Package mondrian.spi.impl

Class NeoviewDialect

java.lang.Object

mondrian.spi.impl.JdbcDialectImpl

mondrian.spi.impl.NeoviewDialect

All Implemented Interfaces:

Dialect

public class NeoviewDialect
extends JdbcDialectImpl

Implementation of Dialect for the Neoview database.

Since:

Dec 4, 2009

Author:

jhyde

Nested Class Summary

Nested classes/interfaces inherited from interface mondrian.spi.Dialect

Dialect.DatabaseProduct, Dialect.Datatype

Field Summary

Fields

Modifier and Type	Field	Description
static final JdbcDialectFactory	FACTORY

Fields inherited from class mondrian.spi.impl.JdbcDialectImpl

databaseProduct, permitsSelectNotInGroupBy, productVersion

Constructor Summary

Constructors

Constructor	Description
NeoviewDialect(Connection connection)	Creates a NeoviewDialect.

Method Summary

Modifier and Type	Method	Description
boolean	_supportsOrderByNullsLast()
boolean	allowsDdl()	Returns whether this dialect supports common SQL Data Definition Language (DDL) statements such as CREATE TABLE and DROP INDEX.
String	generateInline(List<String> columnNames, List<String> columnTypes, List<String[]> valueList)	Generates a SQL statement to represent an inline dataset.
boolean	requiresAliasForFromQuery()	Returns whether this Dialect requires subqueries in the FROM clause to have an alias.
boolean	requiresOrderByAlias()	Returns true if this Dialect can include expressions in the ORDER BY clause only by adding an expression to the SELECT clause and using its alias.
boolean	supportsGroupByExpressions()	Returns whether this Dialect supports expressions in the GROUP BY clause.

Methods inherited from class mondrian.spi.impl.JdbcDialectImpl

allowsAs, allowsCompoundCountDistinct, allowsCountDistinct, allowsCountDistinctWithOtherAggs, allowsDialectSharing, allowsFromQuery, allowsJoinOn, allowsMultipleCountDistinct, allowsMultipleDistinctSqlMeasures, allowsOrderByAlias, allowsRegularExpressionInWhereClause, allowsSelectNotInGroupBy, appendHintsAfterFromClause, caseWhenElse, computeStatisticsProviders, deduceIdentifierQuoteString, deduceMaxColumnNameLength, deduceProductName, deduceProductVersion, deduceReadOnly, deduceSupportedResultSetStyles, deduceSupportsSelectNotInGroupBy, extractEmbeddedFlags, generateCountExpression, generateInlineForAnsi, generateInlineGeneric, generateOrderByNulls, generateOrderByNullsAnsi, generateOrderItem, generateRegularExpression, getDatabaseProduct, getMaxColumnNameLength, getProduct, getQuoteIdentifierString, getStatisticsProviders, getType, isDatabase, needsExponent, quote, quoteBooleanLiteral, quoteDateLiteral, quoteDateLiteral, quoteIdentifier, quoteIdentifier, quoteIdentifier, quoteIdentifier, quoteNumericLiteral, quoteStringLiteral, quoteTimeLiteral, quoteTimestampLiteral, quoteTimestampLiteral, requiresGroupByAlias, requiresHavingAlias, requiresUnionOrderByExprToBeInSelectClause, requiresUnionOrderByOrdinal, supportsGroupingSets, supportsMultiValueInExpr, supportsResultSetConcurrency, supportsUnlimitedValueList, toString, toUpper

Methods inherited from class java.lang.Object

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

Field Details

FACTORY

public static final JdbcDialectFactory FACTORY

Constructor Details

NeoviewDialect

public NeoviewDialect(Connection connection)
               throws SQLException

Creates a NeoviewDialect.

Parameters:

connection - Connection

Throws:

SQLException

Method Details

_supportsOrderByNullsLast

public boolean _supportsOrderByNullsLast()

requiresOrderByAlias

public boolean requiresOrderByAlias()

Description copied from interface: Dialect

Returns true if this Dialect can include expressions in the ORDER BY clause only by adding an expression to the SELECT clause and using its alias.

For example, in such a dialect,

SELECT x FROM t ORDER BY x + y

would be illegal, but

SELECT x, x + y AS z FROM t ORDER BY z

would be legal.

MySQL, DB2 and Ingres are examples of such dialects.

Specified by:

requiresOrderByAlias in interface Dialect

Overrides:

requiresOrderByAlias in class JdbcDialectImpl

Returns:

Whether this Dialect can include expressions in the ORDER BY clause only by adding an expression to the SELECT clause and using its alias

requiresAliasForFromQuery

public boolean requiresAliasForFromQuery()

Description copied from interface: Dialect

Returns whether this Dialect requires subqueries in the FROM clause to have an alias.

Specified by:

requiresAliasForFromQuery in interface Dialect

Overrides:

requiresAliasForFromQuery in class JdbcDialectImpl

Returns:

whether dialewct requires subqueries to have an alias

See Also:

• Dialect.allowsFromQuery()

allowsDdl

public boolean allowsDdl()

Description copied from interface: Dialect

Returns whether this dialect supports common SQL Data Definition Language (DDL) statements such as CREATE TABLE and DROP INDEX.

Access seems to allow DDL iff the .mdb file is writeable.

Specified by:

allowsDdl in interface Dialect

Overrides:

allowsDdl in class JdbcDialectImpl

Returns:

whether this Dialect supports DDL

See Also:

• DatabaseMetaData.isReadOnly()

supportsGroupByExpressions

public boolean supportsGroupByExpressions()

Description copied from interface: Dialect

Returns whether this Dialect supports expressions in the GROUP BY clause. Derby/Cloudscape and Infobright do not.

Specified by:

supportsGroupByExpressions in interface Dialect

Overrides:

supportsGroupByExpressions in class JdbcDialectImpl

Returns:

Whether this Dialect allows expressions in the GROUP BY clause

generateInline

public String generateInline(List<String> columnNames,
 List<String> columnTypes,
 List<String[]> valueList)

Description copied from interface: Dialect

Generates a SQL statement to represent an inline dataset.

For example, for Oracle, generates

 SELECT 1 AS FOO, 'a' AS BAR FROM dual
 UNION ALL
 SELECT 2 AS FOO, 'b' AS BAR FROM dual
 

For ANSI SQL, generates:

 VALUES (1, 'a'), (2, 'b')
 

Specified by:

generateInline in interface Dialect

Overrides:

generateInline in class JdbcDialectImpl

Parameters:

columnNames - List of column names

columnTypes - List of column types ("String" or "Numeric")

valueList - List of rows values

Returns:

SQL string