Examples of org.openrdf.query.TupleQueryResultHandlerException

org.openrdf.query.TupleQueryResultHandlerException
An exception that can be thrown by an TupleQueryResultHandler when it encounters an unrecoverable error. If an exception is associated with the error then this exception can be wrapped in a TupleHandlerException and can later be retrieved from it when the TupleHandlerException is caught using the getCause().

                    public void startQueryResult(List<String> bindingNames) throws TupleQueryResultHandlerException {
                        subject = triples.getValueFactory().createURI(resource.stringValue());
                        try {
                            con = triples.getConnection();
                        } catch (RepositoryException e) {
                            throw new TupleQueryResultHandlerException("error while creating repository connection",e);
                        }
                    }


                    @Override
                    public void endQueryResult() throws TupleQueryResultHandlerException   {
                        try {
                            con.commit();
                            con.close();
                        } catch (RepositoryException e) {
                            throw new TupleQueryResultHandlerException("error while closing repository connection",e);
                        }
                    }


                    @Override
                    public void handleSolution(BindingSet bindingSet) throws TupleQueryResultHandlerException {


                        try {
                            Value predicate = bindingSet.getValue("p");
                            Value object    = bindingSet.getValue("o");


                            if(predicate instanceof URI) {
                                con.add(triples.getValueFactory().createStatement(subject,(URI)predicate,object));
                            } else {
                                log.error("ignoring binding as predicate {} is not a URI",predicate);
                            }
                        } catch (RepositoryException e) {
                            throw new TupleQueryResultHandlerException("error while adding triple to repository connection",e);
                        }
                    }
                },
                triples.getValueFactory());

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        this.vars = vars;
        try {
            templatingService.process(SPARQLResultsHTMLWriter.class, START_TEMPLATE, data, new OutputStreamWriter(out));
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            throw new TupleQueryResultHandlerException(e);
        }
  }

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        data.put("result", result);
        try {
            templatingService.process(SPARQLResultsHTMLWriter.class, RESULT_TEMPLATE, data, new OutputStreamWriter(out));
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            throw new TupleQueryResultHandlerException(e);
        }
  }

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    Map<String, Object> data = new HashMap<String, Object>();
        try {            
            templatingService.process(SPARQLResultsHTMLWriter.class, END_TEMPLATE, data, new OutputStreamWriter(out));
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            throw new TupleQueryResultHandlerException(e);
        }
  }

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            openArray();


            firstTupleWritten = false;
        }
        catch (IOException e) {
            throw new TupleQueryResultHandlerException(e);
        }
    }

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            closeBraces(); // results braces
            closeBraces(); // root braces
            writer.flush();
        }
        catch (IOException e) {
            throw new TupleQueryResultHandlerException(e);
        }
    }

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            closeBraces(); // end solution


            writer.flush();
        }
        catch (IOException e) {
            throw new TupleQueryResultHandlerException(e);
        }
    }

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            writer.write(", ");
            writeKeyValue("value", lit.getLabel());
        }
        else {
            throw new TupleQueryResultHandlerException("Unknown Value object type: " + value.getClass());
        }


        writer.write(" }");
    }

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            XMLOutputter printer = new XMLOutputter(Format.getPrettyFormat());
            printer.output(output, writer);
            writer.flush();


        } catch (Exception ex) {
            throw new TupleQueryResultHandlerException("error while transforming XML results to HTML", ex);
        } finally {
            try {
                writer.close();
            } catch (IOException e) {}
        }

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