Decodes Buffers into HttpMessages and HttpContents.

Parameters that prevents excessive memory consumption

Name	Default value	Meaning
`maxInitialLineLength`	4096	The maximum length of the initial line (e.g. `"GET / HTTP/1.0"` or `"HTTP/1.0 200 OK"`) If the length of the initial line exceeds this value, a `TooLongHttpLineException` will be raised.
`maxHeaderSize`	8192	The maximum length of all headers. If the sum of the length of each header exceeds this value, a `TooLongHttpHeaderException` will be raised.

Parameters that control parsing behavior

Name	Default value	Meaning
`allowDuplicateContentLengths`	false	When set to `false`, will reject any messages that contain multiple Content-Length header fields. When set to `true`, will allow multiple Content-Length headers only if they are all the same decimal value. The duplicated field-values will be replaced with a single valid Content-Length field. See RFC 7230, Section 3.3.2.

Chunked Content

If the content of an HTTP message is greater than maxChunkSize or the transfer encoding of the HTTP message is 'chunked', this decoder generates one HttpMessage instance and its following HttpContents per single HTTP message to avoid excessive memory consumption. For example, the following HTTP message:

GET / HTTP/1.1
Transfer-Encoding: chunked

1a
abcdefghijklmnopqrstuvwxyz
10
1234567890abcdef
0
Content-MD5: ...
[blank line]

triggers HttpRequestDecoder to generate 3 objects:

An HttpRequest,
The first HttpContent whose content is 'abcdefghijklmnopqrstuvwxyz',
The second LastHttpContent whose content is '1234567890abcdef', which marks the end of the content.

If you prefer not to handle HttpContents by yourself for your convenience, insert HttpObjectAggregator after this decoder in the ChannelPipeline. However, please note that your server might not be as memory efficient as without the aggregator.

Extensibility

Please note that this decoder is designed to be extended to implement a protocol derived from HTTP, such as RTSP and ICAP. To implement the decoder of such a derived protocol, extend this class and implement all abstract methods properly.

Nested and Inner Type Summary

Modifier and Type	Class and Description
private static class	HttpObjectDecoder.HeaderParser
private class	HttpObjectDecoder.LineParser
private static enum	HttpObjectDecoder.State The internal state of `HttpObjectDecoder`.

Field Summary

Modifier and Type	Field and Description
private final boolean	allowDuplicateContentLengths
private final boolean	chunkedSupported
private long	chunkSize
private long	contentLength
private HttpObjectDecoder.State	currentState
public static final boolean	DEFAULT_ALLOW_DUPLICATE_CONTENT_LENGTHS
public static final boolean	DEFAULT_CHUNKED_SUPPORTED
public static final int	DEFAULT_INITIAL_BUFFER_SIZE
public static final int	DEFAULT_MAX_HEADER_SIZE
public static final int	DEFAULT_MAX_INITIAL_LINE_LENGTH
public static final boolean	DEFAULT_VALIDATE_HEADERS
private static final String	EMPTY_VALUE
private final HttpObjectDecoder.HeaderParser	headerParser
private final HttpObjectDecoder.LineParser	lineParser
private HttpMessage	message
private CharSequence	name
private volatile boolean	resetRequested
private LastHttpContent<?>	trailer
protected final boolean	validateHeaders
private CharSequence	value

Inherited from io.netty5.handler.codec.ByteToMessageDecoder:: COMPOSITE_CUMULATOR MERGE_CUMULATOR

Constructor Summary

Access	Constructor and Description
protected	HttpObjectDecoder() Creates a new instance with the default `maxInitialLineLength (4096`}, `maxHeaderSize (8192)`, and `maxChunkSize (8192)`.
protected	HttpObjectDecoder(int maxInitialLineLength, int maxHeaderSize, boolean chunkedSupported) Creates a new instance with the specified parameters.
protected	HttpObjectDecoder(int maxInitialLineLength, int maxHeaderSize, boolean chunkedSupported, boolean validateHeaders) Creates a new instance with the specified parameters.
protected	HttpObjectDecoder(int maxInitialLineLength, int maxHeaderSize, boolean chunkedSupported, boolean validateHeaders, int initialBufferSize) Creates a new instance with the specified parameters.
protected	HttpObjectDecoder(int maxInitialLineLength, int maxHeaderSize, boolean chunkedSupported, boolean validateHeaders, int initialBufferSize, boolean allowDuplicateContentLengths)

Method Summary

Modifier and Type	Method and Description
public void	channelInboundEvent(ChannelHandlerContext ctx, Object evt) Overrides default io.netty5.channel.ChannelHandler.channelInboundEvent. Gets called if a custom inbound event happened.
private long	contentLength()
protected abstract HttpMessage	createInvalidMessage(ChannelHandlerContext ctx)
protected abstract HttpMessage	createMessage(String[] initialLine)
protected void	decode(ChannelHandlerContext the `ChannelHandlerContext` which this `ByteToMessageDecoder` belongs to ctx, Buffer the `Buffer` from which to read data buffer) Implements abstract io.netty5.handler.codec.ByteToMessageDecoder.decode. Decode the from one `Buffer` to another.
protected void	decodeLast(ChannelHandlerContext ctx, Buffer in) Overrides io.netty5.handler.codec.ByteToMessageDecoder.decodeLast. Is called one last time when the `ChannelHandlerContext` goes in-active.
private static int	findEndOfString(AppendableCharSequence sb)
private static int	findNonSPLenient(AppendableCharSequence sb, int offset)
private static int	findNonWhitespace(AppendableCharSequence sb, int offset)
private static int	findSPLenient(AppendableCharSequence sb, int offset)
private static int	getChunkSize(String hex)
protected void	handleTransferEncodingChunkedWithContentLength(HttpMessage message) Invoked when a message with both a "Transfer-Encoding: chunked" and a "Content-Length" header field is detected.
private HttpContent<?>	invalidChunk(BufferAllocator allocator, Buffer in, Exception cause)
private HttpMessage	invalidMessage(ChannelHandlerContext ctx, Buffer in, Exception cause)
private HttpMessage	invalidMessage(ChannelHandlerContext ctx, Exception cause)
protected boolean	isContentAlwaysEmpty(HttpMessage msg)
protected abstract boolean	isDecodingRequest()
private static boolean	isOWS(char ch)
private static boolean	isSPLenient(char c)
protected boolean	isSwitchingToNonHttp1Protocol(HttpResponse msg) Returns true if the server switched to a different protocol than HTTP/1.0 or HTTP/1.1, e.g. HTTP/2 or Websocket.
private HttpObjectDecoder.State	readHeaders(Buffer buffer)
private LastHttpContent<?>	readTrailingHeaders(BufferAllocator allocator, Buffer buffer)
public void	reset() Resets the state of the decoder so that it is ready to decode a new message.
private void	resetNow()
private void	splitHeader(AppendableCharSequence sb)
private static String[]	splitInitialLine(AppendableCharSequence sb)

Inherited from io.netty5.handler.codec.ByteToMessageDecoder:: actualReadableBytes channelInactive channelRead channelReadComplete channelShutdown discardSomeReadBytes handlerAdded handlerAdded0 handlerRemoved handlerRemoved0 internalBuffer isSharable isSingleDecode setSingleDecode

Field Detail

allowDuplicateContentLengths	back to summary
private final boolean allowDuplicateContentLengths

chunkedSupported	back to summary
private final boolean chunkedSupported

chunkSize	back to summary
private long chunkSize

contentLength	back to summary
private long contentLength

currentState	back to summary
private HttpObjectDecoder.State currentState

DEFAULT_ALLOW_DUPLICATE_CONTENT_LENGTHS	back to summary
public static final boolean DEFAULT_ALLOW_DUPLICATE_CONTENT_LENGTHS

DEFAULT_CHUNKED_SUPPORTED	back to summary
public static final boolean DEFAULT_CHUNKED_SUPPORTED

DEFAULT_INITIAL_BUFFER_SIZE	back to summary
public static final int DEFAULT_INITIAL_BUFFER_SIZE

DEFAULT_MAX_HEADER_SIZE	back to summary
public static final int DEFAULT_MAX_HEADER_SIZE

DEFAULT_MAX_INITIAL_LINE_LENGTH	back to summary
public static final int DEFAULT_MAX_INITIAL_LINE_LENGTH

DEFAULT_VALIDATE_HEADERS	back to summary
public static final boolean DEFAULT_VALIDATE_HEADERS

EMPTY_VALUE	back to summary
private static final String EMPTY_VALUE

headerParser	back to summary
private final HttpObjectDecoder.HeaderParser headerParser

lineParser	back to summary
private final HttpObjectDecoder.LineParser lineParser

message	back to summary
private HttpMessage message

name	back to summary
private CharSequence name

resetRequested	back to summary
private volatile boolean resetRequested

trailer	back to summary
private LastHttpContent<?> trailer

validateHeaders	back to summary
protected final boolean validateHeaders

value	back to summary
private CharSequence value

Constructor Detail

HttpObjectDecoder	back to summary
protected HttpObjectDecoder() Creates a new instance with the default `maxInitialLineLength (4096`}, `maxHeaderSize (8192)`, and `maxChunkSize (8192)`.

HttpObjectDecoder	back to summary
protected HttpObjectDecoder(int maxInitialLineLength, int maxHeaderSize, boolean chunkedSupported) Creates a new instance with the specified parameters.

HttpObjectDecoder	back to summary
protected HttpObjectDecoder(int maxInitialLineLength, int maxHeaderSize, boolean chunkedSupported, boolean validateHeaders) Creates a new instance with the specified parameters.

HttpObjectDecoder	back to summary
protected HttpObjectDecoder(int maxInitialLineLength, int maxHeaderSize, boolean chunkedSupported, boolean validateHeaders, int initialBufferSize) Creates a new instance with the specified parameters.

HttpObjectDecoder	back to summary
protected HttpObjectDecoder(int maxInitialLineLength, int maxHeaderSize, boolean chunkedSupported, boolean validateHeaders, int initialBufferSize, boolean allowDuplicateContentLengths)

Method Detail

channelInboundEvent	back to summary
public void channelInboundEvent(ChannelHandlerContext ctx, Object evt) throws Exception Overrides default io.netty5.channel.ChannelHandler.channelInboundEvent. Doc from io.netty5.channel.ChannelHandler.channelInboundEvent. Gets called if a custom inbound event happened. Annotations @Override

channelInboundEvent

back to summary

public void channelInboundEvent(ChannelHandlerContext ctx, Object evt) throws Exception

Overrides default io.netty5.channel.ChannelHandler.channelInboundEvent.

Doc from io.netty5.channel.ChannelHandler.channelInboundEvent.

Gets called if a custom inbound event happened.

Annotations

@Override

contentLength	back to summary
private long contentLength()

createInvalidMessage	back to summary
protected abstract HttpMessage createInvalidMessage(ChannelHandlerContext ctx)

createMessage	back to summary
protected abstract HttpMessage createMessage(String[] initialLine) throws Exception

decode back to summary

decode	back to summary
protected void decode(ChannelHandlerContext ctx, Buffer buffer) throws Exception Implements abstract io.netty5.handler.codec.ByteToMessageDecoder.decode. Doc from io.netty5.handler.codec.ByteToMessageDecoder.decode. Decode the from one `Buffer` to another. This method will be called till either the input `Buffer` has nothing to read when return from this method or till nothing was read from the input `Buffer`. Parameters ctx:ChannelHandlerContext the `ChannelHandlerContext` which this `ByteToMessageDecoder` belongs to buffer:Buffer the `Buffer` from which to read data Annotations @Override Exceptions Exception: is thrown if an error occurs

protected void decode(ChannelHandlerContext ctx, Buffer buffer) throws Exception

Implements abstract io.netty5.handler.codec.ByteToMessageDecoder.decode.

Doc from io.netty5.handler.codec.ByteToMessageDecoder.decode.

Decode the from one Buffer to another. This method will be called till either the input Buffer has nothing to read when return from this method or till nothing was read from the input Buffer.

Parameters

ctx:ChannelHandlerContext: the ChannelHandlerContext which this ByteToMessageDecoder belongs to
buffer:Buffer: the Buffer from which to read data

Annotations

@Override

Exceptions

Exception:: is thrown if an error occurs

decodeLast back to summary

decodeLast	back to summary
protected void decodeLast(ChannelHandlerContext ctx, Buffer in) throws Exception Overrides io.netty5.handler.codec.ByteToMessageDecoder.decodeLast. Doc from io.netty5.handler.codec.ByteToMessageDecoder.decodeLast. Is called one last time when the `ChannelHandlerContext` goes in-active. Which means the `channelInactive(ChannelHandlerContext)` was triggered. By default this will just call `decode(ChannelHandlerContext, Buffer)` but sub-classes may override this for some special cleanup operation. Annotations @Override

protected void decodeLast(ChannelHandlerContext ctx, Buffer in) throws Exception

Overrides io.netty5.handler.codec.ByteToMessageDecoder.decodeLast.

Doc from io.netty5.handler.codec.ByteToMessageDecoder.decodeLast.

Is called one last time when the ChannelHandlerContext goes in-active. Which means the channelInactive(ChannelHandlerContext) was triggered. By default this will just call decode(ChannelHandlerContext, Buffer) but sub-classes may override this for some special cleanup operation.

Annotations

@Override

findEndOfString	back to summary
private static int findEndOfString(AppendableCharSequence sb)

findNonSPLenient	back to summary
private static int findNonSPLenient(AppendableCharSequence sb, int offset)

findNonWhitespace	back to summary
private static int findNonWhitespace(AppendableCharSequence sb, int offset)

findSPLenient	back to summary
private static int findSPLenient(AppendableCharSequence sb, int offset)

getChunkSize	back to summary
private static int getChunkSize(String hex)

handleTransferEncodingChunkedWithContentLength	back to summary
protected void handleTransferEncodingChunkedWithContentLength(HttpMessage message) Invoked when a message with both a "Transfer-Encoding: chunked" and a "Content-Length" header field is detected. The default behavior is to remove the Content-Length field, but this method could be overridden to change the behavior (to, e.g., throw an exception and produce an invalid message). See: RFC 7230 section-3.3.3: If a message is received with both a Transfer-Encoding and a Content-Length header field, the Transfer-Encoding overrides the Content-Length. Such a message might indicate an attempt to perform request smuggling (Section 9.5) or response splitting (Section 9.4) and ought to be handled as an error. A sender MUST remove the received Content-Length field prior to forwarding such a message downstream. Also see: https://github.com/apache/tomcat/blob/b693d7c1981/java/org/apache/coyote/http11/Http11Processor.java#L747-L755 https://github.com/nginx/nginx/blob/0ad4393e30c11/src/http/ngx_http_request.c#L1946-L1953

handleTransferEncodingChunkedWithContentLength

back to summary

protected void handleTransferEncodingChunkedWithContentLength(HttpMessage message)

Invoked when a message with both a "Transfer-Encoding: chunked" and a "Content-Length" header field is detected. The default behavior is to remove the Content-Length field, but this method could be overridden to change the behavior (to, e.g., throw an exception and produce an invalid message).

See: RFC 7230 section-3.3.3:

    If a message is received with both a Transfer-Encoding and a
    Content-Length header field, the Transfer-Encoding overrides the
    Content-Length.  Such a message might indicate an attempt to
    perform request smuggling (Section 9.5) or response splitting
    (Section 9.4) and ought to be handled as an error.  A sender MUST
    remove the received Content-Length field prior to forwarding such
    a message downstream.

Also see: https://github.com/apache/tomcat/blob/b693d7c1981/java/org/apache/coyote/http11/Http11Processor.java#L747-L755 https://github.com/nginx/nginx/blob/0ad4393e30c11/src/http/ngx_http_request.c#L1946-L1953

invalidChunk	back to summary
private HttpContent<?> invalidChunk(BufferAllocator allocator, Buffer in, Exception cause)

invalidMessage	back to summary
private HttpMessage invalidMessage(ChannelHandlerContext ctx, Buffer in, Exception cause)

invalidMessage	back to summary
private HttpMessage invalidMessage(ChannelHandlerContext ctx, Exception cause)

isContentAlwaysEmpty	back to summary
protected boolean isContentAlwaysEmpty(HttpMessage msg)

isDecodingRequest	back to summary
protected abstract boolean isDecodingRequest()

isOWS	back to summary
private static boolean isOWS(char ch)

isSPLenient	back to summary
private static boolean isSPLenient(char c)

isSwitchingToNonHttp1Protocol	back to summary
protected boolean isSwitchingToNonHttp1Protocol(HttpResponse msg) Returns true if the server switched to a different protocol than HTTP/1.0 or HTTP/1.1, e.g. HTTP/2 or Websocket. Returns false if the upgrade happened in a different layer, e.g. upgrade from HTTP/1.1 to HTTP/1.1 over TLS.

readHeaders	back to summary
private HttpObjectDecoder.State readHeaders(Buffer buffer)

readTrailingHeaders	back to summary
private LastHttpContent<?> readTrailingHeaders(BufferAllocator allocator, Buffer buffer)

reset	back to summary
public void reset() Resets the state of the decoder so that it is ready to decode a new message. This method is useful for handling a rejected request with `Expect: 100-continue` header.

resetNow	back to summary
private void resetNow()

splitHeader	back to summary
private void splitHeader(AppendableCharSequence sb)

splitInitialLine	back to summary
private static String[] splitInitialLine(AppendableCharSequence sb)

io.netty5.handler.codec.http back to summary

private Class HttpObjectDecoder.HeaderParser

Class Inheritance

extends Object
implements ByteProcessor

java.lang.Object
io.netty5.handler.codec.http.HttpObjectDecoder.HeaderParser

All Implemented Interfaces

io.netty5.util.ByteProcessor

Known Direct Subclasses

io.netty5.handler.codec.http.HttpObjectDecoder.LineParser

Field Summary

Modifier and Type	Field and Description
private final int	maxLength
private final AppendableCharSequence	seq
pack-priv int	size

Constructor Summary

Access	Constructor and Description
pack-priv	HeaderParser(AppendableCharSequence seq, int maxLength)

Method Summary

Modifier and Type	Method and Description
protected final void	increaseCount()
protected TooLongFrameException	newException(int maxLength)
public AppendableCharSequence	parse(Buffer buffer)
public boolean	process(byte value) Implements io.netty5.util.ByteProcessor.process.
public void	reset()

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

maxLength	back to summary
private final int maxLength

seq	back to summary
private final AppendableCharSequence seq

size	back to summary
pack-priv int size

Constructor Detail

HeaderParser	back to summary
pack-priv HeaderParser(AppendableCharSequence seq, int maxLength)

Method Detail

increaseCount	back to summary
protected final void increaseCount()

newException	back to summary
protected TooLongFrameException newException(int maxLength)

parse	back to summary
public AppendableCharSequence parse(Buffer buffer)

process back to summary

public boolean process(byte value)

Implements io.netty5.util.ByteProcessor.process.

Returns:boolean

Doc from io.netty5.util.ByteProcessor.process.

true if the processor wants to continue the loop and handle the next byte in the buffer. false if the processor wants to stop handling bytes and abort the loop.

Annotations

@Override

reset	back to summary
public void reset()

io.netty5.handler.codec.http back to summary

private final Class HttpObjectDecoder.LineParser

Class Inheritance

extends HeaderParser

java.lang.Object
io.netty5.handler.codec.http.HttpObjectDecoder.HeaderParser
io.netty5.handler.codec.http.HttpObjectDecoder.LineParser

Field Summary

Inherited from io.netty5.handler.codec.http.HttpObjectDecoder.HeaderParser:: size

Constructor Summary

Access	Constructor and Description
pack-priv	LineParser(AppendableCharSequence seq, int maxLength)

Method Summary

Modifier and Type	Method and Description
protected TooLongFrameException	newException(int maxLength) Overrides io.netty5.handler.codec.http.HttpObjectDecoder.HeaderParser.newException.
public AppendableCharSequence	parse(Buffer buffer) Overrides io.netty5.handler.codec.http.HttpObjectDecoder.HeaderParser.parse.
public boolean	process(byte value) Overrides io.netty5.handler.codec.http.HttpObjectDecoder.HeaderParser.process. Implements io.netty5.util.ByteProcessor.process.

Inherited from io.netty5.handler.codec.http.HttpObjectDecoder.HeaderParser:: increaseCount reset

Constructor Detail

LineParser	back to summary
pack-priv LineParser(AppendableCharSequence seq, int maxLength)

Method Detail

newException

back to summary

protected TooLongFrameException newException(int maxLength)

Overrides io.netty5.handler.codec.http.HttpObjectDecoder.HeaderParser.newException.

Annotations

@Override

parse

back to summary

public AppendableCharSequence parse(Buffer buffer)

Overrides io.netty5.handler.codec.http.HttpObjectDecoder.HeaderParser.parse.

Annotations

@Override

process back to summary

public boolean process(byte value)

Overrides io.netty5.handler.codec.http.HttpObjectDecoder.HeaderParser.process.

Implements io.netty5.util.ByteProcessor.process.

Returns:boolean

Doc from io.netty5.util.ByteProcessor.process.

true if the processor wants to continue the loop and handle the next byte in the buffer. false if the processor wants to stop handling bytes and abort the loop.

Annotations

@Override

io.netty5.handler.codec.http back to summary

private final Enum HttpObjectDecoder.State

Class Inheritance

extends Enum<HttpObjectDecoder.State>

java.lang.Object
java.lang.Enum
io.netty5.handler.codec.http.HttpObjectDecoder.State

The internal state of HttpObjectDecoder. Internal use only.

Field Summary

Modifier and Type	Field and Description
public static final HttpObjectDecoder.State	BAD_MESSAGE
public static final HttpObjectDecoder.State	READ_CHUNK_DELIMITER
public static final HttpObjectDecoder.State	READ_CHUNK_FOOTER
public static final HttpObjectDecoder.State	READ_CHUNK_SIZE
public static final HttpObjectDecoder.State	READ_CHUNKED_CONTENT
public static final HttpObjectDecoder.State	READ_FIXED_LENGTH_CONTENT
public static final HttpObjectDecoder.State	READ_HEADER
public static final HttpObjectDecoder.State	READ_INITIAL
public static final HttpObjectDecoder.State	READ_VARIABLE_LENGTH_CONTENT
public static final HttpObjectDecoder.State	SKIP_CONTROL_CHARS
public static final HttpObjectDecoder.State	UPGRADED

Constructor Summary

Access	Constructor and Description
private	State()

Method Summary

Modifier and Type	Method and Description
public static HttpObjectDecoder.State	valueOf(String name)
public static HttpObjectDecoder.State[]	values()

Inherited from java.lang.Enum:: clone compareTo describeConstable equals finalize getDeclaringClass hashCode name ordinal toString valueOf

Field Detail

BAD_MESSAGE	back to summary
public static final HttpObjectDecoder.State BAD_MESSAGE

READ_CHUNK_DELIMITER	back to summary
public static final HttpObjectDecoder.State READ_CHUNK_DELIMITER

READ_CHUNK_FOOTER	back to summary
public static final HttpObjectDecoder.State READ_CHUNK_FOOTER

READ_CHUNK_SIZE	back to summary
public static final HttpObjectDecoder.State READ_CHUNK_SIZE

READ_CHUNKED_CONTENT	back to summary
public static final HttpObjectDecoder.State READ_CHUNKED_CONTENT

READ_FIXED_LENGTH_CONTENT	back to summary
public static final HttpObjectDecoder.State READ_FIXED_LENGTH_CONTENT

READ_HEADER	back to summary
public static final HttpObjectDecoder.State READ_HEADER

READ_INITIAL	back to summary
public static final HttpObjectDecoder.State READ_INITIAL

READ_VARIABLE_LENGTH_CONTENT	back to summary
public static final HttpObjectDecoder.State READ_VARIABLE_LENGTH_CONTENT

SKIP_CONTROL_CHARS	back to summary
public static final HttpObjectDecoder.State SKIP_CONTROL_CHARS

UPGRADED	back to summary
public static final HttpObjectDecoder.State UPGRADED

Constructor Detail

State	back to summary
private State()

Method Detail

valueOf	back to summary
public static HttpObjectDecoder.State valueOf(String name)

values	back to summary
public static HttpObjectDecoder.State[] values()

public abstract Class HttpObjectDecoder

Parameters that prevents excessive memory consumption

Parameters that control parsing behavior

Chunked Content

Extensibility

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private Class HttpObjectDecoder.HeaderParser

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private final Class HttpObjectDecoder.LineParser

Field Summary

Constructor Summary

Method Summary

Constructor Detail

Method Detail

private final Enum HttpObjectDecoder.State

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail