Java Tapestry使用AJAX从可编辑网格更新DAO
我试图在Tapestry中完成以下工作 我有一本包含我的数据的字典 我试图实现我有一个下拉菜单选择组件,其中包含来自外部字典的键 当选择更改时,应使用所选子字典中的键和值更新网格 例如:Java Tapestry使用AJAX从可编辑网格更新DAO,java,ajax,dynamic,datagrid,tapestry,Java,Ajax,Dynamic,Datagrid,Tapestry,我试图在Tapestry中完成以下工作 我有一本包含我的数据的字典 我试图实现我有一个下拉菜单选择组件,其中包含来自外部字典的键 当选择更改时,应使用所选子字典中的键和值更新网格 例如: Dictionary<String, Dictionary<String, Object>> dictionaries = new Hashtable<String, Dictionary<String, Object>>(); Dictionary<St
Dictionary<String, Dictionary<String, Object>> dictionaries = new Hashtable<String, Dictionary<String, Object>>();
Dictionary<String, Object> dict1 = new Hashtable<String, Object>();
Dictionary<String, Object> dict2 = new Hashtable<String, Object>();
dict1.put("k1", "d1v1");
dict1.put("k2", "d1v2");
dict2.put("k1", "d2v1");
dict2.put("k2", "d2v2");
dictionaries.put("d1", dict1);
dictionaries.put("d2", dict2);
configValue是当前存在的条目的值,而不是我试图将其更改为的条目的值
有没有办法得到这个值?我的网格具有任意数量的行
编辑2:提供了更多信息
这是我的TML:
<t:form t:id="configSelectForm">
<t:select t:id="storageKeySelecter"
t:model="storageKeyModel"
t:value="storageKey"
zone="configZone" />
</t:form>
<br/>
<t:zone t:id="configZone" id="configZone" elementName="div">
<form t:type="form" t:id="configReviewForm" id="configReviewForm" t:zone="configZone" zone="configZone">
<table width="100%">
<t:grid t:source="configurationEntries"
t:add="update, delete"
t:row="configurationEntry"
t:mixins="DisableGridSorting"
t:include="configKey, configValue"
t:encoder="configurationEntryEncoder" >
<p:configValueCell>
<input t:id="configValueTextField" t:type="TextField" t:value="configurationEntry.configValue"
t:validate="required" />
</p:configValueCell>
<p:updateCell>
<t:actionlink id="update" t:id="update" zone="configZone" t:context="[configurationEntry.configKey, configurationEntry.configValue]">Update</t:actionlink>
</p:updateCell>
<p:deleteCell>
<t:actionlink id="delete" t:id="delete" zone="configZone" t:context="configurationEntry.configKey">Delete</t:actionlink>
</p:deleteCell>
</t:grid>
</table>
<br/>
<input type="submit" value="Update" class="button" zone="configZone"/>
</form>
</t:zone>
<br/>
<br/>
<t:form t:id="addNewEntryForm">
<table width="100%">
<tr>
<td>
<input t:id="newEntryKey" t:type="textfield" t:value="newEntry.configKey"
t:validate="required" t:context="newEntry.configKey" />
</td>
<td>
<input t:id="newEntryValue" t:type="textfield" t:value="newEntry.configValue"
t:validate="required" t:context="newEntry.configValue" />
</td>
<td>
<input type="submit" value="Add New Entry" zone="configZone"/>
</td>
</tr>
</table>
</t:form>
我想把key2的值改为newValue2传递给方法的参数是key2和value2,而不是key2和newValue2
同样的问题也是批量更新不起作用的原因。configurationEntries中的所有值都是数据库中的shapshot值,而不是当前写入我的网格中的值
所以,我的问题是如何使用AJAX从可编辑网格更新数据库,这是我的具体示例。我已经尝试了在SO和internet的其他部分上建议的许多方法,但它们似乎不起作用,我也不知道为什么。您需要使用zone参数
查看SelectZoneDemo.tml并从中选择ZoneDemo.java。它给出了一个在选择更改时更新分区的示例
对于更复杂的交互,您可能对感兴趣,您需要使用zone参数
查看SelectZoneDemo.tml并从中选择ZoneDemo.java。它给出了一个在选择更改时更新分区的示例
对于更复杂的交互,您可能有兴趣从需要提交表单的输入中获取实际值。当您使用ActionLink时,将使用其上下文中的值。这些值在链接呈现期间保存在上下文中,如果不进行黑客攻击,则无法在客户端进行更改 要使示例正常工作,可以对每行使用单独的表单。您还需要一些可以在表单之外工作的提交组件:
<t:zone t:id="configZone" id="configZone">
<table width="100%">
<t:grid t:source="configurationEntrySource"
t:add="update, delete"
t:row="configurationEntry"
t:mixins="DisableGridSorting"
t:include="configKey, configValue"
t:encoder="configurationEntryEncoder">
<p:configValueCell>
<t:form t:id="configReviewForm" zone="configZone">
<input t:id="value" t:type="TextField" t:value="configurationEntry.configValue"
t:validate="required" t:context="configurationEntry.configValue" />
</t:form>
</p:configValueCell>
<p:updateCell>
<t:customlinksubmit form="configReviewForm">Update</t:customlinksubmit>
</p:updateCell>
<p:deleteCell>
<t:actionlink t:id="delete" zone="configZone" context="configurationEntry.configKey">Delete</t:actionlink>
</p:deleteCell>
</t:grid>
</table>
<br/>
</t:zone>
要获得输入的实际值,您需要提交表单。当您使用ActionLink时,将使用其上下文中的值。这些值在链接呈现期间保存在上下文中,如果不进行黑客攻击,则无法在客户端进行更改 要使示例正常工作,可以对每行使用单独的表单。您还需要一些可以在表单之外工作的提交组件:
<t:zone t:id="configZone" id="configZone">
<table width="100%">
<t:grid t:source="configurationEntrySource"
t:add="update, delete"
t:row="configurationEntry"
t:mixins="DisableGridSorting"
t:include="configKey, configValue"
t:encoder="configurationEntryEncoder">
<p:configValueCell>
<t:form t:id="configReviewForm" zone="configZone">
<input t:id="value" t:type="TextField" t:value="configurationEntry.configValue"
t:validate="required" t:context="configurationEntry.configValue" />
</t:form>
</p:configValueCell>
<p:updateCell>
<t:customlinksubmit form="configReviewForm">Update</t:customlinksubmit>
</p:updateCell>
<p:deleteCell>
<t:actionlink t:id="delete" zone="configZone" context="configurationEntry.configKey">Delete</t:actionlink>
</p:deleteCell>
</t:grid>
</table>
<br/>
</t:zone>
我知道我需要使用zone参数。让我困惑的是如何连接两个不同的组件,Select和Grid,这样当Select更改时,Grid也会更改。尽管如此,第二个链接仍需向上投票:如果将网格放置在区域中,则网格将在区域刷新时更新。网格的数据源可能会受到select值的影响。您是否有代码片段或引用我可以搜索这些内容?有一些例子可以帮助我弄清楚东西吗?例子:我知道我需要使用zone参数。让我困惑的是如何连接两个不同的组件,Select和Grid,这样当Select更改时,Grid也会更改。尽管如此,第二个链接仍需向上投票:如果将网格放置在区域中,则网格将在区域刷新时更新。网格的数据源可能会受到select值的影响。您是否有代码片段或引用我可以搜索这些内容?有一些例子可以帮助我弄明白事情的来龙去脉吗?例如:不确定为什么你要在这里添加一个赏金,因为@nathanq提供了一个到jumpstart中一个运行演示的链接,其中包含代码?不确定为什么你要在这里添加赏金,因为@nathanq提供了到jumpstart中一个运行演示的链接,其中包含代码?
<t:form t:id="configSelectForm">
<t:select t:id="storageKeySelecter"
t:model="storageKeyModel"
t:value="storageKey"
zone="configZone" />
</t:form>
<br/>
<t:zone t:id="configZone" id="configZone" elementName="div">
<form t:type="form" t:id="configReviewForm" id="configReviewForm" t:zone="configZone" zone="configZone">
<table width="100%">
<t:grid t:source="configurationEntries"
t:add="update, delete"
t:row="configurationEntry"
t:mixins="DisableGridSorting"
t:include="configKey, configValue"
t:encoder="configurationEntryEncoder" >
<p:configValueCell>
<input t:id="configValueTextField" t:type="TextField" t:value="configurationEntry.configValue"
t:validate="required" />
</p:configValueCell>
<p:updateCell>
<t:actionlink id="update" t:id="update" zone="configZone" t:context="[configurationEntry.configKey, configurationEntry.configValue]">Update</t:actionlink>
</p:updateCell>
<p:deleteCell>
<t:actionlink id="delete" t:id="delete" zone="configZone" t:context="configurationEntry.configKey">Delete</t:actionlink>
</p:deleteCell>
</t:grid>
</table>
<br/>
<input type="submit" value="Update" class="button" zone="configZone"/>
</form>
</t:zone>
<br/>
<br/>
<t:form t:id="addNewEntryForm">
<table width="100%">
<tr>
<td>
<input t:id="newEntryKey" t:type="textfield" t:value="newEntry.configKey"
t:validate="required" t:context="newEntry.configKey" />
</td>
<td>
<input t:id="newEntryValue" t:type="textfield" t:value="newEntry.configValue"
t:validate="required" t:context="newEntry.configValue" />
</td>
<td>
<input type="submit" value="Add New Entry" zone="configZone"/>
</td>
</tr>
</table>
</t:form>
public class PropertyConfiguration {
@Inject
private BeanModelSource beanModelSource;
@Component
private Form configReviewForm;
@Property
private List<ConfigurationEntry> configurationEntries;
private List<ConfigurationEntry> persistentEntries;
@Property
private ConfigurationEntry configurationEntry = new ConfigurationEntry("", "");
@Property
private ConfigurationEntryEncoder configurationEntryEncoder;
@InjectComponent
private Zone configZone;
@InjectComponent
private TextField configValueTextField;
@Inject
private ConfigurationPersitanceDAO dao;
private GridDataSource dataSource;
@Inject
private Messages messages;
@Property
private ConfigurationEntry newEntry;
@Inject
private Request request;
@Property
@Validate("required")
@Persist(PersistenceConstants.SESSION)
private String storageKey;
private StringSelectModel storageKeysSelectModel;
public ValueEncoder<ConfigurationEntry> getConfigurationEntryEncoder() {
initConfigurationEntityEncoder();
return this.configurationEntryEncoder;
}
public BeanModel<ConfigurationEntry> getModel() {
return beanModelSource.createDisplayModel(ConfigurationEntry.class, messages);
}
public SelectModel getStorageKeyModel() {
if (storageKeysSelectModel == null) {
storageKeysSelectModel = new StringSelectModel(this.dao.getStorageKeys());
}
return storageKeysSelectModel;
}
private void initConfigurationEntityEncoder() {
if (this.configurationEntryEncoder == null) {
this.configurationEntryEncoder = new ConfigurationEntryEncoder(dao, storageKey);
}
}
private void initZoneData() {
if (this.storageKey == null) {
this.storageKey = this.dao.getStorageKeys().get(0);
}
initConfigurationEntityEncoder();
}
public Object onActionFromDelete(String configKey) {
System.out.println("Deleting from: " + storageKey + " entry: " + configKey);
this.dao.deleteConfigurationEntry(storageKey, configKey);
return request.isXHR() ? configZone.getBody() : null;
}
public Object onActionFromUpdate(String configKey, String configValue) {
this.dao.updateConfigurationEntry(storageKey, configKey, configValue);
return request.isXHR() ? configZone.getBody() : null;
}
void onActivate(String storageKey) {
initZoneData();
this.newEntry = new ConfigurationEntry("", "");
}
String onPassivate() {
this.newEntry = new ConfigurationEntry("", "");
return this.storageKey;
}
Object onRefresh() {
return request.isXHR() ? configZone.getBody() : null;
}
Object onSuccessFromAddNewEntryForm() {
String configKey = this.newEntry.getConfigKey();
String configValue = this.newEntry.getConfigValue();
this.dao.addConfigurationEntry(storageKey, configKey, configValue);
return request.isXHR() ? configZone.getBody() : null;
}
void onValidateFromAddNewEntryForm() {
return;
}
Object onValueChangedFromStorageKeySelecter(String storageKey) {
this.storageKey = storageKey;
initConfigurationEntityEncoder();
this.configurationEntries = wrap(this.dao.getConfiguration(storageKey));
return configZone.getBody();
}
private void updateChangedConfigurations(List<ConfigurationEntry> changedEntries) {
for (ConfigurationEntry changedEntry : changedEntries) {
String configKey = changedEntry.getConfigKey();
String configValue = changedEntry.getConfigValue();
System.out.println("Updated: [" + storageKey + ":" + configKey + ":" + configValue + "]");
this.dao.updateConfigurationEntry(storageKey, configKey, configValue);
}
}
void onValidateFromConfigReviewForm() {
this.persistentEntries = wrap(this.dao.getConfiguration(storageKey));
List<ConfigurationEntry> tmpList = new ArrayList<ConfigurationEntry>();
for (ConfigurationEntry newEntry : this.configurationEntries) {
for (ConfigurationEntry oldEntry : this.persistentEntries) {
System.out.println("NewEntry: " + newEntry.toString() + " vs. OldEntry: " + oldEntry.toString());
if (oldEntry.getConfigKey().equals(newEntry.getConfigKey())) {
if (!oldEntry.getConfigValue().equals(newEntry.getConfigValue())) {
newEntry.setConfigValue(newEntry.getConfigValue().trim());
tmpList.add(newEntry);
}
}
}
}
this.persistentEntries = tmpList;
}
Object onSuccessFromConfigReviewForm() {
updateChangedConfigurations(this.persistentEntries);
return request.isXHR() ? configZone.getBody() : null;
}
/**
* Wraps dictionary entries in instances of ConfigurationEntry
*/
private List<ConfigurationEntry> wrap(
Dictionary<String, Object> rawConfiguration) {
Set<String> keySet = new TreeSet<String>();
List<ConfigurationEntry> wrappedEntries = new ArrayList<ConfigurationEntry>();
Enumeration<String> keys = rawConfiguration.keys();
while (keys.hasMoreElements()) {
String key = keys.nextElement();
keySet.add(key);
}
for (String key : keySet) {
String value = (String) rawConfiguration.get(key);
ConfigurationEntry entry = new ConfigurationEntry(key, value);
wrappedEntries.add(entry);
}
return wrappedEntries;
}
}
key1 => value1
key2 => value2
key3 => value3
<t:zone t:id="configZone" id="configZone">
<table width="100%">
<t:grid t:source="configurationEntrySource"
t:add="update, delete"
t:row="configurationEntry"
t:mixins="DisableGridSorting"
t:include="configKey, configValue"
t:encoder="configurationEntryEncoder">
<p:configValueCell>
<t:form t:id="configReviewForm" zone="configZone">
<input t:id="value" t:type="TextField" t:value="configurationEntry.configValue"
t:validate="required" t:context="configurationEntry.configValue" />
</t:form>
</p:configValueCell>
<p:updateCell>
<t:customlinksubmit form="configReviewForm">Update</t:customlinksubmit>
</p:updateCell>
<p:deleteCell>
<t:actionlink t:id="delete" zone="configZone" context="configurationEntry.configKey">Delete</t:actionlink>
</p:deleteCell>
</t:grid>
</table>
<br/>
</t:zone>
@SupportsInformalParameters
public class CustomLinkSubmit implements ClientElement {
@Parameter(required = true, allowNull = false, defaultPrefix = BindingConstants.COMPONENT)
private Form form;
@Parameter(allowNull = false, defaultPrefix = BindingConstants.LITERAL)
private SubmitMode mode = SubmitMode.NORMAL;
@Inject
private ComponentResources resources;
@Inject
private JavaScriptSupport javascriptSupport;
private String clientId;
@BeginRender
void beginRender(MarkupWriter writer) {
clientId = javascriptSupport.allocateClientId(resources);
writer.element("span", "id", clientId);
resources.renderInformalParameters(writer);
}
@AfterRender
void afterRender(MarkupWriter writer) {
writer.end();
JSONObject spec = new JSONObject()
.put("form", form.getClientId())
.put("clientId", clientId)
.put("validate", mode == SubmitMode.NORMAL);
javascriptSupport.addInitializerCall(InitializationPriority.EARLY, "linkSubmit", spec);
}
public String getClientId() {
return clientId;
}
}