| /* |
| * 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 javax.faces.component; |
| |
| import javax.el.ELException; |
| import javax.el.ValueExpression; |
| import javax.faces.context.FacesContext; |
| import javax.faces.el.EvaluationException; |
| import javax.faces.el.PropertyNotFoundException; |
| import javax.faces.el.ValueBinding; |
| |
| /** |
| * Converter for legacy ValueBinding objects. See JSF 1.2 section 5.8.3 |
| * |
| * ATTENTION: If you make changes to this class, treat javax.faces.component.ValueExpressionToValueBinding accordingly. |
| * |
| * @author Stan Silvert |
| * @see javax.faces.component.ValueExpressionToValueBinding |
| */ |
| @SuppressWarnings("deprecation") |
| class _ValueExpressionToValueBinding extends ValueBinding implements StateHolder |
| { |
| |
| private ValueExpression _valueExpression; |
| |
| private boolean isTransient = false; |
| |
| // required no-arg constructor for StateHolder |
| protected _ValueExpressionToValueBinding() |
| { |
| _valueExpression = null; |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| final int PRIME = 31; |
| int result = 1; |
| result = PRIME * result + ((_valueExpression == null) ? 0 : _valueExpression.hashCode()); |
| result = PRIME * result + (isTransient ? 1231 : 1237); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) |
| { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| final _ValueExpressionToValueBinding other = (_ValueExpressionToValueBinding) obj; |
| if (_valueExpression == null) |
| { |
| if (other._valueExpression != null) |
| return false; |
| } |
| else if (!_valueExpression.equals(other._valueExpression)) |
| return false; |
| if (isTransient != other.isTransient) |
| return false; |
| return true; |
| } |
| |
| /** |
| * @return the valueExpression |
| */ |
| public ValueExpression getValueExpression() |
| { |
| return getNotNullValueExpression(); |
| } |
| |
| /** |
| * @return the valueExpression |
| */ |
| private ValueExpression getNotNullValueExpression() |
| { |
| if (_valueExpression == null) |
| { |
| throw new IllegalStateException("value expression is null"); |
| } |
| return _valueExpression; |
| } |
| |
| @Override |
| public String getExpressionString() |
| { |
| return getNotNullValueExpression().getExpressionString(); |
| } |
| |
| /** Creates a new instance of ValueExpressionToValueBinding */ |
| public _ValueExpressionToValueBinding(ValueExpression valueExpression) |
| { |
| if (valueExpression == null) |
| { |
| throw new IllegalArgumentException("value expression must not be null."); |
| } |
| _valueExpression = valueExpression; |
| } |
| |
| @Override |
| public void setValue(FacesContext facesContext, Object value) throws EvaluationException, PropertyNotFoundException |
| { |
| try |
| { |
| getNotNullValueExpression().setValue(facesContext.getELContext(), value); |
| } |
| catch (javax.el.PropertyNotFoundException e) |
| { |
| throw new javax.faces.el.PropertyNotFoundException(e); |
| } |
| catch (ELException e) |
| { |
| throw new EvaluationException(e); |
| } |
| } |
| |
| @Override |
| public boolean isReadOnly(FacesContext facesContext) throws EvaluationException, PropertyNotFoundException |
| { |
| |
| try |
| { |
| return getNotNullValueExpression().isReadOnly(facesContext.getELContext()); |
| } |
| catch (javax.el.PropertyNotFoundException e) |
| { |
| throw new javax.faces.el.PropertyNotFoundException(e); |
| } |
| catch (ELException e) |
| { |
| throw new EvaluationException(e); |
| } |
| |
| } |
| |
| @Override |
| public Object getValue(FacesContext facesContext) throws EvaluationException, PropertyNotFoundException |
| { |
| try |
| { |
| return getNotNullValueExpression().getValue(facesContext.getELContext()); |
| } |
| catch (javax.el.PropertyNotFoundException e) |
| { |
| throw new javax.faces.el.PropertyNotFoundException(e); |
| } |
| catch (ELException e) |
| { |
| throw new EvaluationException(e); |
| } |
| } |
| |
| @Override |
| public Class getType(FacesContext facesContext) throws EvaluationException, PropertyNotFoundException |
| { |
| try |
| { |
| return getNotNullValueExpression().getType(facesContext.getELContext()); |
| } |
| catch (javax.el.PropertyNotFoundException e) |
| { |
| throw new javax.faces.el.PropertyNotFoundException(e); |
| } |
| catch (ELException e) |
| { |
| throw new EvaluationException(e); |
| } |
| } |
| |
| // -------- StateHolder methods ------------------------------------------- |
| |
| public void restoreState(FacesContext facesContext, Object state) |
| { |
| if (state != null) |
| { |
| if (state instanceof ValueExpression) |
| { |
| _valueExpression = (ValueExpression) state; |
| } |
| else |
| { |
| Object[] stateArray = (Object[]) state; |
| _valueExpression = (ValueExpression) _ClassUtils.newInstance((String) stateArray[0], |
| ValueExpression.class); |
| ((StateHolder) _valueExpression).restoreState(facesContext, stateArray[1]); |
| } |
| } |
| } |
| |
| public Object saveState(FacesContext context) |
| { |
| if (!isTransient) |
| { |
| if (_valueExpression instanceof StateHolder) |
| { |
| Object[] state = new Object[2]; |
| state[0] = _valueExpression.getClass().getName(); |
| state[1] = ((StateHolder) _valueExpression).saveState(context); |
| return state; |
| } |
| else |
| { |
| return _valueExpression; |
| } |
| } |
| return null; |
| } |
| |
| public void setTransient(boolean newTransientValue) |
| { |
| isTransient = newTransientValue; |
| } |
| |
| public boolean isTransient() |
| { |
| return isTransient; |
| } |
| |
| } |