Class CreateAliasConstantAction

java.lang.Object

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

org.apache.derby.impl.sql.execute.CreateAliasConstantAction

All Implemented Interfaces:

ConstantAction

class CreateAliasConstantAction
extends DDLConstantAction

This class performs actions that are ALWAYS performed for a CREATE FUNCTION, PROCEDURE or SYNONYM Statement at execution time. These SQL objects are stored in the SYS.SYSALIASES table and represented as AliasDescriptors.

Field Summary

Fields

Modifier and Type	Field	Description
private final AliasInfo	aliasInfo
private final String	aliasName
private final char	aliasType
private final String	javaClassName
private final char	nameSpace
private final String	schemaName

Fields inherited from interface ConstantAction

WHEN_MATCHED_THEN_DELETE, WHEN_MATCHED_THEN_UPDATE, WHEN_NOT_MATCHED_THEN_INSERT

Constructor Summary

Constructors

Constructor	Description
CreateAliasConstantAction(String aliasName, String schemaName, String javaClassName, AliasInfo aliasInfo, char aliasType)	Make the ConstantAction for a CREATE alias statement.

Method Summary

Modifier and Type	Method	Description
void	executeConstantAction(Activation activation)	This is the guts of the Execution-time logic for CREATE FUNCTION, PROCEDURE, SYNONYM, and TYPE.
String	toString()
private void	vetRoutine(DataDictionary dd, SchemaDescriptor sd, AliasDescriptor ads)	Common checks to be performed for functions and procedures

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

aliasName

private final String aliasName

schemaName

private final String schemaName

javaClassName

private final String javaClassName

aliasType

private final char aliasType

nameSpace

private final char nameSpace

aliasInfo

private final AliasInfo aliasInfo

Constructor Details

CreateAliasConstantAction

CreateAliasConstantAction(String aliasName,
 String schemaName,
 String javaClassName,
 AliasInfo aliasInfo,
 char aliasType)

Make the ConstantAction for a CREATE alias statement.

Parameters:

aliasName - Name of alias.

schemaName - Name of alias's schema.

javaClassName - Name of java class.

aliasInfo - AliasInfo

aliasType - The type of the alias

Method Details

toString

public String toString()

Overrides:

toString in class Object

executeConstantAction

public void executeConstantAction(Activation activation)
                           throws StandardException

This is the guts of the Execution-time logic for CREATE FUNCTION, PROCEDURE, SYNONYM, and TYPE.

A function, procedure, or udt is represented as:

• AliasDescriptor

Routine dependencies are created as:

• None

A synonym is represented as:

• AliasDescriptor
• TableDescriptor

Synonym dependencies are created as:

• None

In both cases a SchemaDescriptor will be created if needed. No dependency is created on the SchemaDescriptor.

Parameters:

activation - The execution environment for this constant action.

Throws:

StandardException - Thrown on failure

See Also:

• ConstantAction.executeConstantAction(Activation)
• AliasDescriptor
• TableDescriptor
• SchemaDescriptor

vetRoutine

private void vetRoutine(DataDictionary dd,
 SchemaDescriptor sd,
 AliasDescriptor ads)
                 throws StandardException

Common checks to be performed for functions and procedures

Throws:

StandardException