com.qubole.quark.plugins.qubole

Class QuboleDB

java.lang.Object

com.qubole.quark.plugins.qubole.QuboleDB

All Implemented Interfaces:

DataSource, Executor

Direct Known Subclasses:

DbTapDb, HiveDb, SparkDb

public abstract class QuboleDB
extends Object
implements Executor

Created by dev on 11/13/15.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	endpoint
protected String	token

Method Summary

Modifier and Type	Method and Description
void	cleanup()
protected Iterator<Object>	convertToIterator(com.qubole.qds.sdk.java.entities.ResultValue resultValue)
protected abstract com.google.common.collect.ImmutableMap<String,Integer>	getDataTypes()
protected com.qubole.qds.sdk.java.client.QdsClient	getQdsClient()
protected abstract Map<String,List<com.qubole.qds.sdk.java.entities.SchemaOrdinal>>	getSchemaListDescribed()
com.google.common.collect.ImmutableMap<String,org.apache.calcite.schema.Schema>	getSchemas()
abstract boolean	isCaseSensitive()
protected Map<String,List<com.qubole.qds.sdk.java.entities.SchemaOrdinal>>	mergeSchemas(Map<String,List<com.qubole.qds.sdk.java.entities.SchemaOrdinal>> schemas1, Map<String,List<com.qubole.qds.sdk.java.entities.SchemaOrdinal>> schemas2) Merges two schema Maps.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.qubole.quark.plugins.Executor

executeQuery

Methods inherited from interface com.qubole.quark.plugin.DataSource

getDefaultSchema, getProductName, getSqlDialect

Field Detail

token

protected String token

endpoint

protected String endpoint

Method Detail

getSchemaListDescribed

protected abstract Map<String,List<com.qubole.qds.sdk.java.entities.SchemaOrdinal>> getSchemaListDescribed()
                                                                                                    throws ExecutionException,
                                                                                                           InterruptedException

Throws:

ExecutionException

InterruptedException

getDataTypes

protected abstract com.google.common.collect.ImmutableMap<String,Integer> getDataTypes()

isCaseSensitive

public abstract boolean isCaseSensitive()

Specified by:

isCaseSensitive in interface DataSource

getQdsClient

protected com.qubole.qds.sdk.java.client.QdsClient getQdsClient()

cleanup

public void cleanup()
             throws Exception

Specified by:

cleanup in interface Executor

Throws:

Exception

getSchemas

public com.google.common.collect.ImmutableMap<String,org.apache.calcite.schema.Schema> getSchemas()
                                                                                           throws QuarkException

Specified by:

getSchemas in interface DataSource

Throws:

QuarkException

convertToIterator

protected Iterator<Object> convertToIterator(com.qubole.qds.sdk.java.entities.ResultValue resultValue)

mergeSchemas

protected Map<String,List<com.qubole.qds.sdk.java.entities.SchemaOrdinal>> mergeSchemas(Map<String,List<com.qubole.qds.sdk.java.entities.SchemaOrdinal>> schemas1,
                                                                                        Map<String,List<com.qubole.qds.sdk.java.entities.SchemaOrdinal>> schemas2)

Merges two schema Maps. 'putAll' method can't be used because if the any of the key is same in the maps, then it will get overwritten. for e.g. if map1 = {'public' -> list1}, map2 = {'public' -> list2} then map1.putAll(map2) will return map2 ({'public' -> list2}) i.e. map1 gets overwritten

Parameters:

schemas1 - schema map1

schemas2 - schema map2

Returns:

returns merged Map