Properties file for connection properties

[olle]

Support should be added for reading connection properties from a properties file.

[olle]

Ticket accepted.

[olle]

Design description:

1. New connection properties template file conf/connection.properties.in in client/servlet/ added. It contains settings for accessing files using SSL (Secure Sockets Layer) connection, and redirects for local cache when accessing files via URL.
2. Outermost Ant build file build.xml updated to include files connection.properties* when copying files from client/servlet/conf/ to www/WEB-INF/classes/ in distribution directory.
3. New class/file ConnectionPropertiesFile.java in api/core/ added. It loads connection.properties file and gives access to the settings in the latter.
4. Class/file core/Application.java in api/core/ updated:
   a. Private static method void createSSLFactory() updated to call new private static method String fetchProperty(Properties pf, String property, boolean replaceEmptyStringWithNull) to obtain property values.
   b, New private static method String fetchProperty(Properties pf, String property, boolean replaceEmptyStringWithNull) added. It fetches a property value from the properties file, if existing, otherwise from system properties. Optional replacement of empty string with null, when property value is returned.
   c. New private static method String fetchProperty(Properties pf, String property) added. It calls new private static method String fetchProperty(Properties pf, String property, boolean replaceEmptyStringWithNull) with argument replaceEmptyStringWithNull set to false, to obtain the vallue to return.

[olle]

(In [4542]) Refs #823. First version of support for reading connection properties from a properties file:

1. New connection properties template file conf/connection.properties.in in client/servlet/ added. It contains settings for accessing files using SSL (Secure Sockets Layer) connection, and redirects for local cache when accessing files via URL.
2. Outermost Ant build file build.xml updated to include files connection.properties* when copying files from client/servlet/conf/ to www/WEB-INF/classes/ in distribution directory.
3. New class/file ConnectionPropertiesFile.java in api/core/ added. It loads connection.properties file and gives access to the settings in the latter.
4. Class/file core/Application.java in api/core/ updated:
   a. Private static method void createSSLFactory() updated to call new private static method String fetchProperty(Properties pf, String property, boolean replaceEmptyStringWithNull) to obtain property values.
   b, New private static method String fetchProperty(Properties pf, String property, boolean replaceEmptyStringWithNull) added. It fetches a property value from the properties file, if existing, otherwise from system properties. Optional replacement of empty string with null, when property value is returned.
   c. New private static method String fetchProperty(Properties pf, String property) added. It calls new private static method String fetchProperty(Properties pf, String property, boolean replaceEmptyStringWithNull) with argument replaceEmptyStringWithNull set to false, to obtain the vallue to return.

[olle]

(In [4543]) Refs #823. Loading of connection property values in class/file core/Application.java in api/core/ updated:

1. Private static method String fetchProperty(Properties pf, String property, boolean replaceEmptyStringWithNull) updated to use log.info() calls for logging output, instead of log.debug().

[Fredrik Levander]

(In [4544]) Refs #823. Avoiding null pointer exception if connection properties file missing.

[Fredrik Levander]

(In [4551]) Refs #630. Added support for URIs with basic authentication. Refs #823. Added possibilities to specify alternate URIs in connection-properties file. Updated installation scripts for the connection-properties file.