org.codehaus.jackson.impl
Class ReaderBasedParser

java.lang.Object
  org.codehaus.jackson.JsonParser
      org.codehaus.jackson.impl.JsonParserBase
          org.codehaus.jackson.impl.JsonNumericParserBase
              org.codehaus.jackson.impl.ReaderBasedParserBase
                  org.codehaus.jackson.impl.ReaderBasedNumericParser
                      org.codehaus.jackson.impl.ReaderBasedParser

All Implemented Interfaces:

Closeable

public final class ReaderBasedParser
extends ReaderBasedNumericParser

This is a concrete implementation of JsonParser, which is based on a Reader to handle low-level character conversion tasks.

Nested Class Summary

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

JsonParser.Feature, JsonParser.NumberType

Field Summary

protected CharsToNameCanonicalizer

_symbols

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

_inputBuffer, _reader

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

ReaderBasedParser(IOContext ioCtxt, int features, Reader r, ObjectCodec codec, CharsToNameCanonicalizer st)

Method Summary

protected byte[]	_decodeBase64(Base64Variant b64variant)
protected char	_decodeEscaped()
protected void	_finishString()
protected void	_finishString2()
protected String	_handleUnusualFieldName(int i) Method called when we see non-white space character other than double quote, when expecting a field name.
protected void	_matchToken(JsonToken token) Method called to much one of literal tokens we may expect
protected String	_parseFieldName(int i)
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.
JsonToken	nextToken() Main iteration method, which will advance stream enough to determine type of the next token, if any.
<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, char ch, int bindex)
protected IllegalArgumentException	reportInvalidChar(Base64Variant b64variant, char ch, int bindex, String msg)

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

parseNumberText

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

_closeInput, _releaseBuffers, getNextChar, 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 CharsToNameCanonicalizer _symbols

Constructor Detail

ReaderBasedParser

public ReaderBasedParser(IOContext ioCtxt,
                         int features,
                         Reader r,
                         ObjectCodec codec,
                         CharsToNameCanonicalizer st)

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 String _parseFieldName(int i)
                                throws IOException,
                                       JsonParseException

Throws:

IOException

JsonParseException

_handleUnusualFieldName

protected final String _handleUnusualFieldName(int i)
                                        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

Since:

1.2

_finishString

protected void _finishString()
                      throws IOException,
                             JsonParseException

Specified by:

_finishString in class JsonParserBase

Throws:

IOException

JsonParseException

_finishString2

protected void _finishString2()
                       throws IOException,
                              JsonParseException

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

Method called to much one of literal tokens we may expect

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

_decodeEscaped

protected final char _decodeEscaped()
                             throws IOException,
                                    JsonParseException

Throws:

IOException

JsonParseException

_decodeBase64

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

Specified by:

_decodeBase64 in class JsonParserBase

Throws:

IOException

JsonParseException

reportInvalidChar

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

Throws:

IllegalArgumentException

reportInvalidChar

protected IllegalArgumentException reportInvalidChar(Base64Variant b64variant,
                                                     char 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