Database to Filesystem porter does not work

"Failed to execute the [groovy] macro. Cause: [startup failed: Script3.groovy: -1: Mixing private and public/protected methods of the same name causes multimethods to be disabled and is forbidden to avoid surprising behaviour. Renaming the private methods will solve the problem. @ line -1, column -1. Script3.groovy: 62: Mixing private and public/protected methods of the same name causes multimethods to be disabled and is forbidden to avoid surprising behaviour. Renaming the private methods will solve the problem. @ line 62, column 1. private void main() ^ 2 errors ]. Click on this message for details."

org.xwiki.rendering.macro.MacroExecutionException: Failed to evaluate Script Macro for content [import com.xpn.xwiki.doc.XWikiAttachment;
import com.xpn.xwiki.doc.XWikiDocument;
import com.xpn.xwiki.doc.DeletedAttachment;
import org.xwiki.store.legacy.doc.internal.ListAttachmentArchive;
import com.xpn.xwiki.store.XWikiAttachmentStoreInterface;
import org.xwiki.store.legacy.store.internal.FilesystemAttachmentStore;
import com.xpn.xwiki.store.AttachmentVersioningStore;
import org.xwiki.store.legacy.store.internal.XWikiHibernateTransaction;
import com.xpn.xwiki.store.AttachmentRecycleBinStore;
import com.xpn.xwiki.web.Utils;
import com.xpn.xwiki.XWikiContext;
import com.xpn.xwiki.XWiki;
import com.xpn.xwiki.XWikiException;
import org.xwiki.store.filesystem.internal.FilesystemStoreTools;
import org.apache.commons.lang.exception.ExceptionUtils;
import org.hibernate.ObjectNotFoundException;

private void printIntro(final XWiki wiki)
{
    println("= Filesystem attachment storage porting script =");

    println("== Step 1: Switch to Filesystem attachments. ==");

    boolean ret = isFilesystemStore(wiki.getAttachmentStore()) \
        && isFilesystemStore(wiki.getAttachmentVersioningStore()) \
        && isFilesystemStore(wiki.getAttachmentRecycleBinStore());

    println(getStoreLine(isFilesystemStore(wiki.getAttachmentStore()),
                         wiki.getAttachmentStore()));
    println(getStoreLine(isFilesystemStore(wiki.getAttachmentVersioningStore()),
                         wiki.getAttachmentVersioningStore()));
    println(getStoreLine(isFilesystemStore(wiki.getAttachmentRecycleBinStore()),
                         wiki.getAttachmentRecycleBinStore()));

    if (!ret) {
        println("Please edit your xwiki.cfg file by modifying "
            + "the attachment store lines to read as follows:");
        println("xwiki.store.attachment.hint = file");
        println("xwiki.store.attachment.versioning.hint = file");
        println("xwiki.store.attachment.recyclebin.hint = file");
        println("Also make sure they are not commented out.");
    }

    println("== Step 2: Add this directory to your backup routine. ==");
    println("This is your storage directory, "
        + "when filesystem attachments are enabled you have to back this up "
        + "as part of your data backup routine.\n");
    println(Utils.getComponent(FilesystemStoreTools.class).storageDir.getAbsolutePath());

    println("== Step 3: Copy attachments from database to filesystem. ==");
    println("Now you are ready to copy the data over from your database to the filesystem. "
        + "It is prudent to leave the attachments in the database since this is still experimental "
        + "and in most situations the attachment data is not bothersome just sitting in the "
        + "database. As such, this script contains no facility to delete entries from the database.");
    println("If anything goes wrong in this function, it will fail with an error message, "
        + "you should get the stack trace (probably in the log file) and keep it to "
        + "confuse and humiliate the developers with. No harm should be done since this only loads "
        + "from the database and only saves to the filesystem.");
}

main();
private void main()
{
    final XWikiContext xc = xcontext.getContext();
    final XWiki wiki = xc.getWiki();

    int startAt = 0;
    int seconds = 20;
    boolean dryRun = true;
    boolean verbose = false;
    boolean go = request.getMethod().equals("POST") && request.getParameter("doIt") != null;
    boolean ajax = "plain".equals(request.getParameter("xpage"));
    int endedAt = 0;

    if (!ajax) {
        this.printIntro(wiki);
    }

    if (go) {
        startAt = Integer.parseInt(request.getParameter("startAt"));
        seconds = Integer.parseInt(request.getParameter("seconds"));
        dryRun = "on".equals(request.getParameter("dryRun"));
        verbose = "on".equals(request.getParameter("verbose"));
        endedAt = this.doIt(startAt, seconds, dryRun, verbose, ajax);
        if (ajax) {
            if (endedAt == -1) {
                this.printFooter();
            } else {
                println("\n{{html clean=false}}<meta name='endedAt' content='"
                        + endedAt + "' />{{/html}}");
            }
            return;
        }
    }

    this.printJs();

    if (!go || endedAt > startAt) {
        println("\n{{html clean=false}}");
        println("<div id='javascriptSpace'></div>");
        println("<form action='?time=" + System.nanoTime()
                + "#doItForm' id='doItForm' method='POST'>");
        println("<input type='hidden' name='seconds' value='" + seconds + "' />");
        println("<input type='hidden' id='startAt' name='startAt' value='" + endedAt + "' />");
        println("<dl>");
        println("<dt><label for='dryRun'>Dry Run, don't save any files.</label></dt>");
        println("<dd><input type='checkbox' name='dryRun' checked='"
            + ((dryRun) ? "checked" : "") + "' /></dd>");

        println("<dt><label for='verbose'>Verbose, show every attachment.</label></dt>");
        println("<dd><input type='checkbox' name='verbose' checked='"
            + ((verbose) ? "checked" : "") + "' /></dd>");
        println("</dl>");
        println("<input type='hidden' name='doIt' value='yes' />")
        println("<input type='submit' name='start' value='"
            + ((endedAt > startAt) ? "Continue" : "Start") + "' />");
        println("</form>");
        println("<style>#xwikidata { display:none }</style>")
        println("{{/html}}\n");
        return;
    }

    this.printFooter();
}

private void printFooter()
{
    println("== Step 4: make sure everything is working. ==");
    println("Check to make sure your attachments are still there, if an attachment is broken, "
        + "it will appear to be there but on opening it will tell you the attachment does not exist. "
        + "If something goes terribly wrong with filesystem attachments, you may have your old "
        + "attachment system back simply by changing the lines in the xwiki.cfg file and restarting "
        + "the container. HOWEVER: This will not preserve attachments which were uploaded **after** "
        + "switching to filesystem attachments so as users edit the system you will become "
        + "locked in to filesystem attachments unless a script is written to do the "
        + "inverse of this one.");
    println("Despite being experimental, the filesystem attachment storage is quite stable and the "
        + "risk of actually losing something so that it is unrecoverable is very remote.");
    println("NOTE: This must be run seperately in each subwiki.");
    println("\n\nEnjoy and give feedback.");

}

private static boolean isFilesystemStore(final Object store)
{
    return store.getClass().getName().contains("Filesystem");
}

private static String getStoreLine(final boolean isFilesystem, final Object store)
{
    return "(%style='color:" + (isFilesystem ? "#080" : "#d00") + "'%)(((* " + store + ")))";
}

private void printJs()
{
println("""\n{{html}}<script>
        var isAtBottom = function() {
            var vp = document.viewport;
            return vp.getScrollOffsets().top + vp.getHeight() + 30 > window.body.getHeight();
        };

        Event.observe(document, "dom:loaded", function() {
            var doItForm = document.getElementById("doItForm");
            var workspace = document.getElementById("javascriptSpace");
            var params = {
                xpage: "plain",
                seconds: doItForm.seconds.value,
                startAt: doItForm.startAt.value,
                doIt: "yes"
            };
            var shouldContinue;

            var doBlock = function(startAt) {
                params.startAt = startAt;
                new Ajax.Request(window.location.href, {
                    method: "POST",
                    parameters: params,
                    onSuccess: function(transport) {
                        var div = document.createElement("div");
                        div.innerHTML = transport.responseText;

                        var wasAtBottom = isAtBottom();
                        workspace.innerHTML += transport.responseText;
                        if (wasAtBottom || startAt == 0) {
                            doItForm.scrollTo();
                        }

                        var metas = div.getElementsByTagName("meta");
                        if (metas.length > 0 && shouldContinue) {
                            doBlock(metas[0].content);
                            return;
                        } else if (metas.length > 0) {
                            doItForm.startAt.value = metas[0].content;
                            doItForm.start.value = "Continue";
                        } else {
                            doItForm.parentNode.removeChild(doItForm);
                        }
                        reachedEnd();
                    }
                });
            };

            var reachedEnd = function() {
                Event.observe(doItForm, "submit", start);
                Event.stopObserving(doItForm, "submit", stop);
            };

            var stop = function(ev) {
                event.stop();
                shouldContinue = false;
                reachedEnd();
            };

            var start = function(ev) {
                event.stop();
                params.dryRun = (doItForm.dryRun.checked) ? "on" : undefined;
                params.verbose = (doItForm.verbose.checked) ? "on" : undefined;
                workspace.innerHTML = "";
                shouldContinue = true;
                doBlock(doItForm.startAt.value);
                doItForm.start.value = "Abort";
                Event.stopObserving(doItForm, "submit", start);
                Event.observe(doItForm, "submit", stop);
            };

            Event.observe(doItForm, "submit", start);
        });
        </script>{{/html}}""");
}

/**
 * Port all attachments from the original form to filesystem attachment store.
 * Do one batch at a time so the user can see the progress and it won't time out.
 *
 * @param startAt the index of the first job to do, 0 to start at the beginning.
 * @param seconds the number of seconds to run for before returning.
 * @param dryRun don't save any files if this is true.
 * @return the number of the first job which was not done. This can be startAt in the next call.
 *         -1 if the operation is complete.
 */
private int doIt(int startAt, int seconds, boolean dryRun, boolean verbose, boolean ajax)
{
    final XWikiContext xc = this.xcontext.getContext();
    final XWiki wiki = xc.getWiki();
    final FilesystemAttachmentStore fileAttachStore =
        Utils.getComponent(XWikiAttachmentStoreInterface.class, "file");
    final XWikiAttachmentStoreInterface defAttachStore =
        Utils.getComponent(XWikiAttachmentStoreInterface.class, "hibernate");
    final AttachmentVersioningStore defAttachmentVersioningStore =
        Utils.getComponent(AttachmentVersioningStore.class, "hibernate");

    int count = 0;
    long stopTime = System.currentTimeMillis() + (1000 * seconds);

    println("(%style='color:#00d'%)(((");
    if (verbose && startAt == 0) {
        println("\n== Attachments ==\n");
    }
    for (String docName : xwiki.searchDocuments("where 1=1")) {
        if (count < startAt) {
            count++;
            continue;
        } else if (stopTime < System.currentTimeMillis()) {
            println(")))");
            return count;
        } else {
            count++;
        }
        final XWikiDocument doc = xwiki.getDocument(docName).getDocument();
        try {
            final XWikiHibernateTransaction transaction = new XWikiHibernateTransaction(xc);

            if (verbose) {
                println("* [[" + doc.getFullName() + "]]");
            }
            // This is the equivilant of doc.getAttachmentList() but there is an issue which
            // causes some attachments to be lost.
            // http://jira.xwiki.org/browse/XWIKI-7936
            def hql = "select att from XWikiAttachment att WHERE att.docId=?";
            for (XWikiAttachment attach : xwiki.search(hql, [doc.getId()])) {
                attach.setDoc(doc);
                if (verbose) {
                    println("** [[attach:" + doc.getFullName() + "@" + attach.getFilename() + "]]");
                }
                try {
                    fileAttachStore.loadAttachmentContent(attach, xc, false);
                    continue;
                } catch (XWikiException noAttachmentInFilesystem) {
                    // no such attachment, let's save it.
                }
                try {
                    try {
                        defAttachStore.loadAttachmentContent(attach, xc, true);
                    } catch (XWikiException notInHibernate) {
                         final Throwable wrapped = notInHibernate.getException();
                         if (wrapped && wrapped instanceof ObjectNotFoundException) {
                             println("(%style='color:#c80'%)(((");
                             println("Unable to find this attachment [[attach:" + attach.getFilename()
                                     + "@" + doc.getFullName() + "]] in the database, "
                                     + "it may be the result of database corruption from a failed "
                                     + "upload prior to the fixing of "
                                     + "[[http://jira.xwiki.org/browse/XWIKI-5055]]");
                             println("xwikiattachment_content.XWA_ID = " + attach.getId());
                             println(")))");
                         }
                    }
                    defAttachmentVersioningStore.loadArchive(attach, xc, true);
                    try {
                        // http://jira.xwiki.org/jira/browse/XWIKI-6199
                        attach.getAttachment_archive().getVersions();
                    } catch (NullPointerException e) {
                        attach.setAttachment_archive(new ListAttachmentArchive([attach]));
                    }
                    // Setup the runnables to do the save but don't save just yet.
                    fileAttachStore.getAttachmentContentSaveRunnable(attach, false, xc)
                        .runIn(transaction);
                } catch (Exception e) {
                    println("(%style='color:#d00'%)(((");
                    println("Error in [" + doc.getFullName() + ":" + attach.getFilename() + "]"
                            + e.getMessage());
                    println(ExceptionUtils.getStackTrace(e));
                    println(")))");
                }
            }
            if (!dryRun) {
                transaction.start();
            }
        } catch (Exception e) {
            println("(%style='color:#d00'%)(((");
            println("Failed to port attachments for document [" + doc.getFullName() + "]");
            println(e.getMessage());
            println(ExceptionUtils.getStackTrace(e));
            println(")))");
        }
    }
    println(")))");
    if (startAt < count) {
        int attachCount =
            xwiki.search("select count(at) from XWikiDocument as doc, "
                         + "XWikiAttachment as at where at.docId = doc.id").get(0).intValue();
        println("**[" + attachCount + "] attachments.**");
    }


    // And now for the deleted attachments.
    final AttachmentRecycleBinStore fileBin =
        Utils.getComponent(AttachmentRecycleBinStore.class, "file");
    final AttachmentRecycleBinStore defaultBin =
        Utils.getComponent(AttachmentRecycleBinStore.class, "hibernate");

    if (verbose && startAt < count) {
        println("\n== Deleted Attachments ==\n");
    }
    List<Object[]> entries =
        xwiki.search("select da.id, da.docName, da.filename, da.date from DeletedAttachment as da");
    if (verbose && entries.size() == 0) {
        println("\nnone.");
    }
    int delAttachCount = 0;
    for (Object[] o : entries) {
        long delAttachId = o[0];
        final String docName = o[1];
        final String fileName = o[2];
        final Date deleteDate = o[3];
        delAttachCount++;
        if (count < startAt) {
            if (verbose && !ajax) {
                println("* [[" + docName + "]] - " + fileName);
            }
            count++;
            continue;
        } else if (stopTime < System.currentTimeMillis()) {
            return count;
        }
        count++;

        try {
            final DeletedAttachment delAttach = 
                defaultBin.getDeletedAttachment(delAttachId, xc, true);
            // Can't use the transaction runnable here because (non-filesystem)
            // deleted attachments hold all content in memory so they have to be
            // handled one at a time.
            final XWikiAttachment attach = delAttach.restoreAttachment(null, xc);
            try {
                // http://jira.xwiki.org/jira/browse/XWIKI-6199
                attach.getAttachment_archive().getVersions();
            } catch (NullPointerException e) {
                attach.setAttachment_archive(new ListAttachmentArchive([attach]));
            }
            if (!dryRun) {
                fileBin.saveToRecycleBin(attach,
                                         delAttach.getDeleter(),
                                         delAttach.getDate(),
                                         xc,
                                         false);
            }

            if (verbose) {
                println("* [[" + docName + "]]");
                println("** " + fileName + " - Deleted: " + deleteDate);
            }
        } catch (Exception e) {
            println("(%style='color:#d00'%)(((");
            println("* [[" + docName + "]] - " + fileName + " - Deleted: " + deleteDate);
            println(e.getMessage());
            println(")))");
            println(ExceptionUtils.getStackTrace(e));
        }
    }
    println("\n**[" + delAttachCount + "] deleted attachments.**");
    return -1;
}]
	at org.xwiki.rendering.macro.script.AbstractJSR223ScriptMacro.evaluateBlock(AbstractJSR223ScriptMacro.java:199)
	at org.xwiki.rendering.macro.script.AbstractJSR223ScriptMacro.evaluateBlock(AbstractJSR223ScriptMacro.java:60)
	at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182)
	at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58)
	at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:272)
	at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
	at org.xwiki.rendering.internal.transformation.DefaultTransformationManager.performTransformations(DefaultTransformationManager.java:95)
	at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:263)
	at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:133)
	at org.xwiki.display.internal.DocumentContentDisplayer.display(DocumentContentDisplayer.java:58)
	at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:96)
	at org.xwiki.display.internal.DefaultDocumentDisplayer.display(DefaultDocumentDisplayer.java:39)
	at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:123)
	at org.xwiki.sheet.internal.SheetDocumentDisplayer.display(SheetDocumentDisplayer.java:52)
	at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:68)
	at org.xwiki.display.internal.ConfiguredDocumentDisplayer.display(ConfiguredDocumentDisplayer.java:42)
	at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1173)
	at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1136)
	at com.xpn.xwiki.doc.XWikiDocument.getRenderedContent(XWikiDocument.java:1188)
	at com.xpn.xwiki.api.Document.getRenderedContent(Document.java:717)
	at sun.reflect.GeneratedMethodAccessor462.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:567)
	at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:71)
	at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:142)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.xwiki.velocity.introspection.TryCatchDirective.render(TryCatchDirective.java:72)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:198)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.evaluateContent(InternalTemplateManager.java:726)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:627)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:605)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:571)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:557)
	at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:65)
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1896)
	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1874)
	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:822)
	at sun.reflect.GeneratedMethodAccessor230.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:198)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.evaluateContent(InternalTemplateManager.java:726)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:627)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:605)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:571)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:557)
	at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:65)
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1896)
	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:1874)
	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:822)
	at sun.reflect.GeneratedMethodAccessor230.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:198)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.evaluateContent(InternalTemplateManager.java:726)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:627)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:605)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:571)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:557)
	at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:65)
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:1896)
	at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:449)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:193)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
	at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:115)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
	at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:127)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
	at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
	at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:137)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
	at org.eclipse.jetty.server.Server.handle(Server.java:499)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
	at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
	at java.lang.Thread.run(Thread.java:745)
Caused by: javax.script.ScriptException: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
Script4.groovy: -1: Mixing private and public/protected methods of the same name causes multimethods to be disabled and is forbidden to avoid surprising behaviour. Renaming the private methods will solve the problem.
 @ line -1, column -1.
Script4.groovy: 62: Mixing private and public/protected methods of the same name causes multimethods to be disabled and is forbidden to avoid surprising behaviour. Renaming the private methods will solve the problem.
 @ line 62, column 1.
   private void main()
   ^

2 errors

	at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:159)
	at org.xwiki.rendering.macro.script.AbstractJSR223ScriptMacro.eval(AbstractJSR223ScriptMacro.java:340)
	at org.xwiki.rendering.macro.script.AbstractJSR223ScriptMacro.evaluateBlock(AbstractJSR223ScriptMacro.java:249)
	at org.xwiki.rendering.macro.script.AbstractJSR223ScriptMacro.evaluateBlock(AbstractJSR223ScriptMacro.java:194)
	... 145 more
Caused by: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
Script4.groovy: -1: Mixing private and public/protected methods of the same name causes multimethods to be disabled and is forbidden to avoid surprising behaviour. Renaming the private methods will solve the problem.
 @ line -1, column -1.
Script4.groovy: 62: Mixing private and public/protected methods of the same name causes multimethods to be disabled and is forbidden to avoid surprising behaviour. Renaming the private methods will solve the problem.
 @ line 62, column 1.
   private void main()
   ^

2 errors

	at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:310)
	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1075)
	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:591)
	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:569)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:546)
	at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298)
	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268)
	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:254)
	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:212)
	at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.getScriptClass(GroovyScriptEngineImpl.java:374)
	at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:151)
	... 148 more