Example usage for org.apache.commons.beanutils MutableDynaClass newInstance

Introduction

In this page you can find the example usage for org.apache.commons.beanutils MutableDynaClass newInstance.

Prototype

public DynaBean newInstance() throws IllegalAccessException, InstantiationException;

Source Link

Document

Instantiate and return a new DynaBean instance, associated with this DynaClass.

Usage

From source file:io.coala.experimental.dynabean.DynaBeanTest.java

@Test
public void testDynaBeans() throws Exception {
    // for usage, see
    // http://commons.apache.org/proper/commons-beanutils/javadocs/v1.9.2/apidocs/org/apache/commons/beanutils/package-summary.html#package_description

    final DynaBean dynaBean = new LazyDynaBean(); // Create LazyDynaBean
    final MutableDynaClass dynaClass = (MutableDynaClass) dynaBean.getDynaClass(); // get DynaClass

    dynaClass.add("amount", java.lang.Integer.class); // add property
    dynaClass.add("myMap", java.util.TreeMap.class); // add mapped property

    final DynaBean employee = dynaClass.newInstance();

    // TODO experiment with Jackson's AnnotationIntrospector to annotate
    // DynaBean#get(...) method with @JsonAnyGetter and #set(...) method
    // with @JsonAnySetter

    employee.set("address", new HashMap<String, String>());
    employee.set("activeEmployee", Boolean.FALSE);
    employee.set("firstName", "Fred");
    employee.set("lastName", "Flintstone");

    LOG.trace("Employee: " + JsonUtil.toPrettyJSON(employee));

    // set all <activeEmployee> attribute values to <true>
    final BeanPropertyValueChangeClosure closure = new BeanPropertyValueChangeClosure("activeEmployee",
            Boolean.TRUE);/*from   w ww . j ava 2s. c  om*/

    final Collection<?> employees = Collections.singleton(employee);
    LOG.trace("Mutated employees: " + JsonUtil.toPrettyJSON(employees));

    // update the Collection
    CollectionUtils.forAllDo(employees, closure);

    // filter for beans with <activeEmployee> set to <false>
    final BeanPropertyValueEqualsPredicate predicate = new BeanPropertyValueEqualsPredicate("lastName",
            "Flintstone");

    // filter the Collection
    CollectionUtils.filter(employees, predicate);
    LOG.trace("Filtered employees: " + JsonUtil.toPrettyJSON(employees));
}

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