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Fetch child pages and sort them as per publish date and time
I have a scenario wherein I've to fetch all the child pages of a parent page (the path will be fetched from dialog) and then sort them as per most recent published date, and when date is time the same should be sorted as per published time...and ultimately just fetch the first 4 elements/pages after sorting.
I've developed a sling model where I'm getting the parent path and then trying to iterate and get the child pages and then store them in an arrayList. I will need some help with the sorting and then ultimately getting the first 4 pages. If someone could help me with the sling model (it'll be great you can provide me with the code snippet).
Attached is the piece of code that I've written.
dynamicArticles denotes the path of the parent page
childrenList is the ArrayList.
@arunpatidar @HeenaMadan @ksh_ingole7 @SantoshSai @B_Sravan @Sachin_Arora_ @Pulkit_Jain_ @milind_bachani
Thanks!
1 Accepted Solution
Correct answer by
i would create a simple bean class just for sorting to make use of java collection with objects.
public class ChildResult{
private String path="";
private String publishedTime="";
public void setPath(String path) {
this.path = path;
}
public String getPath() {
return path;
}
public void setPublishedTime(String publishedTime) {
this.publishedTime = publishedTime;
}
public String getPublishedTime() {
return publishedTime;
}
}
//in your Init()
List<ChildResult> childList = new ArrayList<>();
while(listChildPages.next()){
//while looping child pages and its value Map, create bean and set path and time in epoch format.
if(valueMap.containsKey("publishedDate")){
ChildResult hit = new ChildResult();
GregorianCalendar calendar = new GregorianCalendar();
Date startDate = valueMap.get("publishedDate", Date.class);
calendar.setTime(startDate);
long startEpoch = calendar.getTimeInMillis();
hit.setPublishedTime(startEpoch);
hit.setPath(childPage.getPath());
childList(hit);
}
}
//After reading all the child, just sort with below line.
Collections.sort(childList, Comparator.comparing(ChildResult::getPublishedTime));
Collections.reverse(childList); // To get the latest
Then loop thru the childList for top 4 and you have the path of the child resource in the bean you can return in the model by other methods.
Correct answer by
i would create a simple bean class just for sorting to make use of java collection with objects.
public class ChildResult{
private String path="";
private String publishedTime="";
public void setPath(String path) {
this.path = path;
}
public String getPath() {
return path;
}
public void setPublishedTime(String publishedTime) {
this.publishedTime = publishedTime;
}
public String getPublishedTime() {
return publishedTime;
}
}
//in your Init()
List<ChildResult> childList = new ArrayList<>();
while(listChildPages.next()){
//while looping child pages and its value Map, create bean and set path and time in epoch format.
if(valueMap.containsKey("publishedDate")){
ChildResult hit = new ChildResult();
GregorianCalendar calendar = new GregorianCalendar();
Date startDate = valueMap.get("publishedDate", Date.class);
calendar.setTime(startDate);
long startEpoch = calendar.getTimeInMillis();
hit.setPublishedTime(startEpoch);
hit.setPath(childPage.getPath());
childList(hit);
}
}
//After reading all the child, just sort with below line.
Collections.sort(childList, Comparator.comparing(ChildResult::getPublishedTime));
Collections.reverse(childList); // To get the latest
Then loop thru the childList for top 4 and you have the path of the child resource in the bean you can return in the model by other methods.
That was the comment for the lines of code given below that
Firstly I am really thankful to you for helping me out.
Secondly, I've written the code as per your suggestion and now I want to fetch the path of the child pages that are stored in the Array List. What to do?
I tried printing the arrayList now but it gives some values which seems to be something else. Please help.
@Saravanan_Dharmaraj Another issue is in bean class you have specified publishedTime as String but in init startEpoch is long type and thereafter hit.setPublishedTime(startEpoch) this throws error since type is contradicting. Which one shall be proper -- String or Long?
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