com.facebook.presto.client

Class QueryResults

java.lang.Object

com.facebook.presto.client.QueryResults

All Implemented Interfaces:

QueryData, QueryStatusInfo

@Immutable
public class QueryResults
extends Object
implements QueryStatusInfo, QueryData

Constructor Summary

Constructors

Constructor and Description
QueryResults(String id, URI infoUri, URI partialCancelUri, URI nextUri, List<Column> columns, Iterable<List<Object>> data, StatementStats stats, QueryError error, List<PrestoWarning> warnings, String updateType, Long updateCount)
QueryResults(String id, URI infoUri, URI partialCancelUri, URI nextUri, List<Column> columns, List<List<Object>> data, StatementStats stats, QueryError error, List<PrestoWarning> warnings, String updateType, Long updateCount)

Method Summary

Modifier and Type	Method and Description
List<Column>	getColumns() Returns list of columns (with corresponding data types) present in the result set
Iterable<List<Object>>	getData() Returns an iterator to the payload (results)
QueryError	getError() Returns error encountered in query execution to the client The client is expected to check this field before consuming results
String	getId() Returns identifier of query that produces this result set
URI	getInfoUri() Returns the URI at the coordinator that provides information about the query
URI	getNextUri() Returns URI to get next batch of query results
URI	getPartialCancelUri() Returns URI to a leaf stage that is currently executing in order to issue a cancel signal
StatementStats	getStats() Returns cumulative statistics on the query being executed
Long	getUpdateCount() Returns a count of number of rows updated by the query
String	getUpdateType() Returns the update type, if any, of the query as determined by the Analyzer Could be INSERT, DELETE, CREATE, etc.
List<PrestoWarning>	getWarnings() Returns a list of warnings encountered in query execution to the client
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryResults

public QueryResults(String id,
                    URI infoUri,
                    URI partialCancelUri,
                    URI nextUri,
                    List<Column> columns,
                    List<List<Object>> data,
                    StatementStats stats,
                    QueryError error,
                    List<PrestoWarning> warnings,
                    String updateType,
                    Long updateCount)

QueryResults

public QueryResults(String id,
                    URI infoUri,
                    URI partialCancelUri,
                    URI nextUri,
                    List<Column> columns,
                    Iterable<List<Object>> data,
                    StatementStats stats,
                    QueryError error,
                    List<PrestoWarning> warnings,
                    String updateType,
                    Long updateCount)

Method Detail

getId

public String getId()

Returns identifier of query that produces this result set

Specified by:

getId in interface QueryStatusInfo

getInfoUri

public URI getInfoUri()

Returns the URI at the coordinator that provides information about the query

Specified by:

getInfoUri in interface QueryStatusInfo

Returns:

URI

getPartialCancelUri

@Nullable
public URI getPartialCancelUri()

Returns URI to a leaf stage that is currently executing in order to issue a cancel signal

Specified by:

getPartialCancelUri in interface QueryStatusInfo

Returns:

URI

getNextUri

@Nullable
public URI getNextUri()

Returns URI to get next batch of query results

Specified by:

getNextUri in interface QueryStatusInfo

Returns:

URI

getColumns

@Nullable
public List<Column> getColumns()

Returns list of columns (with corresponding data types) present in the result set

Specified by:

getColumns in interface QueryStatusInfo

getData

@Nullable
public Iterable<List<Object>> getData()

Returns an iterator to the payload (results)

Specified by:

getData in interface QueryData

getStats

public StatementStats getStats()

Returns cumulative statistics on the query being executed

Specified by:

getStats in interface QueryStatusInfo

Returns:

StatementStats

getError

@Nullable
public QueryError getError()

Returns error encountered in query execution to the client The client is expected to check this field before consuming results

Specified by:

getError in interface QueryStatusInfo

Returns:

QueryError

getWarnings

public List<PrestoWarning> getWarnings()

Returns a list of warnings encountered in query execution to the client

Specified by:

getWarnings in interface QueryStatusInfo

Returns:

PrestoWarning

getUpdateType

@Nullable
public String getUpdateType()

Returns the update type, if any, of the query as determined by the Analyzer Could be INSERT, DELETE, CREATE, etc.

Specified by:

getUpdateType in interface QueryStatusInfo

getUpdateCount

@Nullable
public Long getUpdateCount()

Returns a count of number of rows updated by the query

Specified by:

getUpdateCount in interface QueryStatusInfo

toString

public String toString()

Overrides:

toString in class Object