public Object and(Object[] arguments)
Produces an EXPRESSION object representing logical conjunction of
all arguments

 public Object divide(Object left,
    Object right)
Produces  an EXPRESSION object representing left divided by
right

 public Object equal(Object left,
    Object right)
Produces an EXPRESSION object representing the comparison:
left equals to right

 public Object expressionPath(Object expression,
    Object[] predicates,
    Object[] steps)
Produces an EXPRESSION object representing a filter expression

 public Object function(int code,
    Object[] args)
Produces an EXPRESSION object representing the computation of
a core function with the supplied arguments.

 public Object function(Object name,
    Object[] args)
Produces an EXPRESSION object representing the computation of
a library function with the supplied arguments.

 public Object greaterThan(Object left,
    Object right)
Produces an EXPRESSION object representing the comparison:
left greater than right

 public Object greaterThanOrEqual(Object left,
    Object right)
Produces an EXPRESSION object representing the comparison:
left greater than or equal to right

 public Object lessThan(Object left,
    Object right)
Produces an EXPRESSION object representing the comparison:
left less than right

 public Object lessThanOrEqual(Object left,
    Object right)
Produces an EXPRESSION object representing the comparison:
left less than or equal to right

 public Object literal(String value)
Produces an EXPRESSION object that represents a string constant.

 public Object locationPath(boolean absolute,
    Object[] steps)
Produces an EXPRESSION object representing a location path

 public Object minus(Object argument)
Produces an EXPRESSION object representing unary negation of the argument

 public Object minus(Object left,
    Object right)
Produces an EXPRESSION object representing left minus right

 public Object mod(Object left,
    Object right)
Produces  an EXPRESSION object representing left modulo
right

 public Object multiply(Object left,
    Object right)
Produces  an EXPRESSION object representing left multiplied by
right

 public Object nodeNameTest(Object qname)
Produces a NODE_TEST object that represents a node name test.

 public Object nodeTypeTest(int nodeType)
Produces a NODE_TEST object that represents a node type test.

 public Object notEqual(Object left,
    Object right)
Produces an EXPRESSION object representing the comparison:
left is not equal to right

 public Object number(String value)
Produces an EXPRESSION object that represents a numeric constant.

 public Object or(Object[] arguments)
Produces an EXPRESSION object representing logical disjunction of
all arguments

 public Object processingInstructionTest(String instruction)
Produces  a NODE_TEST object that represents a processing instruction
test.

 public Object qname(String prefix,
    String name)
Produces an QNAME that represents a name with an optional prefix.

 public Object step(int axis,
    Object nodeTest,
    Object[] predicates)
Produces a STEP object that represents a node test.

 public Object sum(Object[] arguments)
Produces an EXPRESSION object representing the sum of all argumens

 public Object union(Object[] arguments)
Produces an EXPRESSION object representing union of all node sets

 public Object variableReference(Object qName)
Produces an EXPRESSION object representing variable reference