/**
* An identifier for an EJB proxy invocation target instance, suitable for use as a hash key or a
* serialized token.
*
* @param <T> the interface type
*/
public abstract class EJBLocator<T> implements Serializable {
private static final long serialVersionUID = -7306257085240447972L;
private final Class<T> viewType;
private final String appName;
private final String moduleName;
private final String beanName;
private final String distinctName;
private final Affinity affinity;
private final transient Class<? extends T> proxyClass;
private final transient Constructor<? extends T> proxyConstructor;
private final transient int hashCode;
private static final FieldSetter hashCodeSetter = FieldSetter.get(EJBLocator.class, "hashCode");
private static final FieldSetter proxyClassSetter =
FieldSetter.get(EJBLocator.class, "proxyClass");
private static final FieldSetter proxyConstructorSetter =
FieldSetter.get(EJBLocator.class, "proxyConstructor");
EJBLocator(
final Class<T> viewType,
final String appName,
final String moduleName,
final String beanName,
final String distinctName,
final Affinity affinity) {
if (viewType == null) {
throw Logs.MAIN.paramCannotBeNull("viewType");
}
if (appName == null) {
throw Logs.MAIN.paramCannotBeNull("appName");
}
if (moduleName == null) {
throw Logs.MAIN.paramCannotBeNull("moduleName");
}
if (beanName == null) {
throw Logs.MAIN.paramCannotBeNull("beanName");
}
if (distinctName == null) {
throw Logs.MAIN.paramCannotBeNull("distinctName");
}
this.viewType = viewType;
this.appName = appName;
this.moduleName = moduleName;
this.beanName = beanName;
this.distinctName = distinctName;
this.affinity = affinity == null ? Affinity.NONE : affinity;
if (System.getSecurityManager() == null) {
proxyClass = Proxy.getProxyClass(viewType.getClassLoader(), viewType).asSubclass(viewType);
try {
proxyConstructor = proxyClass.getConstructor(InvocationHandler.class);
} catch (NoSuchMethodException e) {
throw new NoSuchMethodError("No valid constructor found on proxy class");
}
} else {
proxyClass =
AccessController.doPrivileged(
new PrivilegedAction<Class<? extends T>>() {
@Override
public Class<? extends T> run() {
return Proxy.getProxyClass(viewType.getClassLoader(), viewType)
.asSubclass(viewType);
}
});
proxyConstructor =
AccessController.doPrivileged(
new PrivilegedAction<Constructor<? extends T>>() {
@Override
public Constructor<? extends T> run() {
try {
return proxyClass.getConstructor(InvocationHandler.class);
} catch (NoSuchMethodException e) {
throw new NoSuchMethodError("No valid constructor found on proxy class");
}
}
});
}
hashCode = calcHashCode(viewType, appName, moduleName, beanName, distinctName);
}
private static int calcHashCode(
final Class<?> viewType,
final String appName,
final String moduleName,
final String beanName,
final String distinctName) {
return viewType.hashCode() * 13
+ (appName.hashCode() * 13
+ (moduleName.hashCode() * 13
+ (beanName.hashCode() * 13 + (distinctName.hashCode()))));
}
/**
* Get the view type of this locator.
*
* @return the view type
*/
public Class<T> getViewType() {
return viewType;
}
/**
* Get the application name.
*
* @return the application name
*/
public String getAppName() {
return appName;
}
/**
* Get the module name.
*
* @return the module name
*/
public String getModuleName() {
return moduleName;
}
/**
* Get the EJB bean name.
*
* @return the EJB bean name
*/
public String getBeanName() {
return beanName;
}
/**
* Get the module distinct name.
*
* @return the module distinct name
*/
public String getDistinctName() {
return distinctName;
}
/**
* Get the locator affinity.
*
* @return the locator affinity
*/
public Affinity getAffinity() {
return affinity;
}
/**
* Get the hash code for this instance.
*
* @return the hash code for this instance
*/
public int hashCode() {
return hashCode;
}
/**
* Determine whether this object is equal to another.
*
* @param other the other object
* @return {@code true} if they are equal, {@code false} otherwise
*/
public boolean equals(Object other) {
return other instanceof EJBLocator && equals((EJBLocator<?>) other);
}
/**
* Get the proxy class for this locator.
*
* @return the proxy class
*/
public Class<? extends T> getProxyClass() {
return proxyClass;
}
/**
* Get the proxy class constructor for this locator. A proxy class constructor accepts a single
* argument of type {@link InvocationHandler}.
*
* @return the proxy constructor
*/
public Constructor<? extends T> getProxyConstructor() {
return proxyConstructor;
}
/**
* Create a proxy instance using the cached proxy class.
*
* @param invocationHandler the invocation handler to use
* @return the proxy instance
*/
public T createProxyInstance(InvocationHandler invocationHandler) {
if (invocationHandler == null) {
throw Logs.MAIN.paramCannotBeNull("Invocation handler");
}
try {
return proxyConstructor.newInstance(invocationHandler);
} catch (InstantiationException e) {
throw new InstantiationError(e.getMessage());
} catch (IllegalAccessException e) {
throw new IllegalAccessError(e.getMessage());
} catch (InvocationTargetException e) {
throw new UndeclaredThrowableException(e.getCause());
}
}
/**
* Determine whether this object is equal to another.
*
* @param other the other object
* @return {@code true} if they are equal, {@code false} otherwise
*/
public boolean equals(EJBLocator<?> other) {
return this == other
|| other != null
&& hashCode == other.hashCode
&& appName.equals(other.appName)
&& moduleName.equals(other.moduleName)
&& beanName.equals(other.beanName)
&& distinctName.equals(other.distinctName);
}
private void readObject(ObjectInputStream ois) throws ClassNotFoundException, IOException {
ois.defaultReadObject();
final Class<? extends T> proxyType =
Proxy.getProxyClass(viewType.getClassLoader(), viewType).asSubclass(viewType);
final Constructor<? extends T> proxyConstructor;
try {
proxyConstructor = proxyType.getConstructor(InvocationHandler.class);
} catch (NoSuchMethodException e) {
throw new NoSuchMethodError("No valid constructor found on proxy class");
}
proxyClassSetter.set(this, proxyType);
proxyConstructorSetter.set(this, proxyConstructor);
hashCodeSetter.setInt(
this, calcHashCode(viewType, appName, moduleName, beanName, distinctName));
}
}
/**
* A locator for an entity EJB.
*
* @param <T> the remote view type
*/
public final class EntityEJBLocator<T extends EJBObject> extends EJBLocator<T> {
private static final long serialVersionUID = 6674116259124568398L;
private final Object primaryKey;
private final transient int hashCode;
private static final FieldSetter hashCodeSetter =
FieldSetter.get(EntityEJBLocator.class, "hashCode");
/**
* Construct a new instance.
*
* @param viewType the view type
* @param appName the application name
* @param moduleName the module name
* @param beanName the bean name
* @param distinctName the distinct name
* @param primaryKey the entity primary key
*/
public EntityEJBLocator(
final Class<T> viewType,
final String appName,
final String moduleName,
final String beanName,
final String distinctName,
final Object primaryKey) {
super(viewType, appName, moduleName, beanName, distinctName, Affinity.NONE);
if (primaryKey == null) {
throw Logs.MAIN.paramCannotBeNull("primary key");
}
this.primaryKey = primaryKey;
hashCode = primaryKey.hashCode() * 13 + super.hashCode();
}
/**
* Get the primary key for the referenced entity.
*
* @return the primary key for the referenced entity
*/
public Object getPrimaryKey() {
return primaryKey;
}
/**
* Determine whether this object is equal to another.
*
* @param other the other object
* @return {@code true} if they are equal, {@code false} otherwise
*/
public boolean equals(final Object other) {
return other instanceof EntityEJBLocator && equals((EntityEJBLocator<?>) other);
}
/**
* Determine whether this object is equal to another.
*
* @param other the other object
* @return {@code true} if they are equal, {@code false} otherwise
*/
public boolean equals(final EJBLocator<?> other) {
return other instanceof EntityEJBLocator && equals((EntityEJBLocator<?>) other);
}
/**
* Determine whether this object is equal to another.
*
* @param other the other object
* @return {@code true} if they are equal, {@code false} otherwise
*/
public boolean equals(final EntityEJBLocator<?> other) {
return super.equals(other) && primaryKey.equals(other.primaryKey);
}
/**
* Get the hash code for this instance.
*
* @return the hash code for this instance
*/
public int hashCode() {
return hashCode;
}
private void readObject(ObjectInputStream ois) throws ClassNotFoundException, IOException {
ois.defaultReadObject();
hashCodeSetter.setInt(this, primaryKey.hashCode() * 13 + super.hashCode());
}
@Override
public String toString() {
return "EntityEJBLocator{"
+ "appName='"
+ getAppName()
+ '\''
+ ", moduleName='"
+ getModuleName()
+ '\''
+ ", distinctName='"
+ getDistinctName()
+ '\''
+ ", beanName='"
+ getBeanName()
+ '\''
+ ", view='"
+ getViewType()
+ '\''
+ ", primaryKey='"
+ getPrimaryKey()
+ '\''
+ '}';
}
}
/**
* A locator for an entity EJB.
*
* @param <T> the remote view type
*/
public final class EntityEJBLocator<T extends EJBObject> extends EJBLocator<T> {
private static final long serialVersionUID = 6674116259124568398L;
private final Object primaryKey;
private final transient int hashCode;
private static final FieldSetter hashCodeSetter =
FieldSetter.get(EntityEJBLocator.class, "hashCode");
/**
* Construct a new instance.
*
* @param viewType the view type
* @param appName the application name
* @param moduleName the module name
* @param beanName the bean name
* @param primaryKey the entity primary key
*/
public EntityEJBLocator(
final Class<T> viewType,
final String appName,
final String moduleName,
final String beanName,
final Object primaryKey) {
this(viewType, appName, moduleName, beanName, null, primaryKey, Affinity.NONE);
}
/**
* Construct a new instance.
*
* @param viewType the view type
* @param appName the application name
* @param moduleName the module name
* @param beanName the bean name
* @param primaryKey the entity primary key
* @param affinity the affinity
*/
public EntityEJBLocator(
final Class<T> viewType,
final String appName,
final String moduleName,
final String beanName,
final Object primaryKey,
final Affinity affinity) {
this(viewType, appName, moduleName, beanName, null, primaryKey, affinity);
}
/**
* Construct a new instance.
*
* @param viewType the view type
* @param appName the application name
* @param moduleName the module name
* @param beanName the bean name
* @param distinctName the distinct name
* @param primaryKey the entity primary key
*/
public EntityEJBLocator(
final Class<T> viewType,
final String appName,
final String moduleName,
final String beanName,
final String distinctName,
final Object primaryKey) {
this(viewType, appName, moduleName, beanName, distinctName, primaryKey, Affinity.NONE);
}
/**
* Construct a new instance.
*
* @param viewType the view type
* @param appName the application name
* @param moduleName the module name
* @param beanName the bean name
* @param distinctName the distinct name
* @param primaryKey the entity primary key
* @param affinity the affinity
*/
public EntityEJBLocator(
final Class<T> viewType,
final String appName,
final String moduleName,
final String beanName,
final String distinctName,
final Object primaryKey,
final Affinity affinity) {
super(viewType, appName, moduleName, beanName, distinctName, affinity);
if (primaryKey == null) {
throw Logs.MAIN.paramCannotBeNull("primary key");
}
this.primaryKey = primaryKey;
hashCode = primaryKey.hashCode() * 13 + super.hashCode();
}
/**
* Construct a new instance. This constructor creates a copy of the original locator, but with a
* new affinity.
*
* @param original the original locator
* @param newAffinity the new affinity
*/
public EntityEJBLocator(final EntityEJBLocator<T> original, final Affinity newAffinity) {
super(original, newAffinity);
this.primaryKey = original.primaryKey;
hashCode = primaryKey.hashCode() * 13 + super.hashCode();
}
public EJBLocator<T> withNewAffinity(final Affinity affinity) {
return new EntityEJBLocator<T>(this, affinity);
}
@SuppressWarnings("unchecked")
public <S> EntityEJBLocator<? extends S> narrowTo(final Class<S> type) {
return (EntityEJBLocator<? extends S>) super.narrowTo(type);
}
@SuppressWarnings("unchecked")
public <S extends EJBObject> EntityEJBLocator<? extends S> narrowAsEntity(final Class<S> type) {
if (type.isAssignableFrom(getViewType())) {
return (EntityEJBLocator<? extends S>) this;
}
throw new ClassCastException(type.toString());
}
/**
* Get the primary key for the referenced entity.
*
* @return the primary key for the referenced entity
*/
public Object getPrimaryKey() {
return primaryKey;
}
/**
* Determine whether this object is equal to another.
*
* @param other the other object
* @return {@code true} if they are equal, {@code false} otherwise
*/
public boolean equals(final Object other) {
return other instanceof EntityEJBLocator && equals((EntityEJBLocator<?>) other);
}
/**
* Determine whether this object is equal to another.
*
* @param other the other object
* @return {@code true} if they are equal, {@code false} otherwise
*/
public boolean equals(final EJBLocator<?> other) {
return other instanceof EntityEJBLocator && equals((EntityEJBLocator<?>) other);
}
/**
* Determine whether this object is equal to another.
*
* @param other the other object
* @return {@code true} if they are equal, {@code false} otherwise
*/
public boolean equals(final EntityEJBLocator<?> other) {
return super.equals(other) && primaryKey.equals(other.primaryKey);
}
/**
* Get the hash code for this instance.
*
* @return the hash code for this instance
*/
public int hashCode() {
return hashCode;
}
private void readObject(ObjectInputStream ois) throws ClassNotFoundException, IOException {
ois.defaultReadObject();
hashCodeSetter.setInt(this, primaryKey.hashCode() * 13 + super.hashCode());
}
@Override
public String toString() {
return String.format("%s, primary key is %s", super.toString(), getPrimaryKey());
}
}