java.lang.Object
- org.bson.AbstractBsonReader
- - org.bson.BsonDocumentReader

All Implemented Interfaces:

Closeable, AutoCloseable, BsonReader
```
public class BsonDocumentReader
extends AbstractBsonReader
```
A BsonReader implementation that reads from an instance of BsonDocument. This can be used to decode a BsonDocument using a Decoder.

Since:

3.0

See Also:

BsonDocument, Decoder

Nested Class Summary

Nested Classes
Modifier and Type Class Description

protected class BsonDocumentReader.Context

protected class BsonDocumentReader.Mark
- Nested classes/interfaces inherited from class org.bson.AbstractBsonReader
  AbstractBsonReader.State

Constructor Summary

Constructors
Constructor Description

BsonDocumentReader(BsonDocument document)
Construct a new instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected int`	`doPeekBinarySize()`	Handles the logic to peek at the binary size.
`protected byte`	`doPeekBinarySubType()`	Handles the logic to peek at the binary subtype.
`protected BsonBinary`	`doReadBinaryData()`	Handles the logic to read binary data
`protected boolean`	`doReadBoolean()`	Handles the logic to read booleans
`protected long`	`doReadDateTime()`	Handles the logic to read date time
`protected BsonDbPointer`	`doReadDBPointer()`	Handles the logic to read a DBPointer
`Decimal128`	`doReadDecimal128()`	Handles the logic to read Decimal128
`protected double`	`doReadDouble()`	Handles the logic to read doubles
`protected void`	`doReadEndArray()`	Handles the logic when reading the end of an array
`protected void`	`doReadEndDocument()`	Handles the logic when reading the end of a document
`protected int`	`doReadInt32()`	Handles the logic to read 32 bit ints
`protected long`	`doReadInt64()`	Handles the logic to read 64 bit ints
`protected String`	`doReadJavaScript()`	Handles the logic to read Javascript functions
`protected String`	`doReadJavaScriptWithScope()`	Handles the logic to read scoped Javascript functions
`protected void`	`doReadMaxKey()`	Handles the logic to read a Max key
`protected void`	`doReadMinKey()`	Handles the logic to read a Min key
`protected void`	`doReadNull()`	Handles the logic to read a null value
`protected ObjectId`	`doReadObjectId()`	Handles the logic to read an ObjectId
`protected BsonRegularExpression`	`doReadRegularExpression()`	Handles the logic to read a regular expression
`protected void`	`doReadStartArray()`	Handles the logic to read the start of an array
`protected void`	`doReadStartDocument()`	Handles the logic to read the start of a document
`protected String`	`doReadString()`	Handles the logic to read a String
`protected String`	`doReadSymbol()`	Handles the logic to read a Symbol
`protected BsonTimestamp`	`doReadTimestamp()`	Handles the logic to read a timestamp
`protected void`	`doReadUndefined()`	Handles the logic to read an Undefined value
`protected void`	`doSkipName()`	Handles any logic required to skip the name (reader must be positioned on a name).
`protected void`	`doSkipValue()`	Handles any logic required to skip the value (reader must be positioned on a value).
`protected BsonDocumentReader.Context`	`getContext()`	Get the context, which will indicate which state the reader is in, for example which part of a document it's currently reading.
`BsonReaderMark`	`getMark()`	Gets a mark representing the current state of the reader.
`BsonType`	`readBsonType()`	Reads a BSONType from the reader.

Methods inherited from class org.bson.AbstractBsonReader
checkPreconditions, close, getCurrentBsonType, getCurrentName, getNextState, getState, isClosed, peekBinarySize, peekBinarySubType, readBinaryData, readBinaryData, readBoolean, readBoolean, readDateTime, readDateTime, readDBPointer, readDBPointer, readDecimal128, readDecimal128, readDouble, readDouble, readEndArray, readEndDocument, readInt32, readInt32, readInt64, readInt64, readJavaScript, readJavaScript, readJavaScriptWithScope, readJavaScriptWithScope, readMaxKey, readMaxKey, readMinKey, readMinKey, readName, readName, readNull, readNull, readObjectId, readObjectId, readRegularExpression, readRegularExpression, readStartArray, readStartDocument, readString, readString, readSymbol, readSymbol, readTimestamp, readTimestamp, readUndefined, readUndefined, setContext, setCurrentBsonType, setCurrentName, setState, skipName, skipValue, throwInvalidContextType, throwInvalidState, verifyBSONType, verifyName

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

- Constructor Detail
  - BsonDocumentReader
```
public BsonDocumentReader(BsonDocument document)
```
    Construct a new instance.
    
    Parameters:
    
    document - the document to read from
- Method Detail
  - doReadBinaryData
```
protected BsonBinary doReadBinaryData()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read binary data
    
    Specified by:
    
    doReadBinaryData in class AbstractBsonReader
    
    Returns:
    
    the BsonBinary value
  - doPeekBinarySubType
```
protected byte doPeekBinarySubType()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to peek at the binary subtype.
    
    Specified by:
    
    doPeekBinarySubType in class AbstractBsonReader
    
    Returns:
    
    the binary subtype
  - doPeekBinarySize
```
protected int doPeekBinarySize()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to peek at the binary size.
    
    Specified by:
    
    doPeekBinarySize in class AbstractBsonReader
    
    Returns:
    
    the binary size
  - doReadBoolean
```
protected boolean doReadBoolean()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read booleans
    
    Specified by:
    
    doReadBoolean in class AbstractBsonReader
    
    Returns:
    
    the boolean value
  - doReadDateTime
```
protected long doReadDateTime()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read date time
    
    Specified by:
    
    doReadDateTime in class AbstractBsonReader
    
    Returns:
    
    the long value
  - doReadDouble
```
protected double doReadDouble()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read doubles
    
    Specified by:
    
    doReadDouble in class AbstractBsonReader
    
    Returns:
    
    the double value
  - doReadEndArray
```
protected void doReadEndArray()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic when reading the end of an array
    
    Specified by:
    
    doReadEndArray in class AbstractBsonReader
  - doReadEndDocument
```
protected void doReadEndDocument()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic when reading the end of a document
    
    Specified by:
    
    doReadEndDocument in class AbstractBsonReader
  - doReadInt32
```
protected int doReadInt32()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read 32 bit ints
    
    Specified by:
    
    doReadInt32 in class AbstractBsonReader
    
    Returns:
    
    the int value
  - doReadInt64
```
protected long doReadInt64()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read 64 bit ints
    
    Specified by:
    
    doReadInt64 in class AbstractBsonReader
    
    Returns:
    
    the long value
  - doReadDecimal128
```
public Decimal128 doReadDecimal128()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read Decimal128
    
    Specified by:
    
    doReadDecimal128 in class AbstractBsonReader
    
    Returns:
    
    the Decimal128 value
  - doReadJavaScript
```
protected String doReadJavaScript()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read Javascript functions
    
    Specified by:
    
    doReadJavaScript in class AbstractBsonReader
    
    Returns:
    
    the String value
  - doReadJavaScriptWithScope
```
protected String doReadJavaScriptWithScope()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read scoped Javascript functions
    
    Specified by:
    
    doReadJavaScriptWithScope in class AbstractBsonReader
    
    Returns:
    
    the String value
  - doReadMaxKey
```
protected void doReadMaxKey()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read a Max key
    
    Specified by:
    
    doReadMaxKey in class AbstractBsonReader
  - doReadMinKey
```
protected void doReadMinKey()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read a Min key
    
    Specified by:
    
    doReadMinKey in class AbstractBsonReader
  - doReadNull
```
protected void doReadNull()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read a null value
    
    Specified by:
    
    doReadNull in class AbstractBsonReader
  - doReadObjectId
```
protected ObjectId doReadObjectId()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read an ObjectId
    
    Specified by:
    
    doReadObjectId in class AbstractBsonReader
    
    Returns:
    
    the ObjectId value
  - doReadRegularExpression
```
protected BsonRegularExpression doReadRegularExpression()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read a regular expression
    
    Specified by:
    
    doReadRegularExpression in class AbstractBsonReader
    
    Returns:
    
    the BsonRegularExpression value
  - doReadDBPointer
```
protected BsonDbPointer doReadDBPointer()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read a DBPointer
    
    Specified by:
    
    doReadDBPointer in class AbstractBsonReader
    
    Returns:
    
    the BsonDbPointer value
  - doReadStartArray
```
protected void doReadStartArray()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read the start of an array
    
    Specified by:
    
    doReadStartArray in class AbstractBsonReader
  - doReadStartDocument
```
protected void doReadStartDocument()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read the start of a document
    
    Specified by:
    
    doReadStartDocument in class AbstractBsonReader
  - doReadString
```
protected String doReadString()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read a String
    
    Specified by:
    
    doReadString in class AbstractBsonReader
    
    Returns:
    
    the String value
  - doReadSymbol
```
protected String doReadSymbol()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read a Symbol
    
    Specified by:
    
    doReadSymbol in class AbstractBsonReader
    
    Returns:
    
    the String value
  - doReadTimestamp
```
protected BsonTimestamp doReadTimestamp()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read a timestamp
    
    Specified by:
    
    doReadTimestamp in class AbstractBsonReader
    
    Returns:
    
    the BsonTimestamp value
  - doReadUndefined
```
protected void doReadUndefined()
```
    Description copied from class: AbstractBsonReader
    
    Handles the logic to read an Undefined value
    
    Specified by:
    
    doReadUndefined in class AbstractBsonReader
  - doSkipName
```
protected void doSkipName()
```
    Description copied from class: AbstractBsonReader
    
    Handles any logic required to skip the name (reader must be positioned on a name).
    
    Specified by:
    
    doSkipName in class AbstractBsonReader
  - doSkipValue
```
protected void doSkipValue()
```
    Description copied from class: AbstractBsonReader
    
    Handles any logic required to skip the value (reader must be positioned on a value).
    
    Specified by:
    
    doSkipValue in class AbstractBsonReader
  - readBsonType
```
public BsonType readBsonType()
```
    Description copied from interface: BsonReader
    
    Reads a BSONType from the reader.
    
    Specified by:
    
    readBsonType in interface BsonReader
    
    Specified by:
    
    readBsonType in class AbstractBsonReader
    
    Returns:
    
    A BSONType.
  - getMark
```
public BsonReaderMark getMark()
```
    Description copied from interface: BsonReader
    
    Gets a mark representing the current state of the reader.
    
    Returns:
    
    the mark
  - getContext
```
protected BsonDocumentReader.Context getContext()
```
    Description copied from class: AbstractBsonReader
    
    Get the context, which will indicate which state the reader is in, for example which part of a document it's currently reading.
    
    Overrides:
    
    getContext in class AbstractBsonReader
    
    Returns:
    
    the context

Modifier and Type	Class	Description
`protected class`	`BsonDocumentReader.Context`
`protected class`	`BsonDocumentReader.Mark`

Class BsonDocumentReader

Nested Class Summary

Nested classes/interfaces inherited from class org.bson.AbstractBsonReader

Constructor Summary

Method Summary

Methods inherited from class org.bson.AbstractBsonReader

Methods inherited from class java.lang.Object

Constructor Detail

BsonDocumentReader

Method Detail

doReadBinaryData

doPeekBinarySubType

doPeekBinarySize

doReadBoolean

doReadDateTime

doReadDouble

doReadEndArray

doReadEndDocument

doReadInt32

doReadInt64

doReadDecimal128

doReadJavaScript

doReadJavaScriptWithScope

doReadMaxKey

doReadMinKey

doReadNull

doReadObjectId

doReadRegularExpression

doReadDBPointer

doReadStartArray

doReadStartDocument

doReadString

doReadSymbol

doReadTimestamp

doReadUndefined

doSkipName

doSkipValue

readBsonType

getMark

getContext