MathML Query Generator
======================

Converts individual content MathML elements to equivalent
XQuery statements in DB2 dialect.

The content MathML elements may be given as

1. [MathWebSearch](http://search.mathweb.org/) expressions or
2. annotation-xml elements with the attribute ```encoding="MathML-Content"```.

##Details 

If a document contains multiple elements, only the first MathWebSearch expression is processed.
If no MathWebSearch element is available, the first annotation-xml element will be used.


MathML Query Generator
======================

Converts individual content MathML elements to equivalent
XQuery statements in DB2 dialect.

The content MathML elements may be given as

1. [MathWebSearch](http://search.mathweb.org/) expressions,
2. annotation-xml elements with the attribute ```encoding="MathML-Content"``` or
3. MathML tags that contain content MathML only

##Details 

If a document contains multiple elements, only the first MathWebSearch expression is processed.

If no MathWebSearch element is available, the first annotation-xml element will be used.

If no annotation-xml Math element is available, the first math element will be used.

Support for content only MathML tags
Support for content only MathML tags

Also fixes:
* visibility of constructor
* error handling for invalid input
  (returns null now)

Change-Id: I95256301d5c456915fd0f8e6b8b3ac49f4112288
