LoopbackCapabilities (Teiid 6.2.0 API)

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com.metamatrix.connector.loopback
Class LoopbackCapabilities

java.lang.Object
  org.teiid.connector.basic.BasicConnectorCapabilities
      com.metamatrix.connector.loopback.LoopbackCapabilities

All Implemented Interfaces:: ConnectorCapabilities

public class LoopbackCapabilities
extends BasicConnectorCapabilities
extends BasicConnectorCapabilities

Specifies the capabilities of this connector. Since we want this connector to be able to emulate most other connectors, these capabilities support everything.

Nested Class Summary

Nested classes/interfaces inherited from interface org.teiid.connector.api.ConnectorCapabilities
`ConnectorCapabilities.SupportedJoinCriteria`

Constructor Summary
`LoopbackCapabilities()` Construct the capabilities class

Method Summary
`java.util.List`	`getSupportedFunctions()` Return null to indicate no functions are supported.
`boolean`	`supportsAggregatesAvg()` Support indicates connector can accept the AVG aggregate function
`boolean`	`supportsAggregatesCount()` Support indicates connector can accept the COUNT aggregate function
`boolean`	`supportsAggregatesCountStar()` Support indicates connector can accept the COUNT(*) aggregate function
`boolean`	`supportsAggregatesDistinct()` Support indicates connector can accept DISTINCT within aggregate functions
`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`	`supportsAliasedGroup()` Support indicates connector can accept groups with aliases
`boolean`	`supportsBetweenCriteria()` Support indicates connector accepts criteria of form (element BETWEEN constant AND constant) NOT CURRENTLY USED - between is rewritten as compound compare criteria
`boolean`	`supportsCaseExpressions()` Support indicates connector can accept queries with non-searched CASE WHEN ...
`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`	`supportsCorrelatedSubqueries()` Support indicates connector can accept correlated subqueries wherever subqueries are accepted
`boolean`	`supportsExcept()` Support indicates that the connector supports the EXCEPT of two queries.
`boolean`	`supportsExistsCriteria()` Support indicates connector accepts the EXISTS criteria
`boolean`	`supportsFullOuterJoins()` Support indicates connector can accept full outer joins
`boolean`	`supportsGroupBy()` Whether the source supports an explicit GROUP BY clause
`boolean`	`supportsHaving()` Whether the source supports the HAVING clause
`boolean`	`supportsInCriteria()` Support indicates connector accepts criteria of form (element IN set)
`boolean`	`supportsInCriteriaSubquery()` Support indicates connector accepts IN criteria with a subquery on the right side
`boolean`	`supportsInlineViews()` Support indicates connector can accept inline views (subqueries in the FROM clause).
`boolean`	`supportsInnerJoins()` Support indicates connector can accept inner or cross joins
`boolean`	`supportsIntersect()` Support indicates that the connector supports the INTERSECT of two queries.
`boolean`	`supportsIsNullCriteria()` Support indicates connector accepts criteria of form (element IS NULL)
`boolean`	`supportsLikeCriteria()` Support indicates connector accepts criteria of form (element LIKE constant)
`boolean`	`supportsLikeCriteriaEscapeCharacter()` Support indicates connector accepts criteria of form (element LIKE constant ESCAPE char)
`boolean`	`supportsNotCriteria()` Support indicates connector accepts logical criteria NOT
`boolean`	`supportsOrCriteria()` Support indicates connector accepts logical criteria connected by OR
`boolean`	`supportsOrderBy()` Support indicates connector accepts ORDER BY clause, including multiple elements and ascending and descending sorts.
`boolean`	`supportsOuterJoins()` Support indicates connector can accept left outer joins
`boolean`	`supportsQuantifiedCompareCriteriaAll()` Support indicates connector accepts the quantified comparison criteria that use ALL
`boolean`	`supportsQuantifiedCompareCriteriaSome()` Support indicates connector accepts the quantified comparison criteria that use SOME
`boolean`	`supportsRowLimit()` Gets whether the connector can limit the number of rows returned by a query.
`boolean`	`supportsScalarSubqueries()` Support indicates connector can accept scalar subqueries in the SELECT, WHERE, and HAVING clauses
`boolean`	`supportsSearchedCaseExpressions()` Support indicates connector can accept queries with searched CASE WHEN ...
`boolean`	`supportsSelectDistinct()` Support indicates connector can accept queries with SELECT DISTINCT
`boolean`	`supportsSelectExpression()` Support indicates connector can accept expressions other than element symbols in the SELECT clause.
`boolean`	`supportsSelfJoins()` Support indicates connector can accept self-joins where a group is joined to itself with aliases.
`boolean`	`supportsSetQueryOrderBy()` Support indicates that the connector supports an ORDER BY on a SetQuery.
`boolean`	`supportsUnions()` Support indicates that the connector supports the UNION of two queries.

Methods inherited from class org.teiid.connector.basic.BasicConnectorCapabilities
`getMaxFromGroups, getMaxInCriteriaSize, getSupportedJoinCriteria, requiresCriteria, supportsBatchedUpdates, supportsBulkUpdate, supportsFunctionsInGroupBy, supportsInsertWithQueryExpression, supportsOrderByUnrelated, supportsRowOffset, useAnsiJoin`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

LoopbackCapabilities

public LoopbackCapabilities()

Construct the capabilities class

Method Detail

getSupportedFunctions

public java.util.List getSupportedFunctions()

Description copied from class: BasicConnectorCapabilities

Return null to indicate no functions are supported.

Specified by:: getSupportedFunctions in interface ConnectorCapabilities
Overrides:: getSupportedFunctions in class BasicConnectorCapabilities

Returns:: null
See Also:: ConnectorCapabilities.getSupportedFunctions()