Class DropTableNode

java.lang.Object

org.apache.derby.impl.sql.compile.QueryTreeNode

org.apache.derby.impl.sql.compile.StatementNode

org.apache.derby.impl.sql.compile.DDLStatementNode

org.apache.derby.impl.sql.compile.DropTableNode

All Implemented Interfaces:

Visitable

class DropTableNode
extends DDLStatementNode

A DropTableNode is the root of a QueryTree that represents a DROP TABLE statement.

Field Summary

Fields

Modifier and Type	Field	Description
private long	conglomerateNumber
private int	dropBehavior
private TableDescriptor	td

Fields inherited from class DDLStatementNode

ADD_TYPE, DROP_STATISTICS, DROP_TYPE, implicitCreateSchema, LOCKING_TYPE, MODIFY_TYPE, UNKNOWN_TYPE, UPDATE_STATISTICS

Fields inherited from class StatementNode

EMPTY_TD_LIST, NEED_CURSOR_ACTIVATION, NEED_DDL_ACTIVATION, NEED_NOTHING_ACTIVATION, NEED_PARAM_ACTIVATION, NEED_ROW_ACTIVATION

Fields inherited from class QueryTreeNode

AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_CYCLE, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX

Constructor Summary

Constructors

Constructor	Description
DropTableNode(TableName dropObjectName, int dropBehavior, ContextManager cm)	Constructor for a DropTableNode

Method Summary

Modifier and Type	Method	Description
void	bindStatement()	Bind this LockTableNode.
ConstantAction	makeConstantAction()	Create the Constant information that will drive the guts of Execution.
boolean	referencesSessionSchema()	Return true if the node references SESSION schema tables (temporary or permanent)
(package private) String	statementToString()
String	toString()	Convert this object to a String.

Methods inherited from class DDLStatementNode

acceptChildren, activationKind, generate, getFullName, getObjectName, getRelativeName, getSchemaDescriptor, getSchemaDescriptor, getTableDescriptor, getTableDescriptor, getTableDescriptor, getTableDescriptor, initAndCheck, isAtomic, makeFromList

Methods inherited from class StatementNode

executeSchemaName, executeStatementName, generate, getCursorInfo, getSPSName, lockTableForCompilation, makeResultDescription, needsSavepoint, optimizeStatement, updateIndexStatisticsFor

Methods inherited from class QueryTreeNode

accept, addTag, addUDTUsagePriv, addUDTUsagePriv, bindOffsetFetch, bindRowMultiSet, bindUserCatalogType, bindUserType, checkReliability, checkReliability, convertDefaultNode, copyTagsFrom, createTypeDependency, debugFlush, debugPrint, disablePrivilegeCollection, formatNodeString, generateAuthorizeCheck, getBeginOffset, getClassFactory, getCompilerContext, getContext, getContextManager, getDataDictionary, getDependencyManager, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getIntProperty, getLanguageConnectionContext, getLongProperty, getNullNode, getOffsetOrderedNodes, getOptimizerFactory, getOptimizerTracer, getParameterTypes, getSchemaDescriptor, getSchemaDescriptor, getStatementType, getTableDescriptor, getTypeCompiler, getUDTDesc, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeTableName, makeTableName, nodeHeader, optimizerTracingIsOn, orReliability, parseSearchCondition, parseStatement, printLabel, printSubNodes, resolveTableToSynonym, setBeginOffset, setEndOffset, setRefActionInfo, stackPrint, taggedWith, treePrint, treePrint, verifyClassExist

Methods inherited from class Object

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

Field Details

conglomerateNumber

private long conglomerateNumber

dropBehavior

private int dropBehavior

td

private TableDescriptor td

Constructor Details

DropTableNode

DropTableNode(TableName dropObjectName,
 int dropBehavior,
 ContextManager cm)
       throws StandardException

Constructor for a DropTableNode

Parameters:

dropObjectName - The name of the object being dropped

dropBehavior - Drop behavior (RESTRICT | CASCADE)

cm - The context manager

Throws:

StandardException

Method Details

toString

public String toString()

Convert this object to a String. See comments in QueryTreeNode.java for how this should be done for tree printing.

Overrides:

toString in class DDLStatementNode

Returns:

This object as a String

statementToString

String statementToString()

Specified by:

statementToString in class StatementNode

bindStatement

public void bindStatement()
                   throws StandardException

Bind this LockTableNode. This means looking up the table, verifying it exists and getting the heap conglomerate number.

Overrides:

bindStatement in class StatementNode

Throws:

StandardException - Thrown on error

referencesSessionSchema

public boolean referencesSessionSchema()
                                throws StandardException

Return true if the node references SESSION schema tables (temporary or permanent)

Overrides:

referencesSessionSchema in class QueryTreeNode

Returns:

true if references SESSION schema tables, else false

Throws:

StandardException - Thrown on error

makeConstantAction

public ConstantAction makeConstantAction()
                                  throws StandardException

Create the Constant information that will drive the guts of Execution.

Overrides:

makeConstantAction in class QueryTreeNode

Throws:

StandardException - Thrown on failure