cf.addConstraint( new SingleFieldConstraint( "x" ) );
p.addConstraint( cf );
SingleFieldConstraint sf = new SingleFieldConstraint( "q" );
sf.setFieldBinding( "abc" );
p.addConstraint( sf );
SingleFieldConstraint sf2 = new SingleFieldConstraint( "q" );
sf2.setFieldBinding( "qed" );
cf.addConstraint( sf2 );
m.addLhsItem( p );