org.apache.deltaspike.core.util.bean.BaseImmutableBean Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.deltaspike.core.util.bean;
import org.apache.deltaspike.core.api.literal.DefaultLiteral;
import org.apache.deltaspike.core.util.ArraysUtils;
import javax.enterprise.context.Dependent;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.InjectionPoint;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Logger;
/**
*
* 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.
*
*
*
* This class does not provide any bean lifecycle operations
*
*
* @see ImmutableBeanWrapper
*/
public abstract class BaseImmutableBean implements Bean
{
private static final Logger LOG = Logger.getLogger(BaseImmutableBean.class.getName());
private final Class beanClass;
private final String name;
private final Set qualifiers;
private final Class scope;
private final Set> stereotypes;
private final Set types;
private final boolean alternative;
private final boolean nullable;
private final Set 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 javax.enterprise.inject.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 toString the string which should be returned by #{@link #toString()}
* @throws IllegalArgumentException if the beanClass is null
*/
public BaseImmutableBean(Class beanClass,
String name,
Set qualifiers,
Class scope,
Set> stereotypes,
Set types,
boolean alternative,
boolean nullable,
Set 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.singleton(new DefaultLiteral());
LOG.finest("No qualifers provided for bean class " + beanClass + ", using singleton set of @Default");
}
else
{
this.qualifiers = new HashSet(qualifiers);
}
if (scope == null)
{
this.scope = Dependent.class;
LOG.finest("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>(stereotypes);
}
if (types == null)
{
//noinspection unchecked
this.types = ArraysUtils.asSet(Object.class, beanClass);
LOG.finest("No types provided for bean class " + beanClass
+ ", using [java.lang.Object.class, " + beanClass.getName()
+ ".class]");
}
else
{
this.types = new HashSet(types);
}
if (injectionPoints == null)
{
this.injectionPoints = Collections.emptySet();
}
else
{
this.injectionPoints = new HashSet(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;
}
}
@Override
public Class getBeanClass()
{
return beanClass;
}
@Override
public Set getInjectionPoints()
{
return injectionPoints;
}
@Override
public String getName()
{
return name;
}
@Override
public Set getQualifiers()
{
return Collections.unmodifiableSet(qualifiers);
}
@Override
public Class getScope()
{
return scope;
}
@Override
public Set> getStereotypes()
{
return Collections.unmodifiableSet(stereotypes);
}
@Override
public Set getTypes()
{
return Collections.unmodifiableSet(types);
}
@Override
public boolean isAlternative()
{
return alternative;
}
@Override
public boolean isNullable()
{
return nullable;
}
@Override
public String toString()
{
return toString;
}
}