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OpenRefine is a free, open source power tool for working with messy data and improving it
/*
Copyright 2010, Google Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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*/
package com.google.refine.model.changes;
import java.io.IOException;
import java.io.LineNumberReader;
import java.io.Serializable;
import java.io.Writer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import com.google.refine.history.Change;
import com.google.refine.model.Cell;
import com.google.refine.model.Column;
import com.google.refine.model.ModelException;
import com.google.refine.model.Project;
import com.google.refine.model.Recon;
import com.google.refine.model.Recon.Judgment;
import com.google.refine.model.ReconCandidate;
import com.google.refine.model.ReconStats;
import com.google.refine.model.ReconType;
import com.google.refine.model.Row;
import com.google.refine.model.recon.DataExtensionReconConfig;
import com.google.refine.model.recon.ReconciledDataExtensionJob.DataExtension;
import com.google.refine.util.ParsingUtilities;
import com.google.refine.util.Pool;
public class DataExtensionChange implements Change {
final protected String _baseColumnName;
final protected String _service;
final protected String _identifierSpace;
final protected String _schemaSpace;
final protected int _columnInsertIndex;
final protected List _columnNames;
final protected List _columnTypes;
final protected List _rowIndices;
final protected List _dataExtensions;
protected long _historyEntryID;
protected int _firstNewCellIndex = -1;
protected List _oldRows;
protected List _newRows;
public DataExtensionChange(
String baseColumnName,
String service,
String identifierSpace,
String schemaSpace,
int columnInsertIndex,
List columnNames,
List columnTypes,
List rowIndices,
List dataExtensions,
long historyEntryID) {
_baseColumnName = baseColumnName;
_service = service;
_identifierSpace = identifierSpace;
_schemaSpace = schemaSpace;
_columnInsertIndex = columnInsertIndex;
_columnNames = columnNames;
_columnTypes = columnTypes;
_rowIndices = rowIndices;
_dataExtensions = dataExtensions;
_historyEntryID = historyEntryID;
}
protected DataExtensionChange(
String baseColumnName,
String service,
String identifierSpace,
String schemaSpace,
int columnInsertIndex,
List columnNames,
List columnTypes,
List rowIndices,
List dataExtensions,
int firstNewCellIndex,
List oldRows,
List newRows) {
_baseColumnName = baseColumnName;
_service = service;
_identifierSpace = identifierSpace;
_schemaSpace = schemaSpace;
_columnInsertIndex = columnInsertIndex;
_columnNames = columnNames;
_columnTypes = columnTypes;
_rowIndices = rowIndices;
_dataExtensions = dataExtensions;
_firstNewCellIndex = firstNewCellIndex;
_oldRows = oldRows;
_newRows = newRows;
}
@Override
public void apply(Project project) {
synchronized (project) {
if (_firstNewCellIndex < 0) {
_firstNewCellIndex = project.columnModel.allocateNewCellIndex();
for (int i = 1; i < _columnNames.size(); i++) {
project.columnModel.allocateNewCellIndex();
}
_oldRows = new ArrayList(project.rows);
_newRows = new ArrayList(project.rows.size());
int cellIndex = project.columnModel.getColumnByName(_baseColumnName).getCellIndex();
int keyCellIndex = project.columnModel.columns.get(project.columnModel.getKeyColumnIndex()).getCellIndex();
int index = 0;
int rowIndex = index < _rowIndices.size() ? _rowIndices.get(index) : _oldRows.size();
DataExtension dataExtension = index < _rowIndices.size() ? _dataExtensions.get(index) : null;
index++;
Map reconMap = new HashMap();
for (int r = 0; r < _oldRows.size(); r++) {
Row oldRow = _oldRows.get(r);
if (r < rowIndex) {
_newRows.add(oldRow.dup());
continue;
}
if (dataExtension == null || dataExtension.data.length == 0) {
_newRows.add(oldRow);
} else {
Row firstNewRow = oldRow.dup();
extendRow(firstNewRow, dataExtension, 0, reconMap);
_newRows.add(firstNewRow);
int r2 = r + 1;
for (int subR = 1; subR < dataExtension.data.length; subR++) {
if (r2 < project.rows.size()) {
Row oldRow2 = project.rows.get(r2);
if (oldRow2.isCellBlank(cellIndex) &&
oldRow2.isCellBlank(keyCellIndex)) {
Row newRow = oldRow2.dup();
extendRow(newRow, dataExtension, subR, reconMap);
_newRows.add(newRow);
r2++;
continue;
}
}
Row newRow = new Row(cellIndex + _columnNames.size());
extendRow(newRow, dataExtension, subR, reconMap);
_newRows.add(newRow);
}
r = r2 - 1; // r will be incremented by the for loop anyway
}
rowIndex = index < _rowIndices.size() ? _rowIndices.get(index) : _oldRows.size();
dataExtension = index < _rowIndices.size() ? _dataExtensions.get(index) : null;
index++;
}
}
project.rows.clear();
project.rows.addAll(_newRows);
for (int i = 0; i < _columnNames.size(); i++) {
String name = _columnNames.get(i);
int cellIndex = _firstNewCellIndex + i;
Column column = new Column(cellIndex, name);
ReconType columnType = _columnTypes.get(i);
column.setReconConfig(new DataExtensionReconConfig(
_service,
_identifierSpace,
_schemaSpace,
columnType));
if (project.columnModel.getColumnByName(_baseColumnName) != null) {
column.setSourceReconConfig(project.columnModel.getColumnByName(_baseColumnName).getReconConfig());
}
ReconStats reconStats = ReconStats.create(project, cellIndex);
if (reconStats.matchedTopics > 0) {
column.setReconStats(reconStats);
}
try {
project.columnModel.addColumn(_columnInsertIndex + i, column, true);
// the column might have been renamed to avoid collision
_columnNames.set(i, column.getName());
} catch (ModelException e) {
// won't get here since we set the avoid collision flag
}
}
project.update();
}
}
protected void extendRow(
Row row,
DataExtension dataExtension,
int extensionRowIndex,
Map reconMap) {
Object[] values = dataExtension.data[extensionRowIndex];
for (int c = 0; c < values.length; c++) {
Object value = values[c];
Cell cell = null;
if (value instanceof ReconCandidate) {
ReconCandidate rc = (ReconCandidate) value;
Recon recon;
if (reconMap.containsKey(rc.id)) {
recon = reconMap.get(rc.id);
} else {
recon = new Recon(_historyEntryID, _identifierSpace, _schemaSpace);
recon.addCandidate(rc);
recon.service = _service;
recon.match = rc;
recon.matchRank = 0;
recon.judgment = Judgment.Matched;
recon.judgmentAction = "auto";
recon.judgmentBatchSize = 1;
reconMap.put(rc.id, recon);
}
cell = new Cell(rc.name, recon);
} else {
cell = value == null ? null : new Cell((Serializable) value, null);
}
row.setCell(_firstNewCellIndex + c, cell);
}
}
@Override
public void revert(Project project) {
synchronized (project) {
project.rows.clear();
project.rows.addAll(_oldRows);
for (int i = 0; i < _columnNames.size(); i++) {
project.columnModel.columns.remove(_columnInsertIndex);
}
project.update();
}
}
@Override
public void save(Writer writer, Properties options) throws IOException {
writer.write("baseColumnName=");
writer.write(_baseColumnName);
writer.write('\n');
writer.write("service=");
writer.write(_service);
writer.write('\n');
writer.write("identifierSpace=");
writer.write(_identifierSpace);
writer.write('\n');
writer.write("schemaSpace=");
writer.write(_schemaSpace);
writer.write('\n');
writer.write("columnInsertIndex=");
writer.write(Integer.toString(_columnInsertIndex));
writer.write('\n');
writer.write("columnNameCount=");
writer.write(Integer.toString(_columnNames.size()));
writer.write('\n');
for (String name : _columnNames) {
writer.write(name);
writer.write('\n');
}
writer.write("columnTypeCount=");
writer.write(Integer.toString(_columnTypes.size()));
writer.write('\n');
for (ReconType type : _columnTypes) {
if (type != null) {
ParsingUtilities.defaultWriter.writeValue(writer, type);
}
writer.write('\n');
}
writer.write("rowIndexCount=");
writer.write(Integer.toString(_rowIndices.size()));
writer.write('\n');
for (Integer rowIndex : _rowIndices) {
writer.write(rowIndex.toString());
writer.write('\n');
}
writer.write("firstNewCellIndex=");
writer.write(Integer.toString(_firstNewCellIndex));
writer.write('\n');
writer.write("newRowCount=");
writer.write(Integer.toString(_newRows.size()));
writer.write('\n');
for (Row row : _newRows) {
row.save(writer, options);
writer.write('\n');
}
writer.write("oldRowCount=");
writer.write(Integer.toString(_oldRows.size()));
writer.write('\n');
for (Row row : _oldRows) {
row.save(writer, options);
writer.write('\n');
}
writer.write("/ec/\n"); // end of change marker
}
static public Change load(LineNumberReader reader, Pool pool) throws Exception {
String baseColumnName = null;
String service = null;
String identifierSpace = null;
String schemaSpace = null;
int columnInsertIndex = -1;
List columnNames = null;
List columnTypes = null;
List rowIndices = null;
List dataExtensions = null;
List oldRows = null;
List newRows = null;
int firstNewCellIndex = -1;
String line;
while ((line = reader.readLine()) != null && !"/ec/".equals(line)) {
int equal = line.indexOf('=');
CharSequence field = line.subSequence(0, equal);
String value = line.substring(equal + 1);
if ("baseColumnName".equals(field)) {
baseColumnName = value;
} else if ("service".equals(field)) {
service = value;
} else if ("identifierSpace".equals(field)) {
identifierSpace = value;
} else if ("schemaSpace".equals(field)) {
schemaSpace = value;
} else if ("columnInsertIndex".equals(field)) {
columnInsertIndex = Integer.parseInt(value);
} else if ("firstNewCellIndex".equals(field)) {
firstNewCellIndex = Integer.parseInt(value);
} else if ("rowIndexCount".equals(field)) {
int count = Integer.parseInt(value);
rowIndices = new ArrayList(count);
for (int i = 0; i < count; i++) {
line = reader.readLine();
if (line != null) {
rowIndices.add(Integer.parseInt(line));
}
}
} else if ("columnNameCount".equals(field)) {
int count = Integer.parseInt(value);
columnNames = new ArrayList(count);
for (int i = 0; i < count; i++) {
line = reader.readLine();
if (line != null) {
columnNames.add(line);
}
}
} else if ("columnTypeCount".equals(field)) {
int count = Integer.parseInt(value);
columnTypes = new ArrayList(count);
for (int i = 0; i < count; i++) {
line = reader.readLine();
if (line == null || line.length() == 0) {
columnTypes.add(null);
} else {
columnTypes.add(ReconType.load(line));
}
}
} else if ("dataExtensionCount".equals(field)) {
// kept for compatibility with 2.8, but the data
// deserialized here is not actually needed to apply/undo
// the change, so we ignore it.
int count = Integer.parseInt(value);
dataExtensions = new ArrayList(count);
for (int i = 0; i < count; i++) {
line = reader.readLine();
if (line == null) {
continue;
}
if (line.length() == 0) {
dataExtensions.add(null);
continue;
}
int rowCount = Integer.parseInt(line);
for (int r = 0; r < rowCount; r++) {
for (int c = 0; c < columnNames.size(); c++) {
line = reader.readLine();
}
}
}
} else if ("oldRowCount".equals(field)) {
int count = Integer.parseInt(value);
oldRows = new ArrayList(count);
for (int i = 0; i < count; i++) {
line = reader.readLine();
if (line != null) {
oldRows.add(Row.load(line, pool));
}
}
} else if ("newRowCount".equals(field)) {
int count = Integer.parseInt(value);
newRows = new ArrayList(count);
for (int i = 0; i < count; i++) {
line = reader.readLine();
if (line != null) {
newRows.add(Row.load(line, pool));
}
}
}
}
DataExtensionChange change = new DataExtensionChange(
baseColumnName,
service,
identifierSpace,
schemaSpace,
columnInsertIndex,
columnNames,
columnTypes,
rowIndices,
dataExtensions,
firstNewCellIndex,
oldRows,
newRows);
return change;
}
}