File	Doc	Category	Size	Date	Package
Expression.java	API Doc	Glassfish v2 API	4972	Fri Feb 17 14:04:52 GMT 2006	javax.el

Expression

• java.lang.Object

Fields Summary

Constructors Summary

Methods Summary
public abstract boolean	equals(java.lang.Object obj) Determines whether the specified object is equal to this Expression. The result is true if and only if the argument is not null, is an Expression object that is the of the same type (ValueExpression or MethodExpression), and has an identical parsed representation. Note that two expressions can be equal if their expression Strings are different. For example, ${fn1:foo()} and ${fn2:foo()} are equal if their corresponding FunctionMappers mapped fn1:foo and fn2:foo to the same method. param obj the Object to test for equality. return true if obj equals this Expression; false otherwise. see java.util.Hashtable see java.lang.Object#equals(java.lang.Object)
public abstract java.lang.String	getExpressionString() Returns the original String used to create this Expression, unmodified. This is used for debugging purposes but also for the purposes of comparison (e.g. to ensure the expression in a configuration file has not changed). This method does not provide sufficient information to re-create an expression. Two different expressions can have exactly the same expression string but different function mappings. Serialization should be used to save and restore the state of an Expression. return The original expression String.
public abstract int	hashCode() Returns the hash code for this Expression. See the note in the {@link #equals} method on how two expressions can be equal if their expression Strings are different. Recall that if two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result. Implementations must take special note and implement hashCode correctly. return The hash code for this Expression. see #equals see java.util.Hashtable see java.lang.Object#hashCode()
public abstract boolean	isLiteralText() Returns whether this expression was created from only literal text. This method must return true if and only if the expression string this expression was created from contained no unescaped EL delimeters (${...} or #{...}). return true if this expression was created from only literal text; false otherwise.