using composer package format, decoupling bsr libraries and implementation

src/Exception/AuthenticationException.php

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+<?php
+
+namespace BSR\Lib\Exception;
+
+/**
+ * This exception should be raised when an error
+ * related to the authentication mechanism arise.
+ *
+ * @package BSR\Lib\Exception
+ */
+class AuthenticationException extends WebException {
+    const USER_NOT_FOUND = 200;
+    const BAD_LOGIN = 201;
+    const AUTHENTICATION_FAILED = 202;
+    const LOGIN_EMPTY = 203;
+}

src/Exception/InvalidAttributeException.php

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+<?php
+
+namespace BSR\Lib\Exception;
+
+/**
+ * Exception raised when an invalid attribute name is accessed
+ */
+class InvalidAttributeException extends \Exception { }

src/Exception/SqlException.php

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+<?php
+
+namespace BSR\Lib\Exception;
+
+class SqlException extends \Exception
+{
+    private $query;
+
+    public function __construct($message = "Sql Error", $query = "")
+    {
+        $this->query = $query;
+        parent::__construct($message, 0);
+    }
+
+    public function getSqlError()
+    {
+        return $this->getMessage().' while executing: '.$this->query;
+    }
+}

src/Exception/UsageException.php

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+<?php
+
+namespace BSR\Lib\Exception;
+
+/**
+ * This exception should be raised by the WebService engine when
+ * there is an error preventing the correct calling of a method.
+ *
+ * @package BSR\Lib\Exception
+ */
+class UsageException extends WebException {
+    const NO_ARGS = 100;
+
+    const MISSING_METHOD = 101;
+    const BAD_METHOD = 102;
+
+    const TOO_FEW_ARGS = 103;
+    const TOO_MANY_ARGS = 104;
+}

src/Exception/WebException.php

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+<?php
+
+namespace BSR\Lib\Exception;
+
+class WebException extends \Exception
+{
+    private $exceptionName;
+
+    /**
+     * @param string $name
+     * @param string $reason
+     * @param int $code
+     */
+    function __construct($name, $reason, $code)
+    {
+        $this->exceptionName = $name;
+        parent::__construct($reason, $code);
+    }
+
+    public function getName()
+    {
+        return $this->exceptionName;
+    }
+}