Examples with ColumnProjection com.yahoo.elide.datastores.aggregation.query.ColumnProjection used on opensource projects

Example 36 with ColumnProjection

use of com.yahoo.elide.datastores.aggregation.query.ColumnProjection in project elide by yahoo.

the class SQLTimeDimensionProjection method nest.

@Override
public Pair<ColumnProjection, Set<ColumnProjection>> nest(Queryable source, MetaDataStore store, boolean joinInOuter) {
    List<Reference> references = new ExpressionParser(store).parse(source, getExpression());
    boolean requiresJoin = SQLColumnProjection.requiresJoin(references);
    String columnId = source.isRoot() ? getName() : getAlias();
    boolean inProjection = source.getColumnProjection(columnId, getArguments(), true) != null;
    ColumnProjection outerProjection;
    Set<ColumnProjection> innerProjections;
    if (requiresJoin && joinInOuter) {
        String outerProjectionExpression = toPhysicalReferences(source, store);
        outerProjection = withExpression(outerProjectionExpression, inProjection);
        innerProjections = SQLColumnProjection.extractPhysicalReferences(source, references, store);
    } else {
        outerProjection = SQLTimeDimensionProjection.builder().name(name).alias(alias).valueType(valueType).columnType(columnType).grain(new TimeDimensionGrain(this.getName(), grain.getGrain())).expression("{{$" + this.getSafeAlias() + "}}").projected(isProjected()).arguments(arguments).timeZone(timeZone).build();
        innerProjections = new LinkedHashSet<>(Arrays.asList(this));
    }
    return Pair.of(outerProjection, innerProjections);
}