Examples with SPARQLQueryRenderer org.openrdf.queryrender.sparql.SPARQLQueryRenderer used on opensource projects

Example 6 with SPARQLQueryRenderer

use of org.openrdf.queryrender.sparql.SPARQLQueryRenderer in project incubator-rya by apache.

the class PcjMetadataRenderer method render.

/**
 * Pretty render the state of a PCJ.
 *
 * @param queryId - The ID of the query the metadata is from. (not null)
 * @param metadata - Metadata about one of the PCJs. (not null)
 * @return A pretty render of a PCJ's state.
 * @throws Exception The SPARQL within the metadata could not be parsed or
 *  it could not be rendered.
 */
public String render(final String queryId, final PcjMetadata metadata) throws Exception {
    checkNotNull(metadata);
    // Pretty format the cardinality.
    final String cardinality = NumberFormat.getInstance().format(metadata.getCardinality());
    // Pretty format and split the SPARQL query into lines.
    final SPARQLParser parser = new SPARQLParser();
    final SPARQLQueryRenderer renderer = new SPARQLQueryRenderer();
    final ParsedQuery pq = parser.parseQuery(metadata.getSparql(), null);
    final String prettySparql = renderer.render(pq);
    final String[] sparqlLines = StringUtils.split(prettySparql, '\n');
    // Split the variable orders into lines.
    final String[] varOrderLines = new String[metadata.getVarOrders().size()];
    int i = 0;
    for (final VariableOrder varOrder : metadata.getVarOrders()) {
        varOrderLines[i++] = varOrder.toString();
    }
    // Create the report.
    final Report.Builder builder = Report.builder();
    builder.appendItem(new ReportItem("Query ID", queryId));
    builder.appendItem(new ReportItem("Cardinality", cardinality));
    builder.appendItem(new ReportItem("Export Variable Orders", varOrderLines));
    builder.appendItem(new ReportItem("SPARQL", sparqlLines));
    return builder.build().toString();
}