Moved over some of the security stuff from Photos.

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

diff --git a/security/src/main/java/org/wamblee/usermgt/RegexpNameValidator.java b/security/src/main/java/org/wamblee/usermgt/RegexpNameValidator.java
new file mode 100644 (file)
index 0000000..fdc220f
--- /dev/null
+++ b/security/src/main/java/org/wamblee/usermgt/RegexpNameValidator.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2005 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.usermgt;
+
+import org.wamblee.usermgt.UserMgtException.Reason;
+
+/**
+ * Validation of names based on a regular expression. 
+ */
+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)
+     */
+    public void validate(String aName) throws UserMgtException {
+        if ( !aName.matches(_pattern)) { 
+            throw new UserMgtException(_reason, _message); 
+        }
+    }
+
+}