org.apache.derby.impl.sql.compile
Class CreateViewNode

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.CreateStatementNode
                  org.apache.derby.impl.sql.compile.CreateViewNode

All Implemented Interfaces:

Visitable

public class CreateViewNode

extends CreateStatementNode

A CreateViewNode is the root of a QueryTree that represents a CREATE VIEW statement.

Author:

Jerry Brenner

Field Summary

(package private) int	checkOption
(package private) ColumnInfo[]	colInfos
(package private) Dependent	currentDependent
(package private) ProviderInfo[]	providerInfos
(package private) java.lang.String	qeText
(package private) ResultSetNode	queryExpression
(package private) ResultColumnList	resultColumns

Fields inherited from class org.apache.derby.impl.sql.compile.DDLStatementNode

ADD_TYPE, DROP_TYPE, implicitCreateSchema, LOCKING_TYPE, MODIFY_TYPE, UNKNOWN_TYPE

Fields inherited from class org.apache.derby.impl.sql.compile.StatementNode

NEED_CURSOR_ACTIVATION, NEED_DDL_ACTIVATION, NEED_NOTHING_ACTIVATION, NEED_PARAM_ACTIVATION, NEED_ROW_ACTIVATION

Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode

AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX, beginOffset, endOffset

Constructor Summary

CreateViewNode()

Method Summary

Visitable	accept(Visitor v) Accept a visitor, and call v.visit() on child nodes as necessary.
QueryTreeNode	bind() Bind this CreateViewNode.
private ProviderInfo[]	bindViewDefinition(DataDictionary dataDictionary, CompilerContext compilerContext, LanguageConnectionContext lcc, NodeFactory nodeFactory, ResultSetNode queryExpr, ContextManager cm) Bind the query expression for a view definition.
private void	genColumnInfos(ColumnInfo[] colInfos) Fill in the ColumnInfo[] for this create view.
int	getCheckOption()
ColumnInfo[]	getColumnInfo()
(package private) ResultSetNode	getParsedQueryExpression() Get the parsed query expression (the SELECT statement).
ProviderInfo[]	getProviderInfo()
void	init(java.lang.Object newObjectName, java.lang.Object resultColumns, java.lang.Object queryExpression, java.lang.Object checkOption, java.lang.Object qeText) Initializer for a CreateViewNode
ConstantAction	makeConstantAction() Create the Constant information that will drive the guts of Execution.
void	printSubNodes(int depth) Prints the sub-nodes of this object.
boolean	referencesSessionSchema() Return true if the node references SESSION schema tables (temporary or permanent)
java.lang.String	statementToString()
java.lang.String	toString() Convert this object to a String.

Methods inherited from class org.apache.derby.impl.sql.compile.CreateStatementNode

alterItem, isCreate

Methods inherited from class org.apache.derby.impl.sql.compile.DDLStatementNode

activationKind, bindName, generate, getFullName, getObjectName, getRelativeName, getSchemaDescriptor, getTableDescriptor, getTableDescriptor, getTableDescriptor, init, initAndCheck, isAtomic

Methods inherited from class org.apache.derby.impl.sql.compile.StatementNode

generate, lockTableForCompilation

Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode

convertDefaultNode, debugFlush, debugPrint, executeSchemaName, executeStatementName, formatNodeString, foundString, generateAuthorizeCheck, getBeginOffset, getClassFactory, getCompilerContext, getContextManager, getCursorInfo, getDataDictionary, getDependencyManager, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getIntProperty, getLanguageConnectionContext, getNodeFactory, getNodeType, getNullNode, getParameterTypes, getRowEstimate, getSchemaDescriptor, getSchemaDescriptor, getSPSName, getStatementType, getTableDescriptor, getTypeCompiler, init, init, init, init, init, init, init, init, init, init, init, init, isInstanceOf, isSessionSchema, isSessionSchema, makeResultDescription, makeTableName, needsSavepoint, nodeHeader, optimize, parseQueryText, printLabel, resolveTableToSynonym, setBeginOffset, setContextManager, setEndOffset, setNodeType, setRefActionInfo, treePrint, treePrint, verifyClassExist

Methods inherited from class java.lang.Object

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

Field Detail

currentDependent

Dependent currentDependent

resultColumns

ResultColumnList resultColumns

queryExpression

ResultSetNode queryExpression

qeText

java.lang.String qeText

checkOption

int checkOption

providerInfos

ProviderInfo[] providerInfos

colInfos

ColumnInfo[] colInfos

Constructor Detail

CreateViewNode

public CreateViewNode()

Method Detail

init

public void init(java.lang.Object newObjectName,
                 java.lang.Object resultColumns,
                 java.lang.Object queryExpression,
                 java.lang.Object checkOption,
                 java.lang.Object qeText)
          throws StandardException

Initializer for a CreateViewNode

Overrides:

init in class QueryTreeNode

Parameters:

newObjectName - The name of the table to be created

resultColumns - The column list from the view definition, if specified

queryExpression - The query expression for the view

checkOption - The type of WITH CHECK OPTION that was specified (NONE for now)

qeText - The text for the queryExpression

Throws:

StandardException - Thrown on error

toString

public java.lang.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

public java.lang.String statementToString()

Specified by:

statementToString in class StatementNode

printSubNodes

public void printSubNodes(int depth)

Prints the sub-nodes of this object. See QueryTreeNode.java for how tree printing is supposed to work.

Overrides:

printSubNodes in class QueryTreeNode

Parameters:

depth - The depth of this node in the tree

Returns:

Nothing

getCheckOption

public int getCheckOption()

getProviderInfo

public ProviderInfo[] getProviderInfo()

getColumnInfo

public ColumnInfo[] getColumnInfo()

bind

public QueryTreeNode bind()
                   throws StandardException

Bind this CreateViewNode. This means doing any static error checking that can be done before actually creating the table. For example, verifying that the ResultColumnList does not contain any duplicate column names.

Overrides:

bind in class QueryTreeNode

Returns:

The bound query tree

Throws:

StandardException - Thrown on error

bindViewDefinition

private ProviderInfo[] bindViewDefinition(DataDictionary dataDictionary,
                                          CompilerContext compilerContext,
                                          LanguageConnectionContext lcc,
                                          NodeFactory nodeFactory,
                                          ResultSetNode queryExpr,
                                          ContextManager cm)
                                   throws StandardException

Bind the query expression for a view definition.

Parameters:

dataDictionary - The DataDictionary to use to look up columns, tables, etc.

Returns:

Array of providers that this view depends on.

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

genColumnInfos

private void genColumnInfos(ColumnInfo[] colInfos)

Fill in the ColumnInfo[] for this create view.

Parameters:

colInfos - The ColumnInfo[] to be filled in.

Returns:

Nothing.

getParsedQueryExpression

ResultSetNode getParsedQueryExpression()

Get the parsed query expression (the SELECT statement).

Returns:

the parsed query expression.

accept

public Visitable accept(Visitor v)
                 throws StandardException

Accept a visitor, and call v.visit() on child nodes as necessary.

Specified by:

accept in interface Visitable

Overrides:

accept in class QueryTreeNode

Parameters:

v - the visitor

Throws:

StandardException - on error