com.bigdata.rdf.sail.sparql

Class PrefixDeclProcessor

java.lang.Object

com.bigdata.rdf.sail.sparql.PrefixDeclProcessor

public class PrefixDeclProcessor
extends Object

Processes the prefix declarations in a SPARQL query model.

Author:

Arjohn Kampman

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	PrefixDeclProcessor.Options

Field Summary

Fields

Modifier and Type	Field and Description
static Map<String,String>	defaultDecls

Constructor Summary

Constructors

Constructor and Description
PrefixDeclProcessor()

Method Summary

Methods

Modifier and Type	Method and Description
static Map<String,String>	process(ASTOperationContainer qc) Processes prefix declarations in queries.
static void	processAdditionalDecls() Static helper method to process the PrefixDeclProcessor.Options.ADDTIONAL_DECLS_FILE property if present and add the decls.

Methods inherited from class java.lang.Object

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

Field Detail

defaultDecls

public static final Map<String,String> defaultDecls

Constructor Detail

PrefixDeclProcessor

public PrefixDeclProcessor()

Method Detail

process

public static Map<String,String> process(ASTOperationContainer qc)
                                  throws org.openrdf.query.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.

Returns:

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

Throws:

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

processAdditionalDecls

public static void processAdditionalDecls()

Static helper method to process the PrefixDeclProcessor.Options.ADDTIONAL_DECLS_FILE property if present and add the decls. It ignores IO errors, etc. and provides a warning. BLZG-1773