it.unibz.inf.ontop.dbschema.impl

Class SQLStandardQuotedIDFactory

java.lang.Object

it.unibz.inf.ontop.dbschema.impl.SQLStandardQuotedIDFactory

All Implemented Interfaces:

QuotedIDFactory

Direct Known Subclasses:

RawQuotedIDFactory

public class SQLStandardQuotedIDFactory
extends Object
implements QuotedIDFactory

Creates QuotedIdentifiers following the rules of SQL standard:
- unquoted identifiers are converted into upper case
- quoted identifiers are preserved H2 -- http://h2database.com/html/grammar.html Names are not case sensitive (but it appears that the upper-case is the canonical form). Quoted names are case sensitive, and can contain spaces. Two double quotes can be used to create a single double quote inside an identifier. HSQLDB http://www.hsqldb.org/doc/1.8/src/org/hsqldb/jdbc/jdbcDatabaseMetaData.html HSQLDB treats unquoted identifiers as case insensitive in SQL but stores them in upper case; it treats quoted identifiers as case sensitive and stores them verbatim. All jdbcDatabaseMetaData methods perform case-sensitive comparison between name (pattern) arguments and the corresponding identifier values as they are stored in the database. HSQLDB uses the standard SQL identifier quote character (the double quote character); getIdentifierQuoteString() always returns ".

Author:

Roman Kontchakov

Field Summary

Fields

Modifier and Type	Field and Description
static String	NO_QUOTATION
static String	QUOTATION_STRING

Constructor Summary

Constructors

Constructor and Description
SQLStandardQuotedIDFactory()

Method Summary

Modifier and Type	Method and Description
QuotedID	createAttributeID(String s) Creates a new attribute ID from a string.
protected QuotedID	createFromString(String s)
RelationID	createRelationID(String... components) Creates a new relation ID from the component strings.
RelationID	createRelationID(String tableId)
String	getIDQuotationString()

Methods inherited from class java.lang.Object

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

Field Detail

QUOTATION_STRING

public static final String QUOTATION_STRING

See Also:

Constant Field Values

NO_QUOTATION

public static final String NO_QUOTATION

See Also:

Constant Field Values

Constructor Detail

SQLStandardQuotedIDFactory

public SQLStandardQuotedIDFactory()

Method Detail

createAttributeID

public QuotedID createAttributeID(@Nonnull
                                  String s)

Description copied from interface: QuotedIDFactory

Creates a new attribute ID from a string.

Specified by:

createAttributeID in interface QuotedIDFactory

Parameters:

s - possibly quoted attribute ID (SQL rendering)

Returns:

attribute ID

createRelationID

public RelationID createRelationID(@Nonnull
                                   String tableId)

Specified by:

createRelationID in interface QuotedIDFactory

createRelationID

public RelationID createRelationID(String... components)

Description copied from interface: QuotedIDFactory

Creates a new relation ID from the component strings.

Specified by:

createRelationID in interface QuotedIDFactory

Parameters:

components - list of the possibly quoted components of relation ID, from the catalog to the table name

Returns:

relation ID

createFromString

protected QuotedID createFromString(@Nonnull
                                    String s)

getIDQuotationString

public String getIDQuotationString()

Specified by:

getIDQuotationString in interface QuotedIDFactory

Returns:

quotation string used in the SQL rendering