Package org.opencms.workplace.tools.searchindex

Class CmsHookListSearchCategory

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<E>

java.util.AbstractSequentialList<E>

java.util.LinkedList<String>

org.opencms.workplace.tools.searchindex.CmsHookList

org.opencms.workplace.tools.searchindex.CmsHookListSearchCategory

All Implemented Interfaces:

Serializable, Cloneable, Iterable<String>, Collection<String>, Deque<String>, List<String>, Queue<String>

public class CmsHookListSearchCategory
extends CmsHookList

A hook on the list of categories of the CmsSearchParameters (see CmsSearchParameters.setCategories(List)) that will set the page to display of the search parameters to start (1) whenever a change in the amount of categories takes place.

This hook monitors the actions of the CmsWidgetDialog: During a request - response cycle it clears the list (prepareCommit) of categories and adds all request parameters (actionCommitValue) to the list.

The strategy here is to save all categories in a backup at "onClear" - time and then wait until all add operations are finished. This is when the iterator() method is triggered by the running search (CmsSearch.getSearchResult()). At that time it is detected wether we have "lost" categories. If this is the case, the search page will be reset to start.

Warning

This procedure is highly unstable as coupled to the behaviour of CmsWidgetDialog. It will only be successful if the request parameter "action" has a value in

1. CmsWidgetDialog.DIALOG_SAVE
2. CmsDialog.DIALOG_BACK
3. CmsDialog.DIALOG_CONTINUE

Search page links (CmsSearch.getPageLinks()) contain a parameter "action" with value "search" which has to be rewritten to one of those values or the order of operations on widget - managed collections does not work together with the detection strategy for category changes used here.

Since:

6.0.0

See Also:

• Serialized Form

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor	Description
CmsHookListSearchCategory(org.opencms.search.CmsSearchParameters peer)
CmsHookListSearchCategory(org.opencms.search.CmsSearchParameters peer, Collection<String> c)

Method Summary

Modifier and Type	Method	Description
protected void	onAdded(Object peer, int index, Object element)	A category has been added: do nothing.
protected void	onAdded(Object peer, Object added)	React on the performed operation List.add(java.lang.Object) by informing argument peer.
protected void	onClear(Object peer)	Takes a copy of the current categories contained to a backup list as this operation is triggered by CmsWidgetDialog.ACTION_SAVE.
protected void	onCleared(Object peer)	React on the performed operation List.clear() by informing argument peer.
protected void	onGetCall(Object peer, int index)	Set the search page of the peer Object (CmsSearch.setSearchPage(int)) to zero if the internal backup list of categories (taken at clear time which is triggered by CmsWidgetDialog.ACTION_SAVE) was empty (no restriction) and now categories are contained or if the new backup list of categories is no subset of the current categories any more (more restrictive search than before).
protected void	onIteratorCall(Object peer)	React on the performed operation List.iterator() by informing argument peer.
protected void	onRemoved(Object peer, int index)	A category has been removed: set search page to start page as new results may / will be smaller.

Methods inherited from class org.opencms.workplace.tools.searchindex.CmsHookList

add, add, clear, get, iterator, remove

Methods inherited from class java.util.LinkedList

addAll, addAll, addFirst, addLast, clone, contains, descendingIterator, element, getFirst, getLast, indexOf, lastIndexOf, listIterator, offer, offerFirst, offerLast, peek, peekFirst, peekLast, poll, pollFirst, pollLast, pop, push, remove, remove, removeFirst, removeFirstOccurrence, removeLast, removeLastOccurrence, set, size, spliterator, toArray, toArray

Methods inherited from class java.util.AbstractList

equals, hashCode, listIterator, removeRange, subList

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, removeAll, retainAll, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.List

containsAll, equals, hashCode, isEmpty, listIterator, removeAll, replaceAll, retainAll, sort, subList

Constructor Details

CmsHookListSearchCategory

public CmsHookListSearchCategory(org.opencms.search.CmsSearchParameters peer)

Parameters:

peer - the search parameters to modify upon category modifications.

CmsHookListSearchCategory

public CmsHookListSearchCategory(org.opencms.search.CmsSearchParameters peer,
 Collection<String> c)

Parameters:

peer - the search parameters to modify upon category modifications

c - a collection with all values for this list

Method Details

onAdded

protected void onAdded(Object peer,
 int index,
 Object element)

A category has been added: do nothing.

Specified by:

onAdded in class CmsHookList

Parameters:

peer - the object reactions on operations shall be made on in this "listlet" method

index - the index the element was added at

element - the element that was added

See Also:

• CmsHookList.onAdded(java.lang.Object, int, java.lang.Object)

onAdded

protected void onAdded(Object peer,
 Object added)

Description copied from class: CmsHookList

React on the performed operation List.add(java.lang.Object) by informing argument peer.

Specified by:

onAdded in class CmsHookList

Parameters:

peer - the object reactions on operations shall be made on in this "listlet" method

added - the element that was successfully added

See Also:

• CmsHookList.onAdded(java.lang.Object, java.lang.Object)

onClear

protected void onClear(Object peer)

Takes a copy of the current categories contained to a backup list as this operation is triggered by CmsWidgetDialog.ACTION_SAVE.

Specified by:

onClear in class CmsHookList

Parameters:

peer - the object reactions on operations shall be made on in this "listlet" method

See Also:

• CmsHookList.onClear(java.lang.Object)

onCleared

protected void onCleared(Object peer)

Description copied from class: CmsHookList

React on the performed operation List.clear() by informing argument peer.

This is called after the actual clear operation has taken place.

Specified by:

onCleared in class CmsHookList

Parameters:

peer - the object reactions on operations shall be made on in this "listlet" method

See Also:

• CmsHookList.onCleared(java.lang.Object)

onGetCall

protected void onGetCall(Object peer,
 int index)

Set the search page of the peer Object (CmsSearch.setSearchPage(int)) to zero if the internal backup list of categories (taken at clear time which is triggered by CmsWidgetDialog.ACTION_SAVE) was empty (no restriction) and now categories are contained or if the new backup list of categories is no subset of the current categories any more (more restrictive search than before).

Specified by:

onGetCall in class CmsHookList

Parameters:

peer - the object reactions on operations shall be made on in this "listlet" method

index - the index of the Object to get

See Also:

• CmsHookList.onGetCall(java.lang.Object, int)

onIteratorCall

protected void onIteratorCall(Object peer)

Description copied from class: CmsHookList

React on the performed operation List.iterator() by informing argument peer.

Note that the iterator is only obtained but not given to the requesting client when this handler is invoked.

Specified by:

onIteratorCall in class CmsHookList

Parameters:

peer - the object reactions on operations shall be made on in this "listlet" method

See Also:

• CmsHookList.onIteratorCall(java.lang.Object)

onRemoved

protected void onRemoved(Object peer,
 int index)

A category has been removed: set search page to start page as new results may / will be smaller.

Specified by:

onRemoved in class CmsHookList

Parameters:

peer - the object reactions on operations shall be made on in this "listlet" method

index - the index where the value has been removed

See Also:

• CmsHookList.onRemoved(java.lang.Object, int)