public interface RowId
The representation (mapping) in the Java programming language of an SQL ROWID value. An SQL ROWID is a built-in type, a value of which can be thought of as an address for its identified row in a database table. Whether that address is logical or, in any respects, physical is determined by its originating data source.
Methods in the interfaces
PreparedStatement, such as
setRowId allow a programmer to access a SQL
ROWID value. The
RowId interface provides a method for representing the value of the
ROWID as a byte array or as a
getRowIdLifetime in the interface
DatabaseMetaData, can be used to determine if a
RowId object remains valid for the duration of the transaction in which the
RowId was created, the duration of the session in which the
RowId was created, or, effectively, for as long as its identified row is not deleted. In addition to specifying the duration of its valid lifetime outside its originating data source,
getRowIdLifetime specifies the duration of a
ROWID value's valid lifetime within its originating data source. In this, it differs from a large object, because there is no limit on the valid lifetime of a large object within its originating data source.
All methods on the
RowId interface must be fully implemented if the JDBC driver supports the data type.
boolean equals(Object obj)
RowId to the specified object. The result is
true if and only if the argument is not null and is a RowId object that represents the same ROWID as this object.
It is important to consider both the origin and the valid lifetime of a
RowId when comparing it to another
RowId. If both are valid, and both are from the same table on the same data source, then if they are equal they identify the same row; if one or more is no longer guaranteed to be valid, or if they originate from different data sources, or different tables on the same data source, they may be equal but still not identify the same row.
Objectto compare this
RowIds are equal; false otherwise
Returns an array of bytes representing the value of the SQL
ROWID designated by this
Returns a String representing the value of the SQL ROWID designated by this
java.sql.Date.toString() returns the contents of its DATE as the
String "2004-03-17" rather than as DATE literal in SQL (which would have been the
String DATE "2004-03-17"), toString() returns the contents of its ROWID in a form specific to the driver supplying the connection, and possibly not as a
ROWIDdesignated by this
Returns a hash code value of this
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