@Override
public void validate(String setting, String value) throws Exception {
try {
// it's ok to clear the value
if (StringUtils.isEmpty(value)) return;
// simply calls pattern.compile().. if it's invalid, then pattern
// will
// throw an exception
Pattern.compile(value);
} catch (Exception e) {
Loggers.LOG.warn("Regex Validation Failed for setting: " + setting + "; value: " + value, e);
throw e;
}
}
protected List<IMediaResource> decorate(List<IMediaResource> originalChildren) {
// TODO: If our children is a LazyList, then what?
// ie, online videos are lazy, so we need to load a single "waiting"
// item until the
// the items are loaded. We also, need to ensure that we can reload this
// list once all items
// are loaded. We could add a "wait" here, but that defeats the purpose
// of using a lazy list
// the goal is only force a list to load once you actually get() the
// first item
try {
String parentTitle = null;
if (getParent() != null) parentTitle = getParent().getTitle();
String title = getTitle();
ElapsedTimer timer = new ElapsedTimer();
Loggers.VFS_LOG.debug(
"Begin Decoring View Items for: "
+ title
+ "; in "
+ parentTitle
+ " Original Size: "
+ originalChildren.size());
if (Loggers.VFS_LOG.isDebugEnabled()) {
StringBuffer sb = new StringBuffer();
sb.append(
"\nBefore Decorating Folder: "
+ title
+ "; in "
+ parentTitle
+ "; Items: "
+ originalChildren.size()
+ "\n");
for (IMediaResource r : originalChildren) {
sb.append(" + " + r.getTitle());
if (r instanceof IMediaFolder) sb.append(" (Folder)");
sb.append("\n");
}
sb.append("\n\n");
Loggers.VFS_LOG.debug(sb);
}
List<IMediaResource> set = new ArrayList<IMediaResource>();
Map<String, GroupNameMediaFolder> groups = new LinkedHashMap<String, GroupNameMediaFolder>();
boolean grouping = presentation.hasGroupers();
for (IMediaResource r : originalChildren) {
if (set.contains(r)) {
Loggers.VFS_LOG.warn("Set already contains " + r + " so it will not be added again.");
continue;
}
if (presentation.canAccept(r)) {
if (r instanceof IMediaFolder) {
Loggers.VFS_LOG.debug("Adding subfolder: " + r.getTitle() + " to " + title);
set.add(newViewFolder(factory, level + 1, this, (IMediaFolder) r));
} else if (r instanceof IMediaFile) {
if (!grouping) {
Loggers.VFS_LOG.debug("Adding Non Grouped Item: " + r.getTitle() + " to " + title);
// if we are not grouping, the just add it
if (!set.add(newViewItem(this, (IMediaFile) getItem(r)))) {
log.warn(
"Failed to add duplicate item to the view; item: " + r + "; view: " + title);
}
} else {
boolean grouped = false;
List<String> groupNames = presentation.getGroupNames(r);
if (groupNames != null && groupNames.size() > 0) {
for (String groupName : groupNames) {
if (!StringUtils.isEmpty(groupName)) {
String groupKey = createGroupKey(groupName);
GroupNameMediaFolder mf = groups.get(groupKey);
if (mf == null) {
Loggers.VFS_LOG.info(
"Creating Group Folder: "
+ groupName
+ " in "
+ title
+ " for "
+ r.getTitle());
mf = new GroupNameMediaFolder(this, groupName);
groups.put(groupKey, mf);
}
grouped = true;
Loggers.VFS_LOG.debug(
"Adding Resourse: " + r.getTitle() + " to group: " + groupName);
mf.addMediaResource(r);
}
}
}
if (!grouped) {
Loggers.VFS_LOG.warn(
"No Group Name for: " + r.getTitle() + "; Adding as a top level item");
// groupname return null, just add this as a
// toplevel item
set.add(newViewItem(this, (IMediaFile) getItem(r)));
}
}
} else {
Loggers.LOG.warn("ViewFolder cannot handle media type: " + r);
}
}
}
// transfer our grouped items to the set
if (groups.size() > 0) {
boolean pruning = presentation.isPruningSingleItems();
for (IMediaResource r : groups.values()) {
if (r instanceof IMediaFolder) {
IMediaFolder f = (IMediaFolder) r;
if (pruning && f.getChildren().size() == 1) {
IMediaResource ch = f.getChildren().get(0);
if (ch instanceof IMediaFolder) {
set.add(newViewFolder(factory, level + 1, this, (IMediaFolder) ch));
} else {
set.add(newViewItem(this, (IMediaFile) ch));
}
} else {
set.add(newViewFolder(factory, level + 1, this, (IMediaFolder) r));
}
} else {
set.add(newViewFolder(factory, level + 1, this, (IMediaFolder) r));
}
}
}
if (Loggers.VFS_LOG.isDebugEnabled()) {
StringBuffer sb = new StringBuffer();
sb.append(
"\nAfter Decorating Folder: "
+ title
+ "; in "
+ parentTitle
+ "; Items: "
+ set.size()
+ "\n");
for (IMediaResource r : set) {
sb.append(" + " + r.getTitle());
if (r instanceof IMediaFolder) sb.append(" (Folder)");
sb.append("\n");
}
sb.append("\n\n");
Loggers.VFS_LOG.debug(sb);
}
if (presentation.hasSorters()) {
Loggers.VFS_LOG.debug("Sorting View Items");
presentation.sort(set);
}
Loggers.VFS_LOG.info(
"End Decoring View Items for: "
+ getTitle()
+ "; in "
+ parentTitle
+ "; Time: "
+ timer.delta()
+ "ms");
return new ArrayList<IMediaResource>(set);
} catch (Throwable t) {
log.warn("Failed to create ViewFolder for: " + getTitle(), t);
return new ArrayList<IMediaResource>();
}
}