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 Sring instnce 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 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 parse(java.lang.String expr)
Parses an expression into a list of fragments. Each of them is either a Sring instnce 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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