HasCorrelatedCRsVisitor (Apache Derby V10.14 Internals)

java.lang.Object
- org.apache.derby.impl.sql.compile.HasCorrelatedCRsVisitor

All Implemented Interfaces:

Visitor
```
class HasCorrelatedCRsVisitor
extends java.lang.Object
implements Visitor
```
Find out if we have an correlated column reference anywhere below us. Stop traversal as soon as we find one.

Field Summary

Fields
Modifier and Type Field Description

private boolean hasCorrelatedCRs

Fields
Modifier and Type	Field	Description
`private boolean`	`hasCorrelatedCRs`

Constructor Summary

Constructors
Constructor Description

HasCorrelatedCRsVisitor()
Construct a visitor

Constructors
Constructor	Description
`HasCorrelatedCRsVisitor()`	Construct a visitor

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`(package private) boolean`	`hasCorrelatedCRs()`	Indicate whether we found the node in question
`(package private) void`	`setHasCorrelatedCRs(boolean value)`	Shortcut to set if hasCorrelatedCRs
`boolean`	`skipChildren(Visitable v)`	Method that is called to indicate whether we should skip all nodes below this node for traversal.
`boolean`	`stopTraversal()`	Stop traversal if we found the target node
`Visitable`	`visit(Visitable node)`	If we have found the target node, we are done.
`boolean`	`visitChildrenFirst(Visitable v)`	Method that is called to see if `visit()` should be called on the children of `node` before it is called on `node` itself.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - hasCorrelatedCRs
```
private boolean hasCorrelatedCRs
```
- Constructor Detail
  - HasCorrelatedCRsVisitor
```
HasCorrelatedCRsVisitor()
```
    Construct a visitor
- Method Detail
  - visit
```
public Visitable visit(Visitable node)
```
    If we have found the target node, we are done.
    
    Specified by:
    
    visit in interface Visitor
    
    Parameters:
    
    node - the node to process
    
    Returns:
    
    me
  - stopTraversal
```
public boolean stopTraversal()
```
    Stop traversal if we found the target node
    
    Specified by:
    
    stopTraversal in interface Visitor
    
    Returns:
    
    true/false
  - skipChildren
```
public boolean skipChildren(Visitable v)
```
    Description copied from interface: Visitor
    
    Method that is called to indicate whether we should skip all nodes below this node for traversal. Useful if we want to effectively ignore/prune all branches under a particular node.
    Differs from stopTraversal() in that it only affects subtrees, rather than the entire traversal.
    
    Specified by:
    
    skipChildren in interface Visitor
    
    Parameters:
    
    v - the node to process
    
    Returns:
    
    true/false
  - visitChildrenFirst
```
public boolean visitChildrenFirst(Visitable v)
```
    Description copied from interface: Visitor
    
    Method that is called to see if visit() should be called on the children of node before it is called on node itself. If this method always returns true, the visitor will walk the tree bottom-up. If it always returns false, the tree is visited top-down.
    
    Specified by:
    
    visitChildrenFirst in interface Visitor
    
    Parameters:
    
    v - the top node of a sub-tree about to be visited
    
    Returns:
    
    true if node's children should be visited before node, false otherwise
  - hasCorrelatedCRs
```
boolean hasCorrelatedCRs()
```
    Indicate whether we found the node in question
    
    Returns:
    
    true/false
  - setHasCorrelatedCRs
```
void setHasCorrelatedCRs(boolean value)
```
    Shortcut to set if hasCorrelatedCRs
    
    Parameters:
    
    value - true/false

Class HasCorrelatedCRsVisitor

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

hasCorrelatedCRs

Constructor Detail

HasCorrelatedCRsVisitor

Method Detail

visit

stopTraversal

skipChildren

visitChildrenFirst

hasCorrelatedCRs

setHasCorrelatedCRs