Class ExpressionUtils

java.lang.Object

org.apache.el.util.ExpressionUtils

public final class ExpressionUtils
extends Object

Compares expression trees using their captured function mappings. Parsed nodes are shared between expressions, so function mappings must be considered separately rather than stored on the nodes.

Method Summary

Modifier and Type	Method	Description
static boolean	equals(org.apache.el.parser.Node first, FunctionMapper firstMapper, org.apache.el.parser.Node second, FunctionMapper secondMapper)	Compare parsed expressions and the functions they reference.
static int	hashCode(org.apache.el.parser.Node node, FunctionMapper mapper)	Hash a parsed expression and the functions it references.

Methods inherited from class Object

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

Method Details

equals

public static boolean equals(org.apache.el.parser.Node first,
 FunctionMapper firstMapper,
 org.apache.el.parser.Node second,
 FunctionMapper secondMapper)

Compare parsed expressions and the functions they reference.

Parameters:

first - First expression tree

firstMapper - First expression's captured function mapper

second - Second expression tree

secondMapper - Second expression's captured function mapper

Returns:

true if the expressions have identical parsed representations and function mappings

hashCode

public static int hashCode(org.apache.el.parser.Node node,
 FunctionMapper mapper)

Hash a parsed expression and the functions it references.

Parameters:

node - Expression tree

mapper - Expression's captured function mapper

Returns:

Hash consistent with function-aware expression equality