AbstractBsonReader

java.lang.Object
- org.bson.AbstractBsonReader

All Implemented Interfaces:

Closeable, AutoCloseable, BsonReader

Direct Known Subclasses:

BsonBinaryReader, BsonDocumentReader, JsonReader
```
public abstract class AbstractBsonReader
extends Object
implements Closeable, BsonReader
```
Abstract base class for BsonReader implementations.

Since:

3.0

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`protected class`	`AbstractBsonReader.Context` The context for the reader.
`protected class`	`AbstractBsonReader.Mark`
`static class`	`AbstractBsonReader.State` The state of a reader.

Constructor Summary

Constructors
Modifier Constructor and Description

protected AbstractBsonReader()
Initializes a new instance of the BsonReader class.

Constructors
Modifier	Constructor and Description
`protected`	`AbstractBsonReader()` Initializes a new instance of the BsonReader class.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`protected void`	`checkPreconditions(String methodName, BsonType type)` Ensures any conditions are met before reading commences.
`void`	`close()` Closes the reader.
`protected abstract byte`	`doPeekBinarySubType()` Handles the logic to peek at the binary subtype.
`protected abstract BsonBinary`	`doReadBinaryData()` Handles the logic to read binary data
`protected abstract boolean`	`doReadBoolean()` Handles the logic to read booleans
`protected abstract long`	`doReadDateTime()` Handles the logic to read date time
`protected abstract BsonDbPointer`	`doReadDBPointer()` Handles the logic to read a DBPointer
`protected abstract Decimal128`	`doReadDecimal128()` Handles the logic to read Decimal128
`protected abstract double`	`doReadDouble()` Handles the logic to read doubles
`protected abstract void`	`doReadEndArray()` Handles the logic when reading the end of an array
`protected abstract void`	`doReadEndDocument()` Handles the logic when reading the end of a document
`protected abstract int`	`doReadInt32()` Handles the logic to read 32 bit ints
`protected abstract long`	`doReadInt64()` Handles the logic to read 64 bit ints
`protected abstract String`	`doReadJavaScript()` Handles the logic to read Javascript functions
`protected abstract String`	`doReadJavaScriptWithScope()` Handles the logic to read scoped Javascript functions
`protected abstract void`	`doReadMaxKey()` Handles the logic to read a Max key
`protected abstract void`	`doReadMinKey()` Handles the logic to read a Min key
`protected abstract void`	`doReadNull()` Handles the logic to read a null value
`protected abstract ObjectId`	`doReadObjectId()` Handles the logic to read an ObjectId
`protected abstract BsonRegularExpression`	`doReadRegularExpression()` Handles the logic to read a regular expression
`protected abstract void`	`doReadStartArray()` Handles the logic to read the start of an array
`protected abstract void`	`doReadStartDocument()` Handles the logic to read the start of a document
`protected abstract String`	`doReadString()` Handles the logic to read a String
`protected abstract String`	`doReadSymbol()` Handles the logic to read a Symbol
`protected abstract BsonTimestamp`	`doReadTimestamp()` Handles the logic to read a timestamp
`protected abstract void`	`doReadUndefined()` Handles the logic to read an Undefined value
`protected abstract void`	`doSkipName()` Handles any logic required to skip the name (reader must be positioned on a name).
`protected abstract void`	`doSkipValue()` Handles any logic required to skip the value (reader must be positioned on a value).
`protected AbstractBsonReader.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.
`BsonType`	`getCurrentBsonType()`
`String`	`getCurrentName()` Gets the most recently read name.
`protected AbstractBsonReader.State`	`getNextState()` Returns the next `State` to transition to, based on the `AbstractBsonReader.Context` of this reader.
`AbstractBsonReader.State`	`getState()`
`protected boolean`	`isClosed()` Return true if the reader has been closed.
`byte`	`peekBinarySubType()` Peeks the subtype of the binary data that the reader is positioned at.
`BsonBinary`	`readBinaryData()` Reads BSON Binary data from the reader.
`BsonBinary`	`readBinaryData(String name)` Reads a BSON Binary data element from the reader.
`boolean`	`readBoolean()` Reads a BSON Boolean from the reader.
`boolean`	`readBoolean(String name)` Reads a BSON Boolean element from the reader.
`abstract BsonType`	`readBsonType()` Reads a BSONType from the reader.
`long`	`readDateTime()` Reads a BSON DateTime from the reader.
`long`	`readDateTime(String name)` Reads a BSON DateTime element from the reader.
`BsonDbPointer`	`readDBPointer()` Reads a BSON DBPointer from the reader.
`BsonDbPointer`	`readDBPointer(String name)` Reads a BSON DBPointer element from the reader.
`Decimal128`	`readDecimal128()` Reads a BSON Decimal128 from the reader.
`Decimal128`	`readDecimal128(String name)` Reads a BSON Decimal128 element from the reader.
`double`	`readDouble()` Reads a BSON Double from the reader.
`double`	`readDouble(String name)` Reads a BSON Double element from the reader.
`void`	`readEndArray()` Reads the end of a BSON array from the reader.
`void`	`readEndDocument()` Reads the end of a BSON document from the reader.
`int`	`readInt32()` Reads a BSON Int32 from the reader.
`int`	`readInt32(String name)` Reads a BSON Int32 element from the reader.
`long`	`readInt64()` Reads a BSON Int64 from the reader.
`long`	`readInt64(String name)` Reads a BSON Int64 element from the reader.
`String`	`readJavaScript()` Reads a BSON JavaScript from the reader.
`String`	`readJavaScript(String name)` Reads a BSON JavaScript element from the reader.
`String`	`readJavaScriptWithScope()` Reads a BSON JavaScript with scope from the reader (call readStartDocument next to read the scope).
`String`	`readJavaScriptWithScope(String name)` Reads a BSON JavaScript with scope element from the reader (call readStartDocument next to read the scope).
`void`	`readMaxKey()` Reads a BSON MaxKey from the reader.
`void`	`readMaxKey(String name)` Reads a BSON MaxKey element from the reader.
`void`	`readMinKey()` Reads a BSON MinKey from the reader.
`void`	`readMinKey(String name)` Reads a BSON MinKey element from the reader.
`String`	`readName()` Reads the name of an element from the reader.
`void`	`readName(String name)` Reads the name of an element from the reader.
`void`	`readNull()` Reads a BSON null from the reader.
`void`	`readNull(String name)` Reads a BSON null element from the reader.
`ObjectId`	`readObjectId()` Reads a BSON ObjectId from the reader.
`ObjectId`	`readObjectId(String name)` Reads a BSON ObjectId element from the reader.
`BsonRegularExpression`	`readRegularExpression()` Reads a BSON regular expression from the reader.
`BsonRegularExpression`	`readRegularExpression(String name)` Reads a BSON regular expression element from the reader.
`void`	`readStartArray()` Reads the start of a BSON array.
`void`	`readStartDocument()` Reads the start of a BSON document.
`String`	`readString()` Reads a BSON String from the reader.
`String`	`readString(String name)` Reads a BSON string element from the reader.
`String`	`readSymbol()` Reads a BSON symbol from the reader.
`String`	`readSymbol(String name)` Reads a BSON symbol element from the reader.
`BsonTimestamp`	`readTimestamp()` Reads a BSON timestamp from the reader.
`BsonTimestamp`	`readTimestamp(String name)` Reads a BSON timestamp element from the reader.
`void`	`readUndefined()` Reads a BSON undefined from the reader.
`void`	`readUndefined(String name)` Reads a BSON undefined element from the reader.
`protected void`	`setContext(AbstractBsonReader.Context context)` Set the context, which will indicate which state the reader is in, for example which part of a document it's currently reading.
`protected void`	`setCurrentBsonType(BsonType newType)` Sets the type of the current value being read.
`protected void`	`setCurrentName(String newName)` Sets the field name for the key/value pair being read.
`protected void`	`setState(AbstractBsonReader.State newState)` Sets the new current state of this reader.
`void`	`skipName()` Skips the name (reader must be positioned on a name).
`void`	`skipValue()` Skips the value (reader must be positioned on a value).
`protected void`	`throwInvalidContextType(String methodName, BsonContextType actualContextType, BsonContextType... validContextTypes)` Throws an InvalidOperationException when the method called is not valid for the current ContextType.
`protected void`	`throwInvalidState(String methodName, AbstractBsonReader.State... validStates)` Throws an InvalidOperationException when the method called is not valid for the current state.
`protected void`	`verifyBSONType(String methodName, BsonType requiredBsonType)` Verifies the current state and BSONType of the reader.
`protected void`	`verifyName(String expectedName)` Verifies the name of the current element.

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

Methods inherited from interface org.bson.BsonReader
mark, reset

- Constructor Detail
  - AbstractBsonReader
```
protected AbstractBsonReader()
```
    Initializes a new instance of the BsonReader class.
- Method Detail
  - getCurrentBsonType
```
public BsonType getCurrentBsonType()
```
    Specified by:
    
    getCurrentBsonType in interface BsonReader
    
    Returns:
    
    The current BsonType.
  - getCurrentName
```
public String getCurrentName()
```
    Description copied from interface: BsonReader
    
    Gets the most recently read name.
    
    Specified by:
    
    getCurrentName in interface BsonReader
    
    Returns:
    
    the most recently read name
  - setCurrentBsonType
```
protected void setCurrentBsonType(BsonType newType)
```
    Sets the type of the current value being read.
    
    Parameters:
    
    newType - the BSON Type.
  - getState
```
public AbstractBsonReader.State getState()
```
    Returns:
    
    The current state of the reader.
  - setState
```
protected void setState(AbstractBsonReader.State newState)
```
    Sets the new current state of this reader.
    
    Parameters:
    
    newState - the state to set this reader to.
  - setCurrentName
```
protected void setCurrentName(String newName)
```
    Sets the field name for the key/value pair being read.
    
    Parameters:
    
    newName - the field name
  - close
```
public void close()
```
    Closes the reader.
    
    Specified by:
    
    close in interface Closeable
    
    Specified by:
    
    close in interface AutoCloseable
  - isClosed
```
protected boolean isClosed()
```
    Return true if the reader has been closed.
    
    Returns:
    
    true if closed
  - doReadBinaryData
```
protected abstract BsonBinary doReadBinaryData()
```
    Handles the logic to read binary data
    
    Returns:
    
    the BsonBinary value
  - doPeekBinarySubType
```
protected abstract byte doPeekBinarySubType()
```
    Handles the logic to peek at the binary subtype.
    
    Returns:
    
    the binary subtype
  - doReadBoolean
```
protected abstract boolean doReadBoolean()
```
    Handles the logic to read booleans
    
    Returns:
    
    the boolean value
  - doReadDateTime
```
protected abstract long doReadDateTime()
```
    Handles the logic to read date time
    
    Returns:
    
    the long value
  - doReadDouble
```
protected abstract double doReadDouble()
```
    Handles the logic to read doubles
    
    Returns:
    
    the double value
  - doReadEndArray
```
protected abstract void doReadEndArray()
```
    Handles the logic when reading the end of an array
  - doReadEndDocument
```
protected abstract void doReadEndDocument()
```
    Handles the logic when reading the end of a document
  - doReadInt32
```
protected abstract int doReadInt32()
```
    Handles the logic to read 32 bit ints
    
    Returns:
    
    the int value
  - doReadInt64
```
protected abstract long doReadInt64()
```
    Handles the logic to read 64 bit ints
    
    Returns:
    
    the long value
  - doReadDecimal128
```
protected abstract Decimal128 doReadDecimal128()
```
    Handles the logic to read Decimal128
    
    Returns:
    
    the Decimal128 value
    
    Since:
    
    3.4
  - doReadJavaScript
```
protected abstract String doReadJavaScript()
```
    Handles the logic to read Javascript functions
    
    Returns:
    
    the String value
  - doReadJavaScriptWithScope
```
protected abstract String doReadJavaScriptWithScope()
```
    Handles the logic to read scoped Javascript functions
    
    Returns:
    
    the String value
  - doReadMaxKey
```
protected abstract void doReadMaxKey()
```
    Handles the logic to read a Max key
  - doReadMinKey
```
protected abstract void doReadMinKey()
```
    Handles the logic to read a Min key
  - doReadNull
```
protected abstract void doReadNull()
```
    Handles the logic to read a null value
  - doReadObjectId
```
protected abstract ObjectId doReadObjectId()
```
    Handles the logic to read an ObjectId
    
    Returns:
    
    the ObjectId value
  - doReadRegularExpression
```
protected abstract BsonRegularExpression doReadRegularExpression()
```
    Handles the logic to read a regular expression
    
    Returns:
    
    the BsonRegularExpression value
  - doReadDBPointer
```
protected abstract BsonDbPointer doReadDBPointer()
```
    Handles the logic to read a DBPointer
    
    Returns:
    
    the BsonDbPointer value
  - doReadStartArray
```
protected abstract void doReadStartArray()
```
    Handles the logic to read the start of an array
  - doReadStartDocument
```
protected abstract void doReadStartDocument()
```
    Handles the logic to read the start of a document
  - doReadString
```
protected abstract String doReadString()
```
    Handles the logic to read a String
    
    Returns:
    
    the String value
  - doReadSymbol
```
protected abstract String doReadSymbol()
```
    Handles the logic to read a Symbol
    
    Returns:
    
    the String value
  - doReadTimestamp
```
protected abstract BsonTimestamp doReadTimestamp()
```
    Handles the logic to read a timestamp
    
    Returns:
    
    the BsonTimestamp value
  - doReadUndefined
```
protected abstract void doReadUndefined()
```
    Handles the logic to read an Undefined value
  - doSkipName
```
protected abstract void doSkipName()
```
    Handles any logic required to skip the name (reader must be positioned on a name).
  - doSkipValue
```
protected abstract void doSkipValue()
```
    Handles any logic required to skip the value (reader must be positioned on a value).
  - readBinaryData
```
public BsonBinary readBinaryData()
```
    Description copied from interface: BsonReader
    
    Reads BSON Binary data from the reader.
    
    Specified by:
    
    readBinaryData in interface BsonReader
    
    Returns:
    
    A Binary.
  - peekBinarySubType
```
public byte peekBinarySubType()
```
    Description copied from interface: BsonReader
    
    Peeks the subtype of the binary data that the reader is positioned at. This operation is not permitted if the mark is already set.
    
    Specified by:
    
    peekBinarySubType in interface BsonReader
    
    Returns:
    
    the subtype
    
    See Also:
    
    BsonReader.mark()
  - readBoolean
```
public boolean readBoolean()
```
    Description copied from interface: BsonReader
    
    Reads a BSON Boolean from the reader.
    
    Specified by:
    
    readBoolean in interface BsonReader
    
    Returns:
    
    A Boolean.
  - readBsonType
```
public abstract BsonType readBsonType()
```
    Description copied from interface: BsonReader
    
    Reads a BSONType from the reader.
    
    Specified by:
    
    readBsonType in interface BsonReader
    
    Returns:
    
    A BSONType.
  - readDateTime
```
public long readDateTime()
```
    Description copied from interface: BsonReader
    
    Reads a BSON DateTime from the reader.
    
    Specified by:
    
    readDateTime in interface BsonReader
    
    Returns:
    
    The number of milliseconds since the Unix epoch.
  - readDouble
```
public double readDouble()
```
    Description copied from interface: BsonReader
    
    Reads a BSON Double from the reader.
    
    Specified by:
    
    readDouble in interface BsonReader
    
    Returns:
    
    A Double.
  - readEndArray
```
public void readEndArray()
```
    Description copied from interface: BsonReader
    
    Reads the end of a BSON array from the reader.
    
    Specified by:
    
    readEndArray in interface BsonReader
  - readEndDocument
```
public void readEndDocument()
```
    Description copied from interface: BsonReader
    
    Reads the end of a BSON document from the reader.
    
    Specified by:
    
    readEndDocument in interface BsonReader
  - readInt32
```
public int readInt32()
```
    Description copied from interface: BsonReader
    
    Reads a BSON Int32 from the reader.
    
    Specified by:
    
    readInt32 in interface BsonReader
    
    Returns:
    
    An Int32.
  - readInt64
```
public long readInt64()
```
    Description copied from interface: BsonReader
    
    Reads a BSON Int64 from the reader.
    
    Specified by:
    
    readInt64 in interface BsonReader
    
    Returns:
    
    An Int64.
  - readDecimal128
```
public Decimal128 readDecimal128()
```
    Description copied from interface: BsonReader
    
    Reads a BSON Decimal128 from the reader.
    
    Specified by:
    
    readDecimal128 in interface BsonReader
    
    Returns:
    
    A Decimal128
  - readJavaScript
```
public String readJavaScript()
```
    Description copied from interface: BsonReader
    
    Reads a BSON JavaScript from the reader.
    
    Specified by:
    
    readJavaScript in interface BsonReader
    
    Returns:
    
    A string.
  - readJavaScriptWithScope
```
public String readJavaScriptWithScope()
```
    Description copied from interface: BsonReader
    
    Reads a BSON JavaScript with scope from the reader (call readStartDocument next to read the scope).
    
    Specified by:
    
    readJavaScriptWithScope in interface BsonReader
    
    Returns:
    
    A string.
  - readMaxKey
```
public void readMaxKey()
```
    Description copied from interface: BsonReader
    
    Reads a BSON MaxKey from the reader.
    
    Specified by:
    
    readMaxKey in interface BsonReader
  - readMinKey
```
public void readMinKey()
```
    Description copied from interface: BsonReader
    
    Reads a BSON MinKey from the reader.
    
    Specified by:
    
    readMinKey in interface BsonReader
  - readNull
```
public void readNull()
```
    Description copied from interface: BsonReader
    
    Reads a BSON null from the reader.
    
    Specified by:
    
    readNull in interface BsonReader
  - readObjectId
```
public ObjectId readObjectId()
```
    Description copied from interface: BsonReader
    
    Reads a BSON ObjectId from the reader.
    
    Specified by:
    
    readObjectId in interface BsonReader
    
    Returns:
    
    the ObjectId value
  - readRegularExpression
```
public BsonRegularExpression readRegularExpression()
```
    Description copied from interface: BsonReader
    
    Reads a BSON regular expression from the reader.
    
    Specified by:
    
    readRegularExpression in interface BsonReader
    
    Returns:
    
    A regular expression.
  - readDBPointer
```
public BsonDbPointer readDBPointer()
```
    Description copied from interface: BsonReader
    
    Reads a BSON DBPointer from the reader.
    
    Specified by:
    
    readDBPointer in interface BsonReader
    
    Returns:
    
    A DBPointer.
  - readStartArray
```
public void readStartArray()
```
    Description copied from interface: BsonReader
    
    Reads the start of a BSON array.
    
    Specified by:
    
    readStartArray in interface BsonReader
  - readStartDocument
```
public void readStartDocument()
```
    Description copied from interface: BsonReader
    
    Reads the start of a BSON document.
    
    Specified by:
    
    readStartDocument in interface BsonReader
  - readString
```
public String readString()
```
    Description copied from interface: BsonReader
    
    Reads a BSON String from the reader.
    
    Specified by:
    
    readString in interface BsonReader
    
    Returns:
    
    A String.
  - readSymbol
```
public String readSymbol()
```
    Description copied from interface: BsonReader
    
    Reads a BSON symbol from the reader.
    
    Specified by:
    
    readSymbol in interface BsonReader
    
    Returns:
    
    A string.
  - readTimestamp
```
public BsonTimestamp readTimestamp()
```
    Description copied from interface: BsonReader
    
    Reads a BSON timestamp from the reader.
    
    Specified by:
    
    readTimestamp in interface BsonReader
    
    Returns:
    
    The combined timestamp/increment.
  - readUndefined
```
public void readUndefined()
```
    Description copied from interface: BsonReader
    
    Reads a BSON undefined from the reader.
    
    Specified by:
    
    readUndefined in interface BsonReader
  - skipName
```
public void skipName()
```
    Description copied from interface: BsonReader
    
    Skips the name (reader must be positioned on a name).
    
    Specified by:
    
    skipName in interface BsonReader
  - skipValue
```
public void skipValue()
```
    Description copied from interface: BsonReader
    
    Skips the value (reader must be positioned on a value).
    
    Specified by:
    
    skipValue in interface BsonReader
  - readBinaryData
```
public BsonBinary readBinaryData(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON Binary data element from the reader.
    
    Specified by:
    
    readBinaryData in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    A Binary.
  - readBoolean
```
public boolean readBoolean(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON Boolean element from the reader.
    
    Specified by:
    
    readBoolean in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    A Boolean.
  - readDateTime
```
public long readDateTime(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON DateTime element from the reader.
    
    Specified by:
    
    readDateTime in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    The number of milliseconds since the Unix epoch.
  - readDouble
```
public double readDouble(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON Double element from the reader.
    
    Specified by:
    
    readDouble in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    A Double.
  - readInt32
```
public int readInt32(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON Int32 element from the reader.
    
    Specified by:
    
    readInt32 in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    An Int32.
  - readInt64
```
public long readInt64(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON Int64 element from the reader.
    
    Specified by:
    
    readInt64 in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    An Int64.
  - readDecimal128
```
public Decimal128 readDecimal128(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON Decimal128 element from the reader.
    
    Specified by:
    
    readDecimal128 in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    A Decimal128
  - readJavaScript
```
public String readJavaScript(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON JavaScript element from the reader.
    
    Specified by:
    
    readJavaScript in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    A string.
  - readJavaScriptWithScope
```
public String readJavaScriptWithScope(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON JavaScript with scope element from the reader (call readStartDocument next to read the scope).
    
    Specified by:
    
    readJavaScriptWithScope in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    A string.
  - readMaxKey
```
public void readMaxKey(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON MaxKey element from the reader.
    
    Specified by:
    
    readMaxKey in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
  - readMinKey
```
public void readMinKey(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON MinKey element from the reader.
    
    Specified by:
    
    readMinKey in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
  - readName
```
public String readName()
```
    Description copied from interface: BsonReader
    
    Reads the name of an element from the reader.
    
    Specified by:
    
    readName in interface BsonReader
    
    Returns:
    
    The name of the element.
  - readName
```
public void readName(String name)
```
    Description copied from interface: BsonReader
    
    Reads the name of an element from the reader.
    
    Specified by:
    
    readName in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
  - readNull
```
public void readNull(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON null element from the reader.
    
    Specified by:
    
    readNull in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
  - readObjectId
```
public ObjectId readObjectId(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON ObjectId element from the reader.
    
    Specified by:
    
    readObjectId in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    ObjectId.
  - readRegularExpression
```
public BsonRegularExpression readRegularExpression(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON regular expression element from the reader.
    
    Specified by:
    
    readRegularExpression in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    A regular expression.
  - readDBPointer
```
public BsonDbPointer readDBPointer(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON DBPointer element from the reader.
    
    Specified by:
    
    readDBPointer in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    A DBPointer.
  - readString
```
public String readString(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON string element from the reader.
    
    Specified by:
    
    readString in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    A String.
  - readSymbol
```
public String readSymbol(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON symbol element from the reader.
    
    Specified by:
    
    readSymbol in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    A string.
  - readTimestamp
```
public BsonTimestamp readTimestamp(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON timestamp element from the reader.
    
    Specified by:
    
    readTimestamp in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
    
    Returns:
    
    The combined timestamp/increment.
  - readUndefined
```
public void readUndefined(String name)
```
    Description copied from interface: BsonReader
    
    Reads a BSON undefined element from the reader.
    
    Specified by:
    
    readUndefined in interface BsonReader
    
    Parameters:
    
    name - The name of the element.
  - throwInvalidContextType
```
protected void throwInvalidContextType(String methodName,
                                       BsonContextType actualContextType,
                                       BsonContextType... validContextTypes)
```
    Throws an InvalidOperationException when the method called is not valid for the current ContextType.
    
    Parameters:
    
    methodName - The name of the method.
    
    actualContextType - The actual ContextType.
    
    validContextTypes - The valid ContextTypes.
    
    Throws:
    
    BsonInvalidOperationException - when the method called is not valid for the current ContextType.
  - throwInvalidState
```
protected void throwInvalidState(String methodName,
                                 AbstractBsonReader.State... validStates)
```
    Throws an InvalidOperationException when the method called is not valid for the current state.
    
    Parameters:
    
    methodName - The name of the method.
    
    validStates - The valid states.
    
    Throws:
    
    BsonInvalidOperationException - when the method called is not valid for the current state.
  - verifyBSONType
```
protected void verifyBSONType(String methodName,
                              BsonType requiredBsonType)
```
    Verifies the current state and BSONType of the reader.
    
    Parameters:
    
    methodName - The name of the method calling this one.
    
    requiredBsonType - The required BSON type.
  - verifyName
```
protected void verifyName(String expectedName)
```
    Verifies the name of the current element.
    
    Parameters:
    
    expectedName - The expected name.
    
    Throws:
    
    BsonSerializationException - when the name read is not the expected name
  - checkPreconditions
```
protected void checkPreconditions(String methodName,
                                  BsonType type)
```
    Ensures any conditions are met before reading commences. Throws exceptions if the conditions are not met.
    
    Parameters:
    
    methodName - the name of the current method, which will indicate the field being read
    
    type - the type of this field
  - getContext
```
protected AbstractBsonReader.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.
    
    Returns:
    
    the context
  - setContext
```
protected void setContext(AbstractBsonReader.Context context)
```
    Set the context, which will indicate which state the reader is in, for example which part of a document it's currently reading.
    
    Parameters:
    
    context - the current context.
  - getNextState
```
protected AbstractBsonReader.State getNextState()
```
    Returns the next State to transition to, based on the AbstractBsonReader.Context of this reader.
    
    Returns:
    
    the next state

Class AbstractBsonReader

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface org.bson.BsonReader

Constructor Detail

AbstractBsonReader

Method Detail

getCurrentBsonType

getCurrentName

setCurrentBsonType

getState

setState

setCurrentName

close

isClosed

doReadBinaryData

doPeekBinarySubType

doReadBoolean

doReadDateTime

doReadDouble

doReadEndArray

doReadEndDocument

doReadInt32

doReadInt64

doReadDecimal128

doReadJavaScript

doReadJavaScriptWithScope

doReadMaxKey

doReadMinKey

doReadNull

doReadObjectId

doReadRegularExpression

doReadDBPointer

doReadStartArray

doReadStartDocument

doReadString

doReadSymbol

doReadTimestamp

doReadUndefined

doSkipName

doSkipValue

readBinaryData

peekBinarySubType

readBoolean

readBsonType

readDateTime

readDouble

readEndArray

readEndDocument

readInt32

readInt64

readDecimal128

readJavaScript

readJavaScriptWithScope

readMaxKey

readMinKey

readNull

readObjectId

readRegularExpression

readDBPointer

readStartArray

readStartDocument

readString

readSymbol

readTimestamp

readUndefined

skipName

skipValue

readBinaryData

readBoolean

readDateTime

readDouble

readInt32

readInt64

readDecimal128

readJavaScript

readJavaScriptWithScope

readMaxKey