[hmath-commits] org.hmath.server/WEB-INF/src/org/hartmath/server/macro/table MinFunction.java,NONE,1.1 FunctionRepository.java,NONE,1.1 AvgFunction.java,NONE,1.1 TableBuilder.java,NONE,1.1 SumFunction.java,NONE,1.1 Function.java,NONE,1.1 MaxFunction.java,NONE,1.1 Table.java,NONE,1.1 FunctionLoader.java,NONE,1.1

[<js...@us...>]

Update of /cvsroot/hmath/org.hmath.server/WEB-INF/src/org/hartmath/server/macro/table
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv21210/WEB-INF/src/org/hartmath/server/macro/table

Added Files:
	MinFunction.java FunctionRepository.java AvgFunction.java 
	TableBuilder.java SumFunction.java Function.java 
	MaxFunction.java Table.java FunctionLoader.java 
Log Message:
initial version


--- NEW FILE: MinFunction.java ---
/*
 * This file is part of "SnipSnap Radeox Rendering Engine".
 *
 * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
 * All Rights Reserved.
 *
 * Please visit http://radeox.org/ for updates and contact.
 *
 * --LICENSE NOTICE--
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * --LICENSE NOTICE--
 */

package org.hartmath.server.macro.table;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * A function that finds the max of table cells
 *
 * @author stephan
 * @version $Id: MinFunction.java,v 1.1 2004/03/09 20:13:06 jsurfer Exp $
 */

public class MinFunction implements Function {
  private static Log log = LogFactory.getLog(MinFunction.class);


  public String getName() {
    return "MIN";
  }

  public void execute(Table table, int posx, int posy, int startX, int startY, int endX, int endY) {
    float min = Float.MAX_VALUE;
    boolean floating = false;
    for (int x = startX; x <= endX; x++) {
      for (int y = startY; y <= endY; y++) {
        //Logger.debug("x="+x+" y="+y+" >"+getXY(x,y));
        float value = 0;
        try {
          value += Integer.parseInt((String) table.getXY(x, y));
        } catch (Exception e) {
          try {
            value += Float.parseFloat((String) table.getXY(x, y));
            floating = true;
          } catch (NumberFormatException e1) {
            log.debug("SumFunction: unable to parse " + table.getXY(x, y));
          }
        }
        if (min > value) {
          min = value;
        }
      }
    }
    //Logger.debug("Sum="+sum);
    if (floating) {
      table.setXY(posx, posy, "" + min);
    } else {
      table.setXY(posx, posy, "" + (int) min);
    }
  }

}

--- NEW FILE: FunctionRepository.java ---
/*
 * This file is part of "SnipSnap Radeox Rendering Engine".
 *
 * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
 * All Rights Reserved.
 *
 * Please visit http://radeox.org/ for updates and contact.
 *
 * --LICENSE NOTICE--
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * --LICENSE NOTICE--
 */

package org.hartmath.server.macro.table;

import org.radeox.macro.PluginRepository;
import org.radeox.macro.Repository;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * Repository for functions
 *
 * @author Stephan J. Schmidt
 * @version $Id: FunctionRepository.java,v 1.1 2004/03/09 20:13:06 jsurfer Exp $
 */

public class FunctionRepository extends PluginRepository {
  protected static Repository instance;
  protected List loaders;

  public synchronized  static Repository getInstance() {
    if (null == instance) {
      instance = new FunctionRepository();
    }
    return instance;
  }

 private void load() {
    Iterator iterator = loaders.iterator();
    while (iterator.hasNext()) {
      FunctionLoader loader = (FunctionLoader) iterator.next();
      loader.loadPlugins(this);
    }
  }
  private FunctionRepository() {
    loaders = new ArrayList();
    loaders.add(new FunctionLoader());

    load();
  }
}

--- NEW FILE: AvgFunction.java ---
/*
 * This file is part of "SnipSnap Radeox Rendering Engine".
 *
 * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
 * All Rights Reserved.
 *
 * Please visit http://radeox.org/ for updates and contact.
 *
 * --LICENSE NOTICE--
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * --LICENSE NOTICE--
 */

package org.hartmath.server.macro.table;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * A function that calculates the average  table cells
 *
 * @author stephan
 * @version $Id: AvgFunction.java,v 1.1 2004/03/09 20:13:06 jsurfer Exp $
 */

public class AvgFunction implements Function {
  private static Log log = LogFactory.getLog(AvgFunction.class);


  public String getName() {
    return "AVG";
  }

  public void execute(Table table, int posx, int posy, int startX, int startY, int endX, int endY) {
    float sum = 0;
    int count = 0;
    for (int x = startX; x <= endX; x++) {
      for (int y = startY; y <= endY; y++) {
        //Logger.debug("x="+x+" y="+y+" >"+getXY(x,y));
        try {
          sum += Integer.parseInt((String) table.getXY(x, y));
          count++;
        } catch (Exception e) {
          try {
            sum += Float.parseFloat((String) table.getXY(x, y));
            count++;
          } catch (NumberFormatException e1) {
            log.debug("SumFunction: unable to parse " + table.getXY(x, y));
          }
        }
      }
    }
    //Logger.debug("Sum="+sum);
    table.setXY(posx, posy, "" + sum / count);
  }

}

--- NEW FILE: TableBuilder.java ---
/*
 * This file is part of "SnipSnap Radeox Rendering Engine".
 * 
 * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel All Rights Reserved.
 * 
 * Please visit http://radeox.org/ for updates and contact.
 * 
 * --LICENSE NOTICE-- This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser
 * General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any
 * later version.
 * 
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA --LICENSE NOTICE--
 */

package org.hartmath.server.macro.table;

import org.radeox.api.engine.context.RenderContext;

/**
 * Built a table from a string
 * 
 * @author stephan
 * @version $Id: TableBuilder.java,v 1.1 2004/03/09 20:13:06 jsurfer Exp $
 */

public class TableBuilder {
  //  public static Table build(String content, RenderContext context) {
  //    Table table = new Table(context);
  //    StringTokenizer tokenizer = new StringTokenizer(content, "|\n", true);
  //    String lastToken = null;
  //    while (tokenizer.hasMoreTokens()) {
  //      String token = tokenizer.nextToken();
  //      if ("\n".equals(token)) {
  //        // Handles "\n" - "|\n"
  //        if (null == lastToken || "|".equals(lastToken)) {
  //          table.addCell(" ");
  //        }
  //        table.newRow();
  //      } else if (!"|".equals(token)) {
  //        table.addCell(token);
  //      } else if (null == lastToken || "|".equals(lastToken)) {
  //        // Handles "|" "||"
  //        table.addCell(" ");
  //      }
  //      lastToken = token;
  //    }
  //    return table;
  //  }
  public static Table build(String content, RenderContext context) {
    Table table = new Table(context);
    char[] source = content.toCharArray();
    char currentChar = ' ';
    char lastChar = ' ';
    int startPosition = 0;
    int currentPosition = 0;
    StringBuffer buffer = new StringBuffer(128);
    //    StringTokenizer tokenizer = new StringTokenizer(content, "|\n", true);
    //    String lastToken = null;
    try {
      while (true) {
        currentChar = source[currentPosition++];
        switch (currentChar) {
          case '\n' :
            // Handles "\n" - "|\n"
            if (lastChar == '|') {
              table.addCell(" ");
            } else {
              table.addCell(buffer.toString());
              buffer = new StringBuffer(128);
            }
            table.newRow();
            break;
          case '|' :
            if (lastChar == '\\') {
              buffer.insert(buffer.length() - 1, currentChar);
            } else {
              table.addCell(buffer.toString());
              buffer = new StringBuffer(128);
            }
            break;
          case '{' :
            if (lastChar == '\\') {
              buffer.append(currentChar);
            } else {
              int tempPosition = currentPosition;
              char tempChar = ' ';
              try {
                lastChar = currentChar;
                buffer.append(currentChar);
                while ((tempChar = source[tempPosition++]) != '}' || lastChar == '\\') {
                  buffer.append(tempChar);
                  lastChar = tempChar;
                }
                buffer.append(tempChar);
                currentPosition = tempPosition;
              } catch (IndexOutOfBoundsException e) {
                table.addCell(buffer.toString());
                buffer = new StringBuffer(128);
                currentPosition = tempPosition;
              }
            }
            break;
          default :
            buffer.append(currentChar);
        }
        lastChar = currentChar;
      }
    } catch (IndexOutOfBoundsException e) {

    }
    return table;
  }
}

--- NEW FILE: SumFunction.java ---
/*
 * This file is part of "SnipSnap Radeox Rendering Engine".
 *
 * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
 * All Rights Reserved.
 *
 * Please visit http://radeox.org/ for updates and contact.
 *
 * --LICENSE NOTICE--
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * --LICENSE NOTICE--
 */

package org.hartmath.server.macro.table;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * A function that summerizes table cells
 *
 * @author stephan
 * @version $Id: SumFunction.java,v 1.1 2004/03/09 20:13:06 jsurfer Exp $
 */

public class SumFunction implements Function {
  private static Log log = LogFactory.getLog(SumFunction.class);


  public String getName() {
    return "SUM";
  }

  public void execute(Table table, int posx, int posy, int startX, int startY, int endX, int endY) {
    float sum = 0;
    boolean floating = false;
    for (int x = startX; x <= endX; x++) {
      for (int y = startY; y <= endY; y++) {
        //Logger.debug("x="+x+" y="+y+" >"+getXY(x,y));
        try {
          sum += Integer.parseInt((String) table.getXY(x, y));
        } catch (Exception e) {
          try {
            sum += Float.parseFloat((String) table.getXY(x, y));
            floating = true;
          } catch (NumberFormatException e1) {
            log.debug("SumFunction: unable to parse " + table.getXY(x, y));
          }
        }
      }
    }
    //Logger.debug("Sum="+sum);
    if (floating) {
      table.setXY(posx, posy, "" + sum);
    } else {
      table.setXY(posx, posy, "" + (int) sum);
    }
  }

}

--- NEW FILE: Function.java ---
/*
 * This file is part of "SnipSnap Radeox Rendering Engine".
 *
 * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
 * All Rights Reserved.
 *
 * Please visit http://radeox.org/ for updates and contact.
 *
 * --LICENSE NOTICE--
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * --LICENSE NOTICE--
 */

package org.hartmath.server.macro.table;


/**
 * A function interface for functions in table cells like
 * =SUM(A1:A3)
 *
 * @author stephan
 * @version $Id: Function.java,v 1.1 2004/03/09 20:13:06 jsurfer Exp $
 */

public interface Function {
  public String getName();
  public void execute(Table table, int posx, int posy, int startX, int startY, int endX, int endY);
}

--- NEW FILE: MaxFunction.java ---
/*
 * This file is part of "SnipSnap Radeox Rendering Engine".
 *
 * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
 * All Rights Reserved.
 *
 * Please visit http://radeox.org/ for updates and contact.
 *
 * --LICENSE NOTICE--
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * --LICENSE NOTICE--
 */

package org.hartmath.server.macro.table;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * A function that finds the max of table cells
 *
 * @author stephan
 * @version $Id: MaxFunction.java,v 1.1 2004/03/09 20:13:06 jsurfer Exp $
 */

public class MaxFunction implements Function {
  private static Log log = LogFactory.getLog(MaxFunction.class);


  public String getName() {
    return "MAX";
  }

  public void execute(Table table, int posx, int posy, int startX, int startY, int endX, int endY) {
    float max = 0;
    boolean floating = false;
    for (int x = startX; x <= endX; x++) {
      for (int y = startY; y <= endY; y++) {
        //Logger.debug("x="+x+" y="+y+" >"+getXY(x,y));
        float value = 0;
        try {
          value += Integer.parseInt((String) table.getXY(x, y));
        } catch (Exception e) {
          try {
            value += Float.parseFloat((String) table.getXY(x, y));
            floating = true;
          } catch (NumberFormatException e1) {
            log.debug("SumFunction: unable to parse " + table.getXY(x, y));
          }
        }
        if (max < value) {
          max = value;
        }
      }
    }
    //Logger.debug("Sum="+sum);
    if (floating) {
      table.setXY(posx, posy, "" + max);
    } else {
      table.setXY(posx, posy, "" + (int) max);
    }
  }

}

--- NEW FILE: Table.java ---
/*
 * This file is part of "SnipSnap Radeox Rendering Engine".
 * 
 * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel All Rights Reserved.
 * 
 * Please visit http://radeox.org/ for updates and contact.
 * 
 * --LICENSE NOTICE-- This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser
 * General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any
 * later version.
 * 
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA --LICENSE NOTICE--
 */

package org.hartmath.server.macro.table;

import java.io.IOException;
import java.io.Writer;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.radeox.api.engine.RenderEngine;
import org.radeox.api.engine.context.RenderContext;
import org.radeox.macro.Repository;

/**
 * A Table implementation primarly for the table macro
 * 
 * @author stephan
 * @version $Id: Table.java,v 1.1 2004/03/09 20:13:06 jsurfer Exp $
 */

public class Table {
  // current number of rows
  private int indexRow = 0;
  // current number of cols
  private int indexCol = 0;
  private List rows;
  private List currentRow;
  private List functionOccurences;
  private RenderContext fContext;
  private RenderEngine fEngine;

  private Repository functions;

  public Table(RenderContext context) {
    rows = new ArrayList(10);
    currentRow = new ArrayList(10);
    functions = FunctionRepository.getInstance();
    fContext = context;
    fEngine = context.getRenderEngine();
  }

  private void addFunction(Function function) {
    functions.put(function.getName().toLowerCase(), function);
  }

  public Object getXY(int x, int y) {
    // perhaps move everything to a twodim array first
    return ((List) rows.get(y)).get(x);
  }

  public void setXY(int x, int y, Object content) {
    ((List) rows.get(y)).set(x, content);
  }

  /**
   * Add a cell to the current row of the table
   * 
   * @param content
   *            Content of the cell
   */
  public void addCell(String content) {
    content = content.trim();
    if (content.startsWith("=")) {
      //Logger.debug("Table.addCell: function found.");
      if (null == functionOccurences) {
        functionOccurences = new ArrayList();
      }
      functionOccurences.add(new int[] { indexCol, indexRow });
      // function
    }

    // jsurfer start - filter the current tables cell
    String temp = fEngine.render(content, fContext);
    if (temp != null) {
      currentRow.add(temp);
    } else {
      currentRow.add(content);
    }

    //    currentRow.add(content);+
    // jsurfer end
    indexCol++;
  }

  /**
   * Finishes current row and starts a new one
   */
  public void newRow() {
    rows.add(currentRow);
    indexRow++;
    // create new row with number of cells of
    // the last row, this is a good guess
    currentRow = new ArrayList(indexCol);
    indexCol = 0;
  }

  /**
   * Recalculate all cells. Currently does nothing.
   */
  public void calc() {
    if (null != functionOccurences) {
      Iterator iterator = functionOccurences.iterator();
      while (iterator.hasNext()) {
        int[] position = (int[]) iterator.next();
        String functionString = ((String) getXY(position[0], position[1])).trim();
        // better use RegEx
        String name = functionString.substring(1, functionString.indexOf("(")).trim().toLowerCase();

        String range = functionString.substring(functionString.indexOf("(") + 1, functionString.indexOf(")"));
        int colon = range.indexOf(":");
        String start = range.substring(0, colon).trim();
        String end = range.substring(colon + 1).trim();

        int startX = start.charAt(0) - 'A';
        int startY = Integer.parseInt(start.substring(1)) - 1;
        int endX = end.charAt(0) - 'A';
        int endY = Integer.parseInt(end.substring(1)) - 1;

        // normalize range, start is left top, end is bottom right
        if (startX > endX) {
          int tmp = startX;
          startX = endX;
          endX = tmp;
        }

        if (startY > endY) {
          int tmp = startY;
          startY = endY;
          endY = tmp;
        }

        //Logger.debug("Calc: " + position[0] + " " + position[1] + " " + function + " " + start + " " + end);
        //Logger.debug("Calc: " + startX+","+startY+" - "+endX+","+endY);

        if (functions.containsKey(name)) {
          Function function = (Function) functions.get(name);
          function.execute(this, position[0], position[1], startX, startY, endX, endY);
        }
      }
    }
    return;

  }

  /**
   * Serialize table by appending it to a writer. The output format is HTML.
   * 
   * @param writer
   *            Writer to append the table object to
   * 
   * @return writer Writer the table object appended itself to
   */
  public Writer appendTo(Writer writer) throws IOException {
    writer.write("<table class=\"wiki-table\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\">");
    List[] outputRows = (List[]) rows.toArray(new List[0]);
    int rowSize = outputRows.length;
    boolean odd = true;
    for (int i = 0; i < rowSize; i++) {
      writer.write("<tr");
      if (i == 0) {
        writer.write(">");
      } else if (odd) {
        writer.write(" class=\"table-odd\">");
        odd = false;
      } else {
        writer.write(" class=\"table-even\">");
        odd = true;
      }
      String[] outputCols = (String[]) outputRows[i].toArray(new String[0]);
      int colSize = outputCols.length;
      for (int j = 0; j < colSize; j++) {
        writer.write(i == 0 ? "<th>" : "<td>");
        if (outputCols[j] == null || outputCols[j].trim().length() == 0) {
          writer.write("&#160;");
        } else {
          writer.write(outputCols[j]);
        }
        writer.write(i == 0 ? "</th>" : "</td>");
      }
      writer.write("</tr>");
    }
    writer.write("</table>");
    return writer;
  }
}
--- NEW FILE: FunctionLoader.java ---
/*
 * This file is part of "SnipSnap Radeox Rendering Engine".
 *
 * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
 * All Rights Reserved.
 *
 * Please visit http://radeox.org/ for updates and contact.
 *
 * --LICENSE NOTICE--
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * --LICENSE NOTICE--
 */

package org.hartmath.server.macro.table;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.radeox.macro.PluginLoader;
import org.radeox.macro.Repository;

/**
 * Plugin loader for table functions
 *
 * @author Stephan J. Schmidt
 * @version $Id: FunctionLoader.java,v 1.1 2004/03/09 20:13:06 jsurfer Exp $
 */

public class FunctionLoader extends PluginLoader {
  private static Log log = LogFactory.getLog(FunctionLoader.class);

  protected static FunctionLoader instance;

  public static synchronized PluginLoader getInstance() {
    if (null == instance) {
      instance = new FunctionLoader();
    }
    return instance;
  }

  public Class getLoadClass() {
    return Function.class;
  }

  /**
   * Add a plugin to the known plugin map
   *
   * @param plugin Function to add
   */
  public void add(Repository repository, Object plugin) {
    if (plugin instanceof Function) {
      repository.put(((Function) plugin).getName().toLowerCase(), plugin);
    } else {
      log.debug("FunctionLoader: " + plugin.getClass() + " not of Type " + getLoadClass());
    }
  }

}