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

java.lang.Object
  org.apache.derby.impl.sql.compile.QueryTreeNode
      org.apache.derby.impl.sql.compile.QueryTreeNodeVector
          org.apache.derby.impl.sql.compile.SubqueryList

All Implemented Interfaces:

org.apache.derby.iapi.sql.compile.Visitable

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public class SubqueryList

extends QueryTreeNodeVector

A SubqueryList represents a list of subquerys within a specific clause (select, where or having) in a DML statement. It extends QueryTreeNodeVector.

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Field Summary

 

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

SubqueryList()

 

Method Summary
org.apache.derby.iapi.sql.compile.Visitable	accept(org.apache.derby.iapi.sql.compile.Visitor v)           Accept a visitor, and call v.visit() on child nodes as necessary.
void	addElement(QueryTreeNode qt)
void	addSubqueryNode(SubqueryNode subqueryNode)           Add a subquery to the list.
(package private)  void	decrementLevel(int decrement)           Decrement (query block) level (0-based) for all of the tables in this subquery list.
void	destructiveAppend(QueryTreeNodeVector qtnv)
QueryTreeNode	elementAt(int index)
(package private)  int	indexOf(QueryTreeNode qt)
(package private)  void	insertElementAt(QueryTreeNode qt, int index)
void	modifyAccessPaths()           Modify the access paths for all subqueries in this list.
void	nondestructiveAppend(QueryTreeNodeVector qtnv)
void	optimize(org.apache.derby.iapi.sql.dictionary.DataDictionary dataDictionary, double outerRows)           Optimize the subqueries in this list.
void	preprocess(int numTables, FromList outerFromList, SubqueryList outerSubqueryList, PredicateList outerPredicateList)           Preprocess a SubqueryList.
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)
boolean	referencesTarget(java.lang.String name, boolean baseTable)           Search to see if a query references the specifed table name.
(package private)  java.lang.Object	remove(int index)
(package private)  void	removeAllElements()
(package private)  void	removeElement(QueryTreeNode qt)
(package private)  void	removeElementAt(int index)
(package private)  void	setElementAt(QueryTreeNode qt, int index)
void	setPointOfAttachment(int pointOfAttachment)           Set the point of attachment in all subqueries in this list.
int	size()
java.lang.String	toString()           Format this list as a string We can simply iterate through the list.

 

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

bind, convertDefaultNode, debugFlush, debugPrint, executeSchemaName, executeStatementName, formatNodeString, foundString, generate, generate, 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, init, init, isAtomic, isInstanceOf, isSessionSchema, isSessionSchema, makeConstantAction, 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

 

Constructor Detail

SubqueryList

public SubqueryList()

Method Detail

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

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addSubqueryNode

public void addSubqueryNode(SubqueryNode subqueryNode)
                     throws org.apache.derby.iapi.error.StandardException

Add a subquery to the list.

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preprocess

public void preprocess(int numTables,
                       FromList outerFromList,
                       SubqueryList outerSubqueryList,
                       PredicateList outerPredicateList)
                throws org.apache.derby.iapi.error.StandardException

Preprocess a SubqueryList. For now, we just preprocess each SubqueryNode in the list.

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optimize

public void optimize(org.apache.derby.iapi.sql.dictionary.DataDictionary dataDictionary,
                     double outerRows)
              throws org.apache.derby.iapi.error.StandardException

Optimize the subqueries in this list.

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modifyAccessPaths

public void modifyAccessPaths()
                       throws org.apache.derby.iapi.error.StandardException

Modify the access paths for all subqueries in this list.

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referencesTarget

public boolean referencesTarget(java.lang.String name,
                                boolean baseTable)
                         throws org.apache.derby.iapi.error.StandardException

Search to see if a query references the specifed table name.

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referencesSessionSchema

public boolean referencesSessionSchema()
                                throws org.apache.derby.iapi.error.StandardException

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

Overrides:

referencesSessionSchema in class QueryTreeNode

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setPointOfAttachment

public void setPointOfAttachment(int pointOfAttachment)
                          throws org.apache.derby.iapi.error.StandardException

Set the point of attachment in all subqueries in this list.

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decrementLevel

void decrementLevel(int decrement)

Decrement (query block) level (0-based) for all of the tables in this subquery list. This is useful when flattening a subquery.

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size

public final int size()

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elementAt

public QueryTreeNode elementAt(int index)

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addElement

public final void addElement(QueryTreeNode qt)

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removeElementAt

final void removeElementAt(int index)

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removeElement

final void removeElement(QueryTreeNode qt)

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remove

final java.lang.Object remove(int index)

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indexOf

final int indexOf(QueryTreeNode qt)

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setElementAt

final void setElementAt(QueryTreeNode qt,
                        int index)

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destructiveAppend

public void destructiveAppend(QueryTreeNodeVector qtnv)

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nondestructiveAppend

public void nondestructiveAppend(QueryTreeNodeVector qtnv)

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removeAllElements

final void removeAllElements()

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insertElementAt

final void insertElementAt(QueryTreeNode qt,
                           int index)

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toString

public java.lang.String toString()

Format this list as a string We can simply iterate through the list. Note each list member is a QueryTreeNode, and so should have its specialization of toString defined.

Overrides:

toString in class QueryTreeNode

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accept

public org.apache.derby.iapi.sql.compile.Visitable accept(org.apache.derby.iapi.sql.compile.Visitor v)
                                                   throws org.apache.derby.iapi.error.StandardException

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

Specified by:

accept in interface org.apache.derby.iapi.sql.compile.Visitable

Overrides:

accept in class QueryTreeNode

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> apache >> derby >> impl >> sql >> [ compile overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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