com.yahoo.document.select.convert

Class SelectionExpressionConverter

java.lang.Object

com.yahoo.document.select.convert.SelectionExpressionConverter

All Implemented Interfaces:

Visitor

public class SelectionExpressionConverter
extends Object
implements Visitor

Class which converts a selection tree into a set of queries per document type. If unsupported operations are or illegal arguments are encountered, an exception is thrown.

Author:

Ulf Lilleengen

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	SelectionExpressionConverter.BuildState

Field Summary

Fields

Modifier and Type	Field and Description
private Map<String,NowQueryExpression>	expressionMap
private SelectionExpressionConverter.BuildState	state

Constructor Summary

Constructors

Constructor and Description
SelectionExpressionConverter()

Method Summary

Modifier and Type	Method and Description
Map<String,String>	getQueryMap()
private boolean	hasNow(ExpressionNode node)
void	visit(ArithmeticNode node)
void	visit(AttributeNode node)
void	visit(ComparisonNode node)
void	visit(DocumentNode node)
void	visit(EmbracedNode node)
void	visit(IdNode node)
void	visit(LiteralNode node)
void	visit(LogicNode node)
void	visit(NegationNode node)
void	visit(NowNode node)
void	visit(SearchColumnNode node)
void	visit(VariableNode node)

Methods inherited from class java.lang.Object

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

Field Detail

expressionMap

private Map<String,NowQueryExpression> expressionMap

state

private SelectionExpressionConverter.BuildState state

Constructor Detail

SelectionExpressionConverter

public SelectionExpressionConverter()

Method Detail

hasNow

private boolean hasNow(ExpressionNode node)

getQueryMap

public Map<String,String> getQueryMap()

visit

public void visit(ArithmeticNode node)

Specified by:

visit in interface Visitor

visit

public void visit(AttributeNode node)

Specified by:

visit in interface Visitor

visit

public void visit(ComparisonNode node)

Specified by:

visit in interface Visitor

visit

public void visit(DocumentNode node)

Specified by:

visit in interface Visitor

visit

public void visit(EmbracedNode node)

Specified by:

visit in interface Visitor

visit

public void visit(IdNode node)

Specified by:

visit in interface Visitor

visit

public void visit(LiteralNode node)

Specified by:

visit in interface Visitor

visit

public void visit(LogicNode node)

Specified by:

visit in interface Visitor

visit

public void visit(NegationNode node)

Specified by:

visit in interface Visitor

visit

public void visit(NowNode node)

Specified by:

visit in interface Visitor

visit

public void visit(SearchColumnNode node)

Specified by:

visit in interface Visitor

visit

public void visit(VariableNode node)

Specified by:

visit in interface Visitor