org.teiid.translator.cassandra

Class CassandraExecutionFactory

java.lang.Object

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

org.teiid.translator.cassandra.CassandraExecutionFactory

@Translator(name="cassandra",
            description="A translator for Cassandra NoSql database")
public class CassandraExecutionFactory
extends ExecutionFactory<ConnectionFactory,CassandraConnection>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CassandraExecutionFactory.Event

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

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

Field Summary

Fields

Modifier and Type	Field and Description
static BundleUtil	UTIL

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
CassandraExecutionFactory()

Method Summary

Modifier and Type	Method and Description
ProcedureExecution	createDirectExecution(List<Argument> arguments, Command command, ExecutionContext executionContext, RuntimeMetadata metadata, CassandraConnection connection)
ProcedureExecution	createProcedureExecution(Call command, ExecutionContext executionContext, RuntimeMetadata metadata, CassandraConnection connection)
ResultSetExecution	createResultSetExecution(QueryExpression command, ExecutionContext executionContext, RuntimeMetadata metadata, CassandraConnection connection)
UpdateExecution	createUpdateExecution(Command command, ExecutionContext executionContext, RuntimeMetadata metadata, CassandraConnection connection)
MetadataProcessor<CassandraConnection>	getMetadataProcessor() Get a MetadataProcessor for the translator to read the metadata.
void	initCapabilities(CassandraConnection connection) Will be called by ExecutionFactory.start() with a null connection if a source connection is not ExecutionFactory.isSourceRequiredForCapabilities()
boolean	isSourceRequiredForCapabilities() If true, the ExecutionFactory.initCapabilities(Object) method will be consulted prior to determining the capabilities
boolean	returnsSingleUpdateCount() True if the only a single value is returned for the update count.
void	start() Initialize the connector with supplied configuration
boolean	supportsAggregatesAvg() Support indicates connector can accept the AVG aggregate function
boolean	supportsAggregatesCountStar() Support indicates connector can accept the COUNT(*) aggregate function
boolean	supportsAggregatesMax() Support indicates connector can accept the MAX aggregate function
boolean	supportsAggregatesMin() Support indicates connector can accept the MIN aggregate function
boolean	supportsAggregatesSum() Support indicates connector can accept the SUM aggregate function
boolean	supportsBatchedUpdates() Whether the source supports BatchedUpdates
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	supportsOrderBy() Support indicates connector accepts ORDER BY clause, including multiple elements and ascending and descending sorts.
boolean	supportsRowLimit() Gets whether the connector can limit the number of rows returned by a query.

Methods inherited from class org.teiid.translator.ExecutionFactory

addPushDownFunction, areLobsUsableAfterClose, closeConnection, createExecution, getCacheDirective, getCollationLocale, getConnection, getConnection, getDefaultNullOrder, getDirectQueryProcedureName, getExcludedCommonTableExpressionName, getInstance, getLanguageFactory, getMaxDependentInPredicates, getMaxFromGroups, getMaxInCriteriaSize, getMaxProjectedColumns, getMetadata, getNativeQueryProcedureName, getPushDownFunctions, getRequiredLikeEscape, getSupportedFunctions, getSupportedJoinCriteria, getTransactionSupport, getTypeFacility, isCopyLobs, isForkable, isImmutable, isSourceRequired, 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, supportsAggregatesCount, supportsAggregatesCountBig, supportsAggregatesDistinct, supportsAggregatesEnhancedNumeric, supportsAliasedTable, supportsArrayAgg, supportsArrayType, 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, supportsIsNullCriteria, supportsLateralJoin, supportsLateralJoinCondition, supportsLikeCriteria, supportsLikeCriteriaEscapeCharacter, supportsLikeRegex, supportsListAgg, supportsMultipleOpenExecutions, supportsNativeQueries, supportsNotCriteria, supportsOnlyCorrelatedSubqueries, supportsOnlyFormatLiterals, supportsOnlyLateralJoinProcedure, supportsOnlyLiteralComparison, supportsOnlySingleTableGroupBy, supportsOnlyTimestampAddLiteral, supportsOrCriteria, supportsOrderByNullOrdering, supportsOrderByUnrelated, supportsOrderByWithExtendedGrouping, supportsOuterJoins, supportsPartialFiltering, supportsProcedureTable, supportsQuantifiedCompareCriteriaAll, supportsQuantifiedCompareCriteriaSome, supportsRecursiveCommonTableExpressions, 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

Field Detail

UTIL

public static final BundleUtil UTIL

Constructor Detail

CassandraExecutionFactory

public CassandraExecutionFactory()

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,CassandraConnection>

Throws:

TranslatorException

createResultSetExecution

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

Overrides:

createResultSetExecution in class ExecutionFactory<ConnectionFactory,CassandraConnection>

Throws:

TranslatorException

createUpdateExecution

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

Overrides:

createUpdateExecution in class ExecutionFactory<ConnectionFactory,CassandraConnection>

Throws:

TranslatorException

createProcedureExecution

public ProcedureExecution createProcedureExecution(Call command,
                                                   ExecutionContext executionContext,
                                                   RuntimeMetadata metadata,
                                                   CassandraConnection connection)
                                            throws TranslatorException

Overrides:

createProcedureExecution in class ExecutionFactory<ConnectionFactory,CassandraConnection>

Throws:

TranslatorException

createDirectExecution

public ProcedureExecution createDirectExecution(List<Argument> arguments,
                                                Command command,
                                                ExecutionContext executionContext,
                                                RuntimeMetadata metadata,
                                                CassandraConnection connection)
                                         throws TranslatorException

Overrides:

createDirectExecution in class ExecutionFactory<ConnectionFactory,CassandraConnection>

Throws:

TranslatorException

getMetadataProcessor

public MetadataProcessor<CassandraConnection> 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,CassandraConnection>

Returns:

supportsOrderBy

public boolean supportsOrderBy()

Description copied from class: ExecutionFactory

Support indicates connector accepts ORDER BY clause, including multiple elements and ascending and descending sorts.

Overrides:

supportsOrderBy in class ExecutionFactory<ConnectionFactory,CassandraConnection>

supportsAggregatesCountStar

public boolean supportsAggregatesCountStar()

Description copied from class: ExecutionFactory

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

Overrides:

supportsAggregatesCountStar in class ExecutionFactory<ConnectionFactory,CassandraConnection>

supportsCompareCriteriaEquals

public boolean supportsCompareCriteriaEquals()

Description copied from class: ExecutionFactory

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

Overrides:

supportsCompareCriteriaEquals in class ExecutionFactory<ConnectionFactory,CassandraConnection>

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,CassandraConnection>

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,CassandraConnection>

supportsRowLimit

public boolean supportsRowLimit()

Description copied from class: ExecutionFactory

Gets whether the connector can limit the number of rows returned by a query.

Overrides:

supportsRowLimit in class ExecutionFactory<ConnectionFactory,CassandraConnection>

supportsBulkUpdate

public boolean supportsBulkUpdate()

Description copied from class: ExecutionFactory

Whether the source supports updates with multiple value sets

Overrides:

supportsBulkUpdate in class ExecutionFactory<ConnectionFactory,CassandraConnection>

supportsBatchedUpdates

public boolean supportsBatchedUpdates()

Description copied from class: ExecutionFactory

Whether the source supports BatchedUpdates

Overrides:

supportsBatchedUpdates in class ExecutionFactory<ConnectionFactory,CassandraConnection>

supportsAggregatesSum

public boolean supportsAggregatesSum()

Description copied from class: ExecutionFactory

Support indicates connector can accept the SUM aggregate function

Overrides:

supportsAggregatesSum in class ExecutionFactory<ConnectionFactory,CassandraConnection>

supportsAggregatesAvg

public boolean supportsAggregatesAvg()

Description copied from class: ExecutionFactory

Support indicates connector can accept the AVG aggregate function

Overrides:

supportsAggregatesAvg in class ExecutionFactory<ConnectionFactory,CassandraConnection>

supportsAggregatesMin

public boolean supportsAggregatesMin()

Description copied from class: ExecutionFactory

Support indicates connector can accept the MIN aggregate function

Overrides:

supportsAggregatesMin in class ExecutionFactory<ConnectionFactory,CassandraConnection>

supportsAggregatesMax

public boolean supportsAggregatesMax()

Description copied from class: ExecutionFactory

Support indicates connector can accept the MAX aggregate function

Overrides:

supportsAggregatesMax in class ExecutionFactory<ConnectionFactory,CassandraConnection>

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,CassandraConnection>

Returns:

initCapabilities

public void initCapabilities(CassandraConnection connection)
                      throws TranslatorException

Description copied from class: ExecutionFactory

Will be called by ExecutionFactory.start() with a null connection if a source connection is not ExecutionFactory.isSourceRequiredForCapabilities()

Overrides:

initCapabilities in class ExecutionFactory<ConnectionFactory,CassandraConnection>

Throws:

TranslatorException

isSourceRequiredForCapabilities

public boolean isSourceRequiredForCapabilities()

Description copied from class: ExecutionFactory

If true, the ExecutionFactory.initCapabilities(Object) method will be consulted prior to determining the capabilities

Overrides:

isSourceRequiredForCapabilities in class ExecutionFactory<ConnectionFactory,CassandraConnection>

Returns: