DATACMNS-266 - Use new common Maven build infrastructure.

Simplified project setup to be a single module build again. Using Spring Data Build parent POM to simplify project setup. See https://github.com/SpringSource/spring-data-build#spring-data-build-infrastructure

src/main/java/org/springframework/data/authentication/UserCredentials.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2011-2012 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.springframework.data.authentication;
+
+import org.springframework.util.ObjectUtils;
+import org.springframework.util.StringUtils;
+
+/**
+ * Class used to provide credentials for username/password authentication
+ * 
+ * @author Thomas Risberg
+ * @author Oliver Gierke
+ */
+public class UserCredentials {
+
+	public static final UserCredentials NO_CREDENTIALS = new UserCredentials(null, null);
+
+	private final String username;
+	private final String password;
+
+	/**
+	 * Creates a new {@link UserCredentials} instance from the given username and password. Empty {@link String}s provided
+	 * will be treated like no username or password set.
+	 * 
+	 * @param username
+	 * @param password
+	 */
+	public UserCredentials(String username, String password) {
+		this.username = StringUtils.hasText(username) ? username : null;
+		this.password = StringUtils.hasText(password) ? password : null;
+	}
+
+	/**
+	 * Get the username to use for authentication.
+	 * 
+	 * @return the username
+	 */
+	public String getUsername() {
+		return username;
+	}
+
+	/**
+	 * Get the password to use for authentication.
+	 * 
+	 * @return the password
+	 */
+	public String getPassword() {
+		return password;
+	}
+
+	/**
+	 * Returns whether the credentials contain a username.
+	 * 
+	 * @return
+	 */
+	public boolean hasUsername() {
+		return this.username != null;
+	}
+
+	/**
+	 * Returns whether the credentials contain a password.
+	 * 
+	 * @return
+	 */
+	public boolean hasPassword() {
+		return this.password != null;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see java.lang.Object#equals(java.lang.Object)
+	 */
+	@Override
+	public boolean equals(Object obj) {
+
+		if (obj == this) {
+			return true;
+		}
+
+		if (obj == null || !getClass().equals(obj.getClass())) {
+			return false;
+		}
+
+		UserCredentials that = (UserCredentials) obj;
+
+		return ObjectUtils.nullSafeEquals(this.username, that.username)
+				&& ObjectUtils.nullSafeEquals(this.password, that.password);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see java.lang.Object#hashCode()
+	 */
+	@Override
+	public int hashCode() {
+
+		int result = 17;
+
+		result += 31 * ObjectUtils.nullSafeHashCode(username);
+		result += 31 * ObjectUtils.nullSafeHashCode(password);
+
+		return result;
+	}
+}

src/main/java/org/springframework/data/authentication/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Types to abstract authentication concepts.
+ */
+package org.springframework.data.authentication;