Question

当我在ice中输入字符时，我正在尝试自动完成：selectInputText 我面临的问题是，当我输入字符时，它会带来与我输入的字符不匹配的名称。请参阅以下屏幕截图以供参考。

a http://s7.postimage.org/46jk4tka3/autocomplete.png

理想情况下，自动填充应仅显示结果中的第一行，但是它会显示与我键入的字符不匹配的行。

仅显示Abell Maryland 20606。

这是用于比较的代码，如何修改它以满足我的要求，即只显示与我输入的匹配的结果。

public int compare(Object o1, Object o2) {
        if (o1 instanceof SelectItem) {
            s1 = ((SelectItem) o1).getLabel();
        } else {
            s1 = o1.toString();
        }

        if (o2 instanceof SelectItem) {
            s2 = ((SelectItem) o2).getLabel();
        } else {
            s2 = o2.toString();
        }            
        return s1.compareToIgnoreCase(s2);
    }
};

我正在关注Icefaces的这个教程

http://wiki.icefaces.org/display/ICE/Auto-Complete

更新

我在autocomplete.jspx中的代码

 <ice:selectInputText rows="10" width="300"
                        listVar="emp"
                        valueChangeListener="#{mybean.updateList}"
                        listValue="#{mybean.list}">
                         <f:facet name="selectInputText">
                   <ice:panelGrid columns="3" columnClasses="empNameCol">
                         <ice:outputText value="#{emp.empName}"/>                         
                   </ice:panelGrid>

方法updateList

public void updateList(ValueChangeEvent event) {

    setMatches(event);

    if (event.getComponent() instanceof SelectInputText) {
        SelectInputText autoComplete = (SelectInputText)event.getComponent();
        if (autoComplete.getSelectedItem() != null) {
            bean = (Bean)autoComplete.getSelectedItem().getValue();
        }            
        else {
            Bean tempCity = getMatch(autoComplete.getValue().toString());
            if (tempCity != null) {
                bean = tempCity;
            }
        }
    }
}

方法setMatches

private void setMatches(ValueChangeEvent event) {

Object searchWord = event.getNewValue();
int maxMatches = ((SelectInputText)event.getComponent()).getRows();
List matchList = new ArrayList(maxMatches);

try {
    int insert = 
        Collections.binarySearch(dictionary, searchWord, AutoCompleteDictionary.LABEL_COMPARATOR);            
    if (insert < 0) {
        insert = Math.abs(insert) - 1;
    }

    for (int i = 0; i < maxMatches; i++) {                                
        if ((insert + i) >= dictionary.size() || i >= maxMatches) {
            break;
        }
        matchList.add(dictionary.get(insert + i));
    }
} catch (Throwable e) {
    e.printStackTrace();
    logger.error("Erorr finding autocomplete matches" + e.getMessage());
}        
if (this.matchesList != null) {
    this.matchesList.clear();
    this.matchesList = null;
}
this.matchesList = matchList;

}

更新2

修改后的setMatches方法

 private void setMatches(ValueChangeEvent event) {
        Object searchWord = event.getNewValue();
        int maxMatches = ((SelectInputText) event.getComponent()).getRows();
        List matchList = new ArrayList(maxMatches);
         try {
             for(int i = 0; i < dictionary.size(); i++) {
                 SelectItem s = (SelectItem)dictionary.get(i);
                 if(s.getLabel().startsWith(searchWord.toString())) {
                     matchList.add(s);
                     if(matchList.size() == maxMatches)
                         break;
                 }   
             }
         } catch (Throwable e) {
             e.printStackTrace();
             logger.error("Erorr finding autocomplete matches" + e.getMessage());
         }        
         if (this.matchesList != null) {
             this.matchesList.clear();
             this.matchesList = null;
         }
         this.matchesList = matchList;
         }

Answer 1

您必须更新SelectItems列表。您只需过滤列表（或创建仅包含匹配项的新列表），而不仅仅是对列表进行操作。下次自动完成列表呈现时，它将再次评估绑定列表。

icefaces教程附有一些资料（下图）。看看AutoCompleteBean。方法updateList(ValueChangeEvent e)调用setMatches(e)。在此方法中，列表将分配一个新列表。

// assign new matchList
if (this.matchesList != null) {
   this.matchesList.clear();
   this.matchesList = null;
}
this.matchesList = matchList;

这会导致ui组件仅显示与输入匹配的项目。

总结：ice:selectInputList将始终显示其列表中包含的项目，因此请减少列表中的项目以仅显示相关项目。

此致

更新

private void setMatches(ValueChangeEvent event) {
Object searchWord = event.getNewValue();
int maxMatches = ((SelectInputText)event.getComponent()).getRows();
List matchList = new ArrayList(maxMatches);

try {
    for(int i = 0; i < dictionary.size(); i++) {
        SelectItem s = dictionary.get(i);
        if(s.getLabel().startsWith(searchWord)) {
            matchList.add(s);
            if(matchList.size() == maxMatches)
                break;
        }   
    }
} catch (Throwable e) {
    e.printStackTrace();
    logger.error("Erorr finding autocomplete matches" + e.getMessage());
}        
if (this.matchesList != null) {
    this.matchesList.clear();
    this.matchesList = null;
}
this.matchesList = matchList;
}

// note: not optimized, just to explain how to do.

更新2（简短版）

/**
 * Fills the suggestionList with the given luceneResult.
 *
 * @param suggestionList                 The list to fill.
 * @param luceneResult                   The previously computed luceneResult.
 */
private static void fillLookupSuggestionList(final List<SelectItem> suggestionList,
    LuceneResult luceneResult)
{
    suggestionList.clear();

    String searchQuery = luceneResult.getLuceneResultConfig().getSearchQuery(); 
    if (luceneResult.getResultSize() <= 0)
    {
        suggestionList.add(new SelectItem(null, BundleHelper.i18n(LuceneLookupController.BUNDLE,
            LuceneLookupController.NO_ITEM_FOUND)));
    }
    else
    {
        List<LuceneResultEntry> results = luceneResult.getResult();
        for (LuceneResultEntry entry : results)
        {
            suggestionList.add(new SelectItem(entry.getMetaInfo(),
                entry.getInfo().getDescription()));
        }
    }
}

自动填充无与伦比的结果

1 个答案: