RuleSearchState

java.lang.Object
- net.sf.saxon.trans.rules.RuleSearchState

Direct Known Subclasses:

PreconditionMatcher
```
public class RuleSearchState
extends java.lang.Object
```
A simple class for holding stateful details of a rule search operation This is a dummy implementation for Saxon-HE which does not optimize searching a rule chain. It is subclassed for Saxon-EE.

Constructor Summary

Constructors
Modifier Constructor Description

protected RuleSearchState()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`checkPreconditions(Rule rule)`	Use this search state to check whether the preconditions for a particular rule are satisfied
`static RuleSearchState`	`getInstance()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RuleSearchState
```
protected RuleSearchState()
```
- Method Detail
  - getInstance
```
public static RuleSearchState getInstance()
```
  - checkPreconditions
```
public boolean checkPreconditions(Rule rule)
                           throws XPathException
```
    Use this search state to check whether the preconditions for a particular rule are satisfied
    
    Parameters:
    
    rule - the rule being tested
    
    Returns:
    
    true if all preconditions are satisfied; in the HE implementation, there are no preconditions, so this is always true.
    
    Throws:
    
    XPathException - (in a subclass) if evaluation of preconditions fails.