Examples of javax.el.PropertyNotWritableException

javax.el.PropertyNotWritableException
Thrown when a property could not be written to while setting the value on a {@link ValueExpression}.
For example, this could be triggered by trying to set a map value on an unmodifiable map.
@since JSP 2.1

                }
                return null;
            }
            @Override
            public ValueExpression setVariable(String variable, ValueExpression expression) {
                throw new PropertyNotWritableException();
            }

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            return true;
        }


        @Override
        public void setValue(ELContext context, Object value) {
            throw new PropertyNotWritableException();
        }

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            if (context == null) {
                throw new NullPointerException();
            }
            if (base != null && base instanceof List) {
                if (isReadOnly) {
                    throw new PropertyNotWritableException();
                }
                String str = property.toString();
                if ("add".equals(str)) {
                    if (Debug.verboseOn()) {
                        Debug.logVerbose("ExtendedListResolver.setValue adding List element: base = " + base + ", property = " + property + ", value = " + val, module);
                    }
                    context.setPropertyResolved(true);
                    List list = (List) base;
                    list.add(val);
                } else if (str.startsWith("insert@")) {
                    if (Debug.verboseOn()) {
                        Debug.logVerbose("ExtendedListResolver.setValue inserting List element: base = " + base + ", property = " + property + ", value = " + val, module);
                    }
                    context.setPropertyResolved(true);
                    String indexStr = str.replace("insert@", "");
                    int index = Integer.parseInt(indexStr);
                    List list = (List) base;
                    try {
                        list.add(index, val);
                    } catch (UnsupportedOperationException ex) {
                        throw new PropertyNotWritableException();
                    } catch (IndexOutOfBoundsException ex) {
                        throw new PropertyNotFoundException();
                    }
                } else {
                    super.setValue(context, base, property, val);

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      {
        try
        {
          // If exception not thrown then we had a hit
          Enum.valueOf(BRIDGE_IMPLICT_OBJECTS_ENUM.class, (String) property);
          throw new PropertyNotWritableException((String) property);
        }
        catch (IllegalArgumentException e)
        {
          ; // do nothing
        }

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  }


  @Override
  public void setValue(ELContext context, Object value)
  {
    throw new PropertyNotWritableException();
  }

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  }


  @Override
  public void setValue(ELContext context, Object value)
  {
    throw new PropertyNotWritableException();
  }

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        if (base == null && property != null) {
            int idx = Arrays.binarySearch(SCOPE_NAMES, property.toString());
            if (idx >= 0) {
                context.setPropertyResolved(true);
                throw new PropertyNotWritableException();
            }
        }
    }

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        return this.value;
    }


    @Override
    public void setValue(ELContext context, Object value) {
        throw new PropertyNotWritableException(MessageFactory.get(
                "error.value.literal.write", this.value));
    }

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      return _o;
    }


    public void setValue(ELContext context, Object value)
    {
      throw new PropertyNotWritableException();
    }

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        if (base == null && property != null) {
            int idx = Arrays.binarySearch(SCOPE_NAMES, property.toString());
            if (idx >= 0) {
                context.setPropertyResolved(true);
                throw new PropertyNotWritableException();
            }
        }
    }

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