package com.avaje.ebeaninternal.server.reflect;
import java.lang.reflect.Constructor;
import java.lang.reflect.Modifier;
import javax.persistence.PersistenceException;
import com.avaje.ebean.bean.EntityBean;
/**
* A BeanReflect implementation based on the enhancement that creates EntityBean
* implementations.
*/
public final class EnhanceBeanReflect implements BeanReflect {
private static final Object[] constuctorArgs = new Object[0];
private final Constructor<?> constructor;
public EnhanceBeanReflect(Class<?> clazz) {
try {
if (Modifier.isAbstract(clazz.getModifiers())) {
this.constructor = null;
} else {
this.constructor = defaultConstructor(clazz);
}
} catch (Exception e) {
throw new PersistenceException(e);
}
}
private Constructor<?> defaultConstructor(Class<?> cls) {
try {
Class<?>[] params = new Class[0];
return cls.getDeclaredConstructor(params);
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
public Object createEntityBean() {
try {
return constructor.newInstance(constuctorArgs);
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
public BeanReflectGetter getGetter(String name, int position) {
return new Getter(position);
}
public BeanReflectSetter getSetter(String name, int position) {
return new Setter(position);
}
static final class Getter implements BeanReflectGetter {
private final int fieldIndex;
Getter(int fieldIndex) {
this.fieldIndex = fieldIndex;
}
public Object get(EntityBean bean) {
return bean._ebean_getField(fieldIndex);
}
public Object getIntercept(EntityBean bean) {
return bean._ebean_getFieldIntercept(fieldIndex);
}
}
static final class Setter implements BeanReflectSetter {
private final int fieldIndex;
Setter(int fieldIndex) {
this.fieldIndex = fieldIndex;
}
public void set(EntityBean bean, Object value) {
bean._ebean_setField(fieldIndex, value);
}
public void setIntercept(EntityBean bean, Object value) {
bean._ebean_setFieldIntercept(fieldIndex, value);
}
}
}