org.zkoss.zkmax.xel.util
Class ExpressionFragment

java.lang.Object
  extended by org.zkoss.zkmax.xel.util.ExpressionFragment
All Implemented Interfaces:
java.io.Serializable

public class ExpressionFragment
extends java.lang.Object
implements java.io.Serializable

Represents an expression fragment of an expression. When parse(java.lang.String) is called, a list of fragments is returned. Each of them is either a Spring instance or a ExpressionFragment instance.

Available in ZK EE

For example, "ab${x + y}cd${z}" is broken into the following segments, when parse(java.lang.String) is called:
String("ab"), ExpressionFragment("x+y"), String("cd") and ExpressionFragment("z").

It is used to implement ExpressionFactory based on an evaluator that doesn't support the syntax of ${expr}. The users of XEL expressions rarely needs to use this class.

Since:
3.0.0
Author:
tomyeh
See Also:
Serialized Form

Method Summary
 boolean equals(java.lang.Object o)
           
 java.lang.String getExpression()
          Returns the expression.
 int hashCode()
           
static java.util.List<java.lang.Object> parse(java.lang.String expr)
          Parses an expression into a list of fragments.
 java.lang.String toString()
           
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Method Detail

parse

public static final java.util.List<java.lang.Object> parse(java.lang.String expr)
Parses an expression into a list of fragments. Each of them is either a Spring instance or a ExpressionFragment instance.

For example, "ab${x + y}cd${z}" is broken into the following segments, when parse(java.lang.String) is called:
String("ab"), ExpressionFragment("x+y"), String("cd") and ExpressionFragment("z").

Parameters:
expr - the expression that may or may not contain one or multiple ${expr}. It cannot be null.

getExpression

public java.lang.String getExpression()
Returns the expression.


hashCode

public int hashCode()
Overrides:
hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object o)
Overrides:
equals in class java.lang.Object

toString

public java.lang.String toString()
Overrides:
toString in class java.lang.Object


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