org.codehaus.jackson.impl
Class Utf8StreamParser

java.lang.Object
  org.codehaus.jackson.JsonParser
      org.codehaus.jackson.impl.JsonParserBase
          org.codehaus.jackson.impl.JsonNumericParserBase
              org.codehaus.jackson.impl.StreamBasedParserBase
                  org.codehaus.jackson.impl.Utf8NumericParser
                      org.codehaus.jackson.impl.Utf8StreamParser

All Implemented Interfaces:

Closeable

public final class Utf8StreamParser
extends Utf8NumericParser

This is a concrete implementation of JsonParser, which is based on a InputStream as the input source.

Nested Class Summary

Nested classes/interfaces inherited from class org.codehaus.jackson.JsonParser

JsonParser.Feature, JsonParser.NumberType

Field Summary

protected int[]	_quadBuffer This buffer is used for name parsing.
protected BytesToNameCanonicalizer	_symbols

Fields inherited from class org.codehaus.jackson.impl.StreamBasedParserBase

_bufferRecyclable, _inputBuffer, _inputStream

Fields inherited from class org.codehaus.jackson.impl.JsonNumericParserBase

_numberBigDecimal, _numberBigInt, _numberDouble, _numberInt, _numberLong, _numberNegative, _numTypesValid, CHAR_NULL, INT_0, INT_1, INT_2, INT_3, INT_4, INT_5, INT_6, INT_7, INT_8, INT_9, INT_DECIMAL_POINT, INT_e, INT_E, INT_MINUS, INT_PLUS, mExpLength, mFractLength, mIntLength, NR_BIGDECIMAL, NR_BIGINT, NR_DOUBLE, NR_INT, NR_LONG, NR_UNKNOWN

Fields inherited from class org.codehaus.jackson.impl.JsonParserBase

_binaryValue, _closed, _currInputProcessed, _currInputRow, _currInputRowStart, _inputEnd, _inputPtr, _ioContext, _nameCopied, _nameCopyBuffer, _nextToken, _parsingContext, _textBuffer, _tokenIncomplete, _tokenInputCol, _tokenInputRow, _tokenInputTotal

Fields inherited from class org.codehaus.jackson.JsonParser

_currToken, _features, _lastClearedToken

Constructor Summary

Utf8StreamParser(IOContext ctxt, int features, InputStream in, ObjectCodec codec, BytesToNameCanonicalizer sym, byte[] inputBuffer, int start, int end, boolean bufferRecyclable)

Method Summary

protected byte[]	_decodeBase64(Base64Variant b64variant)
protected int	_decodeCharForError(int firstByte)
protected char	_decodeEscaped()
protected void	_finishString()
protected Name	_handleUnusualFieldName(int ch) Method called when we see non-white space character other than double quote, when expecting a field name.
protected void	_matchToken(JsonToken token)
protected Name	_parseFieldName(int i)
protected void	_reportInvalidChar(int c)
protected void	_reportInvalidInitial(int mask)
protected void	_reportInvalidOther(int mask)
protected void	_reportInvalidOther(int mask, int ptr)
protected void	_skipCR() We actually need to check the character value here (to see if we have \n following \r).
protected void	_skipLF()
protected void	_skipString() Method called to skim through rest of unparsed String value, if it is not needed.
void	close() Closes the parser so that no further iteration or data access can be made.
static int[]	growArrayBy(int[] arr, int more)
JsonToken	nextToken() Main iteration method, which will advance stream enough to determine type of the next token, if any.
protected Name	parseEscapedFieldName(int[] quads, int qlen, int currQuad, int ch, int currQuadBytes) Slower parsing method which is generally branched to when an escape sequence is detected (or alternatively for long names, or ones crossing input buffer boundary).
protected Name	parseLongFieldName(int q)
protected Name	parseMediumFieldName(int q1, int q2)
<T> T	readValueAs(Class<T> valueType) Method to deserialize Json content into a non-container type (it can be an array type, however): typically a bean, array or a wrapper type (like Boolean).
<T> T	readValueAs(TypeReference<?> valueTypeRef) Method to deserialize Json content into a Java type, reference to which is passed as argument.
JsonNode	readValueAsTree() Method to deserialize Json content into equivalent "tree model", represented by root JsonNode of resulting model.
protected IllegalArgumentException	reportInvalidChar(Base64Variant b64variant, int ch, int bindex)
protected IllegalArgumentException	reportInvalidChar(Base64Variant b64variant, int ch, int bindex, String msg)
protected Name	slowParseFieldName() Method called when not even first 8 bytes are guaranteed to come consequtively.

Methods inherited from class org.codehaus.jackson.impl.Utf8NumericParser

parseNumberText

Methods inherited from class org.codehaus.jackson.impl.StreamBasedParserBase

_closeInput, _releaseBuffers, loadMore

Methods inherited from class org.codehaus.jackson.impl.JsonNumericParserBase

convertNumberToBigDecimal, convertNumberToBigInteger, convertNumberToDouble, convertNumberToInt, convertNumberToLong, getBigIntegerValue, getByteValue, getDecimalValue, getDoubleValue, getFloatValue, getIntValue, getLongValue, getNumberType, getNumberValue, getShortValue, parseNumericValue, reportInvalidNumber, reportOverflowInt, reportOverflowLong, reportUnexpectedNumberChar, reset

Methods inherited from class org.codehaus.jackson.impl.JsonParserBase

_constructError, _constructError, _getByteArrayBuilder, _getCharDesc, _handleEOF, _reportError, _reportInvalidEOF, _reportInvalidEOF, _reportMismatchedEndMarker, _reportUnexpectedChar, _throwInternal, _throwInvalidSpace, _throwUnquotedSpace, _wrapError, getBinaryValue, getCurrentLocation, getCurrentName, getParsingContext, getText, getTextCharacters, getTextLength, getTextOffset, getTokenCharacterOffset, getTokenColumnNr, getTokenLineNr, getTokenLocation, isClosed, loadMoreGuaranteed, nextValue, skipChildren

Methods inherited from class org.codehaus.jackson.JsonParser

clearCurrentToken, configure, disable, disableFeature, enable, enableFeature, getBinaryValue, getCurrentToken, getLastClearedToken, hasCurrentToken, isEnabled, isFeatureEnabled, setFeature

Methods inherited from class java.lang.Object

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

Field Detail

_symbols

protected final BytesToNameCanonicalizer _symbols

_quadBuffer

protected int[] _quadBuffer

This buffer is used for name parsing.

Constructor Detail

Utf8StreamParser

public Utf8StreamParser(IOContext ctxt,
                        int features,
                        InputStream in,
                        ObjectCodec codec,
                        BytesToNameCanonicalizer sym,
                        byte[] inputBuffer,
                        int start,
                        int end,
                        boolean bufferRecyclable)

Method Detail

nextToken

public JsonToken nextToken()
                    throws IOException,
                           JsonParseException

Description copied from class: JsonParser

Main iteration method, which will advance stream enough to determine type of the next token, if any. If none remaining (stream has no content other than possible white space before ending), null will be returned.

Specified by:

nextToken in class JsonParserBase

Returns:

Next token from the stream, if any found, or null to indicate end-of-input

Throws:

IOException

JsonParseException

close

public void close()
           throws IOException

Description copied from class: JsonParser

Closes the parser so that no further iteration or data access can be made.

Method will also close the underlying input source, if parser either owns the input source, or feature JsonParser.Feature.AUTO_CLOSE_SOURCE is enabled. Whether parser owns the input source depends on factory method that was used to construct instance (so check JsonFactory for details, but the general idea is that if caller passes in closable resource (such as InputStream or Reader) parser does NOT own the source; but if it passes a reference (such as File or URL and creates stream or reader it does own them.

Specified by:

close in interface Closeable

Overrides:

close in class JsonParserBase

Throws:

IOException

readValueAs

public final <T> T readValueAs(Class<T> valueType)
                    throws IOException,
                           JsonProcessingException

Description copied from class: JsonParser

Method to deserialize Json content into a non-container type (it can be an array type, however): typically a bean, array or a wrapper type (like Boolean). Note: method can only be called if the parser has an object codec assigned; this is true for parsers constructed by MappingJsonFactory but not for JsonFactory (unless its setCodec method has been explicitly called).

This method may advance the event stream, for structured types the current event will be the closing end marker (END_ARRAY, END_OBJECT) of the bound structure. For non-structured Json types (and for JsonToken.VALUE_EMBEDDED_OBJECT) stream is not advanced.

Note: this method should NOT be used if the result type is a container (Collection or Map. The reason is that due to type erasure, key and value types can not be introspected when using this method.

Specified by:

readValueAs in class JsonParser

Throws:

IOException

JsonProcessingException

readValueAs

public final <T> T readValueAs(TypeReference<?> valueTypeRef)
                    throws IOException,
                           JsonProcessingException

Description copied from class: JsonParser

Method to deserialize Json content into a Java type, reference to which is passed as argument. Type is passed using so-called "super type token" and specifically needs to be used if the root type is a parameterized (generic) container type. Note: method can only be called if the parser has an object codec assigned; this is true for parsers constructed by MappingJsonFactory but not for JsonFactory (unless its setCodec method has been explicitly called).

This method may advance the event stream, for structured types the current event will be the closing end marker (END_ARRAY, END_OBJECT) of the bound structure. For non-structured Json types (and for JsonToken.VALUE_EMBEDDED_OBJECT) stream is not advanced.

Specified by:

readValueAs in class JsonParser

Throws:

IOException

JsonProcessingException

readValueAsTree

public final JsonNode readValueAsTree()
                               throws IOException,
                                      JsonProcessingException

Description copied from class: JsonParser

Method to deserialize Json content into equivalent "tree model", represented by root JsonNode of resulting model. For Json Arrays it will an array node (with child nodes), for objects object node (with child nodes), and for other types matching leaf node type

Specified by:

readValueAsTree in class JsonParser

Throws:

IOException

JsonProcessingException

_parseFieldName

protected final Name _parseFieldName(int i)
                              throws IOException,
                                     JsonParseException

Throws:

IOException

JsonParseException

parseMediumFieldName

protected Name parseMediumFieldName(int q1,
                                    int q2)
                             throws IOException,
                                    JsonParseException

Throws:

IOException

JsonParseException

parseLongFieldName

protected Name parseLongFieldName(int q)
                           throws IOException,
                                  JsonParseException

Throws:

IOException

JsonParseException

slowParseFieldName

protected Name slowParseFieldName()
                           throws IOException,
                                  JsonParseException

Method called when not even first 8 bytes are guaranteed to come consequtively. Happens rarely, so this is offlined; plus we'll also do full checks for escaping etc.

Throws:

IOException

JsonParseException

parseEscapedFieldName

protected Name parseEscapedFieldName(int[] quads,
                                     int qlen,
                                     int currQuad,
                                     int ch,
                                     int currQuadBytes)
                              throws IOException,
                                     JsonParseException

Slower parsing method which is generally branched to when an escape sequence is detected (or alternatively for long names, or ones crossing input buffer boundary). In any case, needs to be able to handle more exceptional cases, gets slower, and hance is offlined to a separate method.

Throws:

IOException

JsonParseException

_handleUnusualFieldName

protected final Name _handleUnusualFieldName(int ch)
                                      throws IOException,
                                             JsonParseException

Method called when we see non-white space character other than double quote, when expecting a field name. In standard mode will just throw an expection; but in non-standard modes may be able to parse name.

Throws:

IOException

JsonParseException

_finishString

protected void _finishString()
                      throws IOException,
                             JsonParseException

Specified by:

_finishString in class JsonParserBase

Throws:

IOException

JsonParseException

_skipString

protected void _skipString()
                    throws IOException,
                           JsonParseException

Method called to skim through rest of unparsed String value, if it is not needed. This can be done bit faster if contents need not be stored for future access.

Throws:

IOException

JsonParseException

_matchToken

protected void _matchToken(JsonToken token)
                    throws IOException,
                           JsonParseException

Throws:

IOException

JsonParseException

_decodeEscaped

protected final char _decodeEscaped()
                             throws IOException,
                                    JsonParseException

Throws:

IOException

JsonParseException

_decodeCharForError

protected int _decodeCharForError(int firstByte)
                           throws IOException,
                                  JsonParseException

Throws:

IOException

JsonParseException

_skipCR

protected final void _skipCR()
                      throws IOException

We actually need to check the character value here (to see if we have \n following \r).

Throws:

IOException

_skipLF

protected final void _skipLF()
                      throws IOException

Throws:

IOException

_reportInvalidChar

protected void _reportInvalidChar(int c)
                           throws JsonParseException

Throws:

JsonParseException

_reportInvalidInitial

protected void _reportInvalidInitial(int mask)
                              throws JsonParseException

Throws:

JsonParseException

_reportInvalidOther

protected void _reportInvalidOther(int mask)
                            throws JsonParseException

Throws:

JsonParseException

_reportInvalidOther

protected void _reportInvalidOther(int mask,
                                   int ptr)
                            throws JsonParseException

Throws:

JsonParseException

growArrayBy

public static int[] growArrayBy(int[] arr,
                                int more)

_decodeBase64

protected byte[] _decodeBase64(Base64Variant b64variant)
                        throws IOException,
                               JsonParseException

Specified by:

_decodeBase64 in class JsonParserBase

Throws:

IOException

JsonParseException

reportInvalidChar

protected IllegalArgumentException reportInvalidChar(Base64Variant b64variant,
                                                     int ch,
                                                     int bindex)
                                              throws IllegalArgumentException

Throws:

IllegalArgumentException

reportInvalidChar

protected IllegalArgumentException reportInvalidChar(Base64Variant b64variant,
                                                     int ch,
                                                     int bindex,
                                                     String msg)
                                              throws IllegalArgumentException

Parameters:

bindex - Relative index within base64 character unit; between 0 and 3 (as unit has exactly 4 characters)

Throws:

IllegalArgumentException