Package org.basex.query.expr

Class ExprInfo

java.lang.Object

org.basex.query.expr.ExprInfo

Direct Known Subclasses:

Expr, FTOpt, Pragma, StaticFuncs, StaticScope, Test, Var, Variables

public abstract class ExprInfo
extends Object

Expression information, used for debugging and logging.

Author:

BaseX Team 2005-21, BSD License, Christian Gruen

Constructor Summary

Constructors

Constructor	Description
ExprInfo()

Method Summary

Modifier and Type	Method	Description
String	description()	Returns a string description of the expression.
abstract void	plan(QueryPlan plan)	Creates a query plan.
abstract void	plan(QueryString qs)	Creates a query string.
String	toErrorString()	Returns a string representation of the expression that can be embedded in error messages.
final String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

ExprInfo

public ExprInfo()

Method Details

description

public String description()

Returns a string description of the expression. This method is only called by error messages. Contrary to the toString() method, arguments are not included in the output.

Returns:

result of check

plan

public abstract void plan(QueryPlan plan)

Creates a query plan.

Parameters:

plan - expression plan

plan

public abstract void plan(QueryString qs)

Creates a query string.

Parameters:

qs - query string builder

toErrorString

public String toErrorString()

Returns a string representation of the expression that can be embedded in error messages. Defaults to toString().

Returns:

class name

toString

public final String toString()

Overrides:

toString in class Object