org.axiondb.engine.commands

Class DeleteCommand

java.lang.Object

org.axiondb.engine.commands.BaseAxionCommand

org.axiondb.engine.commands.ChildTableUpdater

org.axiondb.engine.commands.DeleteCommand

All Implemented Interfaces:

AxionCommand

public class DeleteCommand
extends ChildTableUpdater

A DELETE command.

Version:

$Revision: 1.33 $ $Date: 2005/12/22 09:02:29 $

Constructor Summary

Constructors

Constructor and Description
DeleteCommand(java.lang.String tableName, Selectable where)
DeleteCommand(TableIdentifier table, Selectable where)

Method Summary

Modifier and Type	Method and Description
protected void	buildBindVariables()
boolean	execute(Database database) Executes an SQL statement that may return multiple results.
AxionResultSet	executeQuery(Database database) Unsupported
int	executeUpdate(Database db) Executes an SQL that may add, delete or modify zero or more rows within the database, such as an INSERT, UPDATE or DELETE statement.
TableIdentifier	getTable()
Selectable	getWhere()
protected void	resolve(Database db)

Methods inherited from class org.axiondb.engine.commands.ChildTableUpdater

deleteOrSetNullChildRows, deleteOrSetNullChildRows, updateOrSetNullChildRows, updateOrSetNullChildRows

Methods inherited from class org.axiondb.engine.commands.BaseAxionCommand

assertNotReadOnly, attemptToConvertValue, bindAll, clearBindings, createResolveSelectableVisitor, executeQuery, getBindVariableIterator, getBindVariableIterator, getBindVariables, getBindVariableVisitor, getColIdentifierList, getCommitSize, getEffectedRowCount, getResultSet, getRowIterator, makeRowDecorator, populateDefaultValues, populateSequenceColumns, resolveGeneratedColumns, resolveGeneratedColumns, resolveSelectable, resolveSelectable, resolveSelectableList, resolveSelectableList, setBindVariableVisitor, setDeferAllConstraintIfRequired, setEffectedRowCount, setResultSet, updateGeneratedValues

Methods inherited from class java.lang.Object

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

Constructor Detail

DeleteCommand

public DeleteCommand(java.lang.String tableName,
                     Selectable where)

DeleteCommand

public DeleteCommand(TableIdentifier table,
                     Selectable where)

Method Detail

execute

public boolean execute(Database database)
                throws AxionException

Description copied from interface: AxionCommand

Executes an SQL statement that may return multiple results.

Returns:

true if one or more ResultSets were generated, false otherwise

Throws:

AxionException

See Also:

Statement.execute(java.lang.String), PreparedStatement.execute()

executeQuery

public AxionResultSet executeQuery(Database database)
                            throws AxionException

Unsupported

Returns:

the generated ResultSet

Throws:

AxionException

See Also:

Statement.executeQuery(java.lang.String), PreparedStatement.executeQuery()

executeUpdate

public int executeUpdate(Database db)
                  throws AxionException

Description copied from interface: AxionCommand

Executes an SQL that may add, delete or modify zero or more rows within the database, such as an INSERT, UPDATE or DELETE statement. In addition, SQL statements that return nothing, such as SQL DDL statements, can be executed via this method.

Returns:

the number of rows modified

Throws:

AxionException

See Also:

Statement.executeUpdate(java.lang.String), PreparedStatement.executeUpdate()

getTable

public final TableIdentifier getTable()

getWhere

public final Selectable getWhere()

buildBindVariables

protected void buildBindVariables()

Overrides:

buildBindVariables in class BaseAxionCommand

resolve

protected void resolve(Database db)
                throws AxionException

Throws:

AxionException