templatecollector.java

来自「swing编写的库存管理程序。毕业设计类」· Java 代码 · 共 203 行

/**
 * ========================================
 * JFreeReport : a free Java report library
 * ========================================
 *
 * Project Info:  http://www.jfree.org/jfreereport/index.html
 * Project Lead:  Thomas Morgner;
 *
 * (C) Copyright 2000-2003, by Simba Management Limited and Contributors.
 *
 * 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.
 *
 * ----------------------
 * TemplateCollector.java
 * ----------------------
 * (C)opyright 2003, by Thomas Morgner and Contributors.
 *
 * Original Author:  Thomas Morgner;
 * Contributor(s):   David Gilbert (for Simba Management Limited);
 *
 * $Id: TemplateCollector.java,v 1.6 2003/08/25 14:29:33 taqua Exp $
 *
 * Changes (from 19-Feb-2003)
 * -------------------------
 * 19-Feb-2003 : Added standard header and Javadocs (DG);
 *
 */

package org.jfree.report.modules.parser.ext.factory.templates;

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

import org.jfree.report.filter.templates.Template;
import org.jfree.util.Configuration;

/**
 * A template collection.
 *
 * @author Thomas Morgner
 */
public class TemplateCollector extends TemplateCollection
{
  /** Storage for the factories. */
  private final ArrayList factories;

  /**
   * Creates a new template collector.
   */
  public TemplateCollector()
  {
    factories = new ArrayList();
  }

  /**
   * Adds a template collection.
   *
   * @param tc  the template collection.
   */
  public void addTemplateCollection(final TemplateCollection tc)
  {
    factories.add(tc);
    if (getConfig() != null)
    {
      tc.configure(getConfig());
    }
  }

  /**
   * Returns an iterator that provides access to the factories.
   *
   * @return The iterator.
   */
  public Iterator getFactories()
  {
    return factories.iterator();
  }

  /**
   * Returns a template description.
   *
   * @param name  the name.
   *
   * @return The template description.
   */
  public TemplateDescription getTemplate(final String name)
  {
    for (int i = 0; i < factories.size(); i++)
    {
      final TemplateCollection fact = (TemplateCollection) factories.get(i);
      final TemplateDescription o = fact.getTemplate(name);
      if (o != null)
      {
        return o;
      }
    }
    return super.getTemplate(name);
  }

  /**
   * Returns a template description.
   *
   * @param template  the template.
   *
   * @return The description.
   */
  public TemplateDescription getDescription(final Template template)
  {
    for (int i = 0; i < factories.size(); i++)
    {
      final TemplateCollection fact = (TemplateCollection) factories.get(i);
      final TemplateDescription o = fact.getDescription(template);
      if (o != null)
      {
        return o;
      }
    }
    return super.getDescription(template);
  }

  /**
   * Configures this factory. The configuration contains several keys and
   * their defined values. The given reference to the configuration object
   * will remain valid until the report parsing or writing ends.
   * <p>
   * The configuration contents may change during the reporting.
   *
   * @param config the configuration, never null
   */
  public void configure(final Configuration config)
  {
    if (getConfig() != null)
    {
      // already configured ...
      return;
    }
    super.configure(config);

    final Iterator it = factories.iterator();
    while (it.hasNext())
    {
      final TemplateCollection od = (TemplateCollection) it.next();
      od.configure(config);
    }

  }

  /**
   * Indicated whether an other object is equal to this one.
   * @see java.lang.Object#equals(java.lang.Object)
   *
   * @param o the other object.
   * @return true, if the object is equal, false otherwise.
   */
  public boolean equals(final Object o)
  {
    if (this == o)
    {
      return true;
    }
    if (!(o instanceof TemplateCollector))
    {
      return false;
    }
    if (!super.equals(o))
    {
      return false;
    }

    final TemplateCollector templateCollector = (TemplateCollector) o;

    if (!factories.equals(templateCollector.factories))
    {
      return false;
    }

    return true;
  }

  /**
   * Computes an hashcode for this factory.
   * @see java.lang.Object#hashCode()
   *
   * @return the hashcode.
   */
  public int hashCode()
  {
    int result = super.hashCode();
    result = 29 * result + factories.hashCode();
    return result;
  }
}