Examples of org.apache.commons.collections.SequencedHashMap

org.apache.commons.collections.SequencedHashMap
A map of objects whose mapping entries are sequenced based on the order in which they were added. This data structure has fast O(1) search time, deletion time, and insertion time.
Although this map is sequenced, it cannot implement {@link java.util.List} because of incompatible interface definitions.The remove methods in List and Map have different return values (see: {@link java.util.List#remove(Object)} and {@link java.util.Map#remove(Object)}).
This class is not thread safe. When a thread safe implementation is required, use {@link java.util.Collections#synchronizedMap(Map)} as it is documented,or use explicit synchronization controls. @deprecated Replaced by LinkedMap and ListOrderedMap in map subpackage. Due to be removed in v4.0. @see org.apache.commons.collections.map.LinkedMap @see org.apache.commons.collections.map.ListOrderedMap @since Commons Collections 2.0 @version $Revision: 1.28 $ $Date: 2004/02/18 01:15:42 $ @author Michael A. Smith @author Daniel Rall @author Henning P. Schmiedehausen @author Stephen Colebourne

   * @param map
   * @return
   */
  public static Map sortMapByValue(Map map)
  {
    Map result = new SequencedHashMap();
                
    ArrayList entries = new ArrayList(map.entrySet());
    Collections.sort(entries, new Comparator()
    {
      public int compare(Object o1, Object o2)
      {
        Map.Entry e1 = (Map.Entry) o1;
        Map.Entry e2 = (Map.Entry) o2;
        Comparable v1 = (Comparable) e1.getValue();
        Comparable v2 = (Comparable) e2.getValue();
        return v1.compareTo(v2);
      }
    });   
                    
    for (Iterator i = entries.iterator(); i.hasNext();)
    {
      Map.Entry me = (Map.Entry) i.next();
      result.put(me.getKey(), me.getValue());
    }
        
    return result;                     
  }

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    return res.toString();
  }


  public SequencedHashMap getMap()
  {
    SequencedHashMap newMap = new SequencedHashMap();
    Map contextData = getContextData();


    for (Iterator i = contextData.keySet().iterator(); i.hasNext();)
    {
      Object key = i.next();
      Object value = contextData.get(key);


      newMap.put(key, value);
    }


    return newMap;
  }

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            Map parameters = new HashMap();
            parameters.put("profiletype", "layout");
            parameters.put("objectmap", copletInstanceDataManager.getCopletInstanceData());


            Map map = new SequencedHashMap();
            map.put("base", this.profilesPath);
            map.put("portalname", service.getPortalName());
            map.put("profile", "layout");
            map.put("groupKey", layoutKey);


            adapter = (ProfileLS) this.manager.lookup(ProfileLS.ROLE);
            SourceValidity newValidity = adapter.getValidity(map, parameters);
            if (valid == SourceValidity.UNKNOWN)
            {

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            Map parameters = new HashMap();
            parameters.put("profiletype", "copletbasedata");
            parameters.put("objectmap", null);


            Map map = new SequencedHashMap();
            map.put("base", this.profilesPath);
            map.put("portalname", service.getPortalName());
            map.put("profile", "coplet");
            map.put("name", "basedata");
            CopletBaseDataManager copletBaseDataManager = (CopletBaseDataManager) adapter.loadProfile(map, parameters);


            //CopletData
            parameters.clear();
            parameters.put("profiletype", "copletdata");
            parameters.put("objectmap", copletBaseDataManager.getCopletBaseData());


            map.clear();
            map.put("base", this.profilesPath);
            map.put("portalname", service.getPortalName());
            map.put("profile", "coplet");
            map.put("name", "data");
            CopletDataManager copletDataManager = (CopletDataManager) adapter.loadProfile(map, parameters);


            //CopletInstanceData
            parameters.clear();
            parameters.put("profiletype", "copletinstancedata");
            parameters.put("objectmap", copletDataManager.getCopletData());


            map.clear();
            map.put("base", this.profilesPath);
            map.put("portalname", service.getPortalName());
            map.put("profile", "coplet");
            map.put("name", "instancedata");
            copletInstanceDataManager = (CopletInstanceDataManager) adapter.loadProfile(map, parameters);


            CopletFactory copletFactory = service.getComponentManager().getCopletFactory();
            Iterator iterator = copletDataManager.getCopletData().values().iterator();
            while (iterator.hasNext())

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            uri = config.getChild(profileType + "-role-" + postFix).getAttribute("uri");
        } else if (type.equals("user")) {
            uri = config.getChild(profileType + "-user-" + postFix).getAttribute("uri");
        }


        Map key = new SequencedHashMap();
        key.put("baseuri", uri);
        key.put("separator", "?");
        key.put("portal", service.getPortalName());
        key.put("layout", layoutKey);
        if ( type != null ) {
            key.put("type", type);
            if ( "role".equals(type) || "user".equals(type)) {
                key.put("role", handler.getContext().getContextInfo().get("role"));
            }
            if ( "user".equals(type) ) {
                key.put("user", handler.getUserId());
            }
        }
        return key;
    }

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    {
        String             elementClassName = collDef.getProperty(PropertyHelper.OJB_PROPERTY_ELEMENT_CLASS_REF);
        ClassDescriptorDef elementClassDef  = modelDef.getClass(elementClassName);
        String             fkFieldNames     = collDef.getProperty(PropertyHelper.OJB_PROPERTY_FOREIGNKEY);
        ArrayList          missingFields    = new ArrayList();
        SequencedHashMap   fkFields         = new SequencedHashMap();


        // first we gather all field names
        for (CommaListIterator it = new CommaListIterator(fkFieldNames); it.hasNext();)
        {
            String             fieldName = (String)it.next();
            FieldDescriptorDef fieldDef  = elementClassDef.getField(fieldName);


            if (fieldDef == null)
            {
                missingFields.add(fieldName);
            }
            fkFields.put(fieldName, fieldDef);
        }


        // next we traverse all sub types and gather fields as we go
        for (Iterator it = elementClassDef.getAllExtentClasses(); it.hasNext() && !missingFields.isEmpty();)
        {
            ClassDescriptorDef subTypeDef = (ClassDescriptorDef)it.next();


            for (int idx = 0; idx < missingFields.size();)
            {
                FieldDescriptorDef fieldDef = subTypeDef.getField((String)missingFields.get(idx));


                if (fieldDef != null)
                {
                    fkFields.put(fieldDef.getName(), fieldDef);
                    missingFields.remove(idx);
                }
                else
                {
                    idx++;
                }
            }
        }
        if (!missingFields.isEmpty())
        {
            throw new ConstraintException("Cannot find field "+missingFields.get(0).toString()+" in the hierarchy with root type "+
                                          elementClassDef.getName()+" which is used as foreignkey in collection "+
                                          collDef.getName()+" in "+collDef.getOwner().getName());
        }


        // copy the found fields into the element class
        ensureFields(elementClassDef, fkFields.values());
    }

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     * @param classDef The root of the hierarchy
     * @throws ConstraintException If there is a conflict between the pk fields 
     */
    private void ensurePKsFromHierarchy(ClassDescriptorDef classDef) throws ConstraintException
    {
        SequencedHashMap pks = new SequencedHashMap();


        for (Iterator it = classDef.getAllExtentClasses(); it.hasNext();)
        {
            ClassDescriptorDef subTypeDef = (ClassDescriptorDef)it.next();


            ArrayList subPKs = subTypeDef.getPrimaryKeys();


            // check against already present PKs
            for (Iterator pkIt = subPKs.iterator(); pkIt.hasNext();)
            {
                FieldDescriptorDef fieldDef   = (FieldDescriptorDef)pkIt.next();
                FieldDescriptorDef foundPKDef = (FieldDescriptorDef)pks.get(fieldDef.getName());


                if (foundPKDef != null)
                {
                    if (!isEqual(fieldDef, foundPKDef))
                    {
                        throw new ConstraintException("Cannot pull up the declaration of the required primary key "+fieldDef.getName()+
                                                      " because its definitions in "+fieldDef.getOwner().getName()+" and "+
                                                      foundPKDef.getOwner().getName()+" differ");
                    }
                }
                else
                {
                    pks.put(fieldDef.getName(), fieldDef);
                }
            }
        }


        ensureFields(classDef, pks.values());
    }

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            uri = config.getChild(profileType + "-role-" + postFix).getAttribute("uri");
        } else if (type.equals("user")) {
            uri = config.getChild(profileType + "-user-" + postFix).getAttribute("uri");
        }


        Map key = new SequencedHashMap();
        key.put("baseuri", uri);
        key.put("separator", "?");
        key.put("portal", service.getPortalName());
        key.put("layout", layoutKey);
        if ( type != null ) {
            key.put("type", type);
            if ( "role".equals(type) || "user".equals(type)) {
                key.put("role", handler.getContext().getContextInfo().get("role"));
            }
            if ( "user".equals(type) ) {
                key.put("user", handler.getUserId());
            }
        }
        return key;
    }

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        Configuration[] xPathChildren;


        for (int i = 0; i < children.length; i++) {
            // Check if there are XPath-Expressions configured
            xPathChildren = children[i].getChildren("xpath");
            Map xPathMap = new SequencedHashMap(11);


            for (int j = 0; j < xPathChildren.length; j++) {
                Configuration xPathChild = xPathChildren[j];


                String xPathName = xPathChild.getAttribute("name");
                CompiledExpression xPath = JXPathContext.compile(xPathChild.getAttribute("test"));


                xPathMap.put(xPathName, xPath);
            }
            if (xPathMap.size() > 0) {
                // store xpath - config if there is some
                exception2XPath.put(children[i].getAttribute("name", null),
                                    xPathMap);
            }
        }

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        if (map instanceof ListOrderedMap || map.getClass().getName().equals(ListOrderedMap.class.getName())) {
            Map newMap = new ListOrderedMap();
            newMap.putAll(map);
            return newMap;
        } else if (map instanceof SequencedHashMap || map.getClass().getName().equals(SequencedHashMap.class.getName())) {
            Map newMap = new SequencedHashMap();
            newMap.putAll(map);
            return newMap;
        } else {
            return super.copyMap(map);
        }
    }

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