org.basex.query.value.item
Class AStr

java.lang.Object
  extended by org.basex.data.ExprInfo
      extended by org.basex.query.expr.Expr
          extended by org.basex.query.value.Value
              extended by org.basex.query.value.item.Item
                  extended by org.basex.query.value.item.AStr
All Implemented Interfaces:
java.lang.Iterable<Item>
Direct Known Subclasses:
Str, StrStream

public abstract class AStr
extends Item

Abstract string item.

Author:
BaseX Team 2005-12, BSD License, Christian Gruen

Nested Class Summary
 
Nested classes/interfaces inherited from class org.basex.query.expr.Expr
Expr.Flag
 
Field Summary
 
Fields inherited from class org.basex.query.value.item.Item
score, UNDEF
 
Fields inherited from class org.basex.query.value.Value
type
 
Constructor Summary
protected AStr()
          Constructor.
protected AStr(AtomType t)
          Constructor, specifying a type.
 
Method Summary
 boolean bool(InputInfo ii)
          Returns a boolean representation of the value.
 int diff(Item it, Collation coll, InputInfo ii)
          Returns the difference between the current and the specified item.
 boolean eq(Item it, Collation coll, InputInfo ii)
          Checks the items for equality.
 
Methods inherited from class org.basex.query.value.item.Item
castErr, comparable, dbl, dec, description, ebv, equiv, flt, hash, homogeneous, input, isItem, item, itemAt, iter, iterable, itr, materialize, plan, score, score, size, string, test, type, typeId, writeTo, xdmInfo
 
Methods inherited from class org.basex.query.value.Value
accept, cache, checkUp, compile, copy, count, data, exprSize, has, inline, isValue, iter, iterator, removable, serialize, toJava, value
 
Methods inherited from class org.basex.query.expr.Expr
addText, compEbv, copy, hasFreeVars, indexAccessible, indexEquivalent, inlineAll, isEmpty, isFunction, isVacuous, markTailCalls, optimize, sameAs, uses, visitAll
 
Methods inherited from class org.basex.data.ExprInfo
addPlan, addPlan, info, planAttr, planElem, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

AStr

protected AStr()
Constructor.


AStr

protected AStr(AtomType t)
Constructor, specifying a type.

Parameters:
t - atomic type
Method Detail

bool

public final boolean bool(InputInfo ii)
                   throws QueryException
Description copied from class: Item
Returns a boolean representation of the value.

Overrides:
bool in class Item
Parameters:
ii - input info
Returns:
boolean value
Throws:
QueryException - query exception

eq

public final boolean eq(Item it,
                        Collation coll,
                        InputInfo ii)
                 throws QueryException
Description copied from class: Item
Checks the items for equality.

Specified by:
eq in class Item
Parameters:
it - item to be compared
coll - collation
ii - input info
Returns:
result of check
Throws:
QueryException - query exception

diff

public final int diff(Item it,
                      Collation coll,
                      InputInfo ii)
               throws QueryException
Description copied from class: Item
Returns the difference between the current and the specified item.

Overrides:
diff in class Item
Parameters:
it - item to be compared
coll - query context
ii - input info
Returns:
difference
Throws:
QueryException - query exception