casa::TaQLNodeVisitor Class Reference

Class to visit the nodes in the raw TaQL parse tree. More...

#include <TaQLNodeVisitor.h>

Inheritance diagram for casa::TaQLNodeVisitor:

List of all members.

Public Member Functions
virtual	~TaQLNodeVisitor ()
virtual TaQLNodeResult	visitConstNode (const TaQLConstNodeRep &node)=0
	Define the functions to visit each node type.
virtual TaQLNodeResult	visitRegexNode (const TaQLRegexNodeRep &node)=0
virtual TaQLNodeResult	visitUnaryNode (const TaQLUnaryNodeRep &node)=0
virtual TaQLNodeResult	visitBinaryNode (const TaQLBinaryNodeRep &node)=0
virtual TaQLNodeResult	visitMultiNode (const TaQLMultiNodeRep &node)=0
virtual TaQLNodeResult	visitFuncNode (const TaQLFuncNodeRep &node)=0
virtual TaQLNodeResult	visitRangeNode (const TaQLRangeNodeRep &node)=0
virtual TaQLNodeResult	visitIndexNode (const TaQLIndexNodeRep &node)=0
virtual TaQLNodeResult	visitKeyColNode (const TaQLKeyColNodeRep &node)=0
virtual TaQLNodeResult	visitTableNode (const TaQLTableNodeRep &node)=0
virtual TaQLNodeResult	visitColNode (const TaQLColNodeRep &node)=0
virtual TaQLNodeResult	visitColumnsNode (const TaQLColumnsNodeRep &node)=0
virtual TaQLNodeResult	visitJoinNode (const TaQLJoinNodeRep &node)=0
virtual TaQLNodeResult	visitSortKeyNode (const TaQLSortKeyNodeRep &node)=0
virtual TaQLNodeResult	visitSortNode (const TaQLSortNodeRep &node)=0
virtual TaQLNodeResult	visitLimitOffNode (const TaQLLimitOffNodeRep &node)=0
virtual TaQLNodeResult	visitGivingNode (const TaQLGivingNodeRep &node)=0
virtual TaQLNodeResult	visitUpdExprNode (const TaQLUpdExprNodeRep &node)=0
virtual TaQLNodeResult	visitSelectNode (const TaQLSelectNodeRep &node)=0
virtual TaQLNodeResult	visitUpdateNode (const TaQLUpdateNodeRep &node)=0
virtual TaQLNodeResult	visitInsertNode (const TaQLInsertNodeRep &node)=0
virtual TaQLNodeResult	visitDeleteNode (const TaQLDeleteNodeRep &node)=0
virtual TaQLNodeResult	visitCountNode (const TaQLCountNodeRep &node)=0
virtual TaQLNodeResult	visitCalcNode (const TaQLCalcNodeRep &node)=0
virtual TaQLNodeResult	visitCreTabNode (const TaQLCreTabNodeRep &node)=0
virtual TaQLNodeResult	visitColSpecNode (const TaQLColSpecNodeRep &node)=0
virtual TaQLNodeResult	visitRecFldNode (const TaQLRecFldNodeRep &node)=0
virtual TaQLNodeResult	visitUnitNode (const TaQLUnitNodeRep &node)=0
Protected Member Functions
TaQLNodeResult	visitNode (const TaQLNode &node)

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Detailed Description

Class to visit the nodes in the raw TaQL parse tree.

Intended use:

Internal

Review Status

Test programs:

tTableGram

Prerequisite

• TaQLNode
• Note 199 describing TaQL

Synopsis

TaQLNodeVisitor is the abstract base class for classes that want to visit a TaQLNode tree, i.e. traverse the tree. Each visit results in a TaQLNodeResult object which acts as the basis for the actual result object.
A specialization of TaQLNodeVisitor (e.g. class TaQLNodeHandler needs to implement the various visitXXNode functions. A visit function will process a node which usually means visiting its children, etc..

Motivation

The visitor design pattern separates the tree from the way it is processed. In this way any handler can be created. For instance, a query optimizer could be a future other handler.

Definition at line 72 of file TaQLNodeVisitor.h.

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Constructor & Destructor Documentation

virtual casa::TaQLNodeVisitor::~TaQLNodeVisitor

(

)

[virtual]

---

Member Function Documentation

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitBinaryNode

(

const TaQLBinaryNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitCalcNode

(

const TaQLCalcNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitColNode

(

const TaQLColNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitColSpecNode

(

const TaQLColSpecNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitColumnsNode

(

const TaQLColumnsNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitConstNode

(

const TaQLConstNodeRep &

node

)

[pure virtual]

Define the functions to visit each node type.

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitCountNode

(

const TaQLCountNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitCreTabNode

(

const TaQLCreTabNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitDeleteNode

(

const TaQLDeleteNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitFuncNode

(

const TaQLFuncNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitGivingNode

(

const TaQLGivingNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitIndexNode

(

const TaQLIndexNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitInsertNode

(

const TaQLInsertNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitJoinNode

(

const TaQLJoinNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitKeyColNode

(

const TaQLKeyColNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitLimitOffNode

(

const TaQLLimitOffNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitMultiNode

(

const TaQLMultiNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

TaQLNodeResult casa::TaQLNodeVisitor::visitNode

(

const TaQLNode &

node

)

[inline, protected]

A convenience function to visit the given node using this visitor.

Definition at line 111 of file TaQLNodeVisitor.h.

References casa::TaQLNode::visit().

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitRangeNode

(

const TaQLRangeNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitRecFldNode

(

const TaQLRecFldNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitRegexNode

(

const TaQLRegexNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitSelectNode

(

const TaQLSelectNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitSortKeyNode

(

const TaQLSortKeyNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitSortNode

(

const TaQLSortNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitTableNode

(

const TaQLTableNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitUnaryNode

(

const TaQLUnaryNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitUnitNode

(

const TaQLUnitNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitUpdateNode

(

const TaQLUpdateNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

virtual TaQLNodeResult casa::TaQLNodeVisitor::visitUpdExprNode

(

const TaQLUpdExprNodeRep &

node

)

[pure virtual]

Implemented in casa::TaQLNodeHandler.

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The documentation for this class was generated from the following file:

• casacore/tables/Tables/TaQLNodeVisitor.h