public static void main(String[] a) throws Exception {
System.out.println("ARQ Example: " + Utils.classShortName(ExLucene3.class));
System.out.println("ARQ: " + ARQ.VERSION);
System.out.println();
Model model = ModelFactory.createDefaultModel();
IndexLARQ index = buildTitleIndex(model, "src/test/resources/LARQ/data-1.ttl");
// Search for string
String searchString = "+document";
// This time, find documents with a matching DC title.
String queryString =
StrUtils.strjoin(
"\n",
"PREFIX pf: <http://jena.hpl.hp.com/ARQ/property#>",
"PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>",
"PREFIX dc: <http://purl.org/dc/elements/1.1/>",
"PREFIX : <http://example/>",
"SELECT ?title {",
" ?title pf:textMatch '" + searchString + "'.",
"}");
// Two of three documents should match.
ExLucene1.performQuery(model, index, queryString);
index.close();
}
private void executeForm(HttpAction action) {
String requestStr = action.request.getParameter(paramUpdate);
if (requestStr == null) requestStr = action.request.getParameter(paramRequest);
if (action.verbose) action.log.info(format("[%d] Form update = \n%s", action.id, requestStr));
// A little ugly because we are taking a copy of the string, but hopefully shouldn't be too big
// if we are in this code-path
// If we didn't want this additional copy, we could make the parser take a Reader in addition to
// an InputStream
byte[] b = StrUtils.asUTF8bytes(requestStr);
ByteArrayInputStream input = new ByteArrayInputStream(b);
requestStr = null; // free it early at least
execute(action, input);
ServletOps.successPage(action, "Update succeeded");
}
public void print(PrintContext p) {
Variable asVar = getAs();
if (asVar != null) {
p.print("(");
}
Resource aggType = getResource(RDF.type);
String aggName = Aggregations.getName(aggType);
p.printKeyword(aggName);
p.print("(");
if (isDistinct()) {
p.print("DISTINCT ");
}
Statement exprS = getProperty(SP.expression);
if (exprS != null && exprS.getObject().isResource()) {
Resource r = exprS.getResource();
RDFNode expr = SPINFactory.asExpression(r);
if (expr instanceof Printable) {
((Printable) expr).print(p);
} else {
p.printURIResource(r);
}
} else {
p.print("*");
}
String separator = getString(SP.separator);
if (separator != null) {
p.print("; ");
p.printKeyword("SEPARATOR");
p.print("='" + StrUtils.escapeString(separator) + "'");
}
if (asVar != null) {
p.print(") ");
p.printKeyword("AS");
p.print(" ");
p.print(asVar.toString());
}
p.print(")");
}
@Override
public EntityDefinition open(Assembler a, Resource root, Mode mode) {
String prologue = "PREFIX : <" + NS + "> PREFIX list: <http://jena.apache.org/ARQ/list#> ";
Model model = root.getModel();
String qs1 =
StrUtils.strjoinNL(
prologue,
"SELECT * {",
" ?eMap :entityField ?entityField ;",
" :map ?map ;",
" :defaultField ?dftField .",
" OPTIONAL {",
" ?eMap :graphField ?graphField",
" }",
" OPTIONAL {",
" ?eMap :langField ?langField",
" }",
" OPTIONAL {",
" ?eMap :uidField ?uidField",
" }",
"}");
ParameterizedSparqlString pss = new ParameterizedSparqlString(qs1);
pss.setIri("eMap", root.getURI());
Query query1 = QueryFactory.create(pss.toString());
QueryExecution qexec1 = QueryExecutionFactory.create(query1, model);
ResultSet rs1 = qexec1.execSelect();
List<QuerySolution> results = ResultSetFormatter.toList(rs1);
if (results.size() == 0) {
Log.warn(this, "Failed to find a valid EntityMap for : " + root);
throw new TextIndexException("Failed to find a valid EntityMap for : " + root);
}
if (results.size() != 1) {
Log.warn(this, "Multiple matches for EntityMap for : " + root);
throw new TextIndexException("Multiple matches for EntityMap for : " + root);
}
QuerySolution qsol1 = results.get(0);
String entityField = qsol1.getLiteral("entityField").getLexicalForm();
String graphField =
qsol1.contains("graphField") ? qsol1.getLiteral("graphField").getLexicalForm() : null;
String langField =
qsol1.contains("langField") ? qsol1.getLiteral("langField").getLexicalForm() : null;
String defaultField =
qsol1.contains("dftField") ? qsol1.getLiteral("dftField").getLexicalForm() : null;
String uniqueIdField =
qsol1.contains("uidField") ? qsol1.getLiteral("uidField").getLexicalForm() : null;
Multimap<String, Node> mapDefs = HashMultimap.create();
Map<String, Analyzer> analyzerDefs = new HashMap<>();
Statement listStmt = root.getProperty(TextVocab.pMap);
while (listStmt != null) {
RDFNode n = listStmt.getObject();
if (!n.isResource()) {
throw new TextIndexException("Text list node is not a resource : " + n);
}
Resource listResource = n.asResource();
if (listResource.equals(RDF.nil)) {
break; // end of the list
}
Statement listEntryStmt = listResource.getProperty(RDF.first);
if (listEntryStmt == null) {
throw new TextIndexException("Text map list is not well formed. No rdf:first property");
}
n = listEntryStmt.getObject();
if (!n.isResource()) {
throw new TextIndexException("Text map list entry is not a resource : " + n);
}
Resource listEntry = n.asResource();
Statement fieldStatement = listEntry.getProperty(TextVocab.pField);
if (fieldStatement == null) {
throw new TextIndexException("Text map entry has no field property");
}
n = fieldStatement.getObject();
if (!n.isLiteral()) {
throw new TextIndexException("Text map entry field property has no literal value : " + n);
}
String field = n.asLiteral().getLexicalForm();
Statement predicateStatement = listEntry.getProperty(TextVocab.pPredicate);
if (predicateStatement == null) {
throw new TextIndexException("Text map entry has no predicate property");
}
n = predicateStatement.getObject();
if (!n.isURIResource()) {
throw new TextIndexException(
"Text map entry predicate property has non resource value : " + n);
}
mapDefs.put(field, n.asNode());
Statement analyzerStatement = listEntry.getProperty(TextVocab.pAnalyzer);
if (analyzerStatement != null) {
n = analyzerStatement.getObject();
if (!n.isResource()) {
throw new TextIndexException("Text map entry analyzer property is not a resource : " + n);
}
Resource analyzerResource = n.asResource();
Analyzer analyzer = (Analyzer) a.open(analyzerResource);
analyzerDefs.put(field, analyzer);
}
// move on to the next element in the list
listStmt = listResource.getProperty(RDF.rest);
}
// Primary field/predicate
if (defaultField != null) {
Collection<Node> c = mapDefs.get(defaultField);
if (c.isEmpty())
throw new TextIndexException("No definition of primary field '" + defaultField + "'");
}
EntityDefinition docDef = new EntityDefinition(entityField, defaultField);
docDef.setGraphField(graphField);
docDef.setLangField(langField);
docDef.setUidField(uniqueIdField);
for (String f : mapDefs.keys()) {
for (Node p : mapDefs.get(f)) docDef.set(f, p);
}
for (String f : analyzerDefs.keySet()) {
docDef.setAnalyzer(f, analyzerDefs.get(f));
}
return docDef;
}
