Class CreateSequenceConstantAction

java.lang.Object

org.apache.derby.impl.sql.execute.DDLConstantAction

org.apache.derby.impl.sql.execute.CreateSequenceConstantAction

All Implemented Interfaces:

ConstantAction

class CreateSequenceConstantAction
extends DDLConstantAction

This class performs actions that are ALWAYS performed for a CREATE SEQUENCE statement at execution time. These SQL objects are stored in the SYS.SYSSEQUENCES table.

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	_cycle
private DataTypeDescriptor	_dataType
private long	_initialValue
private long	_maxValue
private long	_minValue
private String	_schemaName
private String	_sequenceName
private long	_stepValue

Fields inherited from interface ConstantAction

WHEN_MATCHED_THEN_DELETE, WHEN_MATCHED_THEN_UPDATE, WHEN_NOT_MATCHED_THEN_INSERT

Constructor Summary

Constructors

Constructor	Description
CreateSequenceConstantAction(String schemaName, String sequenceName, DataTypeDescriptor dataType, long initialValue, long stepValue, long maxValue, long minValue, boolean cycle)	Make the ConstantAction for a CREATE SEQUENCE statement.

Method Summary

Modifier and Type	Method	Description
void	executeConstantAction(Activation activation)	This is the guts of the Execution-time logic for CREATE SEQUENCE.
String	toString()

Methods inherited from class DDLConstantAction

addColumnDependencies, adjustUDTDependencies, adjustUDTDependencies, constructToString, getAndCheckSchemaDescriptor, getSchemaDescriptorForCreate, lockTableForDDL, storeConstraintDependenciesOnPrivileges, storeViewTriggerDependenciesOnPrivileges

Methods inherited from class Object

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

Field Details

_sequenceName

private String _sequenceName

_schemaName

private String _schemaName

_dataType

private DataTypeDescriptor _dataType

_initialValue

private long _initialValue

_stepValue

private long _stepValue

_maxValue

private long _maxValue

_minValue

private long _minValue

_cycle

private boolean _cycle

Constructor Details

CreateSequenceConstantAction

public CreateSequenceConstantAction(String schemaName,
 String sequenceName,
 DataTypeDescriptor dataType,
 long initialValue,
 long stepValue,
 long maxValue,
 long minValue,
 boolean cycle)

Make the ConstantAction for a CREATE SEQUENCE statement. When executed, will create a sequence by the given name.

Parameters:

sequenceName - The name of the sequence being created

dataType - Exact numeric type of the new sequence

initialValue - Starting value

stepValue - Increment amount

maxValue - Largest value returned by the sequence generator

minValue - Smallest value returned by the sequence generator

cycle - True if the generator should wrap around, false otherwise

Method Details

executeConstantAction

public void executeConstantAction(Activation activation)
                           throws StandardException

This is the guts of the Execution-time logic for CREATE SEQUENCE.

Parameters:

activation - The execution environment for this constant action.

Throws:

StandardException - Thrown on failure

See Also:

• ConstantAction.executeConstantAction(Activation)

toString

public String toString()

Overrides:

toString in class Object