Example usage for org.apache.mahout.cf.taste.common NoSuchUserException NoSuchUserException

Introduction

In this page you can find the example usage for org.apache.mahout.cf.taste.common NoSuchUserException NoSuchUserException.

Prototype

public NoSuchUserException() 

Source Link

Usage

From source file:alto.plugin.webradio.recommender.MongoDBDataModel.java

License:Apache License

private void checkData(String userID, Iterable<List<String>> items, boolean add)
        throws NoSuchUserException, NoSuchItemException {
    Preconditions.checkNotNull(userID);//from  ww w. j  a v a 2  s  . c  o m
    Preconditions.checkNotNull(items);
    Preconditions.checkArgument(!userID.isEmpty(), "userID is empty");
    for (List<String> item : items) {
        Preconditions.checkNotNull(item.get(0));
        Preconditions.checkArgument(!item.get(0).isEmpty(), "item is empty");
    }
    if (userIsObject && !ID_PATTERN.matcher(userID).matches()) {
        throw new IllegalArgumentException();
    }
    for (List<String> item : items) {
        if (itemIsObject && !ID_PATTERN.matcher(item.get(0)).matches()) {
            throw new IllegalArgumentException();
        }
    }
    if (!add && !isIDInModel(userID)) {
        throw new NoSuchUserException();
    }
    for (List<String> item : items) {
        if (!add && !isIDInModel(item.get(0))) {
            throw new NoSuchItemException();
        }
    }
}

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From source file:com.paradigma.recommender.db.MongoDBDataModel.java

License:Apache License

private void checkData(String userID, Iterable<List<String>> items, boolean add)
        throws NoSuchUserException, NoSuchItemException {
    Preconditions.checkNotNull(userID);//from  w  w  w .j av  a  2s.c o m
    Preconditions.checkNotNull(items);
    Preconditions.checkArgument(userID.length() > 0);
    for (List<String> item : items) {
        Preconditions.checkNotNull(item.get(0));
        Preconditions.checkArgument(item.get(0).length() > 0);
    }
    if (userIsObject && !ID_PATTERN.matcher(userID).matches()) {
        throw new IllegalArgumentException();
    }
    for (List<String> item : items) {
        if (itemIsObject && !ID_PATTERN.matcher(item.get(0)).matches()) {
            throw new IllegalArgumentException();
        }
    }
    if (!add && !isIDInModel(userID)) {
        throw new NoSuchUserException();
    }
    for (List<String> item : items) {
        if (!add && !isIDInModel(item.get(0))) {
            throw new NoSuchItemException();
        }
    }
}

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