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* Redistributions of source code must retain the above copyright
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package com.google.refine.exporters;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.TimeZone;
import org.apache.commons.lang.StringUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.google.refine.ProjectManager;
import com.google.refine.browsing.Engine;
import com.google.refine.browsing.FilteredRows;
import com.google.refine.browsing.RowVisitor;
import com.google.refine.exporters.TabularSerializer.CellData;
import com.google.refine.model.Cell;
import com.google.refine.model.Column;
import com.google.refine.model.Project;
import com.google.refine.model.Recon;
import com.google.refine.model.Row;
import com.google.refine.preference.PreferenceStore;
import com.google.refine.util.JSONUtilities;
import com.google.refine.util.ParsingUtilities;
abstract public class CustomizableTabularExporterUtilities {
static public void exportRows(
final Project project,
final Engine engine,
Properties params,
final TabularSerializer serializer) {
String optionsString = (params != null) ? params.getProperty("options") : null;
JSONObject optionsTemp = null;
if (optionsString != null) {
try {
optionsTemp = ParsingUtilities.evaluateJsonStringToObject(optionsString);
} catch (JSONException e) {
// Ignore and keep options null.
}
}
final JSONObject options = optionsTemp;
final boolean outputColumnHeaders = options == null ? true :
JSONUtilities.getBoolean(options, "outputColumnHeaders", true);
final boolean outputBlankRows = options == null ? false :
JSONUtilities.getBoolean(options, "outputBlankRows", true);
final int limit = options == null ? -1 :
JSONUtilities.getInt(options, "limit", -1);
final List<String> columnNames;
final Map<String, CellFormatter> columnNameToFormatter =
new HashMap<String, CustomizableTabularExporterUtilities.CellFormatter>();
JSONArray columnOptionArray = options == null ? null :
JSONUtilities.getArray(options, "columns");
if (columnOptionArray == null) {
List<Column> columns = project.columnModel.columns;
columnNames = new ArrayList<String>(columns.size());
for (Column column : columns) {
String name = column.getName();
columnNames.add(name);
columnNameToFormatter.put(name, new CellFormatter());
}
} else {
int count = columnOptionArray.length();
columnNames = new ArrayList<String>(count);
for (int i = 0; i < count; i++) {
JSONObject columnOptions = JSONUtilities.getObjectElement(columnOptionArray, i);
if (columnOptions != null) {
String name = JSONUtilities.getString(columnOptions, "name", null);
if (name != null) {
columnNames.add(name);
columnNameToFormatter.put(name, new CellFormatter(columnOptions));
}
}
}
}
RowVisitor visitor = new RowVisitor() {
int rowCount = 0;
@Override
public void start(Project project) {
serializer.startFile(options);
if (outputColumnHeaders) {
List<CellData> cells = new ArrayList<TabularSerializer.CellData>(columnNames.size());
for (String name : columnNames) {
cells.add(new CellData(name, name, name, null));
}
serializer.addRow(cells, true);
}
}
@Override
public boolean visit(Project project, int rowIndex, Row row) {
List<CellData> cells = new ArrayList<TabularSerializer.CellData>(columnNames.size());
int nonBlankCount = 0;
for (String columnName : columnNames) {
Column column = project.columnModel.getColumnByName(columnName);
CellFormatter formatter = columnNameToFormatter.get(columnName);
CellData cellData = formatter.format(
project,
column,
row.getCell(column.getCellIndex()));
cells.add(cellData);
if (cellData != null) {
nonBlankCount++;
}
}
if (nonBlankCount > 0 || outputBlankRows) {
serializer.addRow(cells, false);
rowCount++;
}
return limit > 0 && rowCount >= limit;
}
@Override
public void end(Project project) {
serializer.endFile();
}
};
FilteredRows filteredRows = engine.getAllFilteredRows();
filteredRows.accept(project, visitor);
}
static public int[] countColumnsRows(
final Project project,
final Engine engine,
Properties params) {
RowCountingTabularSerializer serializer = new RowCountingTabularSerializer();
exportRows(project, engine, params, serializer);
return new int[] { serializer.columns, serializer.rows };
}
static private class RowCountingTabularSerializer implements TabularSerializer {
int columns;
int rows;
@Override
public void startFile(JSONObject options) {
}
@Override
public void endFile() {
}
@Override
public void addRow(List<CellData> cells, boolean isHeader) {
columns = Math.max(columns, cells.size());
rows++;
}
}
private enum ReconOutputMode {
ENTITY_NAME,
ENTITY_ID,
CELL_CONTENT
}
private enum DateFormatMode {
ISO_8601,
SHORT_LOCALE,
MEDIUM_LOCALE,
LONG_LOCALE,
FULL_LOCALE,
CUSTOM
}
final static private String fullIso8601 = "yyyy-MM-dd'T'HH:mm:ss'Z'";
static private class CellFormatter {
ReconOutputMode recon_outputMode = ReconOutputMode.ENTITY_NAME;
boolean recon_blankUnmatchedCells = false;
boolean recon_linkToEntityPages = true;
DateFormatMode date_formatMode = DateFormatMode.ISO_8601;
String date_custom = null;
boolean date_useLocalTimeZone = false;
boolean date_omitTime = false;
DateFormat dateFormatter;
Map<String, String> identifierSpaceToUrl = null;
CellFormatter() {
dateFormatter = new SimpleDateFormat(fullIso8601);
}
CellFormatter(JSONObject options) {
JSONObject reconSettings = JSONUtilities.getObject(options, "reconSettings");
if (reconSettings != null) {
String reconOutputString = JSONUtilities.getString(reconSettings, "output", null);
if ("entity-name".equals(reconOutputString)) {
recon_outputMode = ReconOutputMode.ENTITY_NAME;
} else if ("entity-id".equals(reconOutputString)) {
recon_outputMode = ReconOutputMode.ENTITY_ID;
} else if ("cell-content".equals(reconOutputString)) {
recon_outputMode = ReconOutputMode.CELL_CONTENT;
}
recon_blankUnmatchedCells = JSONUtilities.getBoolean(reconSettings, "blankUnmatchedCells", recon_blankUnmatchedCells);
recon_linkToEntityPages = JSONUtilities.getBoolean(reconSettings, "linkToEntityPages", recon_linkToEntityPages);
}
JSONObject dateSettings = JSONUtilities.getObject(options, "dateSettings");
if (dateSettings != null) {
String dateFormatString = JSONUtilities.getString(dateSettings, "format", null);
if ("iso-8601".equals(dateFormatString)) {
date_formatMode = DateFormatMode.ISO_8601;
} else if ("locale-short".equals(dateFormatString)) {
date_formatMode = DateFormatMode.SHORT_LOCALE;
} else if ("locale-medium".equals(dateFormatString)) {
date_formatMode = DateFormatMode.MEDIUM_LOCALE;
} else if ("locale-long".equals(dateFormatString)) {
date_formatMode = DateFormatMode.LONG_LOCALE;
} else if ("locale-full".equals(dateFormatString)) {
date_formatMode = DateFormatMode.FULL_LOCALE;
} else if ("custom".equals(dateFormatString)) {
date_formatMode = DateFormatMode.CUSTOM;
}
date_custom = JSONUtilities.getString(dateSettings, "custom", null);
date_useLocalTimeZone = JSONUtilities.getBoolean(dateSettings, "useLocalTimeZone", date_useLocalTimeZone);
date_omitTime = JSONUtilities.getBoolean(dateSettings, "omitTime", date_omitTime);
if (date_formatMode == DateFormatMode.CUSTOM &&
(date_custom == null || date_custom.isEmpty())) {
date_formatMode = DateFormatMode.ISO_8601;
}
}
switch (date_formatMode) {
case SHORT_LOCALE:
dateFormatter = date_omitTime ?
SimpleDateFormat.getDateInstance(SimpleDateFormat.SHORT) :
SimpleDateFormat.getDateTimeInstance(SimpleDateFormat.SHORT, SimpleDateFormat.SHORT);
break;
case MEDIUM_LOCALE:
dateFormatter = date_omitTime ?
SimpleDateFormat.getDateInstance(SimpleDateFormat.MEDIUM) :
SimpleDateFormat.getDateTimeInstance(SimpleDateFormat.MEDIUM, SimpleDateFormat.MEDIUM);
break;
case LONG_LOCALE:
dateFormatter = date_omitTime ?
SimpleDateFormat.getDateInstance(SimpleDateFormat.LONG) :
SimpleDateFormat.getDateTimeInstance(SimpleDateFormat.LONG, SimpleDateFormat.LONG);
break;
case FULL_LOCALE:
dateFormatter = date_omitTime ?
SimpleDateFormat.getDateInstance(SimpleDateFormat.FULL) :
SimpleDateFormat.getDateTimeInstance(SimpleDateFormat.FULL, SimpleDateFormat.FULL);
break;
case CUSTOM:
dateFormatter = new SimpleDateFormat(date_custom);
break;
default:
dateFormatter = date_omitTime ?
new SimpleDateFormat("yyyy-MM-dd") :
new SimpleDateFormat(fullIso8601);
}
if (!date_useLocalTimeZone) {
dateFormatter.setTimeZone(TimeZone.getTimeZone("UTC"));
}
}
CellData format(Project project, Column column, Cell cell) {
if (cell != null) {
String link = null;
String text = null;
if (cell.recon != null) {
Recon recon = cell.recon;
if (recon.judgment == Recon.Judgment.Matched) {
if (recon_outputMode == ReconOutputMode.ENTITY_NAME) {
text = recon.match.name;
} else if (recon_outputMode == ReconOutputMode.ENTITY_ID) {
text = recon.match.id;
} // else: output cell content
if (recon_linkToEntityPages) {
buildIdentifierSpaceToUrlMap();
String service = recon.service;
String viewUrl = identifierSpaceToUrl.get(service);
if (viewUrl != null) {
link = StringUtils.replace(viewUrl, "{{id}}", recon.match.id);
}
}
} else if (recon_blankUnmatchedCells) {
return null;
}
}
Object value = cell.value;
if (value != null) {
if (text == null) {
if (value instanceof String) {
text = (String) value;
} else if (value instanceof Calendar) {
text = dateFormatter.format(((Calendar) value).getTime());
} else if (value instanceof Date) {
text = dateFormatter.format((Date) value);
} else {
text = value.toString();
}
}
return new CellData(column.getName(), value, text, link);
}
}
return null;
}
void buildIdentifierSpaceToUrlMap() {
if (identifierSpaceToUrl != null) {
return;
}
identifierSpaceToUrl = new HashMap<String, String>();
PreferenceStore ps = ProjectManager.singleton.getPreferenceStore();
JSONArray services = (JSONArray) ps.get("reconciliation.standardServices");
if (services != null) {
int count = services.length();
for (int i = 0; i < count; i++) {
JSONObject service = JSONUtilities.getObjectElement(services, i);
JSONObject view = JSONUtilities.getObject(service, "view");
if (view != null) {
String url = JSONUtilities.getString(service, "url", null);
String viewUrl = JSONUtilities.getString(view, "url", null);
if (url != null && viewUrl != null) {
identifierSpaceToUrl.put(url, viewUrl);
}
}
}
}
}
}
}