org.aksw.jena_sparql_api.stmt.SparqlParserConfig Maven / Gradle / Ivy

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package org.aksw.jena_sparql_api.stmt;

import org.apache.jena.query.Syntax;
import org.apache.jena.riot.system.IRIResolver;
import org.apache.jena.shared.PrefixMapping;
import org.apache.jena.sparql.core.Prologue;

public class SparqlParserConfig
    implements Cloneable
{
    protected Syntax syntax;
    protected Prologue prologue;
    // It may be better to support prefix optimization as a post processor
//    protected boolean optimizePrefixes;

    public SparqlParserConfig clone() {
        SparqlParserConfig result = new SparqlParserConfig(syntax, prologue.copy());
        return result;
    }

    public SparqlParserConfig() {
        super();
    }

    public SparqlParserConfig(Syntax syntax, Prologue prologue) {
        super();
        this.syntax = syntax;
        this.prologue = prologue;
    }

    public Syntax getSyntax() {
        return syntax;
    }

    public SparqlParserConfig setSyntax(Syntax syntax) {
        this.syntax = syntax;
        return this;
    }

    public Prologue getPrologue() {
        return prologue;
    }

    public SparqlParserConfig setPrologue(Prologue prologue) {
        this.prologue = prologue;
        return this;
    }

    public SparqlParserConfig setPrefixMapping(PrefixMapping pm) {
        if(prologue == null) {
            prologue = new Prologue(pm, IRIResolver.createNoResolve());
        } else {
            prologue.setPrefixMapping(pm);
        }
        return this;
    }

//    public SparqlParserConfig setBaseURI() {
//
//    }

    public PrefixMapping getPrefixMapping() {
        PrefixMapping result = prologue == null ? null : prologue.getPrefixMapping();
        return result;
    }

    public static SparqlParserConfig newInstance() {
        SparqlParserConfig result = new SparqlParserConfig();
        return result;
    }

//	public boolean optimizePrefixes() {
//		return optimizePrefixes;
//	}
//
//	public SparqlParserConfig optimizePrefixes(boolean optimizePrefixes) {
//		this.optimizePrefixes = optimizePrefixes;
//		return this;
//	}

	public SparqlParserConfig applyDefaults() {
        if(syntax == null) {
            syntax = Syntax.syntaxARQ;
        }

        if(prologue == null) {
            prologue = new Prologue(PrefixMapping.Extended);
        }

        if(prologue.getResolver() == null) {
            prologue.setResolver(IRIResolver.createNoResolve());
        }

        return this;
    }

}