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/** |
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$Id$ |
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Copyright (C) 2007 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.parser; |
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|
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import java.util.Stack; |
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|
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import org.nfunk.jep.ParseException; |
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|
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import net.sf.basedb.util.jep.JepFunction; |
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|
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/** |
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Adds a <code>dataNo()</code> function to Jep. The dataNo() function is used with the |
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{@link FlatFileParser} to get the current data line number within a section. Use the |
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{@link FlatFileParser#getMapper(String)} with an argument starting with an equal |
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sign to create a mapper that uses Jep. |
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<pre class="code"> |
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FlatFileParser ffp = ... |
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Mapper dataNoMapper = ffp.getMapper("=dataNo()"); |
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while (ffp.hasMoreData()) |
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{ |
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Data data = ffp.nextData(); |
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int lineNumber = dataNoMapper.getInt(data); |
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} |
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</pre> |
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|
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@author nicklas |
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@version 2.4 |
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@base.modified $Date$ |
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*/ |
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public class DataNoFunction |
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implements JepFunction |
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{ |
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|
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private FlatFileParser.Data data; |
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|
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public DataNoFunction() |
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{} |
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|
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/* |
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From the JepFunction interface |
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------------------------------------------- |
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*/ |
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/** |
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@return The string "dataNo" |
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*/ |
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@Override |
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public String getFunctionName() |
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{ |
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return "dataNo"; |
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} |
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// ------------------------------------------- |
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/* |
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From the PostfixMathCommandI interface |
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------------------------------------------- |
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*/ |
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/** |
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@return Always 0 |
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*/ |
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@Override |
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public int getNumberOfParameters() |
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{ |
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return 0; |
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} |
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@Override |
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public void setCurNumberOfParameters(int n) |
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{} |
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@Override |
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public boolean checkNumberOfParameters(int n) |
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{ |
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return n == 0; |
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} |
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@Override |
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@SuppressWarnings({"unchecked", "rawtypes"}) |
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public void run(Stack stack) |
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throws ParseException |
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{ |
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if (stack == null) |
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{ |
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throw new ParseException("Stack is null"); |
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} |
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stack.push(data.dataLineNo()); |
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} |
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// ------------------------------------------- |
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|
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public void setData(FlatFileParser.Data data) |
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{ |
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this.data = data; |
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} |
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|
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} |