/**
* Construct a new MockCrawlableDataset and add it as a child of this MockCrawlableDataset. (If a
* child with the same name already exists, it will be replaced.)
*
* @param childName the name of the new child.
* @param isCollection whether the new child is a collection
* @return the new child MockCrawlableDataset
*/
public MockCrawlableDataset addChild(String childName, boolean isCollection) {
String[] pathSegments = CrawlableDatasetUtils.getPathSegments(childName);
if (!CrawlableDatasetUtils.isValidRelativePath(pathSegments) || pathSegments.length > 1)
throw new IllegalArgumentException(String.format("Child name [%s] is not valid.", childName));
MockCrawlableDataset childCrDs =
new MockCrawlableDataset(this.path + "/" + childName, isCollection);
childCrDs.setParent(this);
if (this.childrenMap == null) {
this.childrenMap = new HashMap<String, CrawlableDataset>();
this.childrenList = new ArrayList<CrawlableDataset>();
}
CrawlableDataset prevCrDs = this.childrenMap.put(childCrDs.getName(), childCrDs);
if (prevCrDs != null) this.childrenList.remove(prevCrDs);
this.childrenList.add(childCrDs);
return childCrDs;
}
public CrawlableDataset getDescendant(String relativePath) {
if (!this.isCollection) throw new IllegalStateException("Dataset not a collection.");
String[] pathSegments = CrawlableDatasetUtils.getPathSegments(relativePath);
if (!CrawlableDatasetUtils.isValidRelativePath(pathSegments))
throw new IllegalArgumentException(String.format("Ill-formed relative path [%s]", path));
boolean singleLevelPath = pathSegments.length == 1;
CrawlableDataset curCrDs = this.childrenMap.get(pathSegments[0]);
if (curCrDs != null) {
if (singleLevelPath) return curCrDs;
return curCrDs.getDescendant(CrawlableDatasetUtils.stepDownRelativePath(pathSegments));
} else {
curCrDs = new MockCrawlableDataset(this.getPath() + "/" + pathSegments[0], singleLevelPath);
((MockCrawlableDataset) curCrDs).setExists(false);
if (singleLevelPath) return curCrDs;
return curCrDs.getDescendant(CrawlableDatasetUtils.stepDownRelativePath(pathSegments));
}
}