Class AbstractSPARQLJSONParser

java.lang.Object

org.eclipse.rdf4j.query.resultio.AbstractQueryResultParser

org.eclipse.rdf4j.query.resultio.sparqljson.AbstractSPARQLJSONParser

All Implemented Interfaces:

QueryResultParser

Direct Known Subclasses:

SPARQLBooleanJSONParser, SPARQLJSONParserBase, SPARQLResultsJSONParser

public abstract class AbstractSPARQLJSONParser
extends AbstractQueryResultParser

Abstract base class for SPARQL Results JSON Parsers. Provides a common implementation of both boolean and tuple parsing.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	BINDINGS
static final String	BNODE
static final String	BOOLEAN
static final String	DATATYPE
private static final String	DISTINCT	Backwards compatibility with very early version of original SPARQL spec.
static final String	HEAD
static final String	LINK
static final String	LITERAL
private final org.slf4j.Logger	logger
private static final String	ORDERED	Backwards compatibility with very early version of original SPARQL spec.
static final String	RESULTS
static final String	TYPE
static final String	TYPED_LITERAL
static final String	URI
static final String	VALUE
static final String	VARS
static final String	XMLLANG

Fields inherited from class AbstractQueryResultParser

handler, valueFactory

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractSPARQLJSONParser()
protected	AbstractSPARQLJSONParser(ValueFactory valueFactory)

Method Summary

Modifier and Type	Method	Description
protected boolean	checkTripleType(com.fasterxml.jackson.core.JsonParser jp, String type)
private com.fasterxml.jackson.core.JsonFactory	configureNewJsonFactory()	Get an instance of JsonFactory configured using the settings from AbstractQueryResultParser.getParserConfig().
Collection<RioSetting<?>>	getSupportedSettings()
void	parseQueryResult(InputStream in)	Parse the query results out of the given InputStream into the handler setup using QueryResultParser.setQueryResultHandler(QueryResultHandler).
protected boolean	parseQueryResultInternal(InputStream in, boolean attemptParseBoolean, boolean attemptParseTuple)
private Triple	parseStardogTripleValue(com.fasterxml.jackson.core.JsonParser jp, String fieldName)
protected Triple	parseTripleValue(com.fasterxml.jackson.core.JsonParser jp, String fieldName)
protected Value	parseValue(com.fasterxml.jackson.core.JsonParser jp, String bindingStr)
private Value	parseValue(String type, String value, String language, String datatype)	Parse a value out of the elements for a binding.

Methods inherited from class AbstractQueryResultParser

getParseErrorListener, getParseLocationListener, getParserConfig, set, setParseErrorListener, setParseLocationListener, setParserConfig, setQueryResultHandler, setValueFactory

Methods inherited from class Object

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

Methods inherited from interface QueryResultParser

getQueryResultFormat

Field Details

logger

private final org.slf4j.Logger logger

HEAD

public static final String HEAD

See Also:

• Constant Field Values

LINK

public static final String LINK

See Also:

• Constant Field Values

VARS

public static final String VARS

See Also:

• Constant Field Values

BOOLEAN

public static final String BOOLEAN

See Also:

• Constant Field Values

RESULTS

public static final String RESULTS

See Also:

• Constant Field Values

BINDINGS

public static final String BINDINGS

See Also:

• Constant Field Values

TYPE

public static final String TYPE

See Also:

• Constant Field Values

VALUE

public static final String VALUE

See Also:

• Constant Field Values

XMLLANG

public static final String XMLLANG

See Also:

• Constant Field Values

DATATYPE

public static final String DATATYPE

See Also:

• Constant Field Values

LITERAL

public static final String LITERAL

See Also:

• Constant Field Values

TYPED_LITERAL

public static final String TYPED_LITERAL

See Also:

• Constant Field Values

BNODE

public static final String BNODE

See Also:

• Constant Field Values

URI

public static final String URI

See Also:

• Constant Field Values

DISTINCT

private static final String DISTINCT

Backwards compatibility with very early version of original SPARQL spec.

See Also:

• Constant Field Values

ORDERED

private static final String ORDERED

Backwards compatibility with very early version of original SPARQL spec.

See Also:

• Constant Field Values

Constructor Details

AbstractSPARQLJSONParser

protected AbstractSPARQLJSONParser()

AbstractSPARQLJSONParser

protected AbstractSPARQLJSONParser(ValueFactory valueFactory)

Method Details

parseQueryResult

public void parseQueryResult(InputStream in)
                      throws IOException,
QueryResultParseException,
QueryResultHandlerException

Description copied from interface: QueryResultParser

Parse the query results out of the given InputStream into the handler setup using QueryResultParser.setQueryResultHandler(QueryResultHandler).

Parameters:

in - The InputStream to parse the results from.

Throws:

IOException - If there is an exception from the InputStream.

QueryResultParseException - If the query results are not parsable by this parser.

QueryResultHandlerException - If the QueryResultHandler set in QueryResultParser.setQueryResultHandler(QueryResultHandler) throws an exception.

parseQueryResultInternal

protected boolean parseQueryResultInternal(InputStream in,
 boolean attemptParseBoolean,
 boolean attemptParseTuple)
                                    throws IOException,
QueryResultParseException,
QueryResultHandlerException

Throws:

IOException

QueryResultParseException

QueryResultHandlerException

parseValue

protected Value parseValue(com.fasterxml.jackson.core.JsonParser jp,
 String bindingStr)
                    throws IOException

Throws:

IOException

parseStardogTripleValue

private Triple parseStardogTripleValue(com.fasterxml.jackson.core.JsonParser jp,
 String fieldName)
                                throws IOException

Throws:

IOException

parseTripleValue

protected Triple parseTripleValue(com.fasterxml.jackson.core.JsonParser jp,
 String fieldName)
                           throws IOException

Throws:

IOException

checkTripleType

protected boolean checkTripleType(com.fasterxml.jackson.core.JsonParser jp,
 String type)

parseValue

private Value parseValue(String type,
 String value,
 String language,
 String datatype)

Parse a value out of the elements for a binding.

Parameters:

type - LITERAL, TYPED_LITERAL, BNODE or URI

value - actual value text

language - language tag, if applicable

datatype - datatype tag, if applicable

Returns:

the value corresponding to the given parameters

getSupportedSettings

public Collection<RioSetting<?>> getSupportedSettings()

Specified by:

getSupportedSettings in interface QueryResultParser

Overrides:

getSupportedSettings in class AbstractQueryResultParser

Returns:

A collection of RioSettings that are supported by this QueryResultParser.

configureNewJsonFactory

private com.fasterxml.jackson.core.JsonFactory configureNewJsonFactory()

Get an instance of JsonFactory configured using the settings from AbstractQueryResultParser.getParserConfig().

Returns:

A newly configured JsonFactory based on the currently enabled settings