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java.lang.Objectorg.basex.query.ExprInfo
org.basex.query.xpath.expr.Expr
org.basex.query.xpath.expr.Pos
public final class Pos
Position test.
Field Summary | |
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int |
max
Maximum value. |
int |
min
Minimum value. |
Constructor Summary | |
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Pos(int p)
Constructor. |
|
Pos(int mn,
int mx)
Constructor. |
Method Summary | |
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Expr |
comp(XPContext ctx)
Optimizes the expression. |
static Expr |
create(double val,
Comp type)
Creates a position predicate, a false predicate for impossible comparisons or a null reference. |
Bln |
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()
|
boolean |
usesPos()
Checks whether this Expression (or its children) make use of the position parameter. |
boolean |
usesSize()
Checks whether this Expression (or its children) make use of the setsize parameter. |
Methods inherited from class org.basex.query.xpath.expr.Expr |
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indexEquivalent, indexSizes, 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 |
Field Detail |
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public int min
public int max
Constructor Detail |
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public Pos(int p)
p
- positionpublic Pos(int mn, int mx)
mn
- minimummx
- maximumMethod Detail |
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public static Expr create(double val, Comp type)
null
reference.
val
- position valuetype
- comparison type
public Expr comp(XPContext ctx)
Expr
comp
in class Expr
ctx
- expression context
public Bln eval(XPContext ctx) throws QueryException
Expr
eval
in class Expr
ctx
- query context
QueryException
- evaluation exceptionpublic boolean usesPos()
Expr
usesPos
in class Expr
public boolean usesSize()
Expr
usesSize
in class Expr
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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