org.d2rq.db.types
Class SQLDate
java.lang.Object
org.d2rq.db.types.DataType
org.d2rq.db.types.SQLDate
- Direct Known Subclasses:
- MySQL.MySQLCompatibilityDateDataType
public class SQLDate
- extends DataType
Fields inherited from class org.d2rq.db.types.DataType |
log |
Method Summary |
boolean |
isIRISafe()
|
String |
rdfType()
Return the URI of an appropriate RDF datatype for a SQL data type. |
String |
toSQLLiteral(String value,
Vendor vendor)
Creates a SQL literal for the given value, suitable
for comparison to a column of this indicated type. |
String |
value(ResultSet resultSet,
int column)
Retrieves a string value in preferred format (canonical form
of the closest XSD type) from a SQL ResultSet. |
SQLDate
public SQLDate(String name)
isIRISafe
public boolean isIRISafe()
- Overrides:
isIRISafe
in class DataType
rdfType
public String rdfType()
- Description copied from class:
DataType
- Return the URI of an appropriate RDF datatype for a SQL data type.
null
indicates a known SQL type that cannot be mapped to RDF.
- Overrides:
rdfType
in class DataType
- Returns:
- RDF datatype URI:
http://www.w3.org/2001/XMLSchema#string
etc.
value
public String value(ResultSet resultSet,
int column)
throws SQLException
- Description copied from class:
DataType
- Retrieves a string value in preferred format (canonical form
of the closest XSD type) from a SQL ResultSet.
- Overrides:
value
in class DataType
- Parameters:
resultSet
- Result of a SELECT querycolumn
- The column index to retrieve; leftmost columns is 1
- Returns:
- String representation, or
null
if SQL result was null or is not representable in the XSD type
- Throws:
SQLException
toSQLLiteral
public String toSQLLiteral(String value,
Vendor vendor)
- Description copied from class:
DataType
- Creates a SQL literal for the given value, suitable
for comparison to a column of this indicated type.
If the value is not suitable for the column type
(e.g., not a number for a SQLExactNumeric),
NULL
is returned.
- Overrides:
toSQLLiteral
in class DataType
- Parameters:
value
- A valuevendor
- A vendor instance responsible for quoting/escaping
- Returns:
- A quoted and escaped SQL literal, suitable for comparison to a column