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From jburwell <>
Subject [GitHub] cloudstack pull request: CLOUDSTACK-8562: Dynamic Role-Based API C...
Date Thu, 14 Apr 2016 20:33:52 GMT
Github user jburwell commented on a diff in the pull request:
    --- Diff: api/src/org/apache/cloudstack/acl/ ---
    @@ -0,0 +1,42 @@
    +// Licensed to the Apache Software Foundation (ASF) under one
    +// or more contributor license agreements.  See the NOTICE file
    +// distributed with this work for additional information
    +// regarding copyright ownership.  The ASF licenses this file
    +// to you under the Apache License, Version 2.0 (the
    +// "License"); you may not use this file except in compliance
    +// with the License.  You may obtain a copy of the License at
    +// Unless required by applicable law or agreed to in writing,
    +// software distributed under the License is distributed on an
    +// KIND, either express or implied.  See the License for the
    +// specific language governing permissions and limitations
    +// under the License.
    +package org.apache.cloudstack.acl;
    +public final class Rule {
    +    private final String rule;
    +    private final static String ALLOWED_PATTERN = "^[a-zA-Z0-9*]+$";
    +    public Rule(final String rule) {
    +        validate(rule);
    +        this.rule = rule;
    +    }
    +    public String toString() {
    +        return rule;
    +    }
    +    public static boolean validate(final String rule) throws InvalidParameterValueException
    +        if (Strings.isNullOrEmpty(rule) || !rule.matches(ALLOWED_PATTERN)) {
    --- End diff --
    Extract this validation logic into an immutable value class, ``Rule``, to encapsulate
this validation logic and provide strong type specification in lower layers.

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