org.exist.xquery
Class AnalyzeContextInfo

java.lang.Object
  org.exist.xquery.AnalyzeContextInfo

public class AnalyzeContextInfo

extends java.lang.Object

Holds context information and execution hints for XQuery expressions. Instances of this class are passed to Expression.analyze(AnalyzeContextInfo) during the analysis phase of the query.

Author:

wolf

Constructor Summary

AnalyzeContextInfo()

AnalyzeContextInfo(AnalyzeContextInfo other)
Create a new object as a clone of other.

AnalyzeContextInfo(Expression parent, int flags)
Create a new AnalyzeContextInfo using the given parent and flags.

Method Summary

void	addFlag(int flag)
int	getContextId() Returns the current context id.
int	getFlags() Returns the processing flags.
Expression	getParent() Returns the parent of the current expression.
void	removeFlag(int flag)
void	setContextId(int contextId)
void	setFlags(int flags) Sets the processing flags to be passed to a child expression.
void	setParent(Expression parent)

Methods inherited from class java.lang.Object

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

Constructor Detail

AnalyzeContextInfo

public AnalyzeContextInfo()

AnalyzeContextInfo

public AnalyzeContextInfo(Expression parent,
                          int flags)

Create a new AnalyzeContextInfo using the given parent and flags.

Parameters:

parent - the parent expression which calls this method

flags - int value containing a set of flags. See the constants defined in this class.

AnalyzeContextInfo

public AnalyzeContextInfo(AnalyzeContextInfo other)

Create a new object as a clone of other.

Parameters:

other -

Method Detail

getContextId

public int getContextId()

Returns the current context id. The context id is used to keep track of the context node set within a predicate expression or where-clause. The id identifies the ancestor expression to which the context applies.

Returns:

setContextId

public void setContextId(int contextId)

getFlags

public int getFlags()

Returns the processing flags. Every expression may pass execution hints to its child expressions, encoded as bit flags.

Returns:

setFlags

public void setFlags(int flags)

Sets the processing flags to be passed to a child expression.

Parameters:

flags -

addFlag

public void addFlag(int flag)

removeFlag

public void removeFlag(int flag)

getParent

public Expression getParent()

Returns the parent of the current expression.

Returns:

setParent

public void setParent(Expression parent)