Package org.eclipse.rdf4j.query.parser.sparql

Class PrefixDeclProcessor

java.lang.Object

org.eclipse.rdf4j.query.parser.sparql.PrefixDeclProcessor

@InternalUseOnly
public class PrefixDeclProcessor
extends Object

Processes the prefix declarations in a SPARQL query model.

Author:

Arjohn Kampman

Constructor Summary

Constructors

Constructor	Description
PrefixDeclProcessor()

Method Summary

Modifier and Type	Method	Description
static Map<String,String>	process(org.eclipse.rdf4j.query.parser.sparql.ast.ASTOperationContainer qc, Map<String,String> customDefaultPrefixes)	Processes prefix declarations in queries.

Methods inherited from class java.lang.Object

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

Constructor Details

PrefixDeclProcessor

public PrefixDeclProcessor()

Method Details

process

public static Map<String,String> process(org.eclipse.rdf4j.query.parser.sparql.ast.ASTOperationContainer qc,
 Map<String,String> customDefaultPrefixes)
                                  throws MalformedQueryException

Processes prefix declarations in queries. This method collects all prefixes that are declared in the supplied query, verifies that prefixes are not redefined and replaces any ASTQName nodes in the query with equivalent ASTIRI nodes.

Parameters:

qc - The query that needs to be processed.

customDefaultPrefixes - Custom prefixes to add, will override SPARQL default prefixes. can't be null.

Returns:

A map containing the prefixes that are declared in the query (key) and the namespace they map to (value).

Throws:

MalformedQueryException - If the query contains redefined prefixes or qnames that use undefined prefixes.