object key, Object value)`
`void`	`bufferProperty(SettableBeanProperty prop, Object value)`
`Object`	`getParameter(SettableBeanProperty prop)` A variation of `getParameters(SettableBeanProperty[])` that accepts a single property.
`Object[]`	`getParameters(SettableBeanProperty[] props)` Method called to do necessary post-processing such as injection of values and verification of values for required properties, after either `assignParameter(SettableBeanProperty, Object)` returns `true` (to indicate all creator properties are found), or when then whole JSON Object has been processed,
`Object`	`handleIdValue(DeserializationContext ctxt, Object bean)` Helper method called to handle Object Id value collected earlier, if any
`boolean`	`hasParameter(SettableBeanProperty prop)` Returns `true` if the given property was seen in the JSON source by this buffer.
`boolean`	`isComplete()`
`boolean`	`readIdProperty(String propName)` Helper method called to see if given non-creator property is the "id property"; and if so, handle appropriately.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - _parser
```
protected final JsonParser _parser
```
  - _context
```
protected final DeserializationContext _context
```
  - _objectIdReader
```
protected final ObjectIdReader _objectIdReader
```
  - _creatorParameters
```
protected final Object[] _creatorParameters
```
    Buffer used for storing creator parameters for constructing instance.
  - _paramsNeeded
```
protected int _paramsNeeded
```
    Number of creator parameters for which we have not yet received values.
  - _paramsSeen
```
protected int _paramsSeen
```
    Bitflag used to track parameters found from incoming data when number of parameters is less than 32 (fits in int).
  - _paramsSeenBig
```
protected final BitSet _paramsSeenBig
```
    Bitflag used to track parameters found from incoming data when number of parameters is 32 or higher.
  - _buffered
```
protected PropertyValue _buffered
```
    If we get non-creator parameters before or between creator parameters, those need to be buffered. Buffer is just a simple linked list
  - _idValue
```
protected Object _idValue
```
    In case there is an Object Id property to handle, this is the value we have for it.
- Constructor Detail
  - PropertyValueBuffer
```
public PropertyValueBuffer(JsonParser p,
                           DeserializationContext ctxt,
                           int paramCount,
                           ObjectIdReader oir)
```
- Method Detail
  - hasParameter
```
public final boolean hasParameter(SettableBeanProperty prop)
```
    Returns true if the given property was seen in the JSON source by this buffer.
    
    Since:
    
    2.8
  - getParameter
```
public Object getParameter(SettableBeanProperty prop)
                    throws JsonMappingException
```
    A variation of getParameters(SettableBeanProperty[]) that accepts a single property. Whereas the plural form eagerly fetches and validates all properties, this method may be used (along with hasParameter(SettableBeanProperty)) to let applications only fetch the properties defined in the JSON source itself, and to have some other customized behavior for missing properties.
    
    Throws:
    
    JsonMappingException
    
    Since:
    
    2.8
  - getParameters
```
public Object[] getParameters(SettableBeanProperty[] props)
                       throws JsonMappingException
```
    Method called to do necessary post-processing such as injection of values and verification of values for required properties, after either assignParameter(SettableBeanProperty, Object) returns true (to indicate all creator properties are found), or when then whole JSON Object has been processed,
    
    Throws:
    
    JsonMappingException
  - _findMissing
```
protected Object _findMissing(SettableBeanProperty prop)
                       throws JsonMappingException
```
    Throws:
    
    JsonMappingException
  - readIdProperty
```
public boolean readIdProperty(String propName)
                       throws IOException
```
    Helper method called to see if given non-creator property is the "id property"; and if so, handle appropriately.
    
    Throws:
    
    IOException
    
    Since:
    
    2.1
  - handleIdValue
```
public Object handleIdValue(DeserializationContext ctxt,
                            Object bean)
                     throws IOException
```
    Helper method called to handle Object Id value collected earlier, if any
    
    Throws:
    
    IOException
  - buffered
```
protected PropertyValue buffered()
```
  - isComplete
```
public boolean isComplete()
```
  - assignParameter
```
public boolean assignParameter(SettableBeanProperty prop,
                               Object value)
```
    Method called to buffer value for given property, as well as check whether we now have values for all (creator) properties that we expect to get values for.
    
    Returns:
    
    True if we have received all creator parameters
    
    Since:
    
    2.6
  - bufferProperty
```
public void bufferProperty(SettableBeanProperty prop,
                           Object value)
```
  - bufferAnyProperty
```
public void bufferAnyProperty(SettableAnyProperty prop,
                              String propName,
                              Object value)
```
  - bufferMapProperty
```
public void bufferMapProperty(Object key,
                              Object value)
```

Class PropertyValueBuffer

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

_parser

_context

_objectIdReader

_creatorParameters

_paramsNeeded

_paramsSeen

_paramsSeenBig

_buffered

_idValue

Constructor Detail

PropertyValueBuffer

Method Detail

hasParameter

getParameter

getParameters

_findMissing

readIdProperty

handleIdValue

buffered

isComplete

assignParameter

bufferProperty

bufferAnyProperty

bufferMapProperty