Java Doc for BaseTableNumbersVisitor.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » impl » sql » compile » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.sql.compile 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.derby.impl.sql.compile.BaseTableNumbersVisitor

BaseTableNumbersVisitor
public class BaseTableNumbersVisitor implements Visitor(Code)
Walk through a subtree and build a list of the assigned numbers for all tables that exist in that subtree. We do this by looking for any column references in the subtree and, for each column reference, we walk down the ColumnReference-ResultColumn chain until we find the the bottom-most table number, which should correspond to a base table.



Constructor Summary
public  BaseTableNumbersVisitor(JBitSet tableMap)
     Constructor: takes a JBitSet to use as the holder for any base table numbers found while walking the subtree.

Method Summary
protected  voidsetTableMap(JBitSet tableMap)
     Set a new JBitSet to serve as the holder for base table numbers we find while walking.
public  booleanskipChildren(Visitable node)
    
public  booleanstopTraversal()
    
public  Visitablevisit(Visitable node)
    


Constructor Detail
BaseTableNumbersVisitor
public BaseTableNumbersVisitor(JBitSet tableMap)(Code)
Constructor: takes a JBitSet to use as the holder for any base table numbers found while walking the subtree.
Parameters:
  tableMap - JBitSet into which we put the table numbers we find.




Method Detail
setTableMap
protected void setTableMap(JBitSet tableMap)(Code)
Set a new JBitSet to serve as the holder for base table numbers we find while walking.
Parameters:
  tableMap - JBitSet into which we put the table numbers we find.



skipChildren
public boolean skipChildren(Visitable node)(Code)

See Also:   org.apache.derby.iapi.sql.compile.Visitor.skipChildren



stopTraversal
public boolean stopTraversal()(Code)

See Also:   org.apache.derby.iapi.sql.compile.Visitor.stopTraversal



visit
public Visitable visit(Visitable node) throws StandardException(Code)

See Also:   org.apache.derby.iapi.sql.compile.Visitor.visit



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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