Examples of org.springframework.beans.BeanWrapperImpl

org.springframework.beans.BeanWrapperImpl
Default {@link BeanWrapper} implementation that should be sufficientfor all typical use cases. Caches introspection results for efficiency.
Note: Auto-registers default property editors from the org.springframework.beans.propertyeditors package, which apply in addition to the JDK's standard PropertyEditors. Applications can call the {@link #registerCustomEditor(Class,java.beans.PropertyEditor)} methodto register an editor for a particular instance (i.e. they are not shared across the application). See the base class {@link PropertyEditorRegistrySupport} for details.
BeanWrapperImpl will convert collection and array values to the corresponding target collections or arrays, if necessary. Custom property editors that deal with collections or arrays can either be written via PropertyEditor's setValue, or against a comma-delimited String via setAsText, as String arrays are converted in such a format if the array itself is not assignable.
NOTE: As of Spring 2.5, this is - for almost all purposes - an internal class. It is just public in order to allow for access from other framework packages. For standard application access purposes, use the {@link PropertyAccessorFactory#forBeanPropertyAccess} factory method instead. @author Rod Johnson @author Juergen Hoeller @author Rob Harrop @since 15 April 2001 @see #registerCustomEditor @see #setPropertyValues @see #setPropertyValue @see #getPropertyValue @see #getPropertyType @see BeanWrapper @see PropertyEditorRegistrySupport

    assertEquals("bar", tb.getHashtable().get("foo"));
  }


  public void testUninitializedArrayPropertyWithCustomEditor() {
    IndexedTestBean bean = new IndexedTestBean(false);
    BeanWrapper bw = new BeanWrapperImpl(bean);
    PropertyEditor pe = new CustomNumberEditor(Integer.class, true);
    bw.registerCustomEditor(null, "list.age", pe);
    TestBean tb = new TestBean();
    bw.setPropertyValue("list", new ArrayList());
    bw.setPropertyValue("list[0]", tb);
    assertEquals(tb, bean.getList().get(0));
    assertEquals(pe, bw.findCustomEditor(int.class, "list.age"));
    assertEquals(pe, bw.findCustomEditor(null, "list.age"));
    assertEquals(pe, bw.findCustomEditor(int.class, "list[0].age"));
    assertEquals(pe, bw.findCustomEditor(null, "list[0].age"));
  }

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 */
public class BeanInfoTests extends TestCase {


  public void testComplexObject() {
    ValueBean bean = new ValueBean();
    BeanWrapper bw = new BeanWrapperImpl(bean);
    Integer value = new Integer(1);


    bw.setPropertyValue("value", value);
    assertEquals("value not set correctly", bean.getValue(), value);


    value = new Integer(2);
    bw.setPropertyValue("value", value.toString());
    assertEquals("value not converted", bean.getValue(), value);


    bw.setPropertyValue("value", null);
    assertNull("value not null", bean.getValue());


    bw.setPropertyValue("value", "");
    assertNull("value not converted to null", bean.getValue());
  }

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    assertEquals(pe, bw.findCustomEditor(null, "list[0].age"));
  }


  public void testArrayToArrayConversion() throws PropertyVetoException {
    IndexedTestBean tb = new IndexedTestBean();
    BeanWrapper bw = new BeanWrapperImpl(tb);
    bw.registerCustomEditor(TestBean.class, new PropertyEditorSupport() {
      public void setAsText(String text) throws IllegalArgumentException {
        setValue(new TestBean(text, 99));
      }
    });
    bw.setPropertyValue("array", new String[] {"a", "b"});
    assertEquals(2, tb.getArray().length);
    assertEquals("a", tb.getArray()[0].getName());
    assertEquals("b", tb.getArray()[1].getName());
  }

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    assertEquals("b", tb.getArray()[1].getName());
  }


  public void testArrayToStringConversion() throws PropertyVetoException {
    TestBean tb = new TestBean();
    BeanWrapper bw = new BeanWrapperImpl(tb);
    bw.registerCustomEditor(String.class, new PropertyEditorSupport() {
      public void setAsText(String text) throws IllegalArgumentException {
        setValue("-" + text + "-");
      }
    });
    bw.setPropertyValue("name", new String[] {"a", "b"});
    assertEquals("-a,b-", tb.getName());
  }

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    return expression.hashCode();
  }


  public Object getValue(Object context) throws EvaluationException {
    try {
      BeanWrapperImpl beanWrapper = new BeanWrapperImpl(context);
      return beanWrapper.getPropertyValue(expression);
    } catch (NotReadablePropertyException e) {
      throw new PropertyNotFoundException(context.getClass(), expression, e);
    } catch (BeansException e) {
      throw new EvaluationException(context.getClass(), getExpressionString(),
          "A BeansException occurred getting the value for expression '" + getExpressionString()

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    }
  }


  public void setValue(Object context, Object value) {
    try {
      BeanWrapperImpl beanWrapper = new BeanWrapperImpl(context);
      Set converters = conversionService.getConversionExecutors(String.class);
      for (Iterator it = converters.iterator(); it.hasNext();) {
        ConversionExecutor converter = (ConversionExecutor) it.next();
        beanWrapper.registerCustomEditor(converter.getTargetClass(), new PropertyEditorConverter(converter));
      }
      beanWrapper.setPropertyValue(expression, value);
    } catch (NotWritablePropertyException e) {
      throw new PropertyNotFoundException(context.getClass(), expression, e);
    } catch (TypeMismatchException e) {
      throw new ValueCoercionException(context.getClass(), expression, value, e.getRequiredType(), e);
    } catch (BeansException e) {

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    }
  }


  public Class getValueType(Object context) {
    try {
      BeanWrapperImpl beanWrapper = new BeanWrapperImpl(context);
      return beanWrapper.getPropertyType(expression);
    } catch (NotReadablePropertyException e) {
      throw new PropertyNotFoundException(context.getClass(), expression, e);
    } catch (BeansException e) {
      throw new EvaluationException(context.getClass(), getExpressionString(),
          "An BeansException occurred getting the value type for expression '" + getExpressionString()

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  }


  public Class getValueType(Object context) {
    try {
      // OGNL has no native way to get this information
      return new BeanWrapperImpl(context).getPropertyType(expressionString);
    } catch (InvalidPropertyException e) {
      throw new PropertyNotFoundException(context.getClass(), getExpressionString(), e);
    } catch (BeansException e) {
      throw new EvaluationException(context.getClass(), getExpressionString(),
          "An BeansException occurred getting the value type for expression '" + getExpressionString()

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    String s;
    int n;
    MockSourceProvider provider = new MockSourceProvider();
    RefreshablePagedListHolder holder = new RefreshablePagedListHolder(provider);
    holder.setFilter(new MockFilter());
    BeanWrapper bw = new BeanWrapperImpl(holder);


    holder.refresh(false);
    n = holder.getNrOfElements();
    assertTrue("A:number of elements: " + n, n == 12);
    n = holder.getPageCount();
    assertTrue("A:number of pages" + n, n == 2);
    n = holder.getPageSize();
    assertTrue("A:page size: " + n, n == 10);
    n = holder.getPage();
    assertTrue("A:page number: " + n, n == 0);
    n = holder.getFirstElementOnPage();
    assertTrue("A:first element: " + n, n == 0);
    n = holder.getLastElementOnPage();
    assertTrue("A:last element: " + n, n == 9);
    n = holder.getPageList().size();
    assertTrue("A:page list size: " + n, n == 10);
    assertTrue("A:correct filter", holder.getFilter() instanceof MockFilter);
    n = holder.getMaxLinkedPages();
    assertTrue("A:maxLinkedPages: " + n, n == RefreshablePagedListHolder.DEFAULT_MAX_LINKED_PAGES);
    n = holder.getFirstLinkedPage();
    assertTrue("A:first display page: " + n, n == 0);
    n = holder.getLastLinkedPage();
    assertTrue("A:last display page: " + n, n == 1);
    assertTrue("A:sort must be not null", holder.getSort().getProperty() != null);
    n = holder.getSort().getProperty().length();
    assertTrue("A:sort: " + n, n == 0);
    s = ((TestBean)holder.getPageList().get(0)).getName();
    assertTrue("A:page list contents0: " + s, s.equals("Calogero"));
    s = ((TestBean)holder.getPageList().get(4)).getName();
    assertTrue("A:page list contents4: " + s, s.equals("Jesus"));
    n = ((MockSourceProvider) holder.getSourceProvider()).getNrOfCalls();
    assertTrue("Correct number of times called: " + n, n == 1);


    // Go to the second page
    Map cmd = new HashMap();
    cmd.put("page", "1");
    bw.setPropertyValues(cmd);
    holder.refresh(false);
    n = holder.getPage();
    assertTrue("B:page number with array map: " + n, n == 1);
    n = holder.getPageList().size();
    assertTrue("B:page list size: " + n, n == 2);
    n = holder.getFirstElementOnPage();
    assertTrue("B:first element: " + n, n == 10);
    n = holder.getLastElementOnPage();
    assertTrue("B:last element: " + n, n == 11);
    s = ((TestBean)holder.getPageList().get(0)).getName();
    assertTrue("B:page list contents0: " + s, s.equals("Toma"));
    s = ((TestBean)holder.getPageList().get(1)).getName();
    assertTrue("B:page list contents1: " + s, s.equals("Sergio"));


    // Return to the first page and sort by name setting the page size to 5
    cmd.clear();
    cmd.put("sort.property", "name");
    cmd.put("pageSize", "2");
    bw.setPropertyValues(cmd);
    holder.refresh(false);
    n = holder.getPageCount();
    assertTrue("C:number of pages: " + n, n == 6);
    n = holder.getPageSize();
    assertTrue("C:page size: " + n, n == 2);
    n = holder.getPage();
    assertTrue("C:page number: " + n, n == 0);
    n = holder.getFirstLinkedPage();
    assertTrue("C:first display page: " + n, n == 0);
    n = holder.getLastLinkedPage();
    assertTrue("C:last display page: " + n, n == 5);
    n = holder.getFirstElementOnPage();
    assertTrue("C:first element: " + n, n == 0);
    n = holder.getLastElementOnPage();
    assertTrue("C:last element: " + n, n == 1);
    n = holder.getPageList().size();
    assertTrue("C:page list size: " + n, n == 2);
    s = ((TestBean)holder.getPageList().get(0)).getName();
    assertTrue("C:page list contents0: " + s, s.equals("amid"));
    s = ((TestBean)holder.getPageList().get(1)).getName();
    assertTrue("C:page list contents1: " + s, s.equals("Aziz"));
    assertTrue("C:sort must be not null", holder.getSort().getProperty() != null);
    s = holder.getSort().getProperty();
    assertTrue("C:sort: " + s, s.equals("name"));
    n = ((MockSourceProvider) holder.getSourceProvider()).getNrOfCalls();
    assertTrue("Correct number of times called: " + n, n == 1);


    // Ignore case in sort, maxLinkedPages set to 3
    cmd.clear();
    cmd.put("sort.ignoreCase", "false");
    cmd.put("maxLinkedPages", "3");
    bw.setPropertyValues(cmd);
    holder.refresh(false);
    s = ((TestBean)holder.getPageList().get(0)).getName();
    assertTrue("D:page list contents0: " + s, s.equals("Aziz"));
    s = ((TestBean)holder.getPageList().get(1)).getName();
    assertTrue("D:page list contents1: " + s, s.equals("Calogero"));
    n = holder.getFirstLinkedPage();
    assertTrue("D:first display page: " + n, n == 0);
    n = holder.getLastLinkedPage();
    assertTrue("D:last display page: " + n, n == 2);
    n = ((MockSourceProvider) holder.getSourceProvider()).getNrOfCalls();
    assertTrue("Correct number of times called: " + n, n == 1);


    // Go to the fourth page
    holder.setPage(3);
    s = ((TestBean)holder.getPageList().get(0)).getName();
    assertTrue("E:page list contents0: " + s, s.equals("Giuseppe"));
    s = ((TestBean)holder.getPageList().get(1)).getName();
    assertTrue("E:page list contents1: " + s, s.equals("Jesus"));
    n = holder.getFirstLinkedPage();
    assertTrue("E:first display page: " + n, n == 2);
    n = holder.getLastLinkedPage();
    assertTrue("E:last display page: " + n, n == 4);


    // Filter the name
    cmd.clear();
    cmd.put("filter.name", "G");
    bw.setPropertyValues(cmd);
    holder.refresh(false);
    n = holder.getPageCount();
    assertTrue("F:number of pages: " + n, n == 1);
    n = holder.getPageSize();
    assertTrue("F:page size: " + n, n == 2);
    n = holder.getPage();
    assertTrue("F:page number: " + n, n == 0);
    n = holder.getFirstLinkedPage();
    assertTrue("F:first display page: " + n, n == 0);
    n = holder.getLastLinkedPage();
    assertTrue("F:last display page: " + n, n == 0);
    n = holder.getFirstElementOnPage();
    assertTrue("F:first element: " + n, n == 0);
    n = holder.getLastElementOnPage();
    assertTrue("F:last element: " + n, n == 1);
    n = holder.getPageList().size();
    assertTrue("F:page list size: " + n, n == 2);
    s = ((TestBean)holder.getPageList().get(0)).getName();
    assertTrue("F:page list contents0: " + s, s.equals("Garcia"));
    s = ((TestBean)holder.getPageList().get(1)).getName();
    assertTrue("F:page list contents1: " + s, s.equals("Giuseppe"));
    s = ((MockFilter) holder.getFilter()).getName();
    assertTrue("F:filter name: " + s, s.equals("G"));
    n = ((MockSourceProvider) holder.getSourceProvider()).getNrOfCalls();
    assertTrue("Correct number of times called: " + n, n == 2);


    // Request sort on name will reverse the sort
    cmd.clear();
    cmd.put("sort.property", "name");
    bw.setPropertyValues(cmd);
    holder.refresh(false);
    s = ((TestBean)holder.getPageList().get(0)).getName();
    assertTrue("G:page list contents0: " + s, s.equals("Giuseppe"));
    s = ((TestBean)holder.getPageList().get(1)).getName();
    assertTrue("G:page list contents1: " + s, s.equals("Garcia"));


    // Filter the age
    cmd.clear();
    cmd.put("filter.age", "34");
    bw.setPropertyValues(cmd);
    holder.refresh(false);
    n = holder.getLastElementOnPage();
    assertTrue("H:last element: " + n, n == 0);
    n = holder.getPageList().size();
    assertTrue("H:page list size: " + n, n == 1);
    s = ((TestBean)holder.getPageList().get(0)).getName();
    assertTrue("H:page list contents0: " + s, s.equals("Garcia"));
    s = ((MockFilter) holder.getFilter()).getAge();
    assertTrue("H:filter age: " + s, s.equals("34"));
    s = ((MockFilter) holder.getFilter()).getName();
    assertTrue("H:filter name: " + s, s.equals("G"));
    n = ((MockSourceProvider) holder.getSourceProvider()).getNrOfCalls();
    assertTrue("Correct number of times called: " + n, n == 3);


    // Remove the name filter
    // The sort is always name reversed
    cmd.clear();
    cmd.put("filter.name", "");
    bw.setPropertyValues(cmd);
    holder.refresh(false);
    n = holder.getPageList().size();
    assertTrue("I:page list size: " + n, n == 2);
    s = ((MockFilter) holder.getFilter()).getName();
    assertTrue("H:filter name: " + s, s.equals(""));
    s = ((TestBean)holder.getPageList().get(0)).getName();
    assertTrue("I:page list contents0: " + s, s.equals("Garcia"));
    s = ((TestBean)holder.getPageList().get(1)).getName();
    assertTrue("I:page list contents1: " + s, s.equals("Djamel"));
    n = ((MockSourceProvider) holder.getSourceProvider()).getNrOfCalls();
    assertTrue("Correct number of times called: " + n, n == 4);


    // Go to the alternative list
    // The extendedInfo is provided to eventually pass a contextual data on the
    // source provider. BUT, BY ITSELF, IT DOESN'T IMPLY THE REFRESH OF THE LIST.
    cmd.clear();
    cmd.put("filter.extendedInfo", "F");
    bw.setPropertyValues(cmd);
    n = holder.getPageList().size();
    assertTrue("I:page list size: " + n, n == 2);
    s = ((TestBean)holder.getPageList().get(0)).getName();
    assertTrue("I:page list contents0: " + s, s.equals("Garcia"));
    s = ((TestBean)holder.getPageList().get(1)).getName();
    assertTrue("I:page list contents1: " + s, s.equals("Djamel"));


    // When the list is reloaded for any reason, the source provider
    // can use the extendedInfo.
    holder.refresh(true);
    n = holder.getPageList().size();
    assertTrue("J:page list size: " + n, n == 1);
    s = ((TestBean)holder.getPageList().get(0)).getName();
    assertTrue("J:page list contents0: " + s, s.equals("Catherine"));
    n = ((MockSourceProvider) holder.getSourceProvider()).getNrOfCalls();
    assertTrue("Correct number of times called: " + n, n == 5);


    // The locale change imply a refresh of the list.
    // In this test the list will be empty if a locale is provided
    cmd.clear();
    cmd.put("locale", "en_US");
    bw.setPropertyValues(cmd);
    holder.refresh(false);
    n = holder.getPageList().size();
    assertTrue("K:page list size: " + n, n == 0);
    n = holder.getPageCount();
    assertTrue("K:number of pages: " + n, n == 1);

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                return list;
            }
      
      protected BeanWrapper getParent() {
                if (test1) {
                    return new BeanWrapperImpl(employee1List.get(0));
                }else {
                    return new BeanWrapperImpl(employee2List.get(0));
                }
            }
      
        protected void updateChildren(Set<Serializable> unselectedChildren) {
        }

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