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package org.apache.myfaces.el.convert; |
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import javax.el.ELException; |
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import javax.el.ValueExpression; |
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import javax.faces.component.StateHolder; |
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import javax.faces.context.FacesContext; |
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import javax.faces.el.EvaluationException; |
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import javax.faces.el.PropertyNotFoundException; |
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import javax.faces.el.ValueBinding; |
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import org.apache.myfaces.shared_impl.util.ClassUtils; |
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@SuppressWarnings("deprecation") |
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public class ValueExpressionToValueBinding extends ValueBinding implements StateHolder |
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{ |
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private ValueExpression _valueExpression; |
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|
45 | 0 | private boolean isTransient = false; |
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public ValueExpressionToValueBinding() |
49 | 0 | { |
50 | 0 | _valueExpression = null; |
51 | 0 | } |
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@Override |
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public int hashCode() |
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{ |
56 | 0 | int result = 1; |
57 | 0 | result = 31 * result + ((_valueExpression == null) ? 0 : _valueExpression.hashCode()); |
58 | 0 | result = 31 * result + (isTransient ? 1231 : 1237); |
59 | 0 | return result; |
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} |
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@Override |
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public boolean equals(Object obj) |
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{ |
65 | 0 | if (this == obj) |
66 | 0 | return true; |
67 | 0 | if (obj == null) |
68 | 0 | return false; |
69 | 0 | if (getClass() != obj.getClass()) |
70 | 0 | return false; |
71 | 0 | final ValueExpressionToValueBinding other = (ValueExpressionToValueBinding) obj; |
72 | 0 | if (_valueExpression == null) |
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{ |
74 | 0 | if (other._valueExpression != null) |
75 | 0 | return false; |
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} |
77 | 0 | else if (!_valueExpression.equals(other._valueExpression)) |
78 | 0 | return false; |
79 | 0 | if (isTransient != other.isTransient) |
80 | 0 | return false; |
81 | 0 | return true; |
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} |
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public ValueExpression getValueExpression() |
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{ |
89 | 0 | return getNotNullValueExpression(); |
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} |
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private ValueExpression getNotNullValueExpression() |
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{ |
97 | 0 | if (_valueExpression == null) |
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{ |
99 | 0 | throw new IllegalStateException("value expression is null"); |
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} |
101 | 0 | return _valueExpression; |
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} |
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@Override |
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public String getExpressionString() |
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{ |
107 | 0 | return getNotNullValueExpression().getExpressionString(); |
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} |
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public ValueExpressionToValueBinding(ValueExpression valueExpression) |
112 | 0 | { |
113 | 0 | if (valueExpression == null) |
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{ |
115 | 0 | throw new IllegalArgumentException("value expression must not be null."); |
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} |
117 | 0 | _valueExpression = valueExpression; |
118 | 0 | } |
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@Override |
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public void setValue(FacesContext facesContext, Object value) throws EvaluationException, PropertyNotFoundException |
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{ |
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try |
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{ |
125 | 0 | getNotNullValueExpression().setValue(facesContext.getELContext(), value); |
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} |
127 | 0 | catch (javax.el.PropertyNotFoundException e) |
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{ |
129 | 0 | throw new javax.faces.el.PropertyNotFoundException(e); |
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} |
131 | 0 | catch (ELException e) |
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{ |
133 | 0 | throw new EvaluationException(e); |
134 | 0 | } |
135 | 0 | } |
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@Override |
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public boolean isReadOnly(FacesContext facesContext) throws EvaluationException, PropertyNotFoundException |
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{ |
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try |
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{ |
143 | 0 | return getNotNullValueExpression().isReadOnly(facesContext.getELContext()); |
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} |
145 | 0 | catch (javax.el.PropertyNotFoundException e) |
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{ |
147 | 0 | throw new javax.faces.el.PropertyNotFoundException(e); |
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} |
149 | 0 | catch (ELException e) |
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{ |
151 | 0 | throw new EvaluationException(e); |
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} |
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} |
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@Override |
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public Object getValue(FacesContext facesContext) throws EvaluationException, PropertyNotFoundException |
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{ |
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try |
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{ |
161 | 0 | return getNotNullValueExpression().getValue(facesContext.getELContext()); |
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} |
163 | 0 | catch (javax.el.PropertyNotFoundException e) |
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{ |
165 | 0 | throw new javax.faces.el.PropertyNotFoundException(e); |
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} |
167 | 0 | catch (ELException e) |
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{ |
169 | 0 | throw new EvaluationException(e); |
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} |
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} |
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@Override |
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public Class getType(FacesContext facesContext) throws EvaluationException, PropertyNotFoundException |
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{ |
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try |
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{ |
178 | 0 | return getNotNullValueExpression().getType(facesContext.getELContext()); |
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} |
180 | 0 | catch (javax.el.PropertyNotFoundException e) |
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{ |
182 | 0 | throw new javax.faces.el.PropertyNotFoundException(e); |
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} |
184 | 0 | catch (ELException e) |
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{ |
186 | 0 | throw new EvaluationException(e); |
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} |
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} |
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public void restoreState(FacesContext facesContext, Object state) |
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{ |
194 | 0 | if (state != null) |
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{ |
196 | 0 | if (state instanceof ValueExpression) |
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{ |
198 | 0 | _valueExpression = (ValueExpression) state; |
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} |
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else |
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{ |
202 | 0 | Object[] stateArray = (Object[]) state; |
203 | 0 | _valueExpression = (ValueExpression) ClassUtils.newInstance((String) stateArray[0], |
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ValueExpression.class); |
205 | 0 | ((StateHolder) _valueExpression).restoreState(facesContext, stateArray[1]); |
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} |
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} |
208 | 0 | } |
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public Object saveState(FacesContext context) |
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{ |
212 | 0 | if (!isTransient) |
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{ |
214 | 0 | if (_valueExpression instanceof StateHolder) |
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{ |
216 | 0 | Object[] state = new Object[2]; |
217 | 0 | state[0] = _valueExpression.getClass().getName(); |
218 | 0 | state[1] = ((StateHolder) _valueExpression).saveState(context); |
219 | 0 | return state; |
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} |
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else |
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{ |
223 | 0 | return _valueExpression; |
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} |
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} |
226 | 0 | return null; |
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} |
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public void setTransient(boolean newTransientValue) |
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{ |
231 | 0 | isTransient = newTransientValue; |
232 | 0 | } |
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public boolean isTransient() |
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{ |
236 | 0 | return isTransient; |
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} |
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} |