org.teiid.translator.accumulo

Class AccumuloExecutionFactory

java.lang.Object

org.teiid.translator.ExecutionFactory<ConnectionFactory,AccumuloConnection>

org.teiid.translator.accumulo.AccumuloExecutionFactory

@Translator(name="accumulo",
            description="Accumulo Translator, reads and writes the data to Accumulo Key/Value store")
public class AccumuloExecutionFactory
extends ExecutionFactory<ConnectionFactory,AccumuloConnection>

Nested Class Summary

Nested classes/interfaces inherited from class org.teiid.translator.ExecutionFactory

ExecutionFactory.Format, ExecutionFactory.NullOrder, ExecutionFactory.SupportedJoinCriteria, ExecutionFactory.TransactionSupport

Field Summary

Fields inherited from class org.teiid.translator.ExecutionFactory

DEFAULT_MAX_FROM_GROUPS, DEFAULT_MAX_IN_CRITERIA_SIZE, DEFAULT_MAX_PROJECTED_COLUMNS

Constructor Summary

Constructors

Constructor and Description
AccumuloExecutionFactory()

Method Summary

Modifier and Type	Method and Description
ResultSetExecution	createResultSetExecution(QueryExpression command, ExecutionContext executionContext, RuntimeMetadata metadata, AccumuloConnection connection)
UpdateExecution	createUpdateExecution(Command command, ExecutionContext executionContext, RuntimeMetadata metadata, AccumuloConnection connection)
MetadataProcessor<AccumuloConnection>	getMetadataProcessor() Get a MetadataProcessor for the translator to read the metadata.
int	getQueryThreadsCount()
boolean	returnsSingleUpdateCount() True if the only a single value is returned for the update count.
void	setQueryThreadsCount(int queryThreadsCount)
void	start() Initialize the connector with supplied configuration
boolean	supportsAggregatesCountStar() Support indicates connector can accept the COUNT(*) aggregate function
boolean	supportsBulkUpdate() Whether the source supports updates with multiple value sets
boolean	supportsCompareCriteriaEquals() Support indicates connector accepts criteria of form (element = constant)
boolean	supportsCompareCriteriaOrdered() Support indicates connector accepts criteria of form (element <=|>= constant) The query engine will may pushdown queries containing < or > if NOT is also supported.
boolean	supportsInCriteria() Support indicates connector accepts criteria of form (element IN set)
boolean	supportsIsNullCriteria() Support indicates connector accepts criteria of form (element IS NULL)
boolean	supportsNotCriteria() Support indicates connector accepts logical criteria NOT
boolean	supportsOnlyLiteralComparison()
boolean	supportsOrCriteria() Support indicates connector accepts logical criteria connected by OR

Methods inherited from class org.teiid.translator.ExecutionFactory

addPushDownFunction, areLobsUsableAfterClose, closeConnection, createDirectExecution, createExecution, createProcedureExecution, getCacheDirective, getCollationLocale, getConnection, getConnection, getDefaultNullOrder, getDirectQueryProcedureName, getExcludedCommonTableExpressionName, getInstance, getLanguageFactory, getMaxDependentInPredicates, getMaxFromGroups, getMaxInCriteriaSize, getMaxProjectedColumns, getMetadata, getNativeQueryProcedureName, getPushDownFunctions, getRequiredLikeEscape, getSupportedFunctions, getSupportedJoinCriteria, getTransactionSupport, getTypeFacility, initCapabilities, isCopyLobs, isForkable, isImmutable, isSourceRequired, isSourceRequiredForCapabilities, isSourceRequiredForMetadata, isThreadBound, requiresCriteria, setCollationLocale, setCopyLobs, setDirectQueryProcedureName, setExcludedCommonTableExpressionName, setImmutable, setMaxDependentInPredicates, setMaxInCriteriaSize, setNativeQueryProcedureName, setRequiresCriteria, setSourceRequired, setSourceRequiredForMetadata, setSupportedJoinCriteria, setSupportsDirectQueryProcedure, setSupportsFullOuterJoins, setSupportsInnerJoins, setSupportsNativeQueries, setSupportsOrderBy, setSupportsOuterJoins, setSupportsSelectDistinct, setThreadBound, setTransactionSupport, supportsAdvancedOlapOperations, supportsAggregatesAvg, supportsAggregatesCount, supportsAggregatesCountBig, supportsAggregatesDistinct, supportsAggregatesEnhancedNumeric, supportsAggregatesMax, supportsAggregatesMin, supportsAggregatesSum, supportsAliasedTable, supportsArrayAgg, supportsArrayType, supportsBatchedUpdates, supportsCommonTableExpressions, supportsCompareCriteriaOrderedExclusive, supportsConvert, supportsCorrelatedSubqueries, supportsCorrelatedSubqueryLimit, supportsDependentJoins, supportsDirectQueryProcedure, supportsElementaryOlapOperations, supportsExcept, supportsExistsCriteria, supportsFormatLiteral, supportsFullDependentJoins, supportsFullOuterJoins, supportsFunctionsInGroupBy, supportsGeographyType, supportsGroupBy, supportsGroupByMultipleDistinctAggregates, supportsGroupByRollup, supportsHaving, supportsInCriteriaSubquery, supportsInlineViews, supportsInnerJoins, supportsInsertWithQueryExpression, supportsIntersect, supportsIsDistinctCriteria, supportsLateralJoin, supportsLateralJoinCondition, supportsLikeCriteria, supportsLikeCriteriaEscapeCharacter, supportsLikeRegex, supportsListAgg, supportsMultipleOpenExecutions, supportsNativeQueries, supportsOnlyCorrelatedSubqueries, supportsOnlyFormatLiterals, supportsOnlyLateralJoinProcedure, supportsOnlySingleTableGroupBy, supportsOnlyTimestampAddLiteral, supportsOrderBy, supportsOrderByNullOrdering, supportsOrderByUnrelated, supportsOrderByWithExtendedGrouping, supportsOuterJoins, supportsPartialFiltering, supportsProcedureParameterExpression, supportsProcedureTable, supportsQuantifiedCompareCriteriaAll, supportsQuantifiedCompareCriteriaSome, supportsRecursiveCommonTableExpressions, supportsRowLimit, supportsRowOffset, supportsScalarSubqueries, supportsScalarSubqueryProjection, supportsSearchedCaseExpressions, supportsSelectDistinct, supportsSelectExpression, supportsSelectExpressionArrayType, supportsSelectWithoutFrom, supportsSelfJoins, supportsSetQueryLimitOffset, supportsSetQueryOrderBy, supportsSimilarTo, supportsStringAgg, supportsSubqueryCommonTableExpressions, supportsSubqueryInOn, supportsUnions, supportsUpsert, supportsWindowDistinctAggregates, supportsWindowFrameClause, supportsWindowFunctionCumeDist, supportsWindowFunctionNthValue, supportsWindowFunctionNtile, supportsWindowFunctionPercentRank, supportsWindowOrderByWithAggregates, useAnsiJoin, useBindingsForDependentJoin

Methods inherited from class java.lang.Object

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

Constructor Detail

AccumuloExecutionFactory

public AccumuloExecutionFactory()

Method Detail

start

public void start()
           throws TranslatorException

Description copied from class: ExecutionFactory

Initialize the connector with supplied configuration

Overrides:

start in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

Throws:

TranslatorException

getQueryThreadsCount

@TranslatorProperty(display="Execution Query Threads",
                    description="Number of threads to use on Accumulo for Query",
                    advanced=true)
public int getQueryThreadsCount()

setQueryThreadsCount

public void setQueryThreadsCount(int queryThreadsCount)

createResultSetExecution

public ResultSetExecution createResultSetExecution(QueryExpression command,
                                                   ExecutionContext executionContext,
                                                   RuntimeMetadata metadata,
                                                   AccumuloConnection connection)
                                            throws TranslatorException

Overrides:

createResultSetExecution in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

Throws:

TranslatorException

createUpdateExecution

public UpdateExecution createUpdateExecution(Command command,
                                             ExecutionContext executionContext,
                                             RuntimeMetadata metadata,
                                             AccumuloConnection connection)
                                      throws TranslatorException

Overrides:

createUpdateExecution in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

Throws:

TranslatorException

getMetadataProcessor

public MetadataProcessor<AccumuloConnection> getMetadataProcessor()

Description copied from class: ExecutionFactory

Get a MetadataProcessor for the translator to read the metadata. Typically this will return a new instance.

Overrides:

getMetadataProcessor in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

Returns:

supportsAggregatesCountStar

public boolean supportsAggregatesCountStar()

Description copied from class: ExecutionFactory

Support indicates connector can accept the COUNT(*) aggregate function

Overrides:

supportsAggregatesCountStar in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

supportsCompareCriteriaEquals

public boolean supportsCompareCriteriaEquals()

Description copied from class: ExecutionFactory

Support indicates connector accepts criteria of form (element = constant)

Overrides:

supportsCompareCriteriaEquals in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

supportsNotCriteria

public boolean supportsNotCriteria()

Description copied from class: ExecutionFactory

Support indicates connector accepts logical criteria NOT

Overrides:

supportsNotCriteria in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

supportsCompareCriteriaOrdered

public boolean supportsCompareCriteriaOrdered()

Description copied from class: ExecutionFactory

Support indicates connector accepts criteria of form (element <=|>= constant)
The query engine will may pushdown queries containing < or > if NOT is also supported.

Overrides:

supportsCompareCriteriaOrdered in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

supportsInCriteria

public boolean supportsInCriteria()

Description copied from class: ExecutionFactory

Support indicates connector accepts criteria of form (element IN set)

Overrides:

supportsInCriteria in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

supportsOnlyLiteralComparison

public boolean supportsOnlyLiteralComparison()

Overrides:

supportsOnlyLiteralComparison in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

Returns:

true if only Literal comparisons (equality, ordered, like, etc.) are supported for non-join conditions.

supportsIsNullCriteria

public boolean supportsIsNullCriteria()

Description copied from class: ExecutionFactory

Support indicates connector accepts criteria of form (element IS NULL)

Overrides:

supportsIsNullCriteria in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

supportsOrCriteria

public boolean supportsOrCriteria()

Description copied from class: ExecutionFactory

Support indicates connector accepts logical criteria connected by OR

Overrides:

supportsOrCriteria in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

supportsBulkUpdate

public boolean supportsBulkUpdate()

Description copied from class: ExecutionFactory

Whether the source supports updates with multiple value sets

Overrides:

supportsBulkUpdate in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

returnsSingleUpdateCount

public boolean returnsSingleUpdateCount()

Description copied from class: ExecutionFactory

True if the only a single value is returned for the update count. This overrides the default expectation of a update count array for bulk/batch commands. It is expected that every command is successful.

Overrides:

returnsSingleUpdateCount in class ExecutionFactory<ConnectionFactory,AccumuloConnection>

Returns: