Package com.complexible.common.rdf.query

Class SPARQLUtil

java.lang.Object

com.complexible.common.rdf.query.SPARQLUtil

public final class SPARQLUtil
extends Object

Collection of utility methods for working with SPARQL strings

Since:

1.2

Version:

6.0

Author:

Evren Sirin, Michael Grove, Edgar Rodriguez-Diaz

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	SPARQLUtil.QueryType

Field Summary

Fields

Modifier and Type	Field	Description
static final long	NO_LIMIT
static final long	NO_OFFSET
static final String	PLAN_HEADER

Method Summary

Modifier and Type	Method	Description
static String	buildRemoveQuery(Statement theStmtPattern)	Builds a SPARQL Update remove query based on a Statement Pattern
static Iterable<Namespace>	getNamespaces(String theQuery)	Creates an iterable of namespaces by parsing the prefix declarations in a query string but does so lazily.
static SPARQLUtil.QueryType	getType(String theQuery)	Return the type of SPARQL query contained in the string.
static boolean	isWriteOnlyUpdate(String theQuery)	Checks if the given SPARQL query is a write-only update operation (no read/WHERE component).
static String	removeSPARQLQueryProlog(String theQuery)	Forked from Sesame's QueryParserUtil#removeSPARQLQueryProlog to use pre-compiled Patterns.
static String	toQuery(String theQuery, String reasoningSchema, long theOffset, long theLimit, Map<String,Value> theBindings, Dataset theDataset)

Methods inherited from class java.lang.Object

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

Field Details

PLAN_HEADER

public static final String PLAN_HEADER

See Also:

• Constant Field Values

NO_LIMIT

public static final long NO_LIMIT

See Also:

• Constant Field Values

NO_OFFSET

public static final long NO_OFFSET

See Also:

• Constant Field Values

Method Details

getType

public static SPARQLUtil.QueryType getType(String theQuery)

Return the type of SPARQL query contained in the string. This is based on the code from the Sesame QueryParserUtil class.

Parameters:

theQuery - the query string

Returns:

the type of the SPARQL query in the string

isWriteOnlyUpdate

public static boolean isWriteOnlyUpdate(String theQuery)

Checks if the given SPARQL query is a write-only update operation (no read/WHERE component). Write-only operations include: INSERT DATA, DELETE DATA, LOAD, CLEAR, DROP, CREATE, COPY, MOVE, ADD.

Parameters:

theQuery - the query string

Returns:

true if the query is a write-only update with no read component, false otherwise

toQuery

@Nonnull
public static String toQuery(@Nonnull
 String theQuery,
 String reasoningSchema,
 long theOffset,
 long theLimit,
 @Nonnull
 Map<String,Value> theBindings,
 @Nonnull
 Dataset theDataset)

removeSPARQLQueryProlog

public static String removeSPARQLQueryProlog(String theQuery)

Forked from Sesame's QueryParserUtil#removeSPARQLQueryProlog to use pre-compiled Patterns.

Parameters:

theQuery - the original query string

Returns:

the query string w/o the prolog

getNamespaces

public static Iterable<Namespace> getNamespaces(String theQuery)

Creates an iterable of namespaces by parsing the prefix declarations in a query string but does so lazily.

buildRemoveQuery

public static String buildRemoveQuery(Statement theStmtPattern)

Builds a SPARQL Update remove query based on a Statement Pattern

Parameters:

theStmtPattern - the Statement SPOC pattern to fill up the SPARQL query

Returns:

the Query string