Class UpdateStatement

java.lang.Object

SQLStatement

UpdateStatement

public class UpdateStatement
extends SQLStatement

A class that represents an UPDATE statement.

Constructor Summary

Constructors

Constructor and Description
UpdateStatement(Table t, ArrayList<Column> colList, ConditionalExpression where) Constructs an UpdateStatement object involving the specified table, list of columns, and conditional expression.

Method Summary

Modifier and Type	Method and Description
void	execute() Executes this SQL statement.

Methods inherited from class SQLStatement

addColumn, addColumnVal, addTable, getColumn, getColumnVal, getTable, getWhere, getWhereColumn, numColumns, numColumnVals, numTables, numWhereColumns, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

UpdateStatement

public UpdateStatement(Table t,
                       ArrayList<Column> colList,
                       ConditionalExpression where)

Constructs an UpdateStatement object involving the specified table, list of columns, and conditional expression. If no conditional expression is specified, the update will be applied to all rows in the table. Note: the update values should have been set within the Column objects in the list of columns before this constructor is invoked.

Parameters:

t - the table in which the updates should occur

colList - the list of columns for which updates are specified

where - the conditional expression from the WHERE clause

Method Detail

execute

public void execute()
             throws DatabaseException,
                    DeadlockException

Description copied from class: SQLStatement

Executes this SQL statement.

Specified by:

execute in class SQLStatement

Throws:

DatabaseException - if Berkeley DB encounters another problem accessing an underlying database.

DeadlockException - if deadlock occurs while accessing an underlying database.