Example usage for org.hibernate.internal.util ReflectHelper getDefaultConstructor

Introduction

In this page you can find the example usage for org.hibernate.internal.util ReflectHelper getDefaultConstructor.

Prototype

public static <T> Constructor<T> getDefaultConstructor(Class<T> clazz) throws PropertyNotFoundException 

Source Link

Document

Retrieve the default (no arg) constructor from the given class.

Usage

From source file:org.web4thejob.orm.AbstractHibernateEntity.java

License:Open Source License

@SuppressWarnings("CloneDoesntCallSuperClone")
@Override//ww w  . j  a  va 2  s. co  m
public Entity clone() {
    try {
        final Entity clone = (Entity) ReflectHelper.getDefaultConstructor(getClass())
                .newInstance((Object[]) null);
        clone.addDirtyListener(dirtyListener);

        ReflectionUtils.doWithFields(getClass(), new ReflectionUtils.FieldCallback() {
            @Override
            public void doWith(Field field) throws IllegalArgumentException, IllegalAccessException {
                ReflectionUtils.makeAccessible(field);
                if (!Collection.class.isAssignableFrom(field.getType())) {
                    // don't clone one-to-many fields
                    field.set(clone, field.get(AbstractHibernateEntity.this));
                }
            }
        }, ReflectionUtils.COPYABLE_FIELDS);

        return clone;
    } catch (Exception e) {
        e.printStackTrace();
        throw new RuntimeException("Clone failed for " + toString(), e);
    }
}

---

From source file:org.web4thejob.orm.MetaReaderServiceImpl.java

License:Open Source License

@Override
@SuppressWarnings("unchecked")
public <E extends Entity> E newInstance(Class<? extends Entity> entityType) {
    try {//from  w w  w. ja v a2  s . com
        if (entityType.isInterface()) {
            entityType = getEntityMetadata(entityType).getMappedClass();
        }

        return (E) ReflectHelper.getDefaultConstructor(entityType).newInstance((Object[]) null);
    } catch (final Exception e) {
        e.printStackTrace();
        return null;
    }
}

---