Quadcap Embeddable Database

com.quadcap.sql.meta.MetaBestRowId Class Reference

Inheritance diagram for com.quadcap.sql.meta.MetaBestRowId:

List of all members.

---

Detailed Description

A Cursor supporting the DatabaseMetaData.getBestRowId() operation.

Author:

Stan Bailes

Definition at line 75 of file MetaBestRowId.java.

Public Member Functions
	MetaBestRowId (Session session, String tableName, int scope, boolean nullable) throws SQLException
	The constructor for this meta cursor finds the "best" index to use for this table, purely based on the index type (and possibly the 'nullable' flag).
int[]	getSortColumns ()
	Sort by name, I guess...
boolean	checkNullable (Constraint c) throws SQLException
	Do any of the columns in this constraint allow nulls?
Package Functions
Row	doColumn (Column col) throws SQLException
	Add one cursor row to describe the specified column.
Static Package Attributes
Column[]	cols
int[]	sortColumns = { 2 }

---

Constructor & Destructor Documentation

com.quadcap.sql.meta.MetaBestRowId.MetaBestRowId (  Session  session, String  tableName, int  scope, boolean  nullable )  throws SQLException

The constructor for this meta cursor finds the "best" index to use for this table, purely based on the index type (and possibly the 'nullable' flag). We don't do anything with scope -- best is best for us. Definition at line 95 of file MetaBestRowId.java. References com.quadcap.sql.meta.MetaBestRowId.checkNullable(), com.quadcap.sql.meta.MetaBestRowId.cols, com.quadcap.sql.meta.MetaBestRowId.doColumn(), com.quadcap.sql.Constraint.getColumn(), com.quadcap.sql.Constraint.getColumnCount(), com.quadcap.sql.Table.getConstraint(), com.quadcap.sql.Session.getDatabase(), com.quadcap.sql.Table.getNumConstraints(), com.quadcap.sql.Database.getRelation(), com.quadcap.sql.Session.getTableWriteLock(), and com.quadcap.sql.StaticCursor.sort().

---

Member Function Documentation

boolean com.quadcap.sql.meta.MetaBestRowId.checkNullable (  Constraint  c  )  throws SQLException

Do any of the columns in this constraint allow nulls? Definition at line 147 of file MetaBestRowId.java. References com.quadcap.sql.meta.MetaBestRowId.checkNullable(). Referenced by com.quadcap.sql.meta.MetaBestRowId.checkNullable(), and com.quadcap.sql.meta.MetaBestRowId.MetaBestRowId().

Row com.quadcap.sql.meta.MetaBestRowId.doColumn (  Column  col  )  throws SQLException [package]

Add one cursor row to describe the specified column. Definition at line 159 of file MetaBestRowId.java. References com.quadcap.sql.meta.MetaBestRowId.doColumn(), com.quadcap.sql.types.Type.getJDBCType(), com.quadcap.sql.types.Type.getPrecision(), com.quadcap.sql.types.Type.getScale(), com.quadcap.sql.types.Type.getTypeName(), and com.quadcap.sql.Row.set(). Referenced by com.quadcap.sql.meta.MetaBestRowId.doColumn(), and com.quadcap.sql.meta.MetaBestRowId.MetaBestRowId().

int [] com.quadcap.sql.meta.MetaBestRowId.getSortColumns (   )

Sort by name, I guess... Reimplemented from com.quadcap.sql.StaticCursor. Definition at line 140 of file MetaBestRowId.java. References com.quadcap.sql.meta.MetaBestRowId.sortColumns.

---

Member Data Documentation

Column [] com.quadcap.sql.meta.MetaBestRowId.cols [static, package]

Initial value: { new Column("SCOPE", typeShort), new Column("COLUMN_NAME", typeString), new Column("DATA_TYPE", typeShort), new Column("TYPE_NAME", typeString), new Column("COLUMN_SIZE", typeInt), new Column("BUFFER_LENGTH", typeAny), new Column("DECIMAL_DIGITS", typeInt), new Column("PSEUDO_COLUMN", typeShort) } Definition at line 76 of file MetaBestRowId.java. Referenced by com.quadcap.sql.meta.MetaBestRowId.MetaBestRowId().

int [] com.quadcap.sql.meta.MetaBestRowId.sortColumns = { 2 } [static, package]

Definition at line 87 of file MetaBestRowId.java. Referenced by com.quadcap.sql.meta.MetaBestRowId.getSortColumns().