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/** |
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$Id$ |
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Copyright (C) 2010 Nicklas Nordborg |
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This file is part of BASE - BioArray Software Environment. |
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Available at http://base.thep.lu.se/ |
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BASE is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License |
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as published by the Free Software Foundation; either version 3 |
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of the License, or (at your option) any later version. |
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|
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BASE is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with BASE. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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package net.sf.basedb.util.importer.spotdata; |
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import java.io.IOException; |
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import java.util.ArrayList; |
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import java.util.List; |
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|
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import net.sf.basedb.core.signal.ThreadSignalHandler; |
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import net.sf.basedb.util.bfs.AnnotationParser; |
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import net.sf.basedb.util.bfs.BfsParser; |
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import net.sf.basedb.util.bfs.DataParser; |
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import net.sf.basedb.util.bfs.EventHandler; |
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import net.sf.basedb.util.bfs.EventType; |
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|
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/** |
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A parser that synchronizes the parsing of multiple underlying |
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data parsers and a master reporter annotations parser. Before |
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it can be used a master parser must be set by {@link #setMasterParser(AnnotationParser)}. |
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Then, one or more data parsers is needed {@link #addDataParser(DataParser)}. |
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All parsers must have been parsed to beginning-of-file |
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(eg. {@link AnnotationParser#parseToBof()} and {@link DataParser#parseToBof()}) before |
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they are added to this class. The {@link #parse(EventHandler)} method will then |
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call {@link AnnotationParser#nextData()} and {@link DataParser#nextData()} |
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for each parser as long as data is returned. All parsers must resturn at least |
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as many data lines as the master parser or an exception is thrown. |
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|
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@author Nicklas |
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@version 2.15 |
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@base.modified $Date$ |
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*/ |
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public class SynchronizedSpotDataParser |
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implements BfsParser |
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{ |
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|
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/** |
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Event type that is issued for each data line. The event data is an |
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array with {@link SynchronizedData} objects. The first entry in the |
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array contains information from the master parser, the following |
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entries contain information for the data parsers in the order |
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they were added. |
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*/ |
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public static final EventType<SynchronizedData[]> DATA_EVENT = |
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new EventType<SynchronizedData[]>("synchonized.data"); |
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private AnnotationParser masterParser; |
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private List<DataParser> dataParsers; |
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/** |
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Create a new synchronized data parser. |
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*/ |
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public SynchronizedSpotDataParser() |
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{ |
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this.dataParsers = new ArrayList<DataParser>(); |
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} |
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/** |
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Sets the master parser. This parser should normally parse a |
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reporter annotations file. |
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*/ |
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public void setMasterParser(AnnotationParser parser) |
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{ |
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this.masterParser = parser; |
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} |
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|
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/** |
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Adds a data parser. The parser should parse a data file |
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that has the same number of data lines as the master parser. |
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Each line contains data identified by the corresponding |
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reporter in the master parser file. |
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*/ |
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public void addDataParser(DataParser parser) |
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{ |
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this.dataParsers.add(parser); |
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} |
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/** |
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@return Always null, since we are parsing multiple files |
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*/ |
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@Override |
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public String getFilename() |
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{ |
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return null; |
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} |
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|
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/** |
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@return The file size of the master parser |
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*/ |
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@Override |
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public long getFileSize() |
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{ |
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return masterParser.getFileSize(); |
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} |
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|
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/** |
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@return The current line number in the file parsed by the |
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master parser |
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*/ |
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@Override |
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public int getCurrentLine() |
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{ |
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return masterParser.getCurrentLine(); |
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} |
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|
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/** |
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@return The number of bytes parsed by the master parser |
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*/ |
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@Override |
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public long getParsedBytes() |
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{ |
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return masterParser.getParsedBytes(); |
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} |
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@Override |
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public void close() |
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{ |
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if (masterParser != null) masterParser.close(); |
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for (DataParser parser : dataParsers) |
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{ |
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parser.close(); |
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} |
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} |
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/** |
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Begin parsing and issue events to the given event handler. For each |
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data line a {@link #DATA_EVENT} is sent to the event handler. When |
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the end-of-file has been a {@link DataParser#END_OF_FILE_EVENT} is |
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sent. |
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|
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@param handler An event handler |
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@throws IOException If there is an error reading the stream data |
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@throws NullPointerException If the event handler or master parser is null |
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*/ |
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public void parse(EventHandler handler) |
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throws IOException |
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{ |
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if (handler == null) throw new NullPointerException("handler"); |
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if (masterParser == null) throw new NullPointerException("masterParser"); |
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|
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SynchronizedData[] data = new SynchronizedData[1+dataParsers.size()]; |
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data[0] = new SynchronizedData(masterParser); |
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int i = 1; |
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for (DataParser parser : dataParsers) |
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{ |
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data[i] = new SynchronizedData(parser); |
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++i; |
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} |
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|
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String[] tmp = masterParser.nextData(); |
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while (tmp != null) |
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{ |
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ThreadSignalHandler.checkInterrupted(); |
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data[0].setData(tmp); |
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i = 1; |
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for (DataParser parser : dataParsers) |
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{ |
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tmp = parser.nextData(); |
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if (tmp == null) |
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{ |
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throw new IOException("Unexpected end of file at line " + |
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parser.getCurrentLine() + " in file " + parser.getFilename()); |
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} |
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data[i].setData(tmp); |
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++i; |
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} |
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handler.handleEvent(DATA_EVENT, data, this); |
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tmp = masterParser.nextData(); |
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} |
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handler.handleEvent(DataParser.END_OF_FILE_EVENT, null, this); |
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} |
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|
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/** |
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This class holds information that is sent to the event |
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handler when {@link SynchronizedSpotDataParser#DATA_EVENT}:s are |
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sent. Each instance contains information about the underlying |
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parser (master parser or data parser) and the data on the |
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line that is currently being processed. |
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NOTE! There is usually only one instance of this class for |
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each parser. If the event handler needs to collect information |
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accross multiple lines the data should be copied to the event |
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handler. |
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*/ |
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public static class SynchronizedData |
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{ |
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private final BfsParser parser; |
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private String[] data; |
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|
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SynchronizedData(BfsParser parser) |
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{ |
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this.parser = parser; |
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} |
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|
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void setData(String[] data) |
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{ |
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this.data = data; |
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} |
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|
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/** |
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Get the current data line, split into columns. |
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*/ |
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public String[] getData() |
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{ |
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return data; |
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} |
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|
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/** |
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The underlying parser. |
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*/ |
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public BfsParser getParser() |
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{ |
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return parser; |
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} |
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} |
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|
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} |