org.basex.query.xpath.internal
Class IndexMatch
java.lang.Object
org.basex.query.ExprInfo
org.basex.query.xpath.expr.Expr
org.basex.query.xpath.internal.InternalExpr
org.basex.query.xpath.internal.IndexMatch
public final class IndexMatch
- extends InternalExpr
This class is only internally used for index optimizations.
- Author:
- Workgroup DBIS, University of Konstanz 2005-08, ISC License, Tim Petrowsky, Christian Gruen
Method Summary |
java.lang.String |
color()
Returns a string description of the expression. |
Nod |
eval(XPContext ctx)
Evaluates the expression with the specified context set. |
void |
plan(Serializer ser)
Recursively sends the abstract syntax of this expression to the
specified serializer. |
java.lang.String |
toString()
|
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
IndexMatch
public IndexMatch(LocPath p,
Expr exp,
LocPath m)
- Constructor.
- Parameters:
p
- input pathexp
- expression that uses the indexm
- matching path
eval
public Nod eval(XPContext ctx)
throws QueryException
- Description copied from class:
Expr
- Evaluates the expression with the specified context set. Additionally
provides a context
- Specified by:
eval
in class Expr
- Parameters:
ctx
- query context
- Returns:
- resulting XPathValue
- Throws:
QueryException
- evaluation exception
plan
public void plan(Serializer ser)
throws java.io.IOException
- Description copied from class:
ExprInfo
- Recursively sends the abstract syntax of this expression to the
specified serializer.
- Specified by:
plan
in class ExprInfo
- Parameters:
ser
- serializer
- Throws:
java.io.IOException
- exception
color
public java.lang.String color()
- Description copied from class:
ExprInfo
- Returns a string description of the expression. Contrary to the
ExprInfo.toString()
method, the current expressions aren't included
in the output.
- Overrides:
color
in class ExprInfo
- Returns:
- result of check
toString
public java.lang.String toString()
- Specified by:
toString
in class ExprInfo