/** * Returns the template variable for the pagination parameters. * * @param parameter can be {@literal null}. * @return * @since 1.7 */ public TemplateVariables getPaginationTemplateVariables(MethodParameter parameter, UriComponents template) { String pagePropertyName = getParameterNameToUse(getPageParameterName(), parameter); String sizePropertyName = getParameterNameToUse(getSizeParameterName(), parameter); List<TemplateVariable> names = new ArrayList<>(); MultiValueMap<String, String> queryParameters = template.getQueryParams(); boolean append = !queryParameters.isEmpty(); for (String propertyName : Arrays.asList(pagePropertyName, sizePropertyName)) { if (!queryParameters.containsKey(propertyName)) { VariableType type = append ? REQUEST_PARAM_CONTINUED : REQUEST_PARAM; String description = String.format("pagination.%s.description", propertyName); names.add(new TemplateVariable(propertyName, type, description)); } } TemplateVariables pagingVariables = new TemplateVariables(names); return pagingVariables.concat(sortResolver.getSortTemplateVariables(parameter, template)); }
@Override public void enhance(UriComponentsBuilder builder, @Nullable MethodParameter parameter, Object value) { Assert.notNull(builder, "UriComponentsBuilder must not be null!"); if (!(value instanceof Pageable)) { return; } Pageable pageable = (Pageable) value; if (pageable.isUnpaged()) { return; } String pagePropertyName = getParameterNameToUse(getPageParameterName(), parameter); String sizePropertyName = getParameterNameToUse(getSizeParameterName(), parameter); int pageNumber = pageable.getPageNumber(); builder.replaceQueryParam(pagePropertyName, isOneIndexedParameters() ? pageNumber + 1 : pageNumber); builder.replaceQueryParam(sizePropertyName, pageable.getPageSize() <= getMaxPageSize() ? pageable.getPageSize() : getMaxPageSize()); this.sortResolver.enhance(builder, parameter, pageable.getSort()); }