com.fasterxml.jackson.dataformat.xml.deser

Class FromXmlParser

java.lang.Object

com.fasterxml.jackson.core.JsonParser

com.fasterxml.jackson.core.base.ParserMinimalBase

com.fasterxml.jackson.dataformat.xml.deser.FromXmlParser

All Implemented Interfaces:

com.fasterxml.jackson.core.Versioned, Closeable, AutoCloseable

public class FromXmlParser
extends com.fasterxml.jackson.core.base.ParserMinimalBase

JsonParser implementation that exposes XML structure as set of JSON events that can be used for data binding.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FromXmlParser.Feature Enumeration that defines all togglable features for XML parsers

Nested classes/interfaces inherited from class com.fasterxml.jackson.core.JsonParser

com.fasterxml.jackson.core.JsonParser.NumberType

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	_binaryValue We will hold on to decoded binary data, for duration of current event, so that multiple calls to getBinaryValue(com.fasterxml.jackson.core.Base64Variant) will not need to decode data more than once.
protected com.fasterxml.jackson.core.util.ByteArrayBuilder	_byteArrayBuilder ByteArrayBuilder is needed if 'getBinaryValue' is called.
protected String	_cfgNameForTextElement In cases where a start element has both attributes and non-empty textual value, we have to create a bogus property; we will use this as the property name.
protected boolean	_closed Flag that indicates whether parser is closed or not.
protected String	_currText
protected com.fasterxml.jackson.core.io.IOContext	_ioContext
protected boolean	_mayBeLeaf We need special handling to keep track of whether a value may be exposed as simple leaf value.
protected Set<String>	_namesToWrap
protected com.fasterxml.jackson.core.JsonToken	_nextToken
protected com.fasterxml.jackson.core.ObjectCodec	_objectCodec
protected XmlReadContext	_parsingContext Information about parser context, context in which the next token is to be parsed (root, array, object).
protected int	_xmlFeatures Bit flag composed of bits that indicate which FromXmlParser.Features are enabled.
protected XmlTokenStream	_xmlTokens
static String	DEFAULT_UNNAMED_TEXT_PROPERTY The default name placeholder for XML text segments is empty String ("").

Fields inherited from class com.fasterxml.jackson.core.base.ParserMinimalBase

_currToken, _lastClearedToken, INT_BACKSLASH, INT_COLON, INT_COMMA, INT_CR, INT_e, INT_E, INT_HASH, INT_LBRACKET, INT_LCURLY, INT_LF, INT_PERIOD, INT_QUOTE, INT_RBRACKET, INT_RCURLY, INT_SLASH, INT_SPACE, INT_TAB

Fields inherited from class com.fasterxml.jackson.core.JsonParser

_features

Constructor Summary

Constructors

Constructor and Description
FromXmlParser(com.fasterxml.jackson.core.io.IOContext ctxt, int genericParserFeatures, int xmlFeatures, com.fasterxml.jackson.core.ObjectCodec codec, XMLStreamReader xmlReader)

Method Summary

Methods

Modifier and Type	Method and Description
protected byte[]	_decodeBase64(com.fasterxml.jackson.core.Base64Variant b64variant)
protected com.fasterxml.jackson.core.util.ByteArrayBuilder	_getByteArrayBuilder()
protected void	_handleEOF() Method called when an EOF is encountered between tokens.
protected boolean	_isEmpty(String str)
protected void	_releaseBuffers() Method called to release internal buffers owned by the base parser.
void	addVirtualWrapping(Set<String> namesToWrap) Method that may be called to indicate that specified names (only local parts retained currently: this may be changed in future) should be considered "auto-wrapping", meaning that they will be doubled to contain two opening elements, two matching closing elements.
void	close()
FromXmlParser	configure(FromXmlParser.Feature f, boolean state)
FromXmlParser	disable(FromXmlParser.Feature f)
FromXmlParser	enable(FromXmlParser.Feature f)
BigInteger	getBigIntegerValue()
byte[]	getBinaryValue(com.fasterxml.jackson.core.Base64Variant b64variant)
com.fasterxml.jackson.core.ObjectCodec	getCodec()
com.fasterxml.jackson.core.JsonLocation	getCurrentLocation() Method that returns location of the last processed character; usually for error reporting purposes
String	getCurrentName() Method that can be called to get the name associated with the current event.
BigDecimal	getDecimalValue()
double	getDoubleValue()
Object	getEmbeddedObject()
float	getFloatValue()
int	getIntValue()
long	getLongValue()
com.fasterxml.jackson.core.JsonParser.NumberType	getNumberType()
Number	getNumberValue()
XmlReadContext	getParsingContext()
XMLStreamReader	getStaxReader() Method that allows application direct access to underlying Stax XMLStreamWriter.
String	getText()
char[]	getTextCharacters()
int	getTextLength()
int	getTextOffset()
com.fasterxml.jackson.core.JsonLocation	getTokenLocation() Method that return the starting location of the current token; that is, position of the first character from input that starts the current token.
String	getValueAsString()
String	getValueAsString(String defValue)
boolean	hasTextCharacters() XML input actually would offer access to character arrays; but since we must coalesce things it cannot really be exposed.
boolean	isClosed()
boolean	isEnabled(FromXmlParser.Feature f)
boolean	isExpectedStartArrayToken() Since xml representation can not really distinguish between array and object starts (both are represented with elements), this method is overridden and taken to mean that expecation is that the current start element is to mean 'start array', instead of default of 'start object'.
String	nextTextValue() Method overridden to support more reliable deserialization of String collections.
com.fasterxml.jackson.core.JsonToken	nextToken()
void	overrideCurrentName(String name)
boolean	requiresCustomCodec() XML format does require support from custom ObjectCodec (that is, XmlMapper), so need to return true here.
void	setCodec(com.fasterxml.jackson.core.ObjectCodec c)
void	setXMLTextElementName(String name)
com.fasterxml.jackson.core.Version	version()

Methods inherited from class com.fasterxml.jackson.core.base.ParserMinimalBase

_ascii, _asciiBytes, _constructError, _decodeBase64, _getCharDesc, _handleUnrecognizedCharacterEscape, _hasTextualNull, _reportBase64EOF, _reportError, _reportInvalidBase64, _reportInvalidEOF, _reportInvalidEOF, _reportInvalidEOFInValue, _reportMissingRootWS, _reportUnexpectedChar, _throwInternal, _throwInvalidSpace, _throwUnquotedSpace, _wrapError, clearCurrentToken, getCurrentToken, getCurrentTokenId, getLastClearedToken, getValueAsBoolean, getValueAsDouble, getValueAsInt, getValueAsLong, hasCurrentToken, hasTokenId, isExpectedStartObjectToken, nextValue, skipChildren

Methods inherited from class com.fasterxml.jackson.core.JsonParser

_codec, _constructError, _reportUnsupportedOperation, canReadObjectId, canReadTypeId, canUseSchema, configure, disable, enable, getBinaryValue, getBooleanValue, getByteValue, getCurrentValue, getFeatureMask, getInputSource, getObjectId, getSchema, getShortValue, getTypeId, getValueAsBoolean, getValueAsDouble, getValueAsInt, getValueAsLong, isEnabled, nextBooleanValue, nextFieldName, nextFieldName, nextIntValue, nextLongValue, readBinaryValue, readBinaryValue, readValueAs, readValueAs, readValueAsTree, readValuesAs, readValuesAs, releaseBuffered, releaseBuffered, setCurrentValue, setFeatureMask, setSchema

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_UNNAMED_TEXT_PROPERTY

public static final String DEFAULT_UNNAMED_TEXT_PROPERTY

The default name placeholder for XML text segments is empty String ("").

See Also:

Constant Field Values

_cfgNameForTextElement

protected String _cfgNameForTextElement

In cases where a start element has both attributes and non-empty textual value, we have to create a bogus property; we will use this as the property name.

Name used for pseudo-property used for returning XML Text value (which does not have actual element name to use). Defaults to empty String, but may be changed for interoperability reasons: JAXB, for example, uses "value" as name.

Since:

2.1

_xmlFeatures

protected int _xmlFeatures

Bit flag composed of bits that indicate which FromXmlParser.Features are enabled.

_objectCodec

protected com.fasterxml.jackson.core.ObjectCodec _objectCodec

_closed

protected boolean _closed

Flag that indicates whether parser is closed or not. Gets set when parser is either closed by explicit call (close()) or when end-of-input is reached.

_ioContext

protected final com.fasterxml.jackson.core.io.IOContext _ioContext

_parsingContext

protected XmlReadContext _parsingContext

Information about parser context, context in which the next token is to be parsed (root, array, object).

_xmlTokens

protected final XmlTokenStream _xmlTokens

_mayBeLeaf

protected boolean _mayBeLeaf

We need special handling to keep track of whether a value may be exposed as simple leaf value.

_nextToken

protected com.fasterxml.jackson.core.JsonToken _nextToken

_currText

protected String _currText

_namesToWrap

protected Set<String> _namesToWrap

_byteArrayBuilder

protected com.fasterxml.jackson.core.util.ByteArrayBuilder _byteArrayBuilder

ByteArrayBuilder is needed if 'getBinaryValue' is called. If so, we better reuse it for remainder of content.

_binaryValue

protected byte[] _binaryValue

We will hold on to decoded binary data, for duration of current event, so that multiple calls to getBinaryValue(com.fasterxml.jackson.core.Base64Variant) will not need to decode data more than once.

Constructor Detail

FromXmlParser

public FromXmlParser(com.fasterxml.jackson.core.io.IOContext ctxt,
             int genericParserFeatures,
             int xmlFeatures,
             com.fasterxml.jackson.core.ObjectCodec codec,
             XMLStreamReader xmlReader)

Method Detail

getCodec

public com.fasterxml.jackson.core.ObjectCodec getCodec()

Specified by:

getCodec in class com.fasterxml.jackson.core.JsonParser

setCodec

public void setCodec(com.fasterxml.jackson.core.ObjectCodec c)

Specified by:

setCodec in class com.fasterxml.jackson.core.JsonParser

setXMLTextElementName

public void setXMLTextElementName(String name)

Since:

2.1

requiresCustomCodec

public boolean requiresCustomCodec()

XML format does require support from custom ObjectCodec (that is, XmlMapper), so need to return true here.

Overrides:

requiresCustomCodec in class com.fasterxml.jackson.core.JsonParser

Returns:

True since XML format does require support from codec

enable

public FromXmlParser enable(FromXmlParser.Feature f)

disable

public FromXmlParser disable(FromXmlParser.Feature f)

isEnabled

public final boolean isEnabled(FromXmlParser.Feature f)

configure

public FromXmlParser configure(FromXmlParser.Feature f,
                      boolean state)

getStaxReader

public XMLStreamReader getStaxReader()

Method that allows application direct access to underlying Stax XMLStreamWriter. Note that use of writer is discouraged, and may interfere with processing of this writer; however, occasionally it may be necessary.

Note: writer instance will always be of type XMLStreamWriter2 (including Typed Access API) so upcasts are safe.

addVirtualWrapping

public void addVirtualWrapping(Set<String> namesToWrap)

Method that may be called to indicate that specified names (only local parts retained currently: this may be changed in future) should be considered "auto-wrapping", meaning that they will be doubled to contain two opening elements, two matching closing elements. This is needed for supporting handling of so-called "unwrapped" array types, something XML mappings like JAXB often use.

NOTE: this method is considered part of internal implementation interface, and it is NOT guaranteed to remain unchanged between minor versions (it is however expected not to change in patch versions). So if you have to use it, be prepared for possible additional work.

Since:

2.1

getCurrentName

public String getCurrentName()
                      throws IOException,
                             com.fasterxml.jackson.core.JsonParseException

Method that can be called to get the name associated with the current event.

Specified by:

getCurrentName in class com.fasterxml.jackson.core.base.ParserMinimalBase

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

overrideCurrentName

public void overrideCurrentName(String name)

Specified by:

overrideCurrentName in class com.fasterxml.jackson.core.base.ParserMinimalBase

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in class com.fasterxml.jackson.core.base.ParserMinimalBase

Throws:

IOException

isClosed

public boolean isClosed()

Specified by:

isClosed in class com.fasterxml.jackson.core.base.ParserMinimalBase

getParsingContext

public XmlReadContext getParsingContext()

Specified by:

getParsingContext in class com.fasterxml.jackson.core.base.ParserMinimalBase

getTokenLocation

public com.fasterxml.jackson.core.JsonLocation getTokenLocation()

Method that return the starting location of the current token; that is, position of the first character from input that starts the current token.

Specified by:

getTokenLocation in class com.fasterxml.jackson.core.JsonParser

getCurrentLocation

public com.fasterxml.jackson.core.JsonLocation getCurrentLocation()

Method that returns location of the last processed character; usually for error reporting purposes

Specified by:

getCurrentLocation in class com.fasterxml.jackson.core.JsonParser

isExpectedStartArrayToken

public boolean isExpectedStartArrayToken()

Since xml representation can not really distinguish between array and object starts (both are represented with elements), this method is overridden and taken to mean that expecation is that the current start element is to mean 'start array', instead of default of 'start object'.

Overrides:

isExpectedStartArrayToken in class com.fasterxml.jackson.core.base.ParserMinimalBase

nextToken

public com.fasterxml.jackson.core.JsonToken nextToken()
                                               throws IOException

Specified by:

nextToken in class com.fasterxml.jackson.core.base.ParserMinimalBase

Throws:

IOException

nextTextValue

public String nextTextValue()
                     throws IOException

Method overridden to support more reliable deserialization of String collections.

Overrides:

nextTextValue in class com.fasterxml.jackson.core.JsonParser

Throws:

IOException

getText

public String getText()
               throws IOException,
                      com.fasterxml.jackson.core.JsonParseException

Specified by:

getText in class com.fasterxml.jackson.core.base.ParserMinimalBase

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getValueAsString

public final String getValueAsString()
                              throws IOException,
                                     com.fasterxml.jackson.core.JsonParseException

Overrides:

getValueAsString in class com.fasterxml.jackson.core.JsonParser

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getValueAsString

public String getValueAsString(String defValue)
                        throws IOException,
                               com.fasterxml.jackson.core.JsonParseException

Overrides:

getValueAsString in class com.fasterxml.jackson.core.base.ParserMinimalBase

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getTextCharacters

public char[] getTextCharacters()
                         throws IOException,
                                com.fasterxml.jackson.core.JsonParseException

Specified by:

getTextCharacters in class com.fasterxml.jackson.core.base.ParserMinimalBase

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getTextLength

public int getTextLength()
                  throws IOException,
                         com.fasterxml.jackson.core.JsonParseException

Specified by:

getTextLength in class com.fasterxml.jackson.core.base.ParserMinimalBase

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getTextOffset

public int getTextOffset()
                  throws IOException,
                         com.fasterxml.jackson.core.JsonParseException

Specified by:

getTextOffset in class com.fasterxml.jackson.core.base.ParserMinimalBase

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

hasTextCharacters

public boolean hasTextCharacters()

XML input actually would offer access to character arrays; but since we must coalesce things it cannot really be exposed.

Specified by:

hasTextCharacters in class com.fasterxml.jackson.core.base.ParserMinimalBase

getEmbeddedObject

public Object getEmbeddedObject()
                         throws IOException,
                                com.fasterxml.jackson.core.JsonParseException

Specified by:

getEmbeddedObject in class com.fasterxml.jackson.core.JsonParser

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getBinaryValue

public byte[] getBinaryValue(com.fasterxml.jackson.core.Base64Variant b64variant)
                      throws IOException,
                             com.fasterxml.jackson.core.JsonParseException

Specified by:

getBinaryValue in class com.fasterxml.jackson.core.base.ParserMinimalBase

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

_decodeBase64

protected byte[] _decodeBase64(com.fasterxml.jackson.core.Base64Variant b64variant)
                        throws IOException,
                               com.fasterxml.jackson.core.JsonParseException

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getBigIntegerValue

public BigInteger getBigIntegerValue()
                              throws IOException,
                                     com.fasterxml.jackson.core.JsonParseException

Specified by:

getBigIntegerValue in class com.fasterxml.jackson.core.JsonParser

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getDecimalValue

public BigDecimal getDecimalValue()
                           throws IOException,
                                  com.fasterxml.jackson.core.JsonParseException

Specified by:

getDecimalValue in class com.fasterxml.jackson.core.JsonParser

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getDoubleValue

public double getDoubleValue()
                      throws IOException,
                             com.fasterxml.jackson.core.JsonParseException

Specified by:

getDoubleValue in class com.fasterxml.jackson.core.JsonParser

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getFloatValue

public float getFloatValue()
                    throws IOException,
                           com.fasterxml.jackson.core.JsonParseException

Specified by:

getFloatValue in class com.fasterxml.jackson.core.JsonParser

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getIntValue

public int getIntValue()
                throws IOException,
                       com.fasterxml.jackson.core.JsonParseException

Specified by:

getIntValue in class com.fasterxml.jackson.core.JsonParser

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getLongValue

public long getLongValue()
                  throws IOException,
                         com.fasterxml.jackson.core.JsonParseException

Specified by:

getLongValue in class com.fasterxml.jackson.core.JsonParser

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getNumberType

public com.fasterxml.jackson.core.JsonParser.NumberType getNumberType()
                                                               throws IOException,
                                                                      com.fasterxml.jackson.core.JsonParseException

Specified by:

getNumberType in class com.fasterxml.jackson.core.JsonParser

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

getNumberValue

public Number getNumberValue()
                      throws IOException,
                             com.fasterxml.jackson.core.JsonParseException

Specified by:

getNumberValue in class com.fasterxml.jackson.core.JsonParser

Throws:

IOException

com.fasterxml.jackson.core.JsonParseException

_handleEOF

protected void _handleEOF()
                   throws com.fasterxml.jackson.core.JsonParseException

Method called when an EOF is encountered between tokens. If so, it may be a legitimate EOF, but only iff there is no open non-root context.

Specified by:

_handleEOF in class com.fasterxml.jackson.core.base.ParserMinimalBase

Throws:

com.fasterxml.jackson.core.JsonParseException

_releaseBuffers

protected void _releaseBuffers()
                        throws IOException

Method called to release internal buffers owned by the base parser.

Throws:

IOException

_getByteArrayBuilder

protected com.fasterxml.jackson.core.util.ByteArrayBuilder _getByteArrayBuilder()

_isEmpty

protected boolean _isEmpty(String str)

version

public com.fasterxml.jackson.core.Version version()

Specified by:

version in interface com.fasterxml.jackson.core.Versioned

Specified by:

version in class com.fasterxml.jackson.core.JsonParser