Example usage for java.util Collections emptyMap

List of usage examples for java.util Collections emptyMap

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Introduction

In this page you can find the example usage for java.util Collections emptyMap.

Prototype

@SuppressWarnings("unchecked")
public static final <K, V> Map<K, V> emptyMap()

Source Link

Document

Returns an empty map (immutable).

Usage

From source file:com.mome.main.netframe.volley.toolbox.BasicNetwork.java

@Override
public NetworkResponse performRequest(Request<?> request) throws VolleyError {
    long requestStart = SystemClock.elapsedRealtime();
    while (request.getRetryPolicy().isRetry()) {
        HttpResponse httpResponse = null;
        byte[] responseContents = null;
        Map<String, String> responseHeaders = Collections.emptyMap();
        try {/*ww  w .j a  v  a 2 s  . com*/
            // Gather headers.
            Map<String, String> headers = new HashMap<String, String>();
            addCacheHeaders(headers, request.getCacheEntry());
            httpResponse = mHttpStack.performRequest(request, headers);
            StatusLine statusLine = httpResponse.getStatusLine();
            int statusCode = statusLine.getStatusCode();

            responseHeaders = convertHeaders(httpResponse.getAllHeaders());

            if (request.getCacheTime() != 0) {
                responseHeaders.put("Cache-Control", "max-age=" + request.getCacheTime());
            }

            // Handle cache validation.
            if (statusCode == HttpStatus.SC_NOT_MODIFIED) {

                Entry entry = request.getCacheEntry();
                if (entry == null) {
                    return new NetworkResponse(HttpStatus.SC_NOT_MODIFIED, null, responseHeaders, true,
                            SystemClock.elapsedRealtime() - requestStart);
                }

                // A HTTP 304 response does not have all header fields. We
                // have to use the header fields from the cache entry plus
                // the new ones from the response.
                // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.5
                entry.responseHeaders.putAll(responseHeaders);
                return new NetworkResponse(HttpStatus.SC_NOT_MODIFIED, entry.data, entry.responseHeaders, true,
                        SystemClock.elapsedRealtime() - requestStart);
            }

            // Some responses such as 204s do not have content.  We must check.
            if (httpResponse.getEntity() != null) {
                responseContents = entityToBytes(httpResponse.getEntity());
            } else {
                // Add 0 byte response as a way of honestly representing a
                // no-content request.
                responseContents = new byte[0];
            }

            // if the request is slow, log it.
            long requestLifetime = SystemClock.elapsedRealtime() - requestStart;
            logSlowRequests(requestLifetime, request, responseContents, statusLine);

            if (statusCode < 200 || statusCode > 299) {
                throw new IOException();
            }
            return new NetworkResponse(statusCode, responseContents, responseHeaders, false,
                    SystemClock.elapsedRealtime() - requestStart);
        } catch (SocketTimeoutException e) {
            attemptRetryOnException("socket", request, new TimeoutError());
        } catch (ConnectTimeoutException e) {
            attemptRetryOnException("connection", request, new TimeoutError());
        } catch (MalformedURLException e) {
            throw new RuntimeException("Bad URL " + request.getUrl(), e);
        } catch (IOException e) {
            int statusCode = 0;
            NetworkResponse networkResponse = null;
            if (httpResponse != null) {
                statusCode = httpResponse.getStatusLine().getStatusCode();
            } else {
                throw new NoConnectionError(e);
            }
            VolleyLog.e("Unexpected response code %d for %s", statusCode, request.getUrl());
            if (responseContents != null) {
                networkResponse = new NetworkResponse(statusCode, responseContents, responseHeaders, false,
                        SystemClock.elapsedRealtime() - requestStart);
                if (statusCode == HttpStatus.SC_UNAUTHORIZED || statusCode == HttpStatus.SC_FORBIDDEN) {
                    attemptRetryOnException("auth", request, new AuthFailureError(networkResponse));
                } else {
                    // TODO: Only throw ServerError for 5xx status codes.
                    throw new ServerError(networkResponse);
                }
            } else {
                throw new NetworkError(e);
            }
        }
    }
    throw new NetworkError(new Exception());
}

From source file:pl.edu.agh.samm.db.impl.MetricValueDAO.java

@Override
public List<IMetric> getKnownMetrics() {
    return getSimpleJdbcTemplate().query("SELECT DISTINCT metric_uri, resource_uri FROM metric_value",
            new ParameterizedRowMapper<IMetric>() {

                @Override//from   w  ww .j  av a 2s  .  c om
                public IMetric mapRow(ResultSet rs, int arg1) throws SQLException {
                    final String metricUri = rs.getString("metric_uri");
                    final String resourceUri = rs.getString("resource_uri");
                    return new Metric(metricUri, resourceUri);
                };
            }, Collections.emptyMap());
}

From source file:com.pscnlab.member.services.impl.MemberSeviceImpl.java

@Override
public Map<Integer, MemberPageDTO> findMemberWithRoleByIds(Set<Integer> memberIdsSet) {

    List<Member> members = memberDao.findListByMemberIdsSet(memberIdsSet);
    if (CollectionUtils.isEmpty(members)) {
        return Collections.emptyMap();
    }/*from  w  w  w  .j  a  va  2 s  .co m*/

    Set<Integer> roleIds = members.stream().map(Member::getUuidRole).collect(Collectors.toSet());
    Map<Integer, Role> roleMap = roleService.findMapByRoleIds(roleIds);

    Map<Integer, MemberPageDTO> memberPageDTOMap = Maps.newHashMap();
    for (Member result : members) {
        MemberPageDTO memberPageDTO = new MemberPageDTO();
        memberPageDTO.setRole(roleMap.get(result.getUuidRole()));
        memberPageDTO.setMember(result);
        memberPageDTOMap.put(result.getUuidMember(), memberPageDTO);
    }

    return memberPageDTOMap;
}

From source file:com.xwiki.authentication.Config.java

public Map<String, String> getMapParam(String name, char separator, Map<String, String> def,
        boolean forceLowerCaseKey, XWikiContext context) {
    Map<String, String> mappings = def;

    List<String> list = getListParam(name, separator, null, context);

    if (list != null) {
        if (list.isEmpty()) {
            mappings = Collections.emptyMap();
        } else {// w w  w. j  a  v a  2 s .c  om
            mappings = new LinkedHashMap<String, String>();

            for (String fieldStr : list) {
                int index = fieldStr.indexOf('=');
                if (index != -1) {
                    String key = fieldStr.substring(0, index);
                    String value = index + 1 == fieldStr.length() ? "" : fieldStr.substring(index + 1);

                    mappings.put(forceLowerCaseKey ? key.toLowerCase() : key, value);
                } else {
                    LOG.warn("Error parsing " + name + " attribute in xwiki.cfg: " + fieldStr);
                }
            }
        }
    }

    return mappings;
}

From source file:com.tweak.client.request.DeleteRequest.java

@Override
public Map<String, String> getHeaders() throws AuthFailureError {
    Map<String, String> headers = super.getHeaders();
    if (headers == null || headers.equals(Collections.emptyMap())) {
        headers = new HashMap<String, String>();
    }/*w w  w  .  ja  v a2 s  . c o  m*/
    if (apiHeaders != null && !apiHeaders.equals(Collections.emptyMap())) {
        headers.putAll(apiHeaders);
    }
    if (contentType != null) {
        headers.put("Content-Type", contentType);
    }

    return headers;
}

From source file:com.ss.android.apker.volley.toolbox.BasicNetwork.java

@Override
public NetworkResponse performRequest(Request<?> request) throws VolleyError {
    long requestStart = SystemClock.elapsedRealtime();
    while (true) {
        HttpResponse httpResponse = null;
        byte[] responseContents = null;
        Map<String, String> responseHeaders = Collections.emptyMap();
        try {//from  w ww. j  ava2  s  .c  o  m
            // Gather headers.
            Map<String, String> headers = new HashMap<String, String>();
            addCacheHeaders(headers, request.getCacheEntry());
            httpResponse = mHttpStack.performRequest(request, headers);
            StatusLine statusLine = httpResponse.getStatusLine();
            int statusCode = statusLine.getStatusCode();

            responseHeaders = convertHeaders(httpResponse.getAllHeaders());
            // Handle cache validation.
            if (statusCode == HttpStatus.SC_NOT_MODIFIED) {

                Entry entry = request.getCacheEntry();
                if (entry == null) {
                    return new NetworkResponse(HttpStatus.SC_NOT_MODIFIED, null, responseHeaders, true,
                            SystemClock.elapsedRealtime() - requestStart);
                }

                // A HTTP 304 response does not have all header fields. We
                // have to use the header fields from the cache entry plus
                // the new ones from the response.
                // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.5
                entry.responseHeaders.putAll(responseHeaders);
                return new NetworkResponse(HttpStatus.SC_NOT_MODIFIED, entry.data, entry.responseHeaders, true,
                        SystemClock.elapsedRealtime() - requestStart);
            }

            // Handle moved resources
            if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY
                    || statusCode == HttpStatus.SC_MOVED_TEMPORARILY) {
                String newUrl = responseHeaders.get("Location");
                request.setRedirectUrl(newUrl);
            }

            // Some responses such as 204s do not have content.  We must check.
            if (httpResponse.getEntity() != null) {
                responseContents = entityToBytes(httpResponse.getEntity());
            } else {
                // Add 0 byte response as a way of honestly representing a
                // no-content request.
                responseContents = new byte[0];
            }

            // if the request is slow, log it.
            long requestLifetime = SystemClock.elapsedRealtime() - requestStart;
            logSlowRequests(requestLifetime, request, responseContents, statusLine);

            if (statusCode < 200 || statusCode > 299) {
                throw new IOException();
            }
            return new NetworkResponse(statusCode, responseContents, responseHeaders, false,
                    SystemClock.elapsedRealtime() - requestStart);
        } catch (SocketTimeoutException e) {
            attemptRetryOnException("socket", request, new TimeoutError());
        } catch (ConnectTimeoutException e) {
            attemptRetryOnException("connection", request, new TimeoutError());
        } catch (MalformedURLException e) {
            throw new RuntimeException("Bad URL " + request.getUrl(), e);
        } catch (IOException e) {
            int statusCode = 0;
            NetworkResponse networkResponse = null;
            if (httpResponse != null) {
                statusCode = httpResponse.getStatusLine().getStatusCode();
            } else {
                throw new NoConnectionError(e);
            }
            if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY
                    || statusCode == HttpStatus.SC_MOVED_TEMPORARILY) {
                VolleyLog.e("Request at %s has been redirected to %s", request.getOriginUrl(),
                        request.getUrl());
            } else {
                VolleyLog.e("Unexpected response code %d for %s", statusCode, request.getUrl());
            }
            if (responseContents != null) {
                networkResponse = new NetworkResponse(statusCode, responseContents, responseHeaders, false,
                        SystemClock.elapsedRealtime() - requestStart);
                if (statusCode == HttpStatus.SC_UNAUTHORIZED || statusCode == HttpStatus.SC_FORBIDDEN) {
                    attemptRetryOnException("auth", request, new AuthFailureError(networkResponse));
                } else if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY
                        || statusCode == HttpStatus.SC_MOVED_TEMPORARILY) {
                    attemptRetryOnException("redirect", request, new RedirectError(networkResponse));
                } else {
                    // TODO: Only throw ServerError for 5xx status codes.
                    throw new ServerError(networkResponse);
                }
            } else {
                throw new NetworkError(e);
            }
        }
    }
}

From source file:com.ewgvip.buyer.android.volley.toolbox.BasicNetwork.java

@Override
public NetworkResponse performRequest(Request<?> request) throws VolleyError {
    long requestStart = SystemClock.elapsedRealtime();
    while (true) {
        HttpResponse httpResponse = null;
        byte[] responseContents = null;
        Map<String, String> responseHeaders = Collections.emptyMap();
        try {/* w  w w .  j  a va  2 s  .  co  m*/
            // Gather headers.
            Map<String, String> headers = new HashMap<String, String>();
            addCacheHeaders(headers, request.getCacheEntry());
            httpResponse = mHttpStack.performRequest(request, headers);
            StatusLine statusLine = httpResponse.getStatusLine();
            int statusCode = statusLine.getStatusCode();

            responseHeaders = convertHeaders(httpResponse.getAllHeaders());
            // Handle cache validation.
            if (statusCode == HttpStatus.SC_NOT_MODIFIED) {

                Entry entry = request.getCacheEntry();
                if (entry == null) {
                    return new NetworkResponse(HttpStatus.SC_NOT_MODIFIED, null, responseHeaders, true,
                            SystemClock.elapsedRealtime() - requestStart);
                }

                // A HTTP 304 response does not have all header fields. We
                // have to use the header fields from the cache entry plus
                // the new ones from the response.
                // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.5
                entry.responseHeaders.putAll(responseHeaders);
                return new NetworkResponse(HttpStatus.SC_NOT_MODIFIED, entry.data, entry.responseHeaders, true,
                        SystemClock.elapsedRealtime() - requestStart);
            }

            // Handle moved resources
            if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY
                    || statusCode == HttpStatus.SC_MOVED_TEMPORARILY) {
                String newUrl = responseHeaders.get("Location");
                request.setRedirectUrl(newUrl);
            }

            // Some responses such as 204s do not have content.  We must check.
            if (httpResponse.getEntity() != null) {
                responseContents = entityToBytes(httpResponse.getEntity());
            } else {
                // Add 0 byte response as a way of honestly representing a
                // no-content request.
                responseContents = new byte[0];
            }

            // if the request is slow, log it.
            long requestLifetime = SystemClock.elapsedRealtime() - requestStart;
            logSlowRequests(requestLifetime, request, responseContents, statusLine);

            if (statusCode < 200 || statusCode > 299) {
                throw new IOException();
            }
            return new NetworkResponse(statusCode, responseContents, responseHeaders, false,
                    SystemClock.elapsedRealtime() - requestStart);
        } catch (SocketTimeoutException e) {
            attemptRetryOnException("socket", request, new TimeoutError());
        } catch (ConnectTimeoutException e) {
            attemptRetryOnException("connection", request, new TimeoutError());
        } catch (MalformedURLException e) {
            throw new RuntimeException("Bad URL " + request.getUrl(), e);
        } catch (IOException e) {
            int statusCode = 0;
            NetworkResponse networkResponse = null;
            if (httpResponse != null) {
                statusCode = httpResponse.getStatusLine().getStatusCode();
            } else {
                throw new NoConnectionError(e);
            }
            if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY
                    || statusCode == HttpStatus.SC_MOVED_TEMPORARILY) {
                VolleyLog.e("Request at %s has been redirected to %s", request.getOriginUrl(),
                        request.getUrl());
            } else {
                VolleyLog.e("Unexpected response code %d for %s", statusCode, request.getUrl());
            }
            if (responseContents != null) {
                networkResponse = new NetworkResponse(statusCode, responseContents, responseHeaders, false,
                        SystemClock.elapsedRealtime() - requestStart);
                if (statusCode == HttpStatus.SC_UNAUTHORIZED || statusCode == HttpStatus.SC_FORBIDDEN) {
                    attemptRetryOnException("auth", request, new AuthFailureError(networkResponse));
                } else if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY
                        || statusCode == HttpStatus.SC_MOVED_TEMPORARILY) {
                    attemptRetryOnException("redirect", request, new AuthFailureError(networkResponse));
                } else {
                    // TODO: Only throw ServerError for 5xx status codes.
                    throw new ServerError(networkResponse);
                }
            } else {
                throw new NetworkError(networkResponse);
            }
        }
    }
}

From source file:com.spotify.styx.api.MiddlewaresTest.java

@Test
public void testJson() throws Exception {
    AsyncHandler<Response<ByteString>> outerHandler = Middlewares.json()
            .apply(rc -> Response.forPayload(TEST_STRUCT));

    CompletionStage<Response<ByteString>> completionStage = outerHandler.invoke(
            RequestContexts.create(Mockito.mock(Request.class), mock(Client.class), Collections.emptyMap()));

    MatcherAssert.assertThat(completionStage.toCompletableFuture().get().payload().get().utf8(),
            Is.is("{\"foo\":\"blah\"," + "\"inner_object\":{" + "\"field_name_convention\":\"bloh\","
                    + "\"enum_field\":\"enum_value\"}}"));
}

From source file:org.elasticsearch.xpack.ml.integration.DatafeedJobsRestIT.java

private void setupDataAccessRole(String index) throws IOException {
    String json = "{" + "  \"indices\" : [" + "    { \"names\": [\"" + index
            + "\"], \"privileges\": [\"read\"] }" + "  ]" + "}";

    client().performRequest("put", "_xpack/security/role/test_data_access", Collections.emptyMap(),
            new StringEntity(json, ContentType.APPLICATION_JSON));
}

From source file:com.create.security.oauth2.provider.token.SpringCacheTokenStoreImplTest.java

private OAuth2Authentication createOAuth2Authentication() {
    final OAuth2Request storedRequest = new OAuth2Request(Collections.emptyMap(), CLIENT_ID,
            Collections.<GrantedAuthority>emptyList(), true, Collections.<String>emptySet(),
            Collections.<String>emptySet(), null, Collections.<String>emptySet(),
            Collections.<String, Serializable>emptyMap());
    final User userDetails = new User(USER_NAME, PASSWORD, Collections.EMPTY_SET);
    final Authentication userAuthentication = new UsernamePasswordAuthenticationToken(userDetails, null);
    return new OAuth2Authentication(storedRequest, userAuthentication);
}