Class CreateViewConstantAction

java.lang.Object

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

org.apache.derby.impl.sql.execute.CreateViewConstantAction

All Implemented Interfaces:

ConstantAction

class CreateViewConstantAction
extends DDLConstantAction

This class describes actions that are ALWAYS performed for a CREATE VIEW Statement at Execution time. A view is represented as:

• TableDescriptor with the name of the view and type VIEW_TYPE
• Set of ColumnDescriptor's for the column names and types
• ViewDescriptor describing the SQL query that makes up the view.

Dependencies are created as:

• ViewDescriptor depends on the Providers that its compiled query depends on.
• ViewDescriptor depends on the privileges required to execute the view.

Note there are no dependencies created between the ViewDescriptor, TableDecriptor and the ColumnDescriptor's.

Field Summary

Fields

Modifier and Type	Field	Description
private final int	checkOption
private final ColumnInfo[]	columnInfo
private final UUID	compSchemaId
private final ProviderInfo[]	providerInfo
private final String	schemaName
private final String	tableName
private final int	tableType
private final String	viewText

Fields inherited from interface ConstantAction

WHEN_MATCHED_THEN_DELETE, WHEN_MATCHED_THEN_UPDATE, WHEN_NOT_MATCHED_THEN_INSERT

Constructor Summary

Constructors

Constructor	Description
CreateViewConstantAction(String schemaName, String tableName, int tableType, String viewText, int checkOption, ColumnInfo[] columnInfo, ProviderInfo[] providerInfo, UUID compSchemaId)	Make the ConstantAction for a CREATE VIEW statement.

Method Summary

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

tableName

private final String tableName

schemaName

private final String schemaName

viewText

private final String viewText

tableType

private final int tableType

checkOption

private final int checkOption

columnInfo

private final ColumnInfo[] columnInfo

providerInfo

private final ProviderInfo[] providerInfo

compSchemaId

private final UUID compSchemaId

Constructor Details

CreateViewConstantAction

CreateViewConstantAction(String schemaName,
 String tableName,
 int tableType,
 String viewText,
 int checkOption,
 ColumnInfo[] columnInfo,
 ProviderInfo[] providerInfo,
 UUID compSchemaId)

Make the ConstantAction for a CREATE VIEW statement.

Parameters:

schemaName - name for the schema that view lives in.

tableName - Name of view.

tableType - Type of table (ie. TableDescriptor.VIEW_TYPE).

viewText - Text of query expression for view definition

checkOption - Check option type

columnInfo - Information on all the columns in the table.

providerInfo - Information on all the Providers

compSchemaId - Compilation Schema Id

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 VIEW.

Parameters:

activation - The execution environment for this constant action.

Throws:

StandardException - Thrown on failure

See Also:

• ConstantAction.executeConstantAction(Activation)