public String buildCompleteKey() {
String ret = keyFragment;
PropertyKeyTreeNode currentParent = this.parent;
while (currentParent != null && currentParent.getKeyFragment() != null) {
ret = currentParent.getKeyFragment() + "." + ret;
currentParent = currentParent.parent;
}
return ret;
}
/**
* Collects into the target set my key from the root and my children's keys.
*
* @param targetSet the set where to place the keys
* @return the exact same set provided as input, for convenience.
*/
public Set<String> collectKeys(Set<String> targetSet) {
String mykey = buildCompleteKey();
targetSet.add(mykey);
for (PropertyKeyTreeNode node : children.values()) {
node.collectKeys(targetSet);
}
return targetSet;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((keyFragment == null) ? 0 : keyFragment.hashCode());
result = prime * result + ((parent == null) ? 0 : parent.hashCode());
return result;
}
public void storeKey(String key) {
if (key == null) {
throw new IllegalArgumentException("Cannot send null key!");
}
if (StringUtils.isEmpty(key)) {
// we have nothing else to do.
return;
}
int dotIndex = key.indexOf('.');
String childKey = null;
// leaf
if (dotIndex == -1) {
childKey = key;
} else {
childKey = key.substring(0, dotIndex);
}
// store the new children.
PropertyKeyTreeNode childNode = children.get(childKey);
if (childNode == null) {
childNode = new PropertyKeyTreeNode(childKey, this);
children.put(childKey, childNode);
}
if (dotIndex == -1) {
// nothing else to do
return;
}
// continue to store any subkeys that might be
childNode.storeKey(key.substring(dotIndex + 1));
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (getClass() != obj.getClass()) return false;
PropertyKeyTreeNode other = (PropertyKeyTreeNode) obj;
if (keyFragment == null) {
if (other.keyFragment != null) return false;
} else if (!keyFragment.equals(other.keyFragment)) return false;
if (parent == null) {
if (other.parent != null) return false;
} else if (!parent.equals(other.parent)) return false;
return true;
}