#region License
/*
* Copyright 2002-2005 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
#region Imports
using System;
using System.Globalization;
using Spring.Expressions;
#endregion
namespace Spring.Objects.Factory.Config{
/// <summary>
/// Immutable placeholder class used for the value of a
/// <see cref="Spring.Objects.PropertyValue"/> object when it's a reference
/// to a Spring <see cref="IExpression"/> that should be evaluated at runtime.
/// </summary>
/// <author>Aleksandar Seovic</author>
[Serializable]
public class ExpressionHolder
{
#region Fields
private IExpression expression;
private string expressionString;
private MutablePropertyValues properties;
#endregion
#region Constructor (s) / Destructor
/// <summary>
/// Creates a new instance of the
/// <see cref="Spring.Objects.Factory.Config.ExpressionHolder"/>
/// class.
/// </summary>
/// <param name="expression">The expression to resolve.</param>
public ExpressionHolder(string expression)
{
expressionString = expression;
this.expression = Spring.Expressions.Expression.Parse(expression);
}
#endregion
#region Properties
/// <summary>
/// Gets or sets the expression string. Setting the expression string will cause
/// the expression to be parsed.
/// </summary>
/// <value>The expression string.</value>
public string ExpressionString
{
get { return expressionString; }
}
/// <summary>
/// Return the expression.
/// </summary>
public IExpression Expression
{
get { return expression; }
}
/// <summary>
/// Properties for this expression node.
/// </summary>
public MutablePropertyValues Properties
{
get { return properties; }
set { properties = value; }
}
#endregion
#region Methods
/// <summary>
/// Returns a string representation of this instance.
/// </summary>
/// <returns>A string representation of this instance.</returns>
public override string ToString()
{
return string.Format(
CultureInfo.InvariantCulture, "<{0}>", expressionString);
}
#endregion
}
}
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