Package com.databricks.jdbc.client.impl.thrift.commons

Class DatabricksThriftHelper

java.lang.Object

com.databricks.jdbc.client.impl.thrift.commons.DatabricksThriftHelper

public class DatabricksThriftHelper
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static List<TStatusCode>	SUCCESS_STATUS_LIST

Constructor Summary

Constructors

Constructor	Description
DatabricksThriftHelper()

Method Summary

Modifier and Type	Method	Description
static String	byteBufferToString(ByteBuffer buffer)
static void	checkDirectResultsForErrorStatus(TSparkDirectResults directResults, String context)
static List<List<Object>>	convertColumnarToRowBased(TRowSet rowSet)	Converts columnar data from a TRowSet to a row-based list format.
static ExternalLink	createExternalLink(TSparkArrowResultLink chunkInfo, long chunkIndex)
static List<List<Object>>	extractValues(List<TColumn> columnList)	In metadata operations, a list of singleton lists is obtained.
static List<List<Object>>	extractValuesColumnar(List<TColumn> columnList)
static List<List<Object>>	extractValuesFromRowSet(TRowSet rowSet)	Extracts and returns the values from each column of a TRowSet as a list of lists.
static int	getColumnCount(TGetResultSetMetadataResp resultManifest)
static TNamespace	getNamespace(String catalog, String schema)
static long	getRowCount(TRowSet resultData)
static String	getStatementId(TOperationHandle operationHandle)
static com.databricks.sdk.service.sql.ColumnInfoTypeName	getTypeFromTypeDesc(TTypeDesc typeDesc)
static void	verifySuccessStatus(TStatusCode statusCode, String errorContext)

Methods inherited from class java.lang.Object

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

Field Detail

SUCCESS_STATUS_LIST

public static final List<TStatusCode> SUCCESS_STATUS_LIST

Constructor Detail

DatabricksThriftHelper

public DatabricksThriftHelper()

Method Detail

getNamespace

public static TNamespace getNamespace(String catalog,
                                      String schema)

byteBufferToString

public static String byteBufferToString(ByteBuffer buffer)

createExternalLink

public static ExternalLink createExternalLink(TSparkArrowResultLink chunkInfo,
                                              long chunkIndex)

getStatementId

public static String getStatementId(TOperationHandle operationHandle)

verifySuccessStatus

public static void verifySuccessStatus(TStatusCode statusCode,
                                       String errorContext)
                                throws DatabricksHttpException

Throws:

DatabricksHttpException

getColumnCount

public static int getColumnCount(TGetResultSetMetadataResp resultManifest)

extractValues

public static List<List<Object>> extractValues(List<TColumn> columnList)

In metadata operations, a list of singleton lists is obtained. This function extracts metadata values from these TColumn lists based on the data type set in the column.

Parameters:

columnList - the TColumn from which to extract values

Returns:

a singleton list of metadata result

extractValuesColumnar

public static List<List<Object>> extractValuesColumnar(List<TColumn> columnList)

getTypeFromTypeDesc

public static com.databricks.sdk.service.sql.ColumnInfoTypeName getTypeFromTypeDesc(TTypeDesc typeDesc)

convertColumnarToRowBased

public static List<List<Object>> convertColumnarToRowBased(TRowSet rowSet)

Converts columnar data from a TRowSet to a row-based list format.

Parameters:

rowSet - the TRowSet containing the data

Returns:

a list where each sublist represents a row with column values, or an empty list if rowSet is empty

extractValuesFromRowSet

public static List<List<Object>> extractValuesFromRowSet(TRowSet rowSet)

Extracts and returns the values from each column of a TRowSet as a list of lists. Each sublist represents a column of values. Returns an empty list if the input is null or contains no columns.

Parameters:

rowSet - the TRowSet to extract values from

Returns:

a list of lists, each containing the values of a column, or an empty list if the input is invalid

getRowCount

public static long getRowCount(TRowSet resultData)

checkDirectResultsForErrorStatus

public static void checkDirectResultsForErrorStatus(TSparkDirectResults directResults,
                                                    String context)
                                             throws DatabricksHttpException

Throws:

DatabricksHttpException