Example usage for org.springframework.data.solr.core.query GroupOptions getGroupByFunctions

Introduction

In this page you can find the example usage for org.springframework.data.solr.core.query GroupOptions getGroupByFunctions.

Prototype

public List<Function> getGroupByFunctions() 

Source Link

Document

List of Function s to perform grouping by.

Usage

From source file:org.springframework.data.solr.core.DefaultQueryParser.java

private void processGroupOptions(SolrQuery solrQuery, Query query) {

    GroupOptions groupOptions = query.getGroupOptions();

    if (groupOptions == null || (CollectionUtils.isEmpty(groupOptions.getGroupByFields())
            && CollectionUtils.isEmpty(groupOptions.getGroupByFunctions())
            && CollectionUtils.isEmpty(groupOptions.getGroupByQueries()))) {
        return;/*w  ww  .  j a  v  a2  s  .  c o  m*/
    }

    solrQuery.set(GroupParams.GROUP, true);
    solrQuery.set(GroupParams.GROUP_MAIN, groupOptions.isGroupMain());
    solrQuery.set(GroupParams.GROUP_FORMAT, "grouped");

    if (!CollectionUtils.isEmpty(groupOptions.getGroupByFields())) {
        for (Field field : groupOptions.getGroupByFields()) {
            solrQuery.add(GroupParams.GROUP_FIELD, field.getName());
        }
    }

    if (!CollectionUtils.isEmpty(groupOptions.getGroupByFunctions())) {
        for (Function function : groupOptions.getGroupByFunctions()) {
            String functionFragment = createFunctionFragment(function, 0);
            setObjectNameOnGroupQuery(query, function, functionFragment);
            solrQuery.add(GroupParams.GROUP_FUNC, functionFragment);
        }
    }

    if (!CollectionUtils.isEmpty(groupOptions.getGroupByQueries())) {
        for (Query groupQuery : groupOptions.getGroupByQueries()) {
            String queryFragment = getQueryString(groupQuery);
            setObjectNameOnGroupQuery(query, groupQuery, queryFragment);
            solrQuery.add(GroupParams.GROUP_QUERY, queryFragment);
        }
    }

    if (groupOptions.getSort() != null) {

        for (Order order : groupOptions.getSort()) {
            solrQuery.add(GroupParams.GROUP_SORT,
                    order.getProperty().trim() + " " + (order.isAscending() ? ORDER.asc : ORDER.desc));
        }
    }

    if (groupOptions.getCachePercent() > 0) {
        solrQuery.add(GroupParams.GROUP_CACHE_PERCENTAGE, String.valueOf(groupOptions.getCachePercent()));
    }

    if (groupOptions.getLimit() != null && groupOptions.getLimit() >= 0) {
        solrQuery.set(GroupParams.GROUP_LIMIT, groupOptions.getLimit());
    }

    if (groupOptions.getOffset() != null && groupOptions.getOffset() >= 0) {
        solrQuery.set(GroupParams.GROUP_OFFSET, groupOptions.getOffset());
    }

    solrQuery.set(GroupParams.GROUP_TOTAL_COUNT, groupOptions.isTotalCount());
    solrQuery.set(GroupParams.GROUP_FACET, groupOptions.isGroupFacets());
    solrQuery.set(GroupParams.GROUP_TRUNCATE, groupOptions.isTruncateFacets());
}

---