With regard to the first aim, the book is very much a success: The writing is clear and concise, informative examples motivate each new topic, terminology is clearly defined, and descriptions of key algorithms are provided in the running text along with short (usually one-line) descriptions of each piece of relevant related work.
with regard to Liu's second aim of covering all important topics in the field, the degree to which the book succeeds is a matter of, well, opinion.