org.basex.query.value.item

Class Jav

java.lang.Object

org.basex.query.expr.ExprInfo

org.basex.query.expr.Expr

org.basex.query.value.Value

org.basex.query.value.item.Item

org.basex.query.value.item.Jav

All Implemented Interfaces:

Iterable<Item>

public final class Jav
extends Item

Java item.

Author:

BaseX Team 2005-21, BSD License, Christian Gruen

Field Summary

Fields inherited from class org.basex.query.value.item.Item

UNDEF

Fields inherited from class org.basex.query.value.Value

type

Constructor Summary

Constructors

Constructor and Description
Jav(Object value, QueryContext qc) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	bool(InputInfo ii) Returns a boolean representation of the value.
int	diff(Item item, Collation coll, InputInfo ii) Returns the difference between the current and the specified item.
boolean	eq(Item item, Collation coll, StaticContext sc, InputInfo ii) Compares the items for equality.
boolean	equals(Object obj) This function is e.g.
void	plan(QueryString qs) Creates a query string.
boolean	sameKey(Item item, InputInfo ii) Compares the items for equality.
byte[]	string(InputInfo ii) Returns a string representation of the value.
Object	toJava() Returns a Java representation of the value.

Methods inherited from class org.basex.query.value.item.Item

atomItem, atomSize, atomValue, cache, comparable, dbl, ddo, dec, description, ebv, equiv, flt, hash, input, instanceOf, item, itemAt, iter, itr, materialize, persistent, plan, refineType, reverse, score, seqType, size, subsequence, test, typeId, xdmInfo

Methods inherited from class org.basex.query.value.Value

accept, checkUp, compile, copy, count, exprSize, has, inline, inlineable, isEmpty, isItem, iter, iterator, materialize, serialize, serialize, serialize, value

Methods inherited from class org.basex.query.expr.Expr

arg, args, atomIter, data, data, funcType, hasFreeVars, indexAccessible, isSimple, markTailCalls, mergeEbv, optimize, simplifyFor, typeCheck, uses, vacuous, visitAll

Methods inherited from class org.basex.query.expr.ExprInfo

toErrorString, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

Jav

public Jav(Object value,
           QueryContext qc)

Constructor.

Parameters:

value - value

qc - query context

Method Detail

string

public byte[] string(InputInfo ii)
              throws QueryException

Description copied from class: Item

Returns a string representation of the value.

Specified by:

string in class Item

Parameters:

ii - input info (can be null)

Returns:

string value

Throws:

QueryException - if the item cannot be atomized (caused by function or streaming items)

bool

public boolean bool(InputInfo ii)

Description copied from class: Item

Returns a boolean representation of the value.

Overrides:

bool in class Item

Parameters:

ii - input info (can be null)

Returns:

boolean value

eq

public boolean eq(Item item,
                  Collation coll,
                  StaticContext sc,
                  InputInfo ii)
           throws QueryException

Description copied from class: Item

Compares the items for equality.

Specified by:

eq in class Item

Parameters:

item - item to be compared

coll - collation (can be null)

sc - static context; required for comparing items of type xs:QName (can be null)

ii - input info (can be null)

Returns:

result of check

Throws:

QueryException - query exception

sameKey

public boolean sameKey(Item item,
                       InputInfo ii)

Description copied from class: Item

Compares the items for equality.

Overrides:

sameKey in class Item

Parameters:

item - item to be compared

ii - input info (can be null)

Returns:

result of check

diff

public int diff(Item item,
                Collation coll,
                InputInfo ii)
         throws QueryException

Description copied from class: Item

Returns the difference between the current and the specified item. This function is overwritten by the corresponding implementations.

Overrides:

diff in class Item

Parameters:

item - item to be compared

coll - collation (can be null)

ii - input info (can be null)

Returns:

difference

Throws:

QueryException - query exception

toJava

public Object toJava()

Description copied from class: Value

Returns a Java representation of the value.

Specified by:

toJava in class Value

Returns:

Java object

equals

public boolean equals(Object obj)

Description copied from class: Expr

This function is e.g. called by:

• If.optimize(CompileContext), Switch.optimize(CompileContext), Typeswitch.optimize(CompileContext), in order to discard identical expressions.
• CmpR.mergeEbv(Expr, boolean, CompileContext) or CmpSR.mergeEbv(Expr, boolean, CompileContext), in order to merge expressions with identical input.
• CmpG.optimize(CompileContext) or CmpV.optimize(CompileContext), in order to pre-evaluate equality tests.
• CmpG.optimize(CompileContext) or Pos.get(Expr, CmpV.OpV, InputInfo, CompileContext), in order to compare the start and end value.
• PathCache, in order to find identical root values at runtime.

Specified by:

equals in class Expr

plan

public void plan(QueryString qs)

Description copied from class: ExprInfo

Creates a query string.

Specified by:

plan in class ExprInfo

Parameters:

qs - query string builder