package org.jboss.seam.solder.bean;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import javax.enterprise.context.Dependent;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.Default;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.InjectionPoint;
import org.jboss.seam.solder.literal.DefaultLiteral;
import org.jboss.seam.solder.util.collections.Arrays2;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* <p>
* A base class for implementing {@link Bean}. The attributes are immutable, and
* collections are defensively copied on instantiation. It uses the defaults
* from the specification for properties if not specified.
* </p>
*
* <p>
* This class does not provide any bean lifecycle operations
* </p>
*
* @author Pete Muir
* @see ImmutableBean
* @see ImmutableNarrowingBean
*/
public abstract class AbstractImmutableBean<T> implements Bean<T>
{
private transient Logger log = LoggerFactory.getLogger(AbstractImmutableBean.class);
private final Class<?> beanClass;
private final String name;
private final Set<Annotation> qualifiers;
private final Class<? extends Annotation> scope;
private final Set<Class<? extends Annotation>> stereotypes;
private final Set<Type> types;
private final boolean alternative;
private final boolean nullable;
private final Set<InjectionPoint> injectionPoints;
private final String toString;
/**
* Create a new, immutable bean. All arguments passed as collections are
* defensively copied.
*
* @param beanClass The Bean class, may not be null
* @param name The bean name
* @param qualifiers The bean's qualifiers, if null, a singleton set of
* {@link Default} is used
* @param scope The bean's scope, if null, the default scope of
* {@link Dependent} is used
* @param stereotypes The bean's stereotypes, if null, an empty set is used
* @param types The bean's types, if null, the beanClass and {@link Object}
* will be used
* @param alternative True if the bean is an alternative
* @param nullable True if the bean is nullable
* @param injectionPoints the bean's injection points, if null an empty set
* is used
* @param beanLifecycle Handler for {@link #create(CreationalContext)} and
* {@link #destroy(Object, CreationalContext)}
*
* @throws IllegalArgumentException if the beanClass is null
*/
public AbstractImmutableBean(Class<?> beanClass, String name, Set<Annotation> qualifiers, Class<? extends Annotation> scope, Set<Class<? extends Annotation>> stereotypes, Set<Type> types, boolean alternative, boolean nullable, Set<InjectionPoint> injectionPoints, String toString)
{
if (beanClass == null)
{
throw new IllegalArgumentException("beanClass cannot be null");
}
this.beanClass = beanClass;
this.name = name;
if (qualifiers == null)
{
this.qualifiers = Collections.<Annotation> singleton(DefaultLiteral.INSTANCE);
log.trace("No qualifers provided for bean class " + beanClass + ", using singleton set of @Default");
}
else
{
this.qualifiers = new HashSet<Annotation>(qualifiers);
}
if (scope == null)
{
this.scope = Dependent.class;
log.trace("No scope provided for bean class " + beanClass + ", using @Dependent");
}
else
{
this.scope = scope;
}
if (stereotypes == null)
{
this.stereotypes = Collections.emptySet();
}
else
{
this.stereotypes = new HashSet<Class<? extends Annotation>>(stereotypes);
}
if (types == null)
{
this.types = Arrays2.<Type> asSet(Object.class, beanClass);
log.trace("No types provided for bean class " + beanClass + ", using [java.lang.Object.class, " + beanClass.getName() + ".class]");
}
else
{
this.types = new HashSet<Type>(types);
}
if (injectionPoints == null)
{
this.injectionPoints = Collections.emptySet();
}
else
{
this.injectionPoints = new HashSet<InjectionPoint>(injectionPoints);
}
this.alternative = alternative;
this.nullable = nullable;
if (toString != null)
{
this.toString = toString;
}
else
{
this.toString = "Custom Bean with bean class " + beanClass + " and qualifiers " + qualifiers;
}
}
public Class<?> getBeanClass()
{
return beanClass;
}
public Set<InjectionPoint> getInjectionPoints()
{
return injectionPoints;
}
public String getName()
{
return name;
}
public Set<Annotation> getQualifiers()
{
return Collections.unmodifiableSet(qualifiers);
}
public Class<? extends Annotation> getScope()
{
return scope;
}
public Set<Class<? extends Annotation>> getStereotypes()
{
return Collections.unmodifiableSet(stereotypes);
}
public Set<Type> getTypes()
{
return Collections.unmodifiableSet(types);
}
public boolean isAlternative()
{
return alternative;
}
public boolean isNullable()
{
return nullable;
}
@Override
public String toString()
{
return toString;
}
}