| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| package org.apache.struts2.el; |
| |
| import java.io.Externalizable; |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| |
| import javax.el.ELContext; |
| import javax.el.ELException; |
| import javax.el.MethodExpression; |
| import javax.el.MethodInfo; |
| |
| import org.apache.struts2.el.lang.ELSupport; |
| import org.apache.struts2.el.util.ReflectionUtil; |
| |
| public class MethodExpressionLiteral extends MethodExpression implements Externalizable { |
| |
| private Class expectedType; |
| |
| private String expr; |
| |
| private Class[] paramTypes; |
| |
| public MethodExpressionLiteral() { |
| // do nothing |
| } |
| |
| public MethodExpressionLiteral(String expr, Class expectedType, Class[] paramTypes) { |
| this.expr = expr; |
| this.expectedType = expectedType; |
| this.paramTypes = paramTypes; |
| } |
| |
| public MethodInfo getMethodInfo(ELContext context) throws ELException { |
| return new MethodInfo(this.expr, this.expectedType, this.paramTypes); |
| } |
| |
| public Object invoke(ELContext context, Object[] params) throws ELException { |
| if (this.expectedType != null) { |
| return ELSupport.coerceToType(this.expr, this.expectedType); |
| } else { |
| return this.expr; |
| } |
| } |
| |
| public String getExpressionString() { |
| return this.expr; |
| } |
| |
| public boolean equals(Object obj) { |
| return (obj instanceof MethodExpressionLiteral && this.hashCode() == obj.hashCode()); |
| } |
| |
| public int hashCode() { |
| return this.expr.hashCode(); |
| } |
| |
| public boolean isLiteralText() { |
| return true; |
| } |
| |
| public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { |
| this.expr = in.readUTF(); |
| String type = in.readUTF(); |
| if (!"".equals(type)) { |
| this.expectedType = ReflectionUtil.forName(type); |
| } |
| this.paramTypes = ReflectionUtil.toTypeArray(((String[]) in |
| .readObject())); |
| } |
| |
| public void writeExternal(ObjectOutput out) throws IOException { |
| out.writeUTF(this.expr); |
| out.writeUTF((this.expectedType != null) ? this.expectedType.getName() |
| : ""); |
| out.writeObject(ReflectionUtil.toTypeNameArray(this.paramTypes)); |
| } |
| } |