/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE
 * or https://OpenDS.dev.java.net/OpenDS.LICENSE.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE.  If applicable,
 * add the following below this CDDL HEADER, with the fields enclosed
 * by brackets "[]" replaced with your own identifying information:
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 * CDDL HEADER END
 *
 *
 *      Copyright 2008-2009 Sun Microsystems, Inc.
 */

package org.opends.guitools.controlpanel.datamodel;

import static org.opends.messages.AdminToolMessages.*;

import org.opends.messages.Message;
import org.opends.server.admin.std.meta.LocalDBIndexCfgDefn.IndexType;

/**
 * The table model for the indexes.  This is the table model used by the table
 * that appears on the right side of the Manage Index dialog when the user
 * clicks on the node "Index" and it gives a global view of the indexes
 * defined on a given backend.
 *
 */
public class IndexTableModel extends AbstractIndexTableModel
{

  private static final long serialVersionUID = 6979651281772979301L;

  /**
   * {@inheritDoc}
   */
  protected String[] getColumnNames()
  {
    return new String[] {
        getHeader(INFO_CTRL_PANEL_INDEXES_HEADER_ATTRIBUTE.get(), 30),
        getHeader(INFO_CTRL_PANEL_INDEXES_HEADER_ENTRY_LIMIT.get(), 30),
        getHeader(INFO_CTRL_PANEL_INDEXES_HEADER_INDEX_TYPES.get(), 30),
        getHeader(INFO_CTRL_PANEL_INDEXES_HEADER_REQUIRES_REBUILD.get(), 30)
    };
  }

  /**
   * Comparable implementation.
   * @param index1 the first index descriptor to compare.
   * @param index2 the second index descriptor to compare.
   * @return 1 if according to the sorting options set by the user the first
   * index descriptor must be put before the second descriptor, 0 if they
   * are equivalent in terms of sorting and -1 if the second descriptor must
   * be put before the first descriptor.
   */
  public int compare(AbstractIndexDescriptor index1,
      AbstractIndexDescriptor index2)
  {
    int result;
    IndexDescriptor i1 = (IndexDescriptor)index1;
    IndexDescriptor i2 = (IndexDescriptor)index2;

    int[] possibleResults = {compareNames(i1, i2), compareEntryLimits(i1, i2),
        compareTypes(i1, i2), compareRebuildRequired(i1, i2)};
    result = possibleResults[sortColumn];
    if (result == 0)
    {
      for (int i : possibleResults)
      {
        if (i != 0)
        {
          result = i;
          break;
        }
      }
    }
    if (!sortAscending)
    {
      result = -result;
    }
    return result;
  }

  /**
   * {@inheritDoc}
   */
  protected String[] getLine(AbstractIndexDescriptor index)
  {
    IndexDescriptor i = (IndexDescriptor)index;
    return new String[] {
      i.getName(), getEntryLimitValue(i), getIndexTypeString(i),
      getRebuildRequiredString(i).toString()
    };
  }

  /**
   * Returns the String representing the entry limit value of the index.
   * @return the String representing the entry limit value of the index.
   */
  private String getEntryLimitValue(IndexDescriptor i)
  {
    if (i.getEntryLimit() >= 0)
    {
      return String.valueOf(i.getEntryLimit());
    }
    else
    {
      return INFO_NOT_APPLICABLE_LABEL.get().toString();
    }
  }

  // Comparison methods.

  private int compareNames(IndexDescriptor i1, IndexDescriptor i2)
  {
    return i1.getName().compareTo(i2.getName());
  }

  private int compareEntryLimits(IndexDescriptor i1, IndexDescriptor i2)
  {
    return getEntryLimitValue(i1).compareTo(getEntryLimitValue(i2));
  }

  private int compareTypes(IndexDescriptor i1, IndexDescriptor i2)
  {
    return getIndexTypeString(i1).compareTo(getIndexTypeString(i2));
  }

  /**
   * Returns the String representation of the index type for the index.
   * @param index the index.
   * @return the String representation of the index type for the index.
   */
  private String getIndexTypeString(IndexDescriptor index)
  {
    StringBuilder sb = new StringBuilder();
    for (IndexType type : index.getTypes())
    {
      Message v;
      switch (type)
      {
      case SUBSTRING:
        v = INFO_CTRL_PANEL_INDEX_SUBSTRING.get();
        break;
      case ORDERING:
        v = INFO_CTRL_PANEL_INDEX_ORDERING.get();
        break;
      case PRESENCE:
        v = INFO_CTRL_PANEL_INDEX_PRESENCE.get();
        break;
      case EQUALITY:
        v = INFO_CTRL_PANEL_INDEX_EQUALITY.get();
        break;
      case APPROXIMATE:
        v = INFO_CTRL_PANEL_INDEX_APPROXIMATE.get();
        break;
      default:
        throw new RuntimeException("Unknown index type: "+type);
      }
      if (sb.length() > 0)
      {
        sb.append(", ");
      }
      sb.append(v);
    }
    if (sb.length() == 0)
    {
      sb.append(INFO_NOT_APPLICABLE_LABEL.get().toString());
    }
    return sb.toString();
  }
}
