Package org.apache.derby.impl.sql.execute

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 java.lang.String	_schemaName
private java.lang.String	_sequenceName
private long	_stepValue

Fields inherited from interface org.apache.derby.iapi.sql.execute.ConstantAction

WHEN_MATCHED_THEN_DELETE, WHEN_MATCHED_THEN_UPDATE, WHEN_NOT_MATCHED_THEN_INSERT

Constructor Summary

Constructors

Constructor	Description
CreateSequenceConstantAction(java.lang.String schemaName, java.lang.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.
java.lang.String	toString()

Methods inherited from class org.apache.derby.impl.sql.execute.DDLConstantAction

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

Methods inherited from class java.lang.Object

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

Field Detail

_sequenceName

private java.lang.String _sequenceName

_schemaName

private java.lang.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 Detail

CreateSequenceConstantAction

public CreateSequenceConstantAction(java.lang.String schemaName,
                                    java.lang.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 Detail

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(org.apache.derby.iapi.sql.Activation)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object