Examples of org.apache.commons.beanutils.DynaBean

org.apache.commons.beanutils.DynaBean

A DynaBean is a Java object that supports properties whose names and data types, as well as values, may be dynamically modified. To the maximum degree feasible, other components of the BeanUtils package will recognize such beans and treat them as standard JavaBeans for the purpose of retrieving and setting property values.
@author Craig McClanahan @author Paulo Gaspar @version $Revision: 555824 $ $Date: 2007-07-13 01:27:15 +0100 (Fri, 13 Jul 2007) $

        Logger logger = LoggerFactory.getDefaultLogger();
        logger.error("Error in operation [get of object [" + this.getClass().getName() + "], " + msg);
        logger.error("Property Name [" + getName() + "]");
        if (anObject instanceof DynaBean)
        {
            DynaBean dynaBean = (DynaBean) anObject;
            logger.error("anObject was DynaClass [" + dynaBean.getDynaClass().getName() + "]");
        }
        else if (anObject != null)
        {
            logger.error("anObject was class [" + anObject.getClass().getName() + "]");
        }

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        for ( int n=0; n < 4; n++ ) {
            int r = rnd.nextInt();
            idBuf.append( Integer.toHexString( r ) );
        }
        idStr = idBuf.toString();
        DynaBean dbInfo = dbModel.createDynaBeanFor( "database_info", false );
        dbInfo.set( "database_id", idStr );
        dbInfo.set( "schema_version", new Integer( CURRENT_SCHEMA_VERSION ) );
        dbInfo.set( "create_time", new Timestamp( System.currentTimeMillis() ) );
        platform.insert( dbModel, dbInfo );
    }

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                    dynaTag.setAttribute(name, value);
                }
            }
            else {
                // treat the tag as a bean
                DynaBean dynaBean = new ConvertingWrapDynaBean( tag );
                for (Iterator iter = attributes.entrySet().iterator(); iter.hasNext();) {
                    Map.Entry entry = (Map.Entry) iter.next();
                    String name = (String) entry.getKey();
                    Expression expression = (Expression) entry.getValue();
        
                    Object value = expression.evaluate(context);
                    dynaBean.set(name, value);
                }
            }
        
            tag.doTag(output);
        }

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        form.setServlet(servlet);


        if (form instanceof DynaBean && 
            ((DynaBean)form).getDynaClass() instanceof MutableDynaClass) {
            DynaBean         dynaBean  = (DynaBean)form;
            MutableDynaClass dynaClass = (MutableDynaClass)dynaBean.getDynaClass();


            // Add properties
            dynaClass.setRestricted(false);
            FormPropertyConfig props[] = findFormPropertyConfigs();
            for (int i = 0; i < props.length; i++) {
                dynaClass.add(props[i].getName(), props[i].getTypeClass());
                dynaBean.set(props[i].getName(), props[i].initial());
            }
            dynaClass.setRestricted(isRestricted());


        }

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                    dynaTag.setAttribute(name, value);
                }
            }
            else {
                // treat the tag as a bean
                DynaBean dynaBean = new ConvertingWrapDynaBean( tag );
                for (Iterator iter = attributes.entrySet().iterator(); iter.hasNext();) {
                    Map.Entry entry = (Map.Entry) iter.next();
                    String name = (String) entry.getKey();
                    Expression expression = (Expression) entry.getValue();


                    DynaProperty property = dynaBean.getDynaClass().getDynaProperty(name);
                    if (property == null) {
                        throw new JellyException("This tag does not understand the '" + name + "' attribute" );
                    }
                    Class type = property.getType();


                    Object value = null;
                    if (type.isAssignableFrom(Expression.class) && !type.isAssignableFrom(Object.class)) {
                        value = expression;
                    }
                    else {
                        value = expression.evaluateRecurse(context);
                    }
                    dynaBean.set(name, value);
                }
            }


            tag.doTag(output);
        }

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        form.setServlet(servlet);


        if (form instanceof DynaBean && 
            ((DynaBean)form).getDynaClass() instanceof MutableDynaClass) {
            DynaBean         dynaBean  = (DynaBean)form;
            MutableDynaClass dynaClass = (MutableDynaClass)dynaBean.getDynaClass();


            // Add properties
            dynaClass.setRestricted(false);
            FormPropertyConfig props[] = findFormPropertyConfigs();
            for (int i = 0; i < props.length; i++) {
                dynaClass.add(props[i].getName(), props[i].getTypeClass());
                dynaBean.set(props[i].getName(), props[i].initial());
            }
            dynaClass.setRestricted(isRestricted());


        }

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        new DynaProperty("sex", String.class),
        new DynaProperty("address", String.class),
        new DynaProperty("age", Integer.class),
        new DynaProperty("bean", DynaBean.class) };
    DynaClass personClass = new BasicDynaClass("beanName", null, properties);
    DynaBean personBean = personClass.newInstance();
    personBean.set("name", "tom");
    personBean.set("sex", "man");
    personBean.set("address", "shanghai zhangjiang");
    personBean.set("age", new Integer(20));


    DynaBean bean = createBean();
    bean.set("beanName", "personBean");
    bean.set("beanNo", new Integer(1));


    personBean.set("bean", bean);


    return personBean;
  }

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    return personBean;
  }


  private static DynaBean createBean() {
    DynaBean bean = new LazyDynaBean();
    return bean;
  }

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                    dynaTag.setAttribute(name, value);
                }
            }
            else {
                // treat the tag as a bean
                DynaBean dynaBean = new ConvertingWrapDynaBean( tag );
                for (Iterator iter = attributes.entrySet().iterator(); iter.hasNext();) {
                    Map.Entry entry = (Map.Entry) iter.next();
                    String name = (String) entry.getKey();
                    Expression expression = (Expression) entry.getValue();


                    DynaProperty property = dynaBean.getDynaClass().getDynaProperty(name);
                    if (property == null) {
                        throw new JellyException("This tag does not understand the '" + name + "' attribute" );
                    }
                    Class type = property.getType();


                    Object value = null;
                    if (type.isAssignableFrom(Expression.class) && !type.isAssignableFrom(Object.class)) {
                        value = expression;
                    }
                    else {
                        value = expression.evaluateRecurse(context);
                    }
                    dynaBean.set(name, value);
                }
            }


            tag.doTag(output);
            output.flush();

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        super(testName);
    }


    public void testDynaBeans() throws Exception {
        DynaClass dynaClass = createDynaClass();
        DynaBean dynaBean = dynaClass.newInstance();
        dynaBean.set( "stringProperty", "foo" );
        dynaBean.set( "intProperty", new Integer(24) );


        context.setVariable("dbean", dynaBean);


        assertExpression("${dbean.stringProperty}", "foo");
        assertExpression("${dbean.intProperty}", new Integer(24));

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