@Override
public Stream<Entry> entries() {
List<Entry> entries = new ArrayList<>();
try {
/*
* This code should be revisited to avoid buffering of the entries.
* 1) Do we really need sorting classes? This force buffering of entries.
* libs, cmds and configs are not sorted.
* 2) I/O streams should be concatenated instead of buffering into
* entries list.
* 3) Close I/O streams in a close handler.
*/
if (classes != null) {
try (Stream<Path> stream = Files.walk(classes)) {
entries.addAll(
stream
.filter(
p ->
!Files.isDirectory(p)
&& !classes.relativize(p).toString().startsWith("_the.")
&& !classes.relativize(p).toString().equals("javac_state"))
.sorted()
.map(p -> toEntry(p, classes, EntryType.CLASS_OR_RESOURCE))
.collect(Collectors.toList()));
}
}
if (cmds != null) {
try (Stream<Path> stream = Files.walk(cmds)) {
entries.addAll(
stream
.filter(p -> !Files.isDirectory(p))
.map(p -> toEntry(p, cmds, EntryType.NATIVE_CMD))
.collect(Collectors.toList()));
}
}
if (libs != null) {
try (Stream<Path> stream = Files.walk(libs)) {
entries.addAll(
stream
.filter(p -> !Files.isDirectory(p))
.map(p -> toEntry(p, libs, EntryType.NATIVE_LIB))
.collect(Collectors.toList()));
}
}
if (configs != null) {
try (Stream<Path> stream = Files.walk(configs)) {
entries.addAll(
stream
.filter(p -> !Files.isDirectory(p))
.map(p -> toEntry(p, configs, EntryType.CONFIG))
.collect(Collectors.toList()));
}
}
} catch (IOException ioe) {
throw new UncheckedIOException(ioe);
}
return entries.stream();
}
public void resolve(
String identifier,
TableReference container,
EReference reference,
int position,
boolean resolveFuzzy,
final ISqlReferenceResolveResult<TableDefinition> result) {
SQLScript sqlScript = (SQLScript) EcoreUtil.getRootContainer(container);
String catalogName = container.getCatalogName();
Predicate<TableDefinition> filter =
!Helper.isEmpty(catalogName)
? table -> catalogName.equals(table.getSchemaQualifiedName().getCatalogName())
: table -> true;
String schemaName = container.getSchemaName();
Predicate<TableDefinition> filter2 =
!Helper.isEmpty(schemaName)
? table -> schemaName.equals(table.getSchemaQualifiedName().getSchemaName())
: table -> true;
Stream<TableDefinition> tables =
sqlScript
.getStatements()
.stream()
.filter(stmt -> stmt instanceof TableDefinition)
.map(table -> (TableDefinition) table)
.filter(filter.and(filter2));
Consumer<TableDefinition> addMapping =
table -> result.addMapping(table.getSchemaQualifiedName().getName(), table);
if (resolveFuzzy) {
tables
.filter(
table ->
table.getSchemaQualifiedName() != null
&& table.getSchemaQualifiedName().getName() != null
&& table
.getSchemaQualifiedName()
.getName()
.toUpperCase()
.startsWith(identifier.toUpperCase()))
.forEach(addMapping);
} else {
tables
.filter(
table ->
table.getSchemaQualifiedName() != null
&& table.getSchemaQualifiedName().getName() != null
&& table.getSchemaQualifiedName().getName().equals(identifier))
.findFirst()
.ifPresent(addMapping);
}
}
@Test
public void findChangeLocationUsingTagName() {
WebDriver driver = Browsers.CHROME;
driver.get("http://www.ticketfly.com");
Stream<WebElement> links = driver.findElements(By.tagName("a")).stream();
links.filter((WebElement e) -> e.getText().equals("change location")).findFirst().get().click();
}
public static void main(String[] args) {
// An Operation on a stream that returns a stream is an intermediary operation
Stream<String> stream1 = Stream.of("one", "two", "three", "four", "five");
Predicate<String> p1 = Predicate.isEqual("two");
stream1.filter(p1); // This is an intermediary operation and it does nothing!
/*
The below piece of code does nothing!
peek() and filter() methods are intermediary operations as they return a stream.
Hence, this code does not prints anything.
It is just a simple declaration.
*/
List<String> result1 = new ArrayList<>();
Stream<String> stream2 = Stream.of("one", "two", "three", "four", "five");
Predicate<String> p2 = Predicate.isEqual("two");
stream2.peek(System.out::println).filter(p2).peek(result1::add);
System.out.println("size -> " + result1.size());
System.out.println("******************************************");
/*
Using Final method (forEach())
Only the Final operation triggers the processing of the data the stream is connected to.
*/
List<String> result2 = new ArrayList<>();
Stream<String> stream3 = Stream.of("one", "two", "three", "four", "five");
Predicate<String> p3 = Predicate.isEqual("two");
Predicate<String> p4 = Predicate.isEqual("three");
stream3.peek(System.out::println).filter(p3.or(p4)).forEach(result2::add);
System.out.println("size -> " + result2.size());
}
public void testWalkOneLevel() {
try (Stream<Path> s = Files.walk(testFolder, 1)) {
Object[] actual = s.filter(path -> !path.equals(testFolder)).sorted().toArray();
assertEquals(actual, level1);
} catch (IOException ioe) {
fail("Unexpected IOException");
}
}
public Stream<AbstractEvent> filter(Stream<AbstractEvent> stream, String interestingEvents) {
Set<Predicate<AbstractEvent>> wantedEvents =
Arrays.stream(interestingEvents.split(","))
.map(str -> predicateMatch(str))
.collect(Collectors.toSet());
return stream.filter(ev -> wantedEvents.stream().anyMatch(pred -> pred.test(ev)));
}
@Nullable
public static <T, U> U findInstance(Stream<T> stream, Class<U> clazz) {
return stream
.filter(SdcctStreamUtils.<T, U>instances(clazz))
.findFirst()
.map(clazz::cast)
.orElse(null);
}
@Parameters(name = "{0}")
public static Object[] getAutomata() throws IOException {
try (Stream<Path> configFiles = Files.walk(Paths.get("config/specification"))) {
return configFiles
.filter(path -> path.getFileName().toString().endsWith(".spc"))
.sorted()
.toArray();
}
}
public static void main(String[] args) throws IOException {
try (Stream<Path> stream = Files.list(Paths.get(""))) {
String joined =
stream
.map(String::valueOf)
.filter(path -> !path.startsWith("."))
.sorted()
.collect(Collectors.joining("; "));
System.out.println("List: " + joined);
}
Path start = Paths.get("");
int maxDepth = 5;
try (Stream<Path> stream =
Files.find(start, maxDepth, (path, attr) -> String.valueOf(path).endsWith(".java"))) {
String joined = stream.sorted().map(String::valueOf).collect(Collectors.joining("; "));
System.out.println("Found: " + joined);
}
try (Stream<Path> stream = Files.walk(start, maxDepth)) {
String joined =
stream
.map(String::valueOf)
.filter(path -> path.endsWith(".java"))
.sorted()
.collect(Collectors.joining("; "));
System.out.println("walk(): " + joined);
}
List<String> lines = Files.readAllLines(Paths.get("src/golf.sh"));
lines.add("puts 'foobar'");
Path path = Paths.get("src/golf-modified.sh");
Files.write(path, lines);
try (Stream<String> stream = Files.lines(path)) {
stream.filter(line -> line.contains("puts")).map(String::trim).forEach(System.out::println);
}
System.out.println("a" == "a");
System.out.println("a" != new String("a"));
System.out.println(null != "a");
System.out.println("a".equals("a"));
try (BufferedReader reader = Files.newBufferedReader(path)) {
while (reader.ready()) System.out.println(reader.readLine());
}
try (BufferedWriter writer = Files.newBufferedWriter(Paths.get("hello-world.sh"))) {
writer.write("puts 'Hello world'");
}
try (BufferedReader reader = Files.newBufferedReader(path)) {
long countPuts = reader.lines().filter(line -> line.contains("put")).count();
System.out.println(countPuts);
}
}
protected void updateEntitiesList() {
this.entities = getAll();
if (this.searchCriteria != null && this.searchCriteria.size() > 0) {
Stream<T> stream = this.entities.stream();
for (FieldSearchCriterion<T> fieldSearchCriterion : this.searchCriteria) {
stream = stream.filter(fieldSearchCriterion.buildPredicate());
}
this.entities = stream.collect(Collectors.toList());
}
this.notifyObservers(null);
}
@Test
public void testInvalidDatasetTypesFail() throws AssertionError {
final Stream<DatasetType> allTypes = Arrays.stream(DatasetType.values());
allTypes
.filter(t -> t != DatasetType.BIT)
.forEach(
type -> {
dataset = datasetCreator.createDataset(type);
final boolean result = (boolean) ij.op().run(DatasetIsBinary.class, dataset);
final String typeClassName = dataset.getType().getClass().getName();
assertFalse("A Dataset of type " + typeClassName + " should not be binary", result);
});
}
public void loadServerConfigFiles() {
if (!Files.exists(serverStorageDir)) {
LOGGER.info("Server storage directory doesn't exist, not loading anything");
return;
}
try (Stream<Path> files = Files.list(serverStorageDir)) {
files
.filter(p -> p.getFileName().toString().endsWith(".json"))
.forEach(this::loadServerConfig);
} catch (IOException e) {
LOGGER.warn("Unable to load server storage files", e);
return;
}
}
static boolean hasEntry(Path path) {
boolean hasChild;
try (Stream<Path> pathsStream = Files.walk(path)) {
hasChild =
pathsStream
.filter(Files::isRegularFile)
.map(FileSystemUtils::toFolderEntry)
.findAny()
.isPresent();
} catch (IOException e) {
throw new TDPException(UNABLE_TO_DELETE_FOLDER, e, build().put("path", path));
}
return hasChild;
}
@Override
public void addContent(PdfPTable table, Font font, IWeaponStats weapon) {
if (weapon == null) {
table.addCell(createEmptyNameCell(font));
} else {
Stream<Identifier> tags = weapon.getTags().stream();
List<String> values =
tags.filter(printedTags::contains)
.map(input -> resources.getString("Weapons.Tags." + input.getId() + ".Short"))
.collect(toList());
String valueString = values.isEmpty() ? " " : Joiner.on(",").join(values);
table.addCell(createFilledContentCell(font, valueString));
}
}
private Stream<PostponingReasons> getPostponingReasonsStream(
String sql, boolean doDistinctAfterFirstStream) {
final AccumulationContext context = new AccumulationContext();
final LazyResultSetIterator<Pair> iterator =
LazyResultSetIterator.<Pair>of(
Common.getRsSupplier(jdbcConnector, sql, "streamAllPostponingReasons"),
Common.getMappingSqlFunction(
rs ->
new Pair(
sqlDialect.translateFromDb(rs.getObject(1), UtcDay.class),
CurrencyUnit.ofNumericCode(rs.getInt(2))),
sql,
"streamAllPostponingReasons"),
sql);
Stream<Pair> stream = iterator.stream();
if (doDistinctAfterFirstStream) {
stream = stream.distinct();
}
return stream
.filter(
pair -> {
if (context.builder == null) {
context.builder = ImmutableSet.builder();
context.currentDay = pair.day;
context.builder.add(pair.unit);
return false;
}
if (!pair.day.equals(context.currentDay)) {
return true;
} else {
context.builder.add(pair.unit);
return false;
}
})
.map(
pair -> {
final PostponingReasons postponingReasons =
new PostponingReasons(context.currentDay, context.builder.build());
if (iterator.hasNext()) {
context.builder = ImmutableSet.builder();
context.currentDay = pair.day;
context.builder.add(pair.unit);
}
return postponingReasons;
});
}
@Test(dependsOnMethods = "testLog4j2ConfigUpdate")
public void testAuditLog() throws IOException, ConfigurationException {
PrivilegedCarbonContext carbonContext = PrivilegedCarbonContext.getCurrentContext();
Principal principal = () -> "Banda";
carbonContext.setUserPrincipal(principal);
Logger audit = org.wso2.carbon.kernel.Constants.AUDIT_LOG;
audit.info("Attempting to test the audit logs.");
Path auditLog = Paths.get(System.getProperty("carbon.home"), "logs", "audit.log");
Assert.assertTrue(Files.exists(auditLog), "audit.log does not exist.");
try (Stream<String> stream = Files.lines(auditLog)) {
Optional<String> match = stream.filter(line -> line.contains("user-name=Banda")).findAny();
Assert.assertTrue(match.isPresent(), "user-name=Banda is not found in the audit.log");
}
}
// TODO get action should be able to return futures with sub-types of entity
// wrapper
public CompletableFuture<EntityWrapper<?>> get(String username) {
// yes this is very inefficient. The plan is to get it working and then
// get it right
Stream<EntityRelationship> children;
children = getEntities().stream();
Stream<EntityRelationship> filtered =
children.filter(
child -> {
String childUsername =
child.resolve(Account.class).join().getProperties().getUsername();
return childUsername == null && username == null || childUsername.equals(username);
});
EntityRelationship entityRelationship = filtered.findAny().get();
return (CompletableFuture) entityRelationship.resolve(Account.class);
}
@Override
protected EntityLivingBase findNewTarget() {
double maxDist = getTargetDistance();
List<T> entities =
EntitySelector.type(
taskOwner.worldObj,
targetClass,
taskOwner.boundingBox.expand(maxDist, maxDist * 0.5D, maxDist));
Stream<T> stream =
entities
.stream()
.filter(entity -> entity.getDistanceSqToEntity(taskOwner) <= maxDist * maxDist);
if (predicate != null) stream = stream.filter(predicate);
entities = stream.collect(Collectors.toList());
if (entities.isEmpty()) return null;
return entities.get(taskOwner.worldObj.rand.nextInt(entities.size()));
}
private Stream<? extends Entity> validate(
Stream<? extends Entity> entities,
ValidationResource validationResource,
ValidationMode validationMode) {
if (ENTITIES_THAT_DO_NOT_NEED_VALIDATION.contains(getName())) {
return entities;
}
// prepare validation
initValidation(validationResource, validationMode);
// add validation operation to stream
return entities.filter(
entity -> {
validationResource.incrementRow();
validateEntityValueTypes(entity, validationResource);
// other validation steps might not be able to handle invalid data types, stop here
if (validationResource.hasViolations()) {
throw new MolgenisValidationException(validationResource.getViolations());
}
validateEntityValueRequired(entity, validationResource);
validateEntityValueUniqueness(entity, validationResource, validationMode);
validateEntityValueReferences(entity, validationResource);
if (validationMode == ValidationMode.UPDATE) {
validateEntityValueReadOnly(entity, validationResource);
}
if (validationResource.hasViolations()) {
throw new MolgenisValidationException(validationResource.getViolations());
}
return true;
});
}
public static JsonObject invoke(JsonObject json, String area) {
JsonObject responseData = json.getObject("ResponseData");
if (responseData == null) {
return new JsonObject();
}
if (Server.l != null) {
Server.l.info(getLatestUpdate(json) + " - " + getExecutionTime(json));
}
Predicate<String> isJsonArray = name -> responseData.getField(name) instanceof JsonArray;
Function<String, List<JsonObject>> jsonArrayToList =
name -> {
Stream<Object> stream =
stream(responseData.<JsonArray>getField(name).spliterator(), false);
Stream<JsonObject> objectStream = stream.filter(getFilterFor(area));
return objectStream.collect(toList());
};
Predicate<Map.Entry<String, List<JsonObject>>> nonEmpty = entry -> !entry.getValue().isEmpty();
Stream<Map.Entry<String, List<JsonObject>>> entryStream =
responseData
.getFieldNames()
.stream()
.filter(isJsonArray)
.collect(toMap(String::toLowerCase, jsonArrayToList))
.entrySet()
.stream()
.filter(nonEmpty);
JsonObject result = toJsonObject(entryStream);
setUniqueKeysOn(result.getArray("trains"));
writeHeaderFields(result);
return result;
}
public Analyze() throws IOException {
Stream<String> lines = Files.lines(Paths.get(Break.LOCATION + "/result"));
Stream<Result> s = lines.map(this::parseLine);
System.out.println("Searching ...");
FrequencyAnalysis frequencyAnalysis = new FrequencyAnalysis(FrequencyAnalysis.simple(), 0.8);
Map<Break.Setup, String> answers =
s.filter(result -> frequencyAnalysis.analyse(result.line))
// .filter(result ->
// frequencyAnalysis.containsKeywords(result.line))
.collect(Collectors.toMap(r -> r.setup, r -> r.line));
System.out.println("Found " + answers.values().size());
answers.forEach(
(k, v) -> {
System.out.println(k + " -> " + v);
});
if (answers.isEmpty()) {
throw new IllegalStateException("Did not find anything ...");
}
}
/**
* Gets an iterator over those vertices/edges that have the specific IDs wanted, or those that
* have indexed properties with the wanted values, or failing that by just getting all of the
* vertices or edges.
*
* @param getElementsByIds Function that will return an iterator over all the vertices/edges in
* the graph that have the specific IDs
* @param getElementsByIndex Function that returns a stream of all the vertices/edges in the graph
* that have an indexed property with a specific value
* @param getAllElements Function that returns an iterator of all the vertices or all the edges
* (i.e. full scan)
* @return An iterator for all the vertices/edges for this step
*/
private <ElementType extends Element> Iterator<? extends ElementType> elements(
BiFunction<OrientGraph, Object[], Iterator<ElementType>> getElementsByIds,
TriFunction<OrientGraph, OIndex<Object>, Iterator<Object>, Stream<? extends ElementType>>
getElementsByIndex,
Function<OrientGraph, Iterator<ElementType>> getAllElements) {
final OrientGraph graph = getGraph();
if (this.ids != null && this.ids.length > 0) {
/** Got some element IDs, so just get the elements using those */
return this.iteratorList(getElementsByIds.apply(graph, this.ids));
} else {
/** Have no element IDs. See if there's an indexed property to use */
Set<OrientIndexQuery> indexQueryOptions = findIndex();
if (!indexQueryOptions.isEmpty()) {
List<ElementType> elements = new ArrayList<>();
indexQueryOptions.forEach(
indexQuery -> {
OLogManager.instance().debug(this, "using " + indexQuery);
Stream<? extends ElementType> indexedElements =
getElementsByIndex.apply(graph, indexQuery.index, indexQuery.values);
elements.addAll(
indexedElements
.filter(element -> HasContainer.testAll(element, this.hasContainers))
.collect(Collectors.<ElementType>toList()));
});
return elements.iterator();
} else {
OLogManager.instance()
.warn(
this,
"scanning through all elements without using an index for Traversal "
+ getTraversal());
return this.iteratorList(getAllElements.apply(graph));
}
}
}
@Override
public void logout() {
final HttpUriRequest logoutGet = RequestBuilder.get().setUri(NYT_LOGOUT_URL).build();
try (final CloseableHttpResponse getResponse = this.getHttpClient().execute(logoutGet)) {
// successful NYT logout should give 200 status
final int responseStatus = getResponse.getStatusLine().getStatusCode();
if (responseStatus != 200) {
final String errorMessage =
String.format("did not detect expected 200, got %d instead", responseStatus);
throw new LogoutException(errorMessage);
}
// successful NYT logout should delete a few cookies like this:
// Set-Cookie: NYT-S=deleted; expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/;
// domain=.nytimes.com
final Header[] cookies = getResponse.getHeaders("Set-Cookie");
if (cookies.length < 1) {
throw new LogoutException("no cookie deletions detected, logout might have failed");
}
final Stream<Header> cookieStream = Arrays.stream(cookies);
final Predicate<Header> deletedCheck = c -> c.getValue().contains("deleted");
if (!cookieStream.allMatch(deletedCheck)) {
final List<Header> unexpectedCookies =
cookieStream.filter(deletedCheck).collect(Collectors.toList());
LOG.error("unexpected cookies={}", unexpectedCookies);
throw new LogoutException("unexpected cookie(s) set, loguout might have failed");
}
LOG.info("successfully logged out of nyt");
} catch (IOException | LogoutException e) {
LOG.error("error while logging out of nyt, e={}", e);
}
}
private static String getClassName(File inputFile) throws FileNotFoundException {
String className;
try {
Path myPath = Paths.get(inputFile.toURI());
Stream<String> lines = Files.lines(myPath);
String line = lines.filter(s -> s.startsWith(".class ")).findFirst().get();
lines.close();
if (null == line) {
throw new RuntimeException("Missing class directive in " + inputFile);
}
Matcher m = CLASS_PATTERN.matcher(line);
if (!m.find()) {
throw new RuntimeException("Strange class directive: " + line);
}
className = m.group(1);
} catch (IOException e) {
throw new RuntimeException("Unable to read class name in " + inputFile, e);
}
return className;
}
private static int positiveSumStreamApproach(List<Integer> list) {
Stream<Integer> stream = list.stream();
int sum = stream.filter(i -> i > 0).mapToInt(i -> i).sum();
return sum;
}
public static <T, U> Stream<U> asInstances(Stream<T> stream, Class<U> clazz) {
return stream.filter(SdcctStreamUtils.<T, U>instances(clazz)).map(clazz::cast);
}
public static <T, U> Stream<T> filterInstances(Stream<T> stream, Class<U> clazz) {
return stream.filter(clazz::isInstance);
}
@Override
public Object filter(Stream t, Predicate p) {
return t.filter(p);
}
static void filesTest() {
// Files.list
try {
try (Stream<Path> stream = Files.list(Paths.get("/opt"))) {
String joined =
stream
.map(String::valueOf)
.filter(path -> !path.startsWith("."))
.sorted()
.collect(Collectors.joining("; "));
System.out.println("List path /opt : " + joined);
}
} catch (IOException e) {
e.printStackTrace();
}
// Files.find
Path start = Paths.get("/Users/alibaba/Downloads/2016113");
int maxDepth = 5;
try (Stream<Path> stream =
Files.find(start, maxDepth, (path, attr) -> String.valueOf(path).endsWith(".js"))) {
String joined = stream.sorted().map(String::valueOf).collect(Collectors.joining("; "));
System.out.println("Files find : " + joined);
} catch (IOException e) {
e.printStackTrace();
}
// Files.walk
try (Stream<Path> stream = Files.walk(start, maxDepth)) {
String joined =
stream
.map(String::valueOf)
.filter(path -> path.endsWith(".js"))
.sorted()
.collect(Collectors.joining("; "));
System.out.println("Files walk : " + joined);
} catch (IOException e) {
e.printStackTrace();
}
// Files.readAllLines
try {
String p = "/Users/alibaba/linuxsir.txt";
List<String> lines = Files.readAllLines(Paths.get(p));
lines.add("print('foobar');");
Files.write(Paths.get(p), lines);
lines.remove(lines.size() - 1);
System.out.println("readAllLines " + lines);
Files.write(Paths.get(p), lines);
} catch (IOException e) {
e.printStackTrace();
}
// Files.lines
try (Stream<String> stream = Files.lines(Paths.get("/Users/alibaba/linuxsir.txt"))) {
stream.filter(line -> line.contains("w")).map(String::valueOf).forEach(System.out::println);
} catch (IOException e) {
e.printStackTrace();
}
// Files.newBufferedReader&Files.newBufferedWriter
Path path = Paths.get("/Users/alibaba/linuxsir.txt");
try (BufferedReader reader = Files.newBufferedReader(path)) {
System.out.println(reader.readLine());
} catch (IOException e) {
e.printStackTrace();
}
path = Paths.get("/Users/alibaba/output.txt");
try (BufferedWriter writer = Files.newBufferedWriter(path)) {
writer.write("print('Hello World')");
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Convert a stream of objects into a set of strings.
*
* @param stream stream of objects
* @return set of strings
*/
private Set<String> streamToStrings(Stream<Object> stream) {
return stream
.filter(String.class::isInstance)
.map(String.class::cast)
.collect(Collectors.toSet());
}