Java Collections.emptyMap方法代码示例

import java.util.Collections; //导入方法依赖的package包/类
/**
 * Loads ProjectItems for a list of specified projectIds
 * @param projectIds a List of Ids of projects to load ProjectItems
 * @return a Map of ProjectItems to project IDs
 */
@Transactional(propagation = Propagation.MANDATORY)
public Map<Long, Set<ProjectItem>> loadProjectItemsByProjectIds(List<Long> projectIds) {
    if (projectIds.isEmpty()) {
        return Collections.emptyMap();
    }

    Long listId = daoHelper.createTempLongList(projectIds);
    return loadProjectItemsByList(listId);
}
 

import java.util.Collections; //导入方法依赖的package包/类
public void testCreateWithInvalidPattern() throws Exception {
    GrokProcessor.Factory factory = new GrokProcessor.Factory(Collections.emptyMap());
    Map<String, Object> config = new HashMap<>();
    config.put("field", "_field");
    config.put("patterns", Collections.singletonList("["));
    ElasticsearchParseException e = expectThrows(ElasticsearchParseException.class, () -> factory.create(null, null, config));
    assertThat(e.getMessage(), equalTo("[patterns] Invalid regex pattern found in: [[]. premature end of char-class"));
}
 

import java.util.Collections; //导入方法依赖的package包/类
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	EventAdmin ea = ServiceUtil.getService(EventAdmin.class);
	Event stepOver = new Event(EA_TOPIC_DEBUGGING_ACTION_RESUME, Collections.emptyMap());
	ea.sendEvent(stepOver);

	// has to be null (see javadoc)
	return null;
}
 

import java.util.Collections; //导入方法依赖的package包/类
private Map<String, String> getCookies(Cookie[] annotationCookies) {

        HashMap<String, String> cookies = new HashMap<>();

        for (Cookie annotationCookie : annotationCookies) {
            if (annotationCookie.name().isEmpty()) {
                return Collections.emptyMap();
            }
            cookies.put(annotationCookie.name(), annotationCookie.value());
        }
        return cookies;
    }
 

import java.util.Collections; //导入方法依赖的package包/类
private Map<String, String> getHeaders(Header[] annotationHeaders) {

        HashMap<String, String> headers = new HashMap<>();

        for (Header annotationHeader : annotationHeaders) {
            if (annotationHeader.name().isEmpty()) {
                return Collections.emptyMap();
            }
            headers.put(annotationHeader.name(), annotationHeader.value());
        }
        return headers;
    }
 

import java.util.Collections; //导入方法依赖的package包/类
@Override
public Map<String, byte[]> getAttributesMap() {
  if (attributes == null) {
    return Collections.emptyMap();
  }
  return Collections.unmodifiableMap(attributes);
}
 

import java.util.Collections; //导入方法依赖的package包/类
/** Constructor: Empty map param. */
@Test
public void emptyMapTest()
{
   SortedMap sorted_map = new SortedMap(Collections.emptyMap(), cmp);
   Assert.assertTrue(sorted_map.isEmpty());
   Assert.assertEquals(sorted_map.size(), 0);
   Assert.assertFalse(sorted_map.keySet().iterator().hasNext());
   Assert.assertFalse(sorted_map.values().iterator().hasNext());
   Assert.assertFalse(sorted_map.entrySet().iterator().hasNext());
}
 

import java.util.Collections; //导入方法依赖的package包/类
public void testCustomScriptContextSettings() throws Exception {
    ScriptService scriptService = makeScriptService();
    Script script = new Script(ScriptType.INLINE, MockScriptEngine.NAME, "1", Collections.emptyMap());
    try {
        scriptService.compile(script, new ScriptContext.Plugin(PLUGIN_NAME, "custom_exp_disabled_op"));
        fail("script compilation should have been rejected");
    } catch (IllegalStateException e) {
        assertTrue(e.getMessage(), e.getMessage().contains("scripts of type [inline], operation [" + PLUGIN_NAME + "_custom_exp_disabled_op] and lang [" + MockScriptEngine.NAME + "] are disabled"));
    }

    // still works for other script contexts
    assertNotNull(scriptService.compile(script, ScriptContext.Standard.AGGS));
    assertNotNull(scriptService.compile(script, ScriptContext.Standard.SEARCH));
    assertNotNull(scriptService.compile(script, new ScriptContext.Plugin(PLUGIN_NAME, "custom_op")));
}
 

import java.util.Collections; //导入方法依赖的package包/类
public TtmlSubtitle(TtmlNode root, Map<String, TtmlStyle> globalStyles,
    Map<String, TtmlRegion> regionMap) {
  this.root = root;
  this.regionMap = regionMap;
  this.globalStyles = globalStyles != null
      ? Collections.unmodifiableMap(globalStyles) : Collections.<String, TtmlStyle>emptyMap();
  this.eventTimesUs = root.getEventTimesUs();
}
 

import java.util.Collections; //导入方法依赖的package包/类
public Map<String, Object> getLastMessageTemplateModel()
{
    Object model = parameterValues.get(PARAM_TEMPLATE_MODEL);
    if (model instanceof Map)
    {
        return (Map<String, Object>) model;
    }
    else
    {
        String className = model == null ? "" : model.getClass().getName();
        LOGGER.warn("Skipping unsupported email template model parameters of type " + className);
    }
    return Collections.emptyMap();
}
 

import java.util.Collections; //导入方法依赖的package包/类
public MapExpression(int lineNumber) {
    this.entries = Collections.emptyMap();
    this.lineNumber = lineNumber;
}
 

import java.util.Collections; //导入方法依赖的package包/类
/**
 * @return the summon
 */
public Map<Integer, L2Summon> getServitors()
{
	return Collections.emptyMap();
}
 

import java.util.Collections; //导入方法依赖的package包/类
public Map<Long, List<CustomPing>> getPingsForGuild(IGuild guild) {
    if (storage == null) {
        return Collections.emptyMap();
    }
    return storage.get(guild);
}
 

import java.util.Collections; //导入方法依赖的package包/类
@Override
public Map<String, String> getExecutionProperties() {
    return Collections.emptyMap();
}
 

import java.util.Collections; //导入方法依赖的package包/类
private g(byte b) {
    this.a = Collections.emptyMap();
}