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[utils] / security / usermgt / src / main / java / org / wamblee / security / authentication / RegexpNameValidator.java

diff --git a/security/usermgt/src/main/java/org/wamblee/security/authentication/RegexpNameValidator.java b/security/usermgt/src/main/java/org/wamblee/security/authentication/RegexpNameValidator.java
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+++ b/security/usermgt/src/main/java/org/wamblee/security/authentication/RegexpNameValidator.java
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+/*
+ * Copyright 2005-2010 the original author or authors.
+ * 
+ * Licensed 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
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */ 
+package org.wamblee.security.authentication;
+
+import org.wamblee.security.authentication.UserMgtException.Reason;
+
+/**
+ * Validation of names based on a regular expression.
+ * 
+ * @author Erik Brakkee
+ */
+public class RegexpNameValidator implements NameValidator {
+    /**
+     * Convenience pattern for an id.
+     */
+    public static final String ID_PATTERN = "[a-zA-Z]+[a-zA-Z0-9]*";
+
+    /**
+     * Convenience pattern for a password consisting of at least 6 characters.
+     */
+    public static final String PASSWORD_PATTERN = ".{6}.*";
+
+    /**
+     * Pattern to use.
+     */
+    private String pattern;
+
+    /**
+     * Reason to use when validation fails.
+     */
+    private Reason reason;
+
+    /**
+     * Message to report.
+     */
+    private String message;
+
+    /**
+     * Validates a regular expression.
+     * 
+     * @param aPattern
+     *            Pattern that names must comply to.
+     * @param aReason
+     *            Reason to report when validation fails.
+     * @param aMessage
+     *            Message to report.
+     */
+    public RegexpNameValidator(String aPattern, Reason aReason, String aMessage) {
+        pattern = aPattern;
+        reason = aReason;
+        message = aMessage;
+    }
+
+    /**
+     * Convenience constructor with all string parameters. Useful for
+     * configuration in Spring.
+     * 
+     * @param aPattern
+     *            Pattern to use.
+     * @param aReason
+     *            Reason.
+     * @param aMessage
+     *            Message.
+     */
+    public RegexpNameValidator(String aPattern, String aReason, String aMessage) {
+        this(aPattern, Reason.valueOf(aReason), aMessage);
+    }
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see org.wamblee.usermgt.NameValidator#validate(java.lang.String)
+     */
+    @Override
+    public boolean validate(String aName) {
+        return aName.matches(pattern);
+    }
+}