Example usage for org.springframework.data.mongodb.core.aggregation Fields Fields

Introduction

In this page you can find the example usage for org.springframework.data.mongodb.core.aggregation Fields Fields.

Prototype

private Fields(List<Field> fields) 

Source Link

Document

Creates a new Fields instance using the given Field s.

Usage

From source file:com.epam.ta.reportportal.database.dao.TestItemRepositoryCustomImpl.java

@SuppressWarnings({ "rawtypes", "unchecked" })
@Override/*w w  w  .  j a  v a2  s .c  o  m*/
public Map<String, String> getMostFailedTestCases(List<Launch> launches, String criteria) {
    Map<String, String> output = new HashMap<>();
    List<String> launchIds = launches.stream().map(Launch::getId).collect(toList());

    GroupOperation operationTotal = new GroupOperation(Fields.fields("$name")).count().as("count");
    Aggregation aggregationTotal = newAggregation(match(where(LAUNCH_REFERENCE).in(launchIds)),
            match(where(HAS_CHILD).is(false)), operationTotal);
    AggregationResults<Map> resultTotal = mongoTemplate.aggregate(aggregationTotal, TestItem.class, Map.class);
    Map<String, String> values = resultTotal.getMappedResults().stream()
            .collect(toMap(key -> key.get("_id").toString(), value -> value.get("count").toString()));

    GroupOperation operation = new GroupOperation(Fields.fields("$name")).count().as("count").last("$startTime")
            .as("last");
    Aggregation aggregation = newAggregation(match(where(LAUNCH_REFERENCE).in(launchIds)),
            match(where(criteria).is(1)), match(where(HAS_CHILD).is(false)), operation);

    AggregationResults<Map> result = mongoTemplate.aggregate(aggregation, TestItem.class, Map.class);
    for (Map<String, ?> entry : result.getMappedResults()) {
        String itemName = String.valueOf(entry.get("_id"));
        String count = String.valueOf(entry.get("count"));
        Date date = (Date) entry.get("last");
        String total = values.get(itemName);
        // FIXME Update dirty # separator with common case
        // And update after {@link MostFailedTestCasesFilterStrategy}
        output.put(itemName, count + "#" + date.getTime() + "#" + total);
    }
    return output;
}

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