Example usage for java.util ArrayList isEmpty

List of usage examples for java.util ArrayList isEmpty

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Introduction

In this page you can find the example usage for java.util ArrayList isEmpty.

Prototype

public boolean isEmpty()

Source Link

Document

Returns true if this list contains no elements.

Usage

From source file:com.cloudera.impala.planner.PlannerTestBase.java

/**
 * Produces the single-node or distributed plan for testCase and compares the
 * actual/expected plans if the corresponding test section exists in testCase.
 *
 * Returns the produced exec request or null if there was an error generating
 * the plan./*from   ww  w .  j av  a  2 s.  c  o  m*/
 */
private TExecRequest testPlan(TestCase testCase, Section section, TQueryCtx queryCtx, StringBuilder errorLog,
        StringBuilder actualOutput) {
    String query = testCase.getQuery();
    queryCtx.request.setStmt(query);
    if (section == Section.PLAN) {
        queryCtx.request.getQuery_options().setNum_nodes(1);
    } else {
        // for distributed and parallel execution we want to run on all available nodes
        queryCtx.request.getQuery_options().setNum_nodes(ImpalaInternalServiceConstants.NUM_NODES_ALL);
    }
    if (section == Section.PARALLELPLANS) {
        queryCtx.request.query_options.mt_num_cores = 2;
    }
    ArrayList<String> expectedPlan = testCase.getSectionContents(section);
    boolean sectionExists = expectedPlan != null && !expectedPlan.isEmpty();
    String expectedErrorMsg = getExpectedErrorMessage(expectedPlan);

    StringBuilder explainBuilder = new StringBuilder();
    TExecRequest execRequest = null;
    if (sectionExists)
        actualOutput.append(section.getHeader() + "\n");
    try {
        execRequest = frontend_.createExecRequest(queryCtx, explainBuilder);
    } catch (NotImplementedException e) {
        if (!sectionExists)
            return null;
        handleNotImplException(query, expectedErrorMsg, errorLog, actualOutput, e);
    } catch (Exception e) {
        errorLog.append(
                String.format("Query:\n%s\nError Stack:\n%s\n", query, ExceptionUtils.getStackTrace(e)));
    }
    // No expected plan was specified for section. Skip expected/actual comparison.
    if (!sectionExists)
        return execRequest;
    // Failed to produce an exec request.
    if (execRequest == null)
        return null;

    String explainStr = removeExplainHeader(explainBuilder.toString());
    actualOutput.append(explainStr);
    LOG.info(section.toString() + ":" + explainStr);
    if (expectedErrorMsg != null) {
        errorLog.append(String.format("\nExpected failure, but query produced %s.\nQuery:\n%s\n\n%s:\n%s",
                section, query, section, explainStr));
    } else {
        String planDiff = TestUtils.compareOutput(Lists.newArrayList(explainStr.split("\n")), expectedPlan,
                true, true);
        if (!planDiff.isEmpty()) {
            errorLog.append(String.format("\nSection %s of query:\n%s\n\n%s", section, query, planDiff));
            // Append the VERBOSE explain plan because it contains details about
            // tuples/sizes/cardinality for easier debugging.
            String verbosePlan = getVerboseExplainPlan(queryCtx);
            errorLog.append("\nVerbose plan:\n" + verbosePlan);
        }
    }
    return execRequest;
}

From source file:com.silverwrist.venice.conf.impl.ConferenceManager.java

public List getConferences(DynamoUser user, VeniceCommunity comm) throws DatabaseException {
    boolean show_hidden = false;
    try { // do we want to show hidden conferences?
        show_hidden = comm.getAcl().testPermission(user, ConfNamespaces.PERMISSIONS_NAMESPACE, "see.hidden");

    } // end try//from  ww w  . ja v a  2s  . co  m
    catch (AclNotFoundException e) { // convert the AclNotFoundException
        DatabaseException de = new DatabaseException(ConferenceManager.class, "ConferenceMessages",
                "no.community.acl", e);
        de.setParameter(0, comm.getName());
        throw de;

    } // end catch

    List in_list = m_ops.getConferences(comm.getCID());
    if (in_list.isEmpty())
        return Collections.EMPTY_LIST;

    ArrayList rc = new ArrayList();
    Iterator it = in_list.iterator();
    while (it.hasNext()) { // get each data element and convert it
        Map d = (Map) (it.next());
        if (show_hidden || !(((Boolean) (d.get(ConferenceManagerOps.KEY_HIDE))).booleanValue())) { // skip hidden conferences if we don't have the "show hidden" permission
            ConferenceImpl conf = loadConference(d);
            rc.add(new LinkedConferenceImpl(m_ops.getLinkedConferenceOps(), conf, comm, m_srm, d));

        } // end if

    } // end while

    if (rc.isEmpty())
        return Collections.EMPTY_LIST;
    rc.trimToSize();
    return Collections.unmodifiableList(rc);

}

From source file:com.snaplogic.snaps.firstdata.Create.java

private ObjectSchema getSchema(SchemaProvider provider, Class<?> classType, SnapType snapType) {
    ArrayList<Method> getterMethods = findGetters(classType);
    ObjectSchema schema = null;/* w w  w .j ava  2 s  .co m*/
    if (!getterMethods.isEmpty()) {
        schema = provider.createSchema(snapType, classType.getSimpleName());
    }
    String name;
    String paramType;
    Class<?> subClass;
    Class<?> fieldTypeParameterType;
    ObjectSchema subSchema;
    ParameterizedType fieldGenericType;
    for (Method method : getterMethods) {
        try {
            paramType = method.getReturnType().getName();
            if (paramType.startsWith(FD_PROXY_PKG_PREFIX) && !paramType.endsWith(TYPE)) {
                try {
                    subClass = Class.forName(paramType);
                } catch (ClassNotFoundException e) {
                    log.error(e.getMessage(), e);
                    throw new ExecutionException(e.getMessage());
                }
                subSchema = getSchema(provider, subClass, SnapType.STRING);
                if (subSchema != null) {
                    schema.addChild(subSchema);
                }
            } else if (paramType.endsWith(List.class.getSimpleName())) {
                fieldGenericType = (ParameterizedType) method.getGenericReturnType();
                fieldTypeParameterType = (Class<?>) fieldGenericType.getActualTypeArguments()[0];
                if (fieldTypeParameterType == String.class) {
                    subSchema = provider.createSchema(SnapType.COMPOSITE, getFieldName(method.getName()));
                } else {
                    subSchema = getSchema(provider, fieldTypeParameterType, SnapType.COMPOSITE);
                }
                if (subSchema != null) {
                    schema.addChild(subSchema);
                }
            } else {
                name = getFieldName(method.getName());
                schema.addChild(provider.createSchema(getDataTypes(paramType), name));
            }
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            return null;
        }
    }
    return schema;
}

From source file:org.eclipse.lyo.testsuite.oslcv2.cm.ChangeRequestJsonTests.java

@Parameters
public static Collection<Object[]> getAllDescriptionUrls() throws IOException, NullPointerException,
        XPathException, ParserConfigurationException, SAXException, JSONException {
    //Checks the ServiceProviderCatalog at the specified baseUrl of the REST service in order to grab all urls
    //to other ServiceProvidersCatalogs contained within it, recursively, in order to find the URLs of all
    //query factories of the REST service.

    ArrayList<String> serviceUrls = getServiceProviderURLsUsingJson(setupProps.getProperty("baseUri"),
            onlyOnce);/*w  w  w.jav  a2  s . co  m*/

    ArrayList<String> capabilityURLsUsingJson = getCapabilityURLsUsingJson(OSLCConstants.QUERY_BASE_PROP,
            serviceUrls, true);

    String where = setupProps.getProperty("changeRequestsWhere");
    if (where == null) {
        String queryProperty = setupProps.getProperty("queryEqualityProperty");
        String queryPropertyValue = setupProps.getProperty("queryEqualityValue");
        where = queryProperty + "=\"" + queryPropertyValue + "\"";
    }

    String additionalParameters = setupProps.getProperty("queryAdditionalParameters");
    String query = (additionalParameters.length() == 0) ? "?" : "?" + additionalParameters + "&";
    query = query + "oslc.where=" + URLEncoder.encode(where, "UTF-8") + "&oslc.pageSize=1";

    ArrayList<String> results = new ArrayList<String>();
    for (String queryBaseUri : capabilityURLsUsingJson) {

        String queryUrl = OSLCUtils.addQueryStringToURL(queryBaseUri, query);

        HttpResponse resp = OSLCUtils.getResponseFromUrl(setupBaseUrl, queryUrl, basicCreds,
                OSLCConstants.CT_JSON, headers);

        String respBody = EntityUtils.toString(resp.getEntity());

        // Parse the response
        JSONArtifact userData = null;
        try {
            userData = JSON.parse(respBody);
        } catch (JSONException e) {
            // parsing error - we imply the response is not in JSON format

        }

        JSONObject resultJson = null;
        if (userData instanceof JSONArtifact) {
            resultJson = (JSONObject) userData;
        }

        JSONArray s = null;
        if (resultJson.containsKey("oslc:results")) {
            s = (JSONArray) resultJson.get("oslc:results");
        } else if (resultJson.containsKey("rdfs:member")) {
            s = (JSONArray) resultJson.getJSONArray("rdfs:member");
        }

        JSONObject r = (JSONObject) s.get(0);
        String one = null;

        if (r.containsKey("rdf:resource")) {
            one = r.getString("rdf:resource");
        } else if (r.containsKey("rdf:about")) {
            one = r.getString("rdf:about");
        }

        results.add(one);

        if (!results.isEmpty() && onlyOnce)
            break;
    }

    return toCollection(results);
}

From source file:com.mohamnag.inappbilling.InAppBillingPlugin.java

/**
 * Loads products with specific IDs and gets their details.
 *
 * @param productIds/* w w  w.j  a  v  a 2  s  . c  o m*/
 * @param callbackContext
 */
private void loadProductDetails(final ArrayList<String> productIds, final CallbackContext callbackContext)
        throws JSONException {

    jsLog("loadProductDetails called.");

    if (productIds == null || productIds.isEmpty()) {
        jsLog("Product list was empty");
        callbackContext.success(myInventory.getAllProductsJSON());
    } else {
        jsLog("Loading/refreshing product details");

        Bundle querySkus = new Bundle();
        querySkus.putStringArrayList("ITEM_ID_LIST", productIds);

        // do same query with both types to load all!
        Error errInapp = querySkuDetails(querySkus, BILLING_ITEM_TYPE_INAPP);
        Error errSubs = querySkuDetails(querySkus, BILLING_ITEM_TYPE_SUBS);

        // only call success if no error has happened
        if (errInapp != null) {
            callbackContext.error(errInapp.toJavaScriptJSON());
        } else if (errSubs != null) {
            callbackContext.error(errSubs.toJavaScriptJSON());
        } else {
            callbackContext.success(myInventory.getAllProductsJSON());
        }

    }
}

From source file:com.predic8.membrane.core.transport.http.ConnectionManager.java

private int closeOldConnections() {
    ArrayList<ConnectionKey> toRemove = new ArrayList<ConnectionKey>();
    ArrayList<Connection> toClose = new ArrayList<Connection>();
    long now = System.currentTimeMillis();
    log.trace("closing old connections");
    int closed = 0, remaining;
    synchronized (this) {
        // close connections after their timeout
        for (Map.Entry<ConnectionKey, ArrayList<OldConnection>> e : availableConnections.entrySet()) {
            ArrayList<OldConnection> l = e.getValue();
            for (int i = 0; i < l.size(); i++) {
                OldConnection o = l.get(i);
                if (o.deathTime < now) {
                    // replace [i] by [last]
                    if (i == l.size() - 1)
                        l.remove(i);/*from w  w  w  .  ja v a2s.  c  o  m*/
                    else
                        l.set(i, l.remove(l.size() - 1));
                    --i;
                    closed++;
                    toClose.add(o.connection);
                }
            }
            if (l.isEmpty())
                toRemove.add(e.getKey());
        }
        for (ConnectionKey remove : toRemove)
            availableConnections.remove(remove);
        remaining = availableConnections.size();
    }
    for (Connection c : toClose) {
        try {
            c.close();
        } catch (Exception e) {
            // do nothing
        }
    }
    if (closed != 0)
        log.debug("closed " + closed + " connections");
    return remaining;
}

From source file:org.n52.oxf.sos.adapter.v200.SOSCapabilitiesMapper_200.java

private void addConstraints(final RequestMethodType xbGetRequestMethod, final RequestMethod ocRequestMethod) {
    if (xbGetRequestMethod.getConstraintArray() != null) {
        for (final DomainType xbConstraint : xbGetRequestMethod.getConstraintArray()) {
            final String name = xbConstraint.getName();
            final ArrayList<String> allowedValues = new ArrayList<String>();
            if (xbConstraint.isSetAllowedValues()) {
                for (final ValueType xbAllowedValue : xbConstraint.getAllowedValues().getValueArray()) {
                    allowedValues.add(xbAllowedValue.getStringValue());
                }//ww w .j  a  va 2  s.c  om
            }
            if (name != null && !name.isEmpty() && !allowedValues.isEmpty()) {
                ocRequestMethod.addOwsConstraint(
                        new Constraint(name, allowedValues.toArray(new String[allowedValues.size()])));
            }
        }
    }
}

From source file:com.rr.generic.ui.users.userController.java

/**
 * The 'saveProgramUserModules' POST request will submit the selected program modules for the user and program.
 * //from   www. j a v a 2s . com
 * @param i The encrypted userId
 * @param v The encrypted secret
 * @param modules   The selected program modules.
 * @return
 * @throws Exception 
 */
@RequestMapping(value = "/saveProgramUserModules.do", method = RequestMethod.POST)
public @ResponseBody ModelAndView saveProgramUserModules(@RequestParam String i, @RequestParam String v,
        HttpSession session, HttpServletRequest request) throws Exception {

    /* Decrypt the url */
    int userId = decryptURLParam(i, v);

    /* Clear out current user modules */
    usermanager.removeUsedModulesByUser(programId, userId);

    ArrayList programModuleList = new ArrayList(
            Arrays.asList(request.getParameter("selProgramModules").split(",")));

    if (!programModuleList.isEmpty()) {

        for (Object programModuleList1 : programModuleList) {
            Integer module = Integer.parseInt(programModuleList1.toString());
            userProgramModules userModule = new userProgramModules();
            userModule.setSystemUserId(userId);
            userModule.setProgramId(programId);
            userModule.setModuleId(module);
            if (request.getParameter("create_" + module) != null) {
                userModule.setAllowCreate(true);
            }
            if (request.getParameter("edit_" + module) != null) {
                userModule.setAllowEdit(true);
            }
            if (request.getParameter("delete_" + module) != null) {
                userModule.setAllowDelete(true);
            }
            if (request.getParameter("level1_" + module) != null) {
                userModule.setAllowLevel1(true);
            }
            if (request.getParameter("level2_" + module) != null) {
                userModule.setAllowLevel2(true);
            }
            if (request.getParameter("level3_" + module) != null) {
                userModule.setAllowLevel3(true);
            }
            if (request.getParameter("reconcile_" + module) != null) {
                userModule.setAllowReconcile(true);
            }
            if (request.getParameter("import_" + module) != null) {
                userModule.setAllowImport(true);
            }
            if (request.getParameter("export_" + module) != null) {
                userModule.setAllowExport(true);
            }
            usermanager.saveUsedModulesByUser(userModule);
        }
    }

    ModelAndView mav = new ModelAndView();
    mav.setViewName("/users/programModules");
    mav.addObject("encryptedURL", "?i=" + i + "&v=" + v);

    return mav;
}

From source file:com.l2jfrozen.gameserver.geo.pathfinding.PathFinding.java

public final Node[] searchByClosest(final Node start, final Node end) {
    // Note: This is the version for cell-based calculation, harder
    // on cpu than from block-based pathnode files. However produces better routes.

    // Always continues checking from the closest to target non-blocked
    // node from to_visit list. There's extra length in path if needed
    // to go backwards/sideways but when moving generally forwards, this is extra fast
    // and accurate. And can reach insane distances (try it with 8000 nodes..).
    // Minimum required node count would be around 300-400.
    // Generally returns a bit (only a bit) more intelligent looking routes than
    // the basic version. Not a true distance image (which would increase CPU
    // load) level of intelligence though.

    // List of Visited Nodes
    final CellNodeMap known = CellNodeMap.newInstance();
    // List of Nodes to Visit
    final ArrayList<Node> to_visit = L2Collections.newArrayList();
    to_visit.add(start);/*from  w w  w . j ava2 s .c  o  m*/
    known.add(start);
    try {
        final int targetx = end.getNodeX();
        final int targety = end.getNodeY();
        final int targetz = end.getZ();
        int dx, dy, dz;
        boolean added;
        int i = 0;
        while (i < 3500) {
            if (to_visit.isEmpty()) {
                // No Path found
                return null;
            }

            final Node node = to_visit.remove(0);

            i++;

            node.attachNeighbors();
            if (node.equals(end)) {
                // path found! note that node z coordinate is updated only in attach
                // to improve performance (alternative: much more checks)
                // LOGGER.info("path found, i:"+i);
                return constructPath(node);
            }

            final Node[] neighbors = node.getNeighbors();
            if (neighbors == null)
                continue;
            for (final Node n : neighbors) {
                if (!known.contains(n)) {
                    added = false;
                    n.setParent(node);
                    dx = targetx - n.getNodeX();
                    dy = targety - n.getNodeY();
                    dz = targetz - n.getZ();
                    n.setCost(dx * dx + dy * dy + dz / 2 * dz/* +n.getCost() */);
                    for (int index = 0; index < to_visit.size(); index++) {
                        // supposed to find it quite early..
                        if (to_visit.get(index).getCost() > n.getCost()) {
                            to_visit.add(index, n);
                            added = true;
                            break;
                        }
                    }
                    if (!added)
                        to_visit.add(n);
                    known.add(n);
                }
            }
        }
        // No Path found
        // LOGGER.info("no path found");
        return null;
    } finally {
        CellNodeMap.recycle(known);
        L2Collections.recycle(to_visit);
    }
}

From source file:jnode.vm.NetAPIImpl.java

public byte[][] getHostByName(String hostname) throws UnknownHostException {

    ArrayList<byte[]> list = null;
    for (NetworkLayer layer : networkLayerManager.getNetworkLayers()) {
        final ProtocolAddress[] addrs = layer.getHostByName(hostname);
        if (addrs != null) {
            if (list == null) {
                list = new ArrayList<byte[]>();
            }/*  ww w. j av a2s . com*/
            final int cnt = addrs.length;
            for (int j = 0; j < cnt; j++) {
                final ProtocolAddress pa = addrs[j];
                if (pa != null) {
                    list.add(pa.toByteArray());
                }
            }
        }
    }

    if ((list == null) || list.isEmpty()) {
        throw new UnknownHostException(hostname);
    } else {
        return (byte[][]) list.toArray(new byte[list.size()][]);
    }
}