Package de.odysseus.calyxo.control.conf.impl

Source Code of de.odysseus.calyxo.control.conf.impl.ActionConfigImpl

/*
* Copyright 2004, 2005, 2006 Odysseus Software GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package de.odysseus.calyxo.control.conf.impl;

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

import de.odysseus.calyxo.control.conf.ExceptionHandlerConfig;
import de.odysseus.calyxo.control.conf.ActionConfig;
import de.odysseus.calyxo.control.conf.DispatchesConfig;
import de.odysseus.calyxo.control.conf.DispatchConfig;
import de.odysseus.calyxo.control.conf.ExceptionHandlersConfig;

import de.odysseus.calyxo.base.conf.ConfigException;

/**
* Action configuration implementation.
*
* @author Christoph Beck
*/
public class ActionConfigImpl extends ParamsConfigImpl implements ActionConfig {
  private String path;
  private String className;
  private String dispatcher;
 
  private HashMap dispatchConfigs = new HashMap();
  private HashMap exceptionConfigs = new HashMap();
  private ArrayList filterConfigs = new ArrayList();

  private ExceptionHandlersConfig globalExceptions;
  private DispatchesConfig globalDispatches;


  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.base.conf.impl.ConfigImpl#_getDynamicAttributes()
   */
  protected String[] _getDynamicAttributes() {
    return new String[]{ "className" };
  }

  /**
   * Do the following:
   * <ul>
   <li>get global dispatches from 'control' element</li>
   <li>check if source attribute value is valid</li>
   <li>check if target attribute value is valid</li>
   <li>check if either type or target is set</li>
   <li>make sure our path does start with a slash</li>
   * </ul>
   */
  protected void _init() throws ConfigException {
    super._init();

    // initialize global dispatches and exceptions
    ControlConfigImpl control =
      (ControlConfigImpl)_getNearestAncestor(ControlConfigImpl.class);
    if (control != null) {
      globalDispatches = control.getDispatchesConfig();
      globalExceptions = control.getExceptionsConfig();
    }

    // make sure path is syntactically correct
    if (!path.startsWith("/")) {
      log.warn("Prepending '/' to action path '" + toInlineString() + "'");
      path = "/" + path;
    }
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.base.conf.impl.ConfigImpl#_getElementName()
   */
  protected String _getElementName() {
    return "action";
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.base.conf.impl.ConfigImpl#_addChildren(de.odysseus.calyxo.base.conf.impl.ConfigImpl.Elements)
   */
  protected void _addChildren(Elements list) {
    super._addChildren(list);
    list.add(getDispatchConfigs());
    list.add(getFilterConfigs());
    list.add(getExceptionHandlerConfigs());
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.base.conf.impl.ConfigImpl#_putAttributes(de.odysseus.calyxo.base.conf.impl.ConfigImpl.Attributes)
   */
  protected void _putAttributes(Attributes map) {
    super._putAttributes(map);
    map.put("path", path);
    map.put("type", className);
    map.put("dispatcher", dispatcher);
  }

  /**
   * Add dispatch
   */
  public void add(DispatchConfigImpl value) throws ConfigException {
    if (dispatchConfigs.containsKey(value.getName())) {
      throw new ConfigException("Duplicate dispatch name '" + value.getName() + "' in " + toInlineString());
    }
    dispatchConfigs.put(value.getName(), value);
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.control.conf.ActionConfig#findDispatchConfig(java.lang.String)
   */
  public DispatchConfig findDispatchConfig(String name) {
    DispatchConfig config = (DispatchConfig)dispatchConfigs.get(name);
    if (config == null && globalDispatches != null) {
      config = globalDispatches.getDispatchConfig(name);
    }
    return config;
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.control.conf.ActionConfig#getDispatchConfigs()
   */
  public Iterator getDispatchConfigs() {
    return dispatchConfigs.values().iterator();
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.control.conf.ActionConfig#getDispatchConfig(java.lang.String)
   */
  public DispatchConfig getDispatchConfig(String name) {
    return (DispatchConfig)dispatchConfigs.get(name);
  }

  /**
   * Add exception element.
   */
  public void add(ExceptionHandlerConfigImpl value) throws ConfigException {
    if (exceptionConfigs.containsKey(value.getType())) {
      throw new ConfigException("Duplicate exception type '" + value.getClassName() + "' in " + toInlineString());
    }
    exceptionConfigs.put(value.getType(), value);
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.control.conf.ActionConfig#getExceptionHandlerConfig(java.lang.String)
   */
  public ExceptionHandlerConfig getExceptionHandlerConfig(String type) {
    return (ExceptionHandlerConfig)exceptionConfigs.get(type);
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.control.conf.ActionConfig#findExceptionHandlerConfig(java.lang.Exception)
   */
  public ExceptionHandlerConfig findExceptionHandlerConfig(Exception exception) {
    ExceptionHandlerConfig config = null;
    Class type = exception.getClass();
    do {
      String name = type.getName();
      config = getExceptionHandlerConfig(name);
      if (config == null && globalExceptions != null) {
        config = globalExceptions.getExceptionHandlerConfig(name);
      }
      type = type.getSuperclass();
    } while (type != null && config == null);
    return config;
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.control.conf.ActionConfig#getExceptionHandlerConfigs()
   */
  public Iterator getExceptionHandlerConfigs() {
    return exceptionConfigs.values().iterator();
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.control.conf.ActionConfig#getPath()
   */
  public String getPath() {
    return path;
  }

  /**
   * Set action path
   */
  public void setPath(String string) {
    path = string;
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.control.conf.ActionConfig#getClassName()
   */
  public String getClassName() {
    return className;
  }

  /**
   * Set action class name
   */
  public void setClassName(String string) {
    className = string;
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.control.conf.ActionConfig#getDispatcher()
   */
  public String getDispatcher() {
    return dispatcher;
  }

  /**
   * Set dispatcher name
   */
  public void setDispatcher(String string) {
    dispatcher = string;
  }

  /*
   * (non-Javadoc)
   * @see de.odysseus.calyxo.control.conf.ActionConfig#getFilterConfigs()
   */
  public Iterator getFilterConfigs() {
    return filterConfigs.iterator();
  }

  /**
   * Add filter element
   */
  public void add(FilterConfigImpl value) throws ConfigException {
    filterConfigs.add(value);
  }
}
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