io.micronaut.serde.bson

Class BsonReaderDecoder

java.lang.Object

io.micronaut.serde.support.AbstractStreamDecoder

io.micronaut.serde.bson.BsonReaderDecoder

All Implemented Interfaces:

Decoder, java.lang.AutoCloseable

@Internal
public final class BsonReaderDecoder
extends AbstractStreamDecoder

Bson implementation of Decoder.

Author:

Denis Stepanov

Nested Class Summary

Nested classes/interfaces inherited from class io.micronaut.serde.support.AbstractStreamDecoder

AbstractStreamDecoder.TokenType, AbstractStreamDecoder.ValueDecoder<R>

Constructor Summary

Constructors

Constructor and Description
BsonReaderDecoder(org.bson.BsonReader bsonReader)

Method Summary

Modifier and Type	Method and Description
protected void	backFromChild(AbstractStreamDecoder child) Called when the old child has finished processing and returns control of the stream to the parent.
protected java.lang.String	coerceScalarToString() Decode any non-null scalar value (number, string or boolean) to its string representation.
protected AbstractStreamDecoder	createChildDecoder() Create a new child decoder using AbstractStreamDecoder(AbstractStreamDecoder).
java.io.IOException	createDeserializationException(java.lang.String message, java.lang.Object invalidValue) Creates an exception for the given message.
protected AbstractStreamDecoder.TokenType	currentToken()
Decoder	decodeBuffer() Buffer the whole subtree of this value and return it as a new Decoder.
<T> T	decodeCustom(org.bson.codecs.Decoder<T> decoder, org.bson.codecs.DecoderContext context)
org.bson.types.Decimal128	decodeDecimal128() Decodes Decimal128.
org.bson.types.ObjectId	decodeObjectId() Decodes ObjectId.
protected java.lang.Number	getBestNumber() Decode the current AbstractStreamDecoder.TokenType.NUMBER value as a Number value.
protected java.math.BigDecimal	getBigDecimal() Decode the current AbstractStreamDecoder.TokenType.NUMBER value as a BigDecimal value.
protected java.math.BigInteger	getBigInteger() Decode the current AbstractStreamDecoder.TokenType.NUMBER value as a BigInteger value.
protected boolean	getBoolean() Decode the current AbstractStreamDecoder.TokenType.BOOLEAN value.
protected java.lang.String	getCurrentKey() Get the current object field name.
protected double	getDouble() Decode the current AbstractStreamDecoder.TokenType.NUMBER value as a double value.
protected long	getLong() Decode the current AbstractStreamDecoder.TokenType.NUMBER value as a long value.
protected void	nextToken() Move to the next token.
protected void	skipChildren() If we are at a AbstractStreamDecoder.TokenType.START_OBJECT or AbstractStreamDecoder.TokenType.START_ARRAY, skip to the matching AbstractStreamDecoder.TokenType.END_OBJECT or AbstractStreamDecoder.TokenType.END_ARRAY.

Methods inherited from class io.micronaut.serde.support.AbstractStreamDecoder

decodeArbitrary, decodeArray, decodeBigDecimal, decodeBigInteger, decodeBoolean, decodeByte, decodeChar, decodeCustom, decodeCustom, decodeDouble, decodeFloat, decodeInt, decodeKey, decodeLong, decodeNull, decodeNumber, decodeObject, decodeShort, decodeString, finishStructure, getBestNumberNode, getInteger, hasNextArrayValue, skipValue, unexpectedToken

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.micronaut.serde.Decoder

close, decodeArray, decodeObject

Constructor Detail

BsonReaderDecoder

public BsonReaderDecoder(org.bson.BsonReader bsonReader)

Method Detail

backFromChild

protected void backFromChild(AbstractStreamDecoder child)
                      throws java.io.IOException

Description copied from class: AbstractStreamDecoder

Called when the old child has finished processing and returns control of the stream to the parent. Current token is assumed to be AbstractStreamDecoder.TokenType.END_ARRAY or AbstractStreamDecoder.TokenType.END_OBJECT. However we AbstractStreamDecoder.currentToken() may hold an outdated value until AbstractStreamDecoder.nextToken() is called, which this method does.

Overrides:

backFromChild in class AbstractStreamDecoder

Parameters:

child - The now-invalid child decoder.

Throws:

java.io.IOException - if an unrecoverable error occurs

nextToken

protected void nextToken()

Description copied from class: AbstractStreamDecoder

Move to the next token.

Specified by:

nextToken in class AbstractStreamDecoder

getCurrentKey

protected java.lang.String getCurrentKey()

Description copied from class: AbstractStreamDecoder

Get the current object field name. Only called for AbstractStreamDecoder.TokenType.KEY.

Specified by:

getCurrentKey in class AbstractStreamDecoder

Returns:

The current field key

coerceScalarToString

protected java.lang.String coerceScalarToString()
                                         throws java.io.IOException

Description copied from class: AbstractStreamDecoder

Decode any non-null scalar value (number, string or boolean) to its string representation.

Specified by:

coerceScalarToString in class AbstractStreamDecoder

Returns:

The current value, coerced to a string

Throws:

java.io.IOException - if an unrecoverable error occurs

createChildDecoder

protected AbstractStreamDecoder createChildDecoder()

Description copied from class: AbstractStreamDecoder

Create a new child decoder using AbstractStreamDecoder(AbstractStreamDecoder).

Specified by:

createChildDecoder in class AbstractStreamDecoder

Returns:

The new decoder

getBoolean

protected boolean getBoolean()

Description copied from class: AbstractStreamDecoder

Decode the current AbstractStreamDecoder.TokenType.BOOLEAN value. Called for no other token type.

Specified by:

getBoolean in class AbstractStreamDecoder

Returns:

The boolean value

getLong

protected long getLong()

Description copied from class: AbstractStreamDecoder

Decode the current AbstractStreamDecoder.TokenType.NUMBER value as a long value. Called for no other token type.

Specified by:

getLong in class AbstractStreamDecoder

Returns:

The number value

getDouble

protected double getDouble()

Description copied from class: AbstractStreamDecoder

Decode the current AbstractStreamDecoder.TokenType.NUMBER value as a double value. Called for no other token type.

Specified by:

getDouble in class AbstractStreamDecoder

Returns:

The number value

getBigInteger

protected java.math.BigInteger getBigInteger()

Description copied from class: AbstractStreamDecoder

Decode the current AbstractStreamDecoder.TokenType.NUMBER value as a BigInteger value. Called for no other token type.

Specified by:

getBigInteger in class AbstractStreamDecoder

Returns:

The number value

getBigDecimal

protected java.math.BigDecimal getBigDecimal()

Description copied from class: AbstractStreamDecoder

Decode the current AbstractStreamDecoder.TokenType.NUMBER value as a BigDecimal value. Called for no other token type.

Specified by:

getBigDecimal in class AbstractStreamDecoder

Returns:

The number value

getBestNumber

protected java.lang.Number getBestNumber()

Description copied from class: AbstractStreamDecoder

Decode the current AbstractStreamDecoder.TokenType.NUMBER value as a Number value. Called for no other token type.

Specified by:

getBestNumber in class AbstractStreamDecoder

Returns:

The number value

skipChildren

protected void skipChildren()

Description copied from class: AbstractStreamDecoder

If we are at a AbstractStreamDecoder.TokenType.START_OBJECT or AbstractStreamDecoder.TokenType.START_ARRAY, skip to the matching AbstractStreamDecoder.TokenType.END_OBJECT or AbstractStreamDecoder.TokenType.END_ARRAY. Else, do nothing.

Specified by:

skipChildren in class AbstractStreamDecoder

currentToken

protected AbstractStreamDecoder.TokenType currentToken()

Specified by:

currentToken in class AbstractStreamDecoder

Returns:

The current token.

createDeserializationException

public java.io.IOException createDeserializationException(java.lang.String message,
                                                          java.lang.Object invalidValue)

Description copied from interface: Decoder

Creates an exception for the given message.

Parameters:

message - The message, never null

invalidValue - The invalid value. Can be null.

Returns:

The exception, never null

decodeDecimal128

public org.bson.types.Decimal128 decodeDecimal128()
                                           throws java.io.IOException

Decodes Decimal128.

Returns:

decoded value

Throws:

java.io.IOException

decodeObjectId

public org.bson.types.ObjectId decodeObjectId()
                                       throws java.io.IOException

Decodes ObjectId.

Returns:

decoded value

Throws:

java.io.IOException

decodeCustom

public <T> T decodeCustom(org.bson.codecs.Decoder<T> decoder,
                          org.bson.codecs.DecoderContext context)
                   throws java.io.IOException

Throws:

java.io.IOException

decodeBuffer

public Decoder decodeBuffer()
                     throws java.io.IOException

Description copied from interface: Decoder

Buffer the whole subtree of this value and return it as a new Decoder. The returned Decoder can be used independently to this Decoder. This means actual parsing of the subtree can be delayed.

The returned Decoder should behave identically to this Decoder. This means that for example decoder.decodeDouble() should be equivalent to decoder.decodeBuffer().decodeDouble().

Specified by:

decodeBuffer in interface Decoder

Overrides:

decodeBuffer in class AbstractStreamDecoder

Returns:

An independent decoder that visits this subtree.

Throws:

java.io.IOException - If an unrecoverable error occurs