What's the difference between ParallelOptions.MaxDegreeOfParallelism and ParallelOptions.TaskScheduler.MaximumConcurrencyLevel? When would you use either?
Using reflector, I've gathered that both are used in EffectiveMaxConcurrencyLevel property:
internal int EffectiveMaxConcurrencyLevel
{
get
{
int maxDegreeOfParallelism = this.MaxDegreeOfParallelism;
int maximumConcurrencyLevel = this.EffectiveTaskScheduler.MaximumConcurrencyLevel;
if ((maximumConcurrencyLevel > 0) && (maximumConcurrencyLevel != 0x7fffffff))
{
maxDegreeOfParallelism = (maxDegreeOfParallelism == -1) ? maximumConcurrencyLevel : Math.Min(maximumConcurrencyLevel, maxDegreeOfParallelism);
}
return maxDegreeOfParallelism;
}
}
Related
This is my example
for (i in array.indices)
{
if (array[i] == 10)
{
i -= 2//have error here
}
}
How can i make 'i' variable mutable?
You can't. Use while loop instead:
var i = 0
while (i < array.size) {
if (array[i] == 10) {
i -= 2
}
...
i++
}
How to delete custom XML files with its property and relationship files?, I've used clear() method. But it's not working. Help me out.
wordMLPackage.getCustomXmlDataStorageParts().clear();
https://github.com/plutext/docx4j/blob/master/docx4j-core/src/main/java/org/docx4j/Docx4J.java#L643 shows you how to do this. To remove them all, it would be:
protected static void removeDefinedCustomXmlParts(WordprocessingMLPackage wmlPackage) {
List<PartName> partsToRemove = new ArrayList<PartName>();
RelationshipsPart relationshipsPart = wmlPackage.getMainDocumentPart().getRelationshipsPart();
List<Relationship> relationshipsList = ((relationshipsPart != null) &&
(relationshipsPart.getRelationships() != null) ?
relationshipsPart.getRelationships().getRelationship() : null);
Part part = null;
if (relationshipsList != null) {
for (Relationship relationship : relationshipsList) {
if (Namespaces.CUSTOM_XML_DATA_STORAGE.equals(relationship.getType())) {
part = relationshipsPart.getPart(relationship);
partsToRemove.add(part.getPartName());
}
}
}
if (!partsToRemove.isEmpty()) {
for (int i=0; i<partsToRemove.size(); i++) {
relationshipsPart.removePart(partsToRemove.get(i));
}
}
}
Am relatively new to java so I have no idea what the problem is. In my getter settings of this class, I'm trying to evaluate if the input is of integer 1, 2 or 3, then it will return one of the previously saved setters described here. I used the same conditional statements in the setter, but the getter tells me that my method needs to return type int. What am I doing wrong? Or should I be doing this a completely different way? lol.
public class AssignmentMarks {
private String courseName;
private int assignment1 = 0, assignment2 = 0, assignment3 = 0;
public AssignmentMarks(String name, int mark1, int mark2, int mark3){
//create constructor to use variables.
this.courseName = name;
this.assignment1 = mark1;
this.assignment2 = mark2;
this.assignment3 = mark3;
}
public void setMark(int assignmentNumber, int mark) {
//assign value of the assignments
if(assignmentNumber == 1) {
mark = this.assignment1;
}else if(assignmentNumber == 2) {
mark = this.assignment2;
}else if(assignmentNumber == 3){
mark = this.assignment3;
}
}
public int getMark(int assignmentNum) {
if(assignmentNum == 1) {
return assignment1;
}else if (assignmentNum == 2) {
return assignment2;
} else if (assignmentNum == 3) {
return assignment3;
}
}
}
public int getMark(int assignmentNum) {
if(assignmentNum == 1) {
return assignment1;
}else if (assignmentNum == 2) {
return assignment2;
} else if (assignmentNum == 3) {
return assignment3;
}
// in another case
throw new Exception("Assignment must be 1, 2 or 3);
}
for setter
public void setMark(int assignmentNumber, int mark) {
//assign value of the assignments
if(assignmentNumber == 1) {
// BAD mark = this.assignment1; don't set parameter is useless
this.assignment1=mark;
}else if(assignmentNumber == 2) {
// BAD mark = this.assignment2;
this.assignment2=mark;
}else if(assignmentNumber == 3){
// BAD mark = this.assignment3;
this.assignment3=mark;
}
// in another case
throw new Exception("Assignment must be 1, 2 or 3");
}
I don't remember if you must import Exception for throwing them.
if yes put import java.lang.Exception on top of your code.
your logic can be improved using arrays, but let's walk, and after you will running...
I find required objects in visualvm v1.3.8:
filter(heap.objects("java.lang.String"), "/hibernate\\.ejb\\.naming/(it.toString())")
they shown as:
java.lang.String#32669 - hibernate.ejb.naming_strategy_delegator
java.lang.String#34021 - hibernate.ejb.naming_strategy
java.lang.String#39522 - hibernate.ejb.naming_strategy_delegator
How can I refer to individual object from result set in OQL syntax? My attempts fail:
select heap.findObject("java.lang.String#34021")
select heap.findObject("#34021")
select heap.findObject("34021")
I may use trick with objectid(...):
map(filter(heap.objects("java.lang.String"),
"/hibernate\\.ejb\\.naming/.test(it.toString())"),
"{id: objectid(it), ref: it}")
and then reuse id with heap.findObject(4077522088) like syntax.
UPDATE 2022 Seems VisualVM enumerates each type separately and consistently so iteration of heap.objects("...", false) should lead to the right object:
function objectnum(clazz, num) {
if (typeof clazz !== 'string') { return undefined; }
if (Math.floor(num) !== num) {
var split = clazz.split("#");
if (split.length != 2) { return undefined; }
clazz = split[0];
num = parseInt(split[1]);
}
if (num < 1) { return undefined; }
var iter = heap.objects(clazz, false);
var i = 0;
while (iter.hasMoreElements()) {
i += 1;
var next = iter.nextElement();
if (num === i) { return next; }
}
return null;
}
// Usage:
objectnum("byte[]#123");
objectnum("char[]", 456);
objectnum("java.lang.String#789");
I made my own class that extends CBaseUrlRule to manage some sort of pages on site. Result class code is
class HotelUrlRule extends CBaseUrlRule {
public function parseUrl($manager,$request,$pathInfo,$rawPathInfo) {
if(isset($_GET['id'])) {
if (($_GET['id'] != 0) && ($pathInfo == 'hotel')) {
return 'hotel/index';
}
}
return false;
}
public function createUrl($manager,$route,$params,$ampersand) {
if ($route == 'hotel/index') {
Yii::import('application.controllers.SearchController');
$searcher = new SearchController($this, NULL);
$hotelRaw = $searcher->actionGetHotelInformation($_GET['id']);
$hotelRaw = $hotelRaw['GetHotelInformationResult'];
$hotelName = $hotelRaw['Name'];
$hotelName = preg_replace('%(\s)%', '-', $hotelName);
return 'hotel/' . $hotelName;
}
return false;
}
}
The condition in parseUrl ($_GET['id'] != 0) && ($pathInfo == 'hotel') returns 'true' and the condition in createUrl ($route == 'hotel/index') returns 'false'. Var_dump of $route is 'admin/auth'.
Why is it so? Any guesses?