ch.ethz.mxquery.model
Class VariableHolder

java.lang.Object
  ch.ethz.mxquery.model.VariableHolder

public class VariableHolder
extends java.lang.Object

Constructor Summary

VariableHolder(Context ctx, boolean external)

VariableHolder(Context ctx, XDMIterator iter)

VariableHolder(Context ctx, XDMIterator iter, boolean external)

Method Summary

VariableHolder	copy(Context context, java.util.Vector nestedPredCtxStack)
void	destroyVariable()
XQStaticContext	getContext()
XDMIterator	getIter()
TypeInfo	getType()
int	getUsage()
void	incUseCounter()
boolean	isAssignable()
boolean	isDeclared()
boolean	isExternal()
boolean	isResetable()
boolean	isUpdatable()
boolean	needsMaterialization() This is a conservative, because there are cases where it can be reseted and nevertheless no materialization is needed.
void	setAssignable(boolean assignable)
void	setDeclared()
void	setIter(XDMIterator iter)
void	setResetable(boolean resetable)
void	setSeqTypeIt(XDMIterator seqTypeIt)
void	setUpdatable(boolean updatable)
void	setUseCounter(int c)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VariableHolder

public VariableHolder(Context ctx,
                      boolean external)

VariableHolder

public VariableHolder(Context ctx,
                      XDMIterator iter)

VariableHolder

public VariableHolder(Context ctx,
                      XDMIterator iter,
                      boolean external)

Method Detail

setSeqTypeIt

public void setSeqTypeIt(XDMIterator seqTypeIt)
                  throws MXQueryException

Throws:

MXQueryException

setIter

public void setIter(XDMIterator iter)
             throws MXQueryException

Throws:

MXQueryException

isAssignable

public boolean isAssignable()

setAssignable

public void setAssignable(boolean assignable)

isUpdatable

public boolean isUpdatable()

setUpdatable

public void setUpdatable(boolean updatable)

getType

public TypeInfo getType()

getIter

public XDMIterator getIter()

isExternal

public boolean isExternal()

incUseCounter

public void incUseCounter()

setUseCounter

public void setUseCounter(int c)

getUsage

public int getUsage()

isDeclared

public boolean isDeclared()

setDeclared

public void setDeclared()

isResetable

public boolean isResetable()

setResetable

public void setResetable(boolean resetable)
                  throws MXQueryException

Throws:

MXQueryException

destroyVariable

public void destroyVariable()

needsMaterialization

public boolean needsMaterialization()

This is a conservative, because there are cases where it can be reseted and nevertheless no materialization is needed.

Returns:

true if materialization is needed

copy

public VariableHolder copy(Context context,
                           java.util.Vector nestedPredCtxStack)
                    throws MXQueryException

Throws:

MXQueryException

getContext

public XQStaticContext getContext()