public TreeVisitor getVisitor()

in camel-upgrade-recipes/src/main/java/org/apache/camel/upgrade/camel40/java/CamelHttpRecipe.java [49:125]
66 lines of code
4 McCabe index (conditional complexity)

    public TreeVisitor<?, ExecutionContext> getVisitor() {

        return RecipesUtil.newVisitor("org.apache.http..*", new AbstractCamelJavaVisitor() {
            @Override
            protected J.Import doVisitImport(J.Import _import, ExecutionContext context) {
                doAfterVisit(
                        new ChangeType(
                                "org.apache.http.HttpHost",
                                "org.apache.hc.core5.http.HttpHost", true).getVisitor());
                doAfterVisit(
                        new ChangeType(
                                "org.apache.http.client.protocol.HttpClientContext",
                                "org.apache.hc.client5.http.protocol.HttpClientContext", true).getVisitor());
                doAfterVisit(
                        new ChangeType(
                                "org.apache.http.protocol.HttpContext",
                                "org.apache.hc.core5.http.protocol.HttpContext", true).getVisitor());
                doAfterVisit(
                        new ChangeType(
                                "org.apache.http.impl.auth.BasicScheme",
                                "org.apache.hc.client5.http.impl.auth.BasicScheme", true).getVisitor());
                doAfterVisit(
                        new ChangeType(
                                "org.apache.http.impl.client.BasicAuthCache",
                                "org.apache.hc.client5.http.impl.auth.BasicAuthCache", true).getVisitor());
                doAfterVisit(
                        new ChangeType(
                                "org.apache.http.impl.client.BasicCredentialsProvider",
                                "org.apache.hc.client5.http.impl.auth.BasicCredentialsProvider", true).getVisitor());
                doAfterVisit(
                        new ChangeType(
                                "org.apache.http.auth.AuthScope",
                                "org.apache.hc.client5.http.auth.AuthScope", true).getVisitor());
                doAfterVisit(
                        new ChangeType(
                                "org.apache.http.auth.UsernamePasswordCredentials",
                                "org.apache.hc.client5.http.auth.UsernamePasswordCredentials", true).getVisitor());
                doAfterVisit(
                        new ChangeType(
                                "org.apache.http.conn.ssl.NoopHostnameVerifier",
                                "org.apache.hc.client5.http.conn.ssl.NoopHostnameVerifier", true).getVisitor());

                return super.doVisitImport(_import, context);
            }

            @Override
            protected J.FieldAccess doVisitFieldAccess(J.FieldAccess fieldAccess, ExecutionContext context) {
                J.FieldAccess f = super.doVisitFieldAccess(fieldAccess, context);

                //The component has been upgraded to use Apache HttpComponents v5
                //AuthScope.ANY -> new AuthScope(null, -1)
                if ("ANY".equals(f.getSimpleName()) && "org.apache.http.auth.AuthScope".equals(f.getType().toString())) {
                    JavaTemplate.Builder templateBuilder = JavaTemplate.builder("new AuthScope(null, -1)");
                    J.NewClass nc = templateBuilder.build().apply(updateCursor(fieldAccess),
                            f.getCoordinates().replace())
                            .withPrefix(f.getPrefix());
                    getCursor().putMessage("authScopeNewClass", nc);
                }
                return f;
            }

            @Override
            public @Nullable J postVisit(J tree, ExecutionContext context) {
                J j = super.postVisit(tree, context);

                //use a new class instead of original element
                J.NewClass newClass = getCursor().getMessage("authScopeNewClass");
                if (newClass != null) {
                    maybeAddImport("org.apache.hc.client5.http.auth.AuthScope", null, false);
                    return newClass;
                }

                return j;
            }

        });
    }