com.metamatrix.query.sql.util
Class SymbolMap

java.lang.Object
  com.metamatrix.query.sql.util.SymbolMap

public class SymbolMap
extends java.lang.Object

Constructor Summary

SymbolMap()

Method Summary

boolean	addMapping(ElementSymbol symbol, Expression expression)
java.util.Map<ElementSymbol,Expression>	asMap()
static SymbolMap	createSymbolMap(GroupSymbol virtualGroup, java.util.List<? extends SingleElementSymbol> projectCols)
static SymbolMap	createSymbolMap(GroupSymbol virtualGroup, java.util.List<? extends SingleElementSymbol> projectCols, java.util.List<? extends SingleElementSymbol> mappedCols)
static SymbolMap	createSymbolMap(java.util.List<ElementSymbol> virtualElements, java.util.List<? extends Expression> mappedCols)
static Expression	getExpression(Expression symbol)
java.util.List<ElementSymbol>	getKeys()
Expression	getMappedExpression(ElementSymbol symbol)
java.util.List<Expression>	getValues()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

SymbolMap

public SymbolMap()

Method Detail

addMapping

public boolean addMapping(ElementSymbol symbol,
                          Expression expression)

Returns:

true if the map did not already contained the given symbol

getExpression

public static final Expression getExpression(Expression symbol)

getMappedExpression

public Expression getMappedExpression(ElementSymbol symbol)

asMap

public java.util.Map<ElementSymbol,Expression> asMap()

getKeys

public java.util.List<ElementSymbol> getKeys()

getValues

public java.util.List<Expression> getValues()

createSymbolMap

public static final SymbolMap createSymbolMap(GroupSymbol virtualGroup,
                                              java.util.List<? extends SingleElementSymbol> projectCols)

createSymbolMap

public static final SymbolMap createSymbolMap(GroupSymbol virtualGroup,
                                              java.util.List<? extends SingleElementSymbol> projectCols,
                                              java.util.List<? extends SingleElementSymbol> mappedCols)

createSymbolMap

public static final SymbolMap createSymbolMap(java.util.List<ElementSymbol> virtualElements,
                                              java.util.List<? extends Expression> mappedCols)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

Object.toString()