/* 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, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package com.google.refine.model.changes; import java.io.IOException; import java.io.LineNumberReader; import java.io.Writer; import java.util.HashMap; import java.util.Map; import java.util.Properties; import org.json.JSONException; import org.json.JSONWriter; import com.google.refine.history.Change; import com.google.refine.model.Cell; import com.google.refine.model.Project; import com.google.refine.model.Recon; import com.google.refine.model.Row; import com.google.refine.util.Pool; public class MassReconChange implements Change { final protected Map<Long, Recon> _newRecons; final protected Map<Long, Recon> _oldRecons; public MassReconChange(Map<Long, Recon> newRecons, Map<Long, Recon> oldRecons) { _newRecons = newRecons; _oldRecons = oldRecons; } @Override public void apply(Project project) { switchRecons(project, _newRecons); } @Override public void revert(Project project) { switchRecons(project, _oldRecons); } protected void switchRecons(Project project, Map<Long, Recon> reconMap) { synchronized (project) { for (Row row : project.rows) { for (int c = 0; c < row.cells.size(); c++) { Cell cell = row.cells.get(c); if (cell != null && cell.recon != null) { Recon recon = cell.recon; if (reconMap.containsKey(recon.id)) { row.setCell(c, new Cell(cell.value, reconMap.get(recon.id))); } } } } } } @Override public void save(Writer writer, Properties options) throws IOException { writeRecons(writer, options, _oldRecons, "oldReconCount"); writeRecons(writer, options, _newRecons, "newReconCount"); writer.write("/ec/\n"); // end of change marker } protected void writeRecons(Writer writer, Properties options, Map<Long, Recon> recons, String key) throws IOException { writer.write(key + "="); writer.write(Integer.toString(recons.size())); writer.write('\n'); for (Recon recon : recons.values()) { Pool pool = (Pool) options.get("pool"); pool.poolReconCandidates(recon); JSONWriter jsonWriter = new JSONWriter(writer); try { recon.write(jsonWriter, options); } catch (JSONException e) { e.printStackTrace(); } writer.write("\n"); } } static public Change load(LineNumberReader reader, Pool pool) throws Exception { Map<Long, Recon> oldRecons = new HashMap<Long, Recon>(); Map<Long, Recon> newRecons = new HashMap<Long, Recon>(); 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 ("oldReconCount".equals(field)) { loadRecons(reader, pool, oldRecons, value); } else if ("newReconCount".equals(field)) { loadRecons(reader, pool, newRecons, value); } } MassReconChange change = new MassReconChange(newRecons, oldRecons); return change; } static protected void loadRecons(LineNumberReader reader, Pool pool, Map<Long, Recon> recons, String countString) throws Exception { int count = Integer.parseInt(countString); for (int i = 0; i < count; i++) { String line = reader.readLine(); Recon recon = Recon.loadStreaming(line, pool); recons.put(recon.id, recon); } } }