/**
* Return the value corresponding to the id.
*
* @param id id
* @return value
*/
public String getIdValue(final URI id) {
if (id == null) {
return null;
}
final URI localId = id.normalize();
return idMap.get(localId);
}
/**
* Add topic id-value pairs to idMap.
*
* @param id id
* @param value value
*/
public void addId(final URI id, final String value) {
if (id != null && value != null) {
final URI localId = id.normalize();
final String localValue = value.trim();
idMap.put(localId, localValue);
}
}
/**
* Add topic id to the idMap.
*
* @param id topic id
* @return updated topic id
*/
public String addId(final URI id) {
if (id == null) {
return null;
}
final URI localId = id.normalize();
index++;
final String newId = PREFIX + Integer.toString(index);
idMap.put(localId, newId);
return newId;
}
/**
* Find the topic id from idMap.
*
* @param id topic id
* @return true if find and false otherwise
*/
public boolean findId(final URI id) {
return id != null && idMap.containsKey(id.normalize());
}
/** Resets all internal data structures. */
public void reset() {
idMap.clear();
visitSet.clear();
index = 0;
}