org.axiondb.engine.commands
Class DropCommand

java.lang.Object
  org.axiondb.engine.commands.BaseAxionCommand
      org.axiondb.engine.commands.DropCommand

All Implemented Interfaces:

AxionCommand

Direct Known Subclasses:

DropDatabaseLinkCommand, DropIndexCommand, DropSequenceCommand, DropTableCommand, DropViewCommand

public abstract class DropCommand
extends BaseAxionCommand

Abstract base class for things like DROP TABLE and DROP SEQUENCE.

Version:

$Revision: 1.3 $ $Date: 2005/12/20 18:32:28 $

Constructor Summary

DropCommand()

Method Summary

abstract boolean	execute(Database db) Executes an SQL statement that may return multiple results.
AxionResultSet	executeQuery(Database database) Unsupported
int	executeUpdate(Database database) Executes an SQL that may add, delete or modify zero or more rows within the database, such as an INSERT, UPDATE or DELETE statement.
java.lang.String	getObjectName()
boolean	isCascade()
boolean	isIfExists()
void	setCascade(boolean cascade)
void	setIfExists(boolean flag)
void	setObjectName(java.lang.String name)

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

assertNotReadOnly, attemptToConvertValue, bindAll, buildBindVariables, 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

DropCommand

public DropCommand()

Method Detail

execute

public abstract boolean execute(Database db)
                         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 database)
                  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()

getObjectName

public java.lang.String getObjectName()

isCascade

public boolean isCascade()

isIfExists

public boolean isIfExists()

setCascade

public void setCascade(boolean cascade)

setIfExists

public void setIfExists(boolean flag)

setObjectName

public void setObjectName(java.lang.String name)