@Override
public void render(Writer out) throws TemplateException, IOException {
if (body == null) return;
TemplateDirectiveBodyOverrideWraper preOverridy =
(TemplateDirectiveBodyOverrideWraper) env.getVariable(DirectiveKit.OVERRIDE_CURRENT_NODE);
try {
env.setVariable(DirectiveKit.OVERRIDE_CURRENT_NODE, this);
body.render(out);
} finally {
env.setVariable(DirectiveKit.OVERRIDE_CURRENT_NODE, preOverridy);
}
}
public void execute(
Environment env, Map params, TemplateModel[] loopVars, TemplateDirectiveBody body)
throws TemplateException, IOException {
TemplateDirectiveBodyOverrideWraper current =
(TemplateDirectiveBodyOverrideWraper) env.getVariable(DirectiveUtils.OVERRIDE_CURRENT_NODE);
if (current == null) {
throw new TemplateException("<@super/> direction must be child of override", env);
}
TemplateDirectiveBody parent = current.parentBody;
if (parent == null) {
throw new TemplateException("not found parent for <@super/>", env);
}
parent.render(env.getOut());
}
/**
* 將要輸出的TemplateModel放到env的variable中
*
* @param env
* @param variables
* @return
* @throws TemplateException
*/
public Map<String, TemplateModel> addVariables(
Environment env, Map<String, TemplateModel> variables) throws TemplateException {
Map<String, TemplateModel> origVariables = new HashMap<String, TemplateModel>();
if (variables.size() <= 0) {
return origVariables;
}
//
for (Map.Entry<String, TemplateModel> entry : variables.entrySet()) {
String key = entry.getKey();
TemplateModel value = env.getVariable(key);
if (value != null) {
origVariables.put(key, value);
}
env.setVariable(key, entry.getValue());
}
return origVariables;
}
/**
* 获取变量
*
* @param name 名称
* @param env Environment
* @return 变量
*/
public static TemplateModel getVariable(String name, Environment env)
throws TemplateModelException {
Assert.hasText(name);
Assert.notNull(env);
return env.getVariable(name);
}
