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

java.lang.Object
  org.apache.derby.impl.sql.execute.GenericConstantAction
      org.apache.derby.impl.sql.execute.DDLConstantAction

All Implemented Interfaces:

ConstantAction

Direct Known Subclasses:

AddJarConstantAction, CreateAliasConstantAction, CreateSchemaConstantAction, CreateTableConstantAction, CreateViewConstantAction, DDLSingleTableConstantAction, DropAliasConstantAction, DropJarConstantAction, DropSchemaConstantAction, DropStatisticsConstantAction, DropViewConstantAction, ReplaceJarConstantAction, SavepointConstantAction, SetConstraintsConstantAction, UpdateStatisticsConstantAction

public abstract class DDLConstantAction

extends GenericConstantAction

Abstract class that has actions that are across all DDL actions.

Author:

jamie

Field Summary

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

RUNTIMESTATISTICS, STATISTICSTIMING

Constructor Summary

DDLConstantAction()

Method Summary

protected java.lang.String	constructToString(java.lang.String statementType, java.lang.String objectName)
(package private) static SchemaDescriptor	getAndCheckSchemaDescriptor(DataDictionary dd, UUID schemaId, java.lang.String statementType) Get the schema descriptor for the schemaid.
(package private) static SchemaDescriptor	getSchemaDescriptorForCreate(DataDictionary dd, Activation activation, java.lang.String schemaName) Get the schema descriptor in the creation of an object in the passed in schema.
(package private) void	lockTableForDDL(TransactionController tc, long heapConglomerateNumber, boolean exclusiveMode) Lock the table in exclusive or share mode to prevent deadlocks.
boolean	modifiesTableId(UUID tableId) Does this constant action modify the passed in table uuid?
void	readExternal(java.io.ObjectInput in)
boolean	upToDate() Reports whether these constants are up-to-date.
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class java.lang.Object

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

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

executeConstantAction

Constructor Detail

DDLConstantAction

public DDLConstantAction()

Method Detail

getAndCheckSchemaDescriptor

static SchemaDescriptor getAndCheckSchemaDescriptor(DataDictionary dd,
                                                    UUID schemaId,
                                                    java.lang.String statementType)
                                             throws StandardException

Get the schema descriptor for the schemaid.

Parameters:

dd - the data dictionary

schemaId - the schema id

statementType - string describing type of statement for error reporting. e.g. "ALTER STATEMENT"

Returns:

the schema descriptor

Throws:

StandardException - if schema is system schema

getSchemaDescriptorForCreate

static SchemaDescriptor getSchemaDescriptorForCreate(DataDictionary dd,
                                                     Activation activation,
                                                     java.lang.String schemaName)
                                              throws StandardException

Get the schema descriptor in the creation of an object in the passed in schema.

Parameters:

dd - the data dictionary

activation - activation

schemaName - name of the schema

Returns:

the schema descriptor

Throws:

StandardException - if the schema does not exist

lockTableForDDL

final void lockTableForDDL(TransactionController tc,
                           long heapConglomerateNumber,
                           boolean exclusiveMode)
                    throws StandardException

Lock the table in exclusive or share mode to prevent deadlocks.

Parameters:

tc - The TransactionController

heapConglomerateNumber - The conglomerate number for the heap.

exclusiveMode - Whether or not to lock the table in exclusive mode.

Returns:

Nothing.

Throws:

StandardException - if schema is system schema

modifiesTableId

public boolean modifiesTableId(UUID tableId)
                        throws StandardException

Does this constant action modify the passed in table uuid? By modify we mean add or drop things tied to this table (e.g. index, trigger, constraint). Things like views or spses that reference this table don't count.

Specified by:

modifiesTableId in interface ConstantAction

Overrides:

modifiesTableId in class GenericConstantAction

Parameters:

tableId - the table id

Throws:

StandardException - on error

constructToString

protected java.lang.String constructToString(java.lang.String statementType,
                                             java.lang.String objectName)

readExternal

public final void readExternal(java.io.ObjectInput in)

writeExternal

public final void writeExternal(java.io.ObjectOutput out)

upToDate

public final boolean upToDate()
                       throws StandardException

Reports whether these constants are up-to-date. This returns true for homogenous Cloudscape/Cloudsync. For the Plugin, this may return false;

Specified by:

upToDate in interface ConstantAction

Returns:

true if these constants are up-to-date false otherwise

Throws:

StandardException