org.teiid.translator.cassandra

Class CassandraExecutionFactory

java.lang.Object

org.teiid.translator.ExecutionFactory<javax.resource.cci.ConnectionFactory,CassandraConnection>

org.teiid.translator.cassandra.CassandraExecutionFactory

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

Nested Class Summary

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

ExecutionFactory.Format, ExecutionFactory.NullOrder, ExecutionFactory.SupportedJoinCriteria

Field Summary

Fields

Modifier and Type	Field and Description
static org.teiid.core.BundleUtil	UTIL

Fields inherited from class org.teiid.translator.ExecutionFactory

DEFAULT_MAX_FROM_GROUPS, DEFAULT_MAX_IN_CRITERIA_SIZE

Constructor Summary

Constructors

Constructor and Description
CassandraExecutionFactory()

Method Summary

Methods

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)
void	getMetadata(MetadataFactory metadataFactory, CassandraConnection conn) Implement to provide metadata to the metadata for use by the engine.
void	start() Initialize the connector with supplied configuration
boolean	supportsAggregatesCountStar() Support indicates connector can accept the COUNT(*) aggregate function
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, getConnection, getConnection, getDefaultNullOrder, getDirectQueryProcedureName, getInstance, getLanguageFactory, getMaxDependentInPredicates, getMaxFromGroups, getMaxInCriteriaSize, getNativeQueryProcedureName, getPushDownFunctions, getSupportedFunctions, getSupportedJoinCriteria, getTypeFacility, initCapabilities, isCopyLobs, isForkable, isImmutable, isSourceRequired, isSourceRequiredForCapabilities, isSourceRequiredForMetadata, isThreadBound, requiresCriteria, setCopyLobs, setDirectQueryProcedureName, setImmutable, setMaxDependentInPredicates, setMaxInCriteriaSize, setNativeQueryProcedureName, setRequiresCriteria, setSourceRequired, setSourceRequiredForMetadata, setSupportedJoinCriteria, setSupportsDirectQueryProcedure, setSupportsFullOuterJoins, setSupportsInnerJoins, setSupportsNativeQueries, setSupportsOrderBy, setSupportsOuterJoins, setSupportsSelectDistinct, setThreadBound, supportsAdvancedOlapOperations, supportsAggregatesAvg, supportsAggregatesCount, supportsAggregatesDistinct, supportsAggregatesEnhancedNumeric, supportsAggregatesMax, supportsAggregatesMin, supportsAggregatesSum, supportsAliasedTable, supportsArrayAgg, supportsArrayType, supportsBatchedUpdates, supportsBulkUpdate, supportsCommonTableExpressions, supportsConvert, supportsCorrelatedSubqueries, supportsDependentJoins, supportsDirectQueryProcedure, supportsElementaryOlapOperations, supportsExcept, supportsExistsCriteria, supportsFormatLiteral, supportsFullDependentJoins, supportsFullOuterJoins, supportsFunctionsInGroupBy, supportsGroupBy, supportsGroupByRollup, supportsHaving, supportsInCriteriaSubquery, supportsInlineViews, supportsInnerJoins, supportsInsertWithQueryExpression, supportsIntersect, supportsIsNullCriteria, supportsLikeCriteria, supportsLikeCriteriaEscapeCharacter, supportsLikeRegex, supportsNativeQueries, supportsNotCriteria, supportsOnlyCorrelatedSubqueries, supportsOnlyFormatLiterals, supportsOnlyLiteralComparison, supportsOnlySingleTableGroupBy, supportsOrCriteria, supportsOrderByNullOrdering, supportsOrderByUnrelated, supportsOrderByWithExtendedGrouping, supportsOuterJoins, supportsQuantifiedCompareCriteriaAll, supportsQuantifiedCompareCriteriaSome, supportsRowOffset, supportsScalarSubqueries, supportsSearchedCaseExpressions, supportsSelectDistinct, supportsSelectExpression, supportsSelectWithoutFrom, supportsSelfJoins, supportsSetQueryOrderBy, supportsSimilarTo, supportsStringAgg, supportsSubqueryInOn, supportsUnions, supportsWindowDistinctAggregates, supportsWindowOrderByWithAggregates, useAnsiJoin

Methods inherited from class java.lang.Object

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

Field Detail

UTIL

public static final org.teiid.core.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<javax.resource.cci.ConnectionFactory,CassandraConnection>

Throws:

TranslatorException

createResultSetExecution

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

Overrides:

createResultSetExecution in class ExecutionFactory<javax.resource.cci.ConnectionFactory,CassandraConnection>

Throws:

TranslatorException

createUpdateExecution

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

Overrides:

createUpdateExecution in class ExecutionFactory<javax.resource.cci.ConnectionFactory,CassandraConnection>

Throws:

TranslatorException

createProcedureExecution

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

Overrides:

createProcedureExecution in class ExecutionFactory<javax.resource.cci.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<javax.resource.cci.ConnectionFactory,CassandraConnection>

Throws:

TranslatorException

getMetadata

public void getMetadata(MetadataFactory metadataFactory,
               CassandraConnection conn)
                 throws TranslatorException

Description copied from class: ExecutionFactory

Implement to provide metadata to the metadata for use by the engine. This is the primary method of creating metadata for dynamic VDBs.

Overrides:

getMetadata in class ExecutionFactory<javax.resource.cci.ConnectionFactory,CassandraConnection>

conn - may be null if the source is not required

Throws:

TranslatorException - to indicate a recoverable error, otherwise a RuntimeException

See Also:

ExecutionFactory.isSourceRequiredForMetadata()

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<javax.resource.cci.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<javax.resource.cci.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<javax.resource.cci.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<javax.resource.cci.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<javax.resource.cci.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<javax.resource.cci.ConnectionFactory,CassandraConnection>