com.novell.nds.dirxml.driver.jdbc.db.lock
Class DBLockGenerator

java.lang.Object
  com.novell.nds.dirxml.driver.jdbc.db.lock.DBLockGenerator

All Implemented Interfaces:

DBLockStatementGenerator

Direct Known Subclasses:

OraLockGenerator

public class DBLockGenerator

extends Object

implements DBLockStatementGenerator

Default implementation of interface DBLockStatementGenerator.

See Also:

DBLockStatementGenerator

Field Summary

Fields inherited from interface com.novell.nds.dirxml.driver.jdbc.db.lock.DBLockStatementGenerator

EMPTY_LOCK, TYPE_TABLE, TYPE_VIEW

Constructor Summary

DBLockGenerator()

Method Summary

void	addListedColumn(String columnName) Method for caller to supply columns that are listed as part of a pending SELECT, INSERT or UPDATE statement.
void	addPrimaryKeyColumn(String columnName) Method for caller to supply table primary key info for the table referenced in the pending SQL statement.
void	addWhereColumn(String columnName) Method for caller to supply columns that are listed as part of the WHERE clause for a pending SELECT, UPDATE, or DELETE statement.
DBLock	generateDeleteLock() Method for caller to request the appropriate database lock for a pending DELETE statement.
DBLock	generateInsertLock() Method for caller to request the appropriate database lock for a pending INSERT statement.
DBLock	generateSelectLock() Method for caller to request the appropriate database lock for a pending SELECT statement.
DBLock	generateUpdateLock() Method for caller to request the appropriate database lock for a pending UPDATE statement.
void	reset() Method for caller to reset the state of this generator for use with another pending SQL statement.
void	setTable(String tableName, String tableType) Method for caller to supply table name and type info for the pending SQL statement.
void	setWhereClause(String whereClause) Method for caller to supply the WHERE clause signature of the pending SELECT, UPDATE, or DELETE statement.

Methods inherited from class java.lang.Object

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

Constructor Detail

DBLockGenerator

public DBLockGenerator()

Method Detail

setTable

public void setTable(String tableName,
                     String tableType)

Description copied from interface: DBLockStatementGenerator

Method for caller to supply table name and type info for the pending SQL statement.

Specified by:

setTable in interface DBLockStatementGenerator

Parameters:

tableName - will not be null, empty string, or whitespace

tableType - will be one of the TYPE values defined as part of this interface

addWhereColumn

public void addWhereColumn(String columnName)

Description copied from interface: DBLockStatementGenerator

Method for caller to supply columns that are listed as part of the WHERE clause for a pending SELECT, UPDATE, or DELETE statement.

Specified by:

addWhereColumn in interface DBLockStatementGenerator

Parameters:

columnName - will not be null, empty string, or whitespace

addPrimaryKeyColumn

public void addPrimaryKeyColumn(String columnName)

Description copied from interface: DBLockStatementGenerator

Method for caller to supply table primary key info for the table referenced in the pending SQL statement.

Specified by:

addPrimaryKeyColumn in interface DBLockStatementGenerator

Parameters:

columnName - will not be null, empty string, or whitespace

addListedColumn

public void addListedColumn(String columnName)

Description copied from interface: DBLockStatementGenerator

Method for caller to supply columns that are listed as part of a pending SELECT, INSERT or UPDATE statement.

Specified by:

addListedColumn in interface DBLockStatementGenerator

Parameters:

columnName - will not be null, empty string, or whitespace

setWhereClause

public void setWhereClause(String whereClause)

Description copied from interface: DBLockStatementGenerator

Method for caller to supply the WHERE clause signature of the pending SELECT, UPDATE, or DELETE statement.

This should be appened as-is if the lock statement being generated requires a WHERE clause. The caller will set parameter values.

Specified by:

setWhereClause in interface DBLockStatementGenerator

Parameters:

whereClause - contains a single whitespace character before the word WHERE; will not be null, empty string, or whitespace

generateSelectLock

public DBLock generateSelectLock()

Description copied from interface: DBLockStatementGenerator

Method for caller to request the appropriate database lock for a pending SELECT statement.

This method is currently not invoked in any rt. Its use is reserved for future use.

Specified by:

generateSelectLock in interface DBLockStatementGenerator

Returns:

should not return null

generateInsertLock

public DBLock generateInsertLock()

Description copied from interface: DBLockStatementGenerator

Method for caller to request the appropriate database lock for a pending INSERT statement.

Specified by:

generateInsertLock in interface DBLockStatementGenerator

Returns:

should not return null

generateUpdateLock

public DBLock generateUpdateLock()

Description copied from interface: DBLockStatementGenerator

Method for caller to request the appropriate database lock for a pending UPDATE statement.

Specified by:

generateUpdateLock in interface DBLockStatementGenerator

Returns:

should not return null

generateDeleteLock

public DBLock generateDeleteLock()

Description copied from interface: DBLockStatementGenerator

Method for caller to request the appropriate database lock for a pending DELETE statement.

Specified by:

generateDeleteLock in interface DBLockStatementGenerator

Returns:

should not return null

reset

public void reset()

Description copied from interface: DBLockStatementGenerator

Method for caller to reset the state of this generator for use with another pending SQL statement.

Specified by:

reset in interface DBLockStatementGenerator