Examples with RecordVisitor com.google.refine.browsing.RecordVisitor used on opensource projects

Example 1 with RecordVisitor

use of com.google.refine.browsing.RecordVisitor in project OpenRefine by OpenRefine.

the class GetRowsCommand method internalRespond.

protected void internalRespond(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    try {
        Project project = null;
        // This command also supports retrieving rows for an importing job.
        String importingJobID = request.getParameter("importingJobID");
        if (importingJobID != null) {
            long jobID = Long.parseLong(importingJobID);
            ImportingJob job = ImportingManager.getJob(jobID);
            if (job != null) {
                project = job.project;
            }
        }
        if (project == null) {
            project = getProject(request);
        }
        Engine engine = getEngine(request, project);
        String callback = request.getParameter("callback");
        int start = Math.min(project.rows.size(), Math.max(0, getIntegerParameter(request, "start", 0)));
        int limit = Math.min(project.rows.size() - start, Math.max(0, getIntegerParameter(request, "limit", 20)));
        Pool pool = new Pool();
        Properties options = new Properties();
        options.put("project", project);
        options.put("reconCandidateOmitTypes", true);
        options.put("pool", pool);
        response.setCharacterEncoding("UTF-8");
        response.setHeader("Content-Type", callback == null ? "application/json" : "text/javascript");
        PrintWriter writer = response.getWriter();
        if (callback != null) {
            writer.write(callback);
            writer.write("(");
        }
        JSONWriter jsonWriter = new JSONWriter(writer);
        jsonWriter.object();
        RowWritingVisitor rwv = new RowWritingVisitor(start, limit, jsonWriter, options);
        JSONObject sortingJson = null;
        try {
            String json = request.getParameter("sorting");
            sortingJson = (json == null) ? null : ParsingUtilities.evaluateJsonStringToObject(json);
        } catch (JSONException e) {
        }
        if (engine.getMode() == Mode.RowBased) {
            FilteredRows filteredRows = engine.getAllFilteredRows();
            RowVisitor visitor = rwv;
            if (sortingJson != null) {
                SortingRowVisitor srv = new SortingRowVisitor(visitor);
                srv.initializeFromJSON(project, sortingJson);
                if (srv.hasCriteria()) {
                    visitor = srv;
                }
            }
            jsonWriter.key("mode");
            jsonWriter.value("row-based");
            jsonWriter.key("rows");
            jsonWriter.array();
            filteredRows.accept(project, visitor);
            jsonWriter.endArray();
            jsonWriter.key("filtered");
            jsonWriter.value(rwv.total);
            jsonWriter.key("total");
            jsonWriter.value(project.rows.size());
        } else {
            FilteredRecords filteredRecords = engine.getFilteredRecords();
            RecordVisitor visitor = rwv;
            if (sortingJson != null) {
                SortingRecordVisitor srv = new SortingRecordVisitor(visitor);
                srv.initializeFromJSON(project, sortingJson);
                if (srv.hasCriteria()) {
                    visitor = srv;
                }
            }
            jsonWriter.key("mode");
            jsonWriter.value("record-based");
            jsonWriter.key("rows");
            jsonWriter.array();
            filteredRecords.accept(project, visitor);
            jsonWriter.endArray();
            jsonWriter.key("filtered");
            jsonWriter.value(rwv.total);
            jsonWriter.key("total");
            jsonWriter.value(project.recordModel.getRecordCount());
        }
        jsonWriter.key("start");
        jsonWriter.value(start);
        jsonWriter.key("limit");
        jsonWriter.value(limit);
        jsonWriter.key("pool");
        pool.write(jsonWriter, options);
        jsonWriter.endObject();
        if (callback != null) {
            writer.write(")");
        }
    } catch (Exception e) {
        respondException(response, e);
    }
}

Example 2 with RecordVisitor

use of com.google.refine.browsing.RecordVisitor in project OpenRefine by OpenRefine.

the class TemplatingExporter method export.

@Override
public void export(Project project, Properties options, Engine engine, Writer writer) throws IOException {
    String limitString = options.getProperty("limit");
    int limit = limitString != null ? Integer.parseInt(limitString) : -1;
    JSONObject sortingJson = null;
    try {
        String json = options.getProperty("sorting");
        sortingJson = (json == null) ? null : ParsingUtilities.evaluateJsonStringToObject(json);
    } catch (JSONException e) {
    }
    String templateString = options.getProperty("template");
    String prefixString = options.getProperty("prefix");
    String suffixString = options.getProperty("suffix");
    String separatorString = options.getProperty("separator");
    Template template;
    try {
        template = Parser.parse(templateString);
    } catch (ParsingException e) {
        throw new IOException("Missing or bad template", e);
    }
    template.setPrefix(prefixString);
    template.setSuffix(suffixString);
    template.setSeparator(separatorString);
    if (!"true".equals(options.getProperty("preview"))) {
        StringWriter stringWriter = new StringWriter();
        JSONWriter jsonWriter = new JSONWriter(stringWriter);
        try {
            jsonWriter.object();
            jsonWriter.key("template");
            jsonWriter.value(templateString);
            jsonWriter.key("prefix");
            jsonWriter.value(prefixString);
            jsonWriter.key("suffix");
            jsonWriter.value(suffixString);
            jsonWriter.key("separator");
            jsonWriter.value(separatorString);
            jsonWriter.endObject();
        } catch (JSONException e) {
        // ignore
        }
        project.getMetadata().getPreferenceStore().put("exporters.templating.template", stringWriter.toString());
    }
    if (engine.getMode() == Mode.RowBased) {
        FilteredRows filteredRows = engine.getAllFilteredRows();
        RowVisitor visitor = template.getRowVisitor(writer, limit);
        if (sortingJson != null) {
            try {
                SortingRowVisitor srv = new SortingRowVisitor(visitor);
                srv.initializeFromJSON(project, sortingJson);
                if (srv.hasCriteria()) {
                    visitor = srv;
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
        filteredRows.accept(project, visitor);
    } else {
        FilteredRecords filteredRecords = engine.getFilteredRecords();
        RecordVisitor visitor = template.getRecordVisitor(writer, limit);
        if (sortingJson != null) {
            try {
                SortingRecordVisitor srv = new SortingRecordVisitor(visitor);
                srv.initializeFromJSON(project, sortingJson);
                if (srv.hasCriteria()) {
                    visitor = srv;
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
        filteredRecords.accept(project, visitor);
    }
}

Example 3 with RecordVisitor

use of com.google.refine.browsing.RecordVisitor in project OpenRefine by OpenRefine.

the class RowReorderOperation method createHistoryEntry.

@Override
protected HistoryEntry createHistoryEntry(Project project, long historyEntryID) throws Exception {
    Engine engine = new Engine(project);
    engine.setMode(_mode);
    List<Integer> rowIndices = new ArrayList<Integer>();
    if (_mode == Mode.RowBased) {
        RowVisitor visitor = new IndexingVisitor(rowIndices);
        if (_sorting != null) {
            SortingRowVisitor srv = new SortingRowVisitor(visitor);
            srv.initializeFromJSON(project, _sorting);
            if (srv.hasCriteria()) {
                visitor = srv;
            }
        }
        engine.getAllRows().accept(project, visitor);
    } else {
        RecordVisitor visitor = new IndexingVisitor(rowIndices);
        if (_sorting != null) {
            SortingRecordVisitor srv = new SortingRecordVisitor(visitor);
            srv.initializeFromJSON(project, _sorting);
            if (srv.hasCriteria()) {
                visitor = srv;
            }
        }
        engine.getAllRecords().accept(project, visitor);
    }
    return new HistoryEntry(historyEntryID, project, "Reorder rows", this, new RowReorderChange(rowIndices));
}