saveError(messages -> messages.addErrorsDocidNotFound(GLOBAL, form.docId));
            return redirect(ErrorAction.class);
        }

        final String content = viewHelper.createCacheContent(doc, form.hq);
        if (content == null) {
            saveError(messages -> messages.addErrorsDocidNotFound(GLOBAL, form.docId));
            return redirect(ErrorAction.class);
        }

import javax.validation.constraints.Size;

import org.lastaflute.web.validation.Required;

public class CacheForm {

    @Required
    @Size(max = 100)
    public String docId;

    public String[] hq;

    // for error page

    public String q;

    public String num;

    public String sort;

    public String lang;

    public Map<String, String[]> fields = new HashMap<>();

        if (highlightQueries != null) {
            final StringBuilder buf = new StringBuilder(100);
            highlightQueries.stream().forEach(q -> {
                buf.append("&hq=").append(LaFunctions.u(q));
            });
            data.setAppendHighlightParams(buf.toString());
        }

        queryResponseList.setExecTime(systemHelper.getCurrentTimeAsLong() - startTime);

    /** The key of the message: End Time */
    public static final String LABELS_END_TIME = "{labels.endTime}";

    /** The key of the message: hq */
    public static final String LABELS_HQ = "{labels.hq}";

    /** The key of the message: Source */
    public static final String LABELS_INPUTS = "{labels.inputs}";

    /** The key of the message: Logging */