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java.lang.Objectorg.basex.query.ExprInfo
org.basex.query.xpath.expr.Expr
org.basex.query.xpath.internal.InternalExpr
org.basex.query.xpath.internal.Range
public final class Range
IndexRange, performing numeric range queries.
Constructor Summary | |
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Range(Expr e,
Item mn,
Item mx)
Constructor. |
Method Summary | |
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Bln |
eval(XPContext ctx)
Evaluates the expression with the specified context set. |
Expr |
indexEquivalent(XPContext ctx,
Step curr,
boolean seq)
Returns an equivalent expression which accesses an index structure. |
int |
indexSizes(XPContext ctx,
Step curr,
int mn)
Returns the number of results if this query is evaluated by an index. |
void |
plan(Serializer ser)
Recursively sends the abstract syntax of this expression to the specified serializer. |
java.lang.String |
toString()
|
Methods inherited from class org.basex.query.xpath.internal.InternalExpr |
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comp, usesPos, usesSize |
Methods inherited from class org.basex.query.xpath.expr.Expr |
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returnedValue, sameAs |
Methods inherited from class org.basex.query.ExprInfo |
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color, info, name |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public Range(Expr e, Item mn, Item mx)
e
- first expressionmn
- minimum valuemx
- maximum valueMethod Detail |
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public Bln eval(XPContext ctx) throws QueryException
Expr
eval
in class Expr
ctx
- query context
QueryException
- evaluation exceptionpublic Expr indexEquivalent(XPContext ctx, Step curr, boolean seq)
Expr
indexEquivalent
in class Expr
ctx
- rootcurr
- location stepseq
- flag for sequential evaluation
public int indexSizes(XPContext ctx, Step curr, int mn)
Expr
Integer.MAX_VALUE
is returned, no index access is possible.
indexSizes
in class Expr
ctx
- rootcurr
- the current location stepmn
- current minimum index hits
public void plan(Serializer ser) throws java.io.IOException
ExprInfo
plan
in class ExprInfo
ser
- serializer
java.io.IOException
- exceptionpublic java.lang.String toString()
toString
in class ExprInfo
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