mondrian.spi.impl

Class NetezzaDialect

java.lang.Object

mondrian.spi.impl.JdbcDialectImpl

mondrian.spi.impl.PostgreSqlDialect

mondrian.spi.impl.NetezzaDialect

All Implemented Interfaces:

Dialect

public class NetezzaDialect
extends PostgreSqlDialect

Implementation of Dialect for the Netezza database.

Since:

April 17, 2009

Author:

swood

Nested Class Summary

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

Dialect.DatabaseProduct, Dialect.Datatype

Field Summary

Fields

Modifier and Type	Field and Description
static JdbcDialectFactory	FACTORY

Fields inherited from class mondrian.spi.impl.JdbcDialectImpl

databaseProduct, permitsSelectNotInGroupBy, productVersion

Constructor Summary

Constructors

Constructor and Description
NetezzaDialect(Connection connection) Creates a NetezzaDialect.

Method Summary

Modifier and Type	Method and Description
boolean	allowsRegularExpressionInWhereClause() Informs Mondrian if the dialect supports regular expressions when creating the 'where' or the 'having' clause.
String	generateRegularExpression(String source, String javaRegex) Must generate a String representing a regular expression match operation between a string literal and a Java regular expression.
Dialect.DatabaseProduct	getDatabaseProduct() Returns the database for this Dialect, or Dialect.DatabaseProduct.UNKNOWN if the database is not a common database.
SqlStatement.Type	getType(ResultSetMetaData metaData, int columnIndex) Chooses the most appropriate type for accessing the values of a column in a result set for a dialect.

Methods inherited from class mondrian.spi.impl.PostgreSqlDialect

generateOrderByNulls, requiresAliasForFromQuery

Methods inherited from class mondrian.spi.impl.JdbcDialectImpl

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

Methods inherited from class java.lang.Object

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

Field Detail

FACTORY

public static final JdbcDialectFactory FACTORY

Constructor Detail

NetezzaDialect

public NetezzaDialect(Connection connection)
               throws SQLException

Creates a NetezzaDialect.

Parameters:

connection - Connection

Throws:

SQLException

Method Detail

getDatabaseProduct

public Dialect.DatabaseProduct getDatabaseProduct()

Description copied from interface: Dialect

Returns the database for this Dialect, or Dialect.DatabaseProduct.UNKNOWN if the database is not a common database.

Specified by:

getDatabaseProduct in interface Dialect

Overrides:

getDatabaseProduct in class PostgreSqlDialect

Returns:

Database

allowsRegularExpressionInWhereClause

public boolean allowsRegularExpressionInWhereClause()

Description copied from interface: Dialect

Informs Mondrian if the dialect supports regular expressions when creating the 'where' or the 'having' clause.

Specified by:

allowsRegularExpressionInWhereClause in interface Dialect

Overrides:

allowsRegularExpressionInWhereClause in class PostgreSqlDialect

Returns:

True if regular expressions are supported.

generateRegularExpression

public String generateRegularExpression(String source,
                                        String javaRegex)

Description copied from interface: Dialect

Must generate a String representing a regular expression match operation between a string literal and a Java regular expression. The string literal might be a column identifier or some other identifier, but the implementation must presume that it is already escaped and fit for use. The regular expression is not escaped and must be adapted to the proper dialect rules.

Postgres / Greenplum example:

generateRegularExpression( "'foodmart'.'customer_name'", "(?i).*oo.*") -> 'foodmart'.'customer_name' ~ "(?i).*oo.*"

Oracle example:

generateRegularExpression( "'foodmart'.'customer_name'", ".*oo.*") -> REGEXP_LIKE('foodmart'.'customer_name', ".*oo.*")

Dialects are allowed to return null if the dialect cannot convert that particular regular expression into something that the database would support.

Specified by:

generateRegularExpression in interface Dialect

Overrides:

generateRegularExpression in class PostgreSqlDialect

Parameters:

source - A String identifying the column to match against.

javaRegex - A Java regular expression to match against.

Returns:

A dialect specific matching operation, or null if the dialect cannot convert that particular regular expression into something that the database would support.

getType

public SqlStatement.Type getType(ResultSetMetaData metaData,
                                 int columnIndex)
                          throws SQLException

Description copied from interface: Dialect

Chooses the most appropriate type for accessing the values of a column in a result set for a dialect.

Dialect-specific nuances involving type representation should be encapsulated in implementing methods. For example, if a dialect has implicit rules involving scale or precision, they should be handled within this method so the client can simply retrieve the "best fit" SqlStatement.Type for the column.

Specified by:

getType in interface Dialect

Overrides:

getType in class PostgreSqlDialect

Parameters:

metaData - Results set metadata

columnIndex - Column ordinal (0-based)

Returns:

the most appropriate SqlStatement.Type for the column

Throws:

SQLException