Examples of org.apache.commons.collections.map.LinkedMap

Package org.apache.commons.collections.map

Examples of org.apache.commons.collections.map.LinkedMap

org.apache.commons.collections.map.LinkedMap
A Map implementation that maintains the order of the entries. In this implementation order is maintained by original insertion.
This implementation improves on the JDK1.4 LinkedHashMap by adding the {@link org.apache.commons.collections.MapIterator MapIterator}functionality, additional convenience methods and allowing bidirectional iteration. It also implements OrderedMap. In addition, non-interface methods are provided to access the map by index.
The orderedMapIterator() method provides direct access to a bidirectional iterator. The iterators from the other views can also be cast to OrderedIterator if required.
All the available iterators can be reset back to the start by casting to ResettableIterator and calling reset().
The implementation is also designed to be subclassed, with lots of useful methods exposed. @since Commons Collections 3.0 @version $Revision: 1.9 $ $Date: 2004/02/18 01:13:19 $ @author Stephen Colebourne

  /**
   * Returns all the childcomponents of this component.
   * @return a map of the childcomponents under this component
   */
  public Map getChildren() {
    return Collections.unmodifiableMap(new LinkedMap(_getChildren()));
  }

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   * @param element contained element.
   * @param name element name
   * @throws Exception 
   */
  public void addElementAfter(String id, GenericFormElement element, String afterId) throws Exception {
    LinkedMap newElements = new LinkedMap();  
      
    if (!getElements().containsKey(afterId))
      throw new AraneaRuntimeException("The element '" + afterId + "' does not exist!");
    
    for (Iterator i = elements.entrySet().iterator(); i.hasNext();) {
        Map.Entry entry = (Map.Entry) i.next();
        
        newElements.put(entry.getKey(), entry.getValue());
        if (entry.getKey().equals(afterId)) {
          newElements.put(id, element);
        }
    }
    
    if (isInitialized())
      addWidget(id, element);

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   * @param element contained element.
   * @param name element name
   * @throws Exception 
   */
  public void addElementBefore(String id, GenericFormElement element, String beforeId) throws Exception {
    LinkedMap newElements = new LinkedMap();  
    
    if (!elements.containsKey(beforeId))
      throw new AraneaRuntimeException("The element '" + beforeId + "' does not exist!");
      
    for (Iterator i = elements.entrySet().iterator(); i.hasNext();) {
        Map.Entry entry = (Map.Entry) i.next();
        
        if (entry.getKey().equals(beforeId))
            newElements.put(id, element);
        newElements.put(entry.getKey(), entry.getValue());
    }
      
    if (isInitialized())
      addWidget(id, element);

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  /**
   * Returns an unmodifiable map of the children.
   */
  public Map getChildren() {
    return Collections.unmodifiableMap(new LinkedMap(_getChildren()));
  }

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  /**
   * Returns elements.
   * @return elements.
   */
  public Map getElements() {
    return new LinkedMap(elements);
  }

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  /**
   * Returns a unmodifiable map of all the child components under this Component.
   * @return a map of child components
   */
  public Map getChildren() {
    return Collections.unmodifiableMap(new LinkedMap(_getChildren()));
  }

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     * @param cacheSize
     */
    public ItemInfoCacheImpl(int cacheSize) {
        super();
        this.cacheSize = cacheSize;
        entries = new LinkedMap(cacheSize);
    }

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                    ("savepoint-flush-not-supported"));


            OpenJPASavepoint save = _spm.newSavepoint(name, this);
            if (_savepoints == null || _savepoints.isEmpty()) {
                save.save(getTransactionalStates());
                _savepoints = new LinkedMap();
            } else {
                if (_savepointCache == null)
                    save.save(Collections.EMPTY_LIST);
                else {
                    save.save(_savepointCache);

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    protected void assertParameters(StoreQuery q, StoreQuery.Executor ex, 
        Object[] params) {
        if (!q.requiresParameterDeclarations())
            return;


        LinkedMap paramTypes = ex.getParameterTypes(q);
        int typeCount = paramTypes.size();
        if (typeCount > params.length)
            throw new UserException(_loc.get("unbound-params",
                paramTypes.keySet()));


        Iterator itr = paramTypes.entrySet().iterator();
        Map.Entry entry;
        for (int i = 0; itr.hasNext(); i++) {
            entry = (Map.Entry) itr.next();
            if (((Class) entry.getValue()).isPrimitive() && params[i] == null)
                throw new UserException(_loc.get("null-primitive-param",

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    /**
     * Record the names and order of implicit parameters.
     */
    private Parameter getParameter(String id, boolean positional) {
        if (parameterTypes == null)
            parameterTypes = new LinkedMap(6);
        if (!parameterTypes.containsKey(id))
            parameterTypes.put(id, TYPE_OBJECT);


        Class type = Object.class;
        ClassMetaData meta = null;

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