com.logicalclocks.hsfs.constructor

Class QueryBase<T extends QueryBase<T,T2,T3>,T2 extends FeatureGroupBase,T3>

java.lang.Object

com.logicalclocks.hsfs.constructor.QueryBase<T,T2,T3>

Direct Known Subclasses:

Query, Query

public class QueryBase<T extends QueryBase<T,T2,T3>,T2 extends FeatureGroupBase,T3>
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected FilterLogic	filter
protected Boolean	hiveEngine
protected List<Join<T>>	joins
protected FeatureGroupBase	leftFeatureGroup
protected Long	leftFeatureGroupEndTime
protected Long	leftFeatureGroupStartTime
protected List<Feature>	leftFeatures
protected Integer	limit
protected static org.slf4j.Logger	LOGGER
protected QueryConstructorApi	queryConstructorApi
protected StorageConnectorApi	storageConnectorApi

Constructor Summary

Constructors

Constructor and Description
QueryBase(FeatureGroupBase leftFeatureGroup, List<Feature> leftFeatures)

Method Summary

Modifier and Type	Method and Description
T	appendFeature(Feature feature)
T	asOf(String wallclockTime) Perform time travel on the given Query.
T	asOf(String wallclockTime, String excludeUntil) Perform time travel on the given Query.
T	filter(Filter filter)
T	filter(FilterLogic filter)
boolean	isTimeTravel()
T	join(T subquery)
T	join(T subquery, JoinType joinType)
T	join(T subquery, JoinType joinType, String prefix)
T	join(T subquery, List<String> on)
T	join(T subquery, List<String> on, JoinType joinType)
T	join(T subquery, List<String> on, JoinType joinType, String prefix)
T	join(T subquery, List<String> leftOn, List<String> rightOn)
T	join(T subquery, List<String> leftOn, List<String> rightOn, JoinType joinType)
T	join(T subquery, List<String> leftOn, List<String> rightOn, JoinType joinType, String prefix)
T	join(T subquery, List<String> leftOn, List<String> rightOn, String prefix)
T	join(T subquery, String prefix)
T	joinFeatures(T subquery, List<Feature> on)
T	joinFeatures(T subquery, List<Feature> on, JoinType joinType)
T	joinFeatures(T subquery, List<Feature> on, JoinType joinType, String prefix)
T	joinFeatures(T subquery, List<Feature> leftOn, List<Feature> rightOn)
T	joinFeatures(T subquery, List<Feature> leftOn, List<Feature> rightOn, JoinType joinType)
T	joinFeatures(T subquery, List<Feature> leftOn, List<Feature> rightOn, JoinType joinType, String prefix)
T	joinFeatures(T subquery, List<Feature> leftOn, List<Feature> rightOn, String prefix)
T	joinFeatures(T subquery, List<Feature> on, String prefix)
T	limit(int n) Limit the number of rows returned by the query.
T	pullChanges(String wallclockStartTime, String wallclockEndTime) Deprecated. use asOf(wallclockEndTime, wallclockStartTime) instead
protected void	setLeftFeatureGroup(T2 leftFeatureGroup)
<T2> String	sql(Storage storage, Class<T2> fsQueryType)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

leftFeatureGroup

protected FeatureGroupBase leftFeatureGroup

leftFeatures

protected List<Feature> leftFeatures

leftFeatureGroupStartTime

protected Long leftFeatureGroupStartTime

leftFeatureGroupEndTime

protected Long leftFeatureGroupEndTime

joins

protected List<Join<T extends QueryBase<T,T2,T3>>> joins

filter

protected FilterLogic filter

hiveEngine

protected Boolean hiveEngine

limit

protected Integer limit

LOGGER

protected static final org.slf4j.Logger LOGGER

queryConstructorApi

protected QueryConstructorApi queryConstructorApi

storageConnectorApi

protected StorageConnectorApi storageConnectorApi

Constructor Detail

QueryBase

public QueryBase(FeatureGroupBase leftFeatureGroup,
                 List<Feature> leftFeatures)

Method Detail

setLeftFeatureGroup

protected void setLeftFeatureGroup(T2 leftFeatureGroup)

sql

public <T2> String sql(Storage storage,
                       Class<T2> fsQueryType)

join

public T join(T subquery)

join

public T join(T subquery,
              String prefix)

join

public T join(T subquery,
              List<String> on)

join

public T join(T subquery,
              List<String> leftOn,
              List<String> rightOn)

join

public T join(T subquery,
              List<String> leftOn,
              List<String> rightOn,
              String prefix)

join

public T join(T subquery,
              JoinType joinType)

join

public T join(T subquery,
              JoinType joinType,
              String prefix)

join

public T join(T subquery,
              List<String> on,
              JoinType joinType)

join

public T join(T subquery,
              List<String> on,
              JoinType joinType,
              String prefix)

join

public T join(T subquery,
              List<String> leftOn,
              List<String> rightOn,
              JoinType joinType)

join

public T join(T subquery,
              List<String> leftOn,
              List<String> rightOn,
              JoinType joinType,
              String prefix)

joinFeatures

public T joinFeatures(T subquery,
                      List<Feature> on)

joinFeatures

public T joinFeatures(T subquery,
                      List<Feature> on,
                      String prefix)

joinFeatures

public T joinFeatures(T subquery,
                      List<Feature> leftOn,
                      List<Feature> rightOn)

joinFeatures

public T joinFeatures(T subquery,
                      List<Feature> leftOn,
                      List<Feature> rightOn,
                      String prefix)

joinFeatures

public T joinFeatures(T subquery,
                      List<Feature> on,
                      JoinType joinType)

joinFeatures

public T joinFeatures(T subquery,
                      List<Feature> on,
                      JoinType joinType,
                      String prefix)

joinFeatures

public T joinFeatures(T subquery,
                      List<Feature> leftOn,
                      List<Feature> rightOn,
                      JoinType joinType)

joinFeatures

public T joinFeatures(T subquery,
                      List<Feature> leftOn,
                      List<Feature> rightOn,
                      JoinType joinType,
                      String prefix)

asOf

public T asOf(String wallclockTime)
       throws FeatureStoreException,
              ParseException

Perform time travel on the given Query. This method returns a new Query object at the specified point in time. This can then either be read into a Dataframe or used further to perform joins or construct a training dataset.

Parameters:

wallclockTime - point in time

Returns:

Query

Throws:

FeatureStoreException

ParseException

asOf

public T asOf(String wallclockTime,
              String excludeUntil)
       throws FeatureStoreException,
              ParseException

Perform time travel on the given Query. This method returns a new Query object at the specified point in time. This can then either be read into a Dataframe or used further to perform joins or construct a training dataset.

Parameters:

wallclockTime - point in time

excludeUntil - point in time

Returns:

Query

Throws:

FeatureStoreException

ParseException

pullChanges

public T pullChanges(String wallclockStartTime,
                     String wallclockEndTime)
              throws FeatureStoreException,
                     ParseException

Deprecated. use asOf(wallclockEndTime, wallclockStartTime) instead

Reads changes that occurred between specified points in time.

Parameters:

wallclockStartTime - start date.

wallclockEndTime - end date.

Returns:

Query

Throws:

FeatureStoreException

ParseException

filter

public T filter(Filter filter)

filter

public T filter(FilterLogic filter)

appendFeature

public T appendFeature(Feature feature)

limit

public T limit(int n)

Limit the number of rows returned by the query.

Parameters:

n - maximum number of rows to return

Returns:

Query

isTimeTravel

public boolean isTimeTravel()