| /* |
| * 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.jasper.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.PropertyNotFoundException; |
| import javax.el.PropertyNotWritableException; |
| import javax.el.ValueExpression; |
| |
| /** |
| * Wrapper for providing context to ValueExpressions |
| * |
| * @author Jacob Hookom |
| */ |
| public final class JspValueExpression extends ValueExpression implements |
| Externalizable { |
| |
| private ValueExpression target; |
| |
| private String mark; |
| |
| public JspValueExpression() { |
| super(); |
| } |
| |
| public JspValueExpression(String mark, ValueExpression target) { |
| this.target = target; |
| this.mark = mark; |
| } |
| |
| @Override |
| public Class<?> getExpectedType() { |
| return this.target.getExpectedType(); |
| } |
| |
| @Override |
| public Class<?> getType(ELContext context) throws NullPointerException, |
| PropertyNotFoundException, ELException { |
| context.notifyBeforeEvaluation(getExpressionString()); |
| try { |
| Class<?> result = this.target.getType(context); |
| context.notifyAfterEvaluation(getExpressionString()); |
| return result; |
| } catch (PropertyNotFoundException e) { |
| if (e instanceof JspPropertyNotFoundException) throw e; |
| throw new JspPropertyNotFoundException(this.mark, e); |
| } catch (ELException e) { |
| if (e instanceof JspELException) throw e; |
| throw new JspELException(this.mark, e); |
| } |
| } |
| |
| @Override |
| public boolean isReadOnly(ELContext context) throws NullPointerException, |
| PropertyNotFoundException, ELException { |
| context.notifyBeforeEvaluation(getExpressionString()); |
| try { |
| boolean result = this.target.isReadOnly(context); |
| context.notifyAfterEvaluation(getExpressionString()); |
| return result; |
| } catch (PropertyNotFoundException e) { |
| if (e instanceof JspPropertyNotFoundException) throw e; |
| throw new JspPropertyNotFoundException(this.mark, e); |
| } catch (ELException e) { |
| if (e instanceof JspELException) throw e; |
| throw new JspELException(this.mark, e); |
| } |
| } |
| |
| @Override |
| public void setValue(ELContext context, Object value) |
| throws NullPointerException, PropertyNotFoundException, |
| PropertyNotWritableException, ELException { |
| context.notifyBeforeEvaluation(getExpressionString()); |
| try { |
| this.target.setValue(context, value); |
| context.notifyAfterEvaluation(getExpressionString()); |
| } catch (PropertyNotWritableException e) { |
| if (e instanceof JspPropertyNotWritableException) throw e; |
| throw new JspPropertyNotWritableException(this.mark, e); |
| } catch (PropertyNotFoundException e) { |
| if (e instanceof JspPropertyNotFoundException) throw e; |
| throw new JspPropertyNotFoundException(this.mark, e); |
| } catch (ELException e) { |
| if (e instanceof JspELException) throw e; |
| throw new JspELException(this.mark, e); |
| } |
| } |
| |
| @Override |
| public Object getValue(ELContext context) throws NullPointerException, |
| PropertyNotFoundException, ELException { |
| context.notifyBeforeEvaluation(getExpressionString()); |
| try { |
| Object result = this.target.getValue(context); |
| context.notifyAfterEvaluation(getExpressionString()); |
| return result; |
| } catch (PropertyNotFoundException e) { |
| if (e instanceof JspPropertyNotFoundException) throw e; |
| throw new JspPropertyNotFoundException(this.mark, e); |
| } catch (ELException e) { |
| if (e instanceof JspELException) throw e; |
| throw new JspELException(this.mark, e); |
| } |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| return this.target.equals(obj); |
| } |
| |
| @Override |
| public int hashCode() { |
| return this.target.hashCode(); |
| } |
| |
| @Override |
| public String getExpressionString() { |
| return this.target.getExpressionString(); |
| } |
| |
| @Override |
| public boolean isLiteralText() { |
| return this.target.isLiteralText(); |
| } |
| |
| @Override |
| public void writeExternal(ObjectOutput out) throws IOException { |
| out.writeUTF(this.mark); |
| out.writeObject(this.target); |
| } |
| |
| @Override |
| public void readExternal(ObjectInput in) throws IOException, |
| ClassNotFoundException { |
| this.mark = in.readUTF(); |
| this.target = (ValueExpression) in.readObject(); |
| } |
| } |