ie.getRightOperand());
final NumberLiteral zero = ast.newNumberLiteral();
astRewrite.replace(ie.getRightOperand(), zero, null);
final MethodInvocation newInvocation = ast.newMethodInvocation();
newInvocation.setExpression(leftExpCopy);
newInvocation.setName(ast.newSimpleName("compareTo")); //$NON-NLS-1$
newInvocation.arguments().add(rightExpCopy);
astRewrite.replace(ie.getLeftOperand(), newInvocation, null);