/*
* Copyright (c) 2008, Rickard Öberg. All Rights Reserved.
*
* Licensed 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.qi4j.runtime.association;
import org.qi4j.api.association.Association;
import org.qi4j.api.association.GenericAssociationInfo;
import org.qi4j.api.common.MetaInfo;
import org.qi4j.api.common.QualifiedName;
import org.qi4j.api.composite.Composite;
import org.qi4j.api.constraint.ConstraintViolation;
import org.qi4j.api.constraint.ConstraintViolationException;
import org.qi4j.api.entity.Aggregated;
import org.qi4j.api.entity.Queryable;
import org.qi4j.api.association.AssociationDescriptor;
import org.qi4j.api.property.Immutable;
import org.qi4j.api.util.Classes;
import org.qi4j.bootstrap.BindingException;
import org.qi4j.functional.Visitable;
import org.qi4j.functional.Visitor;
import org.qi4j.runtime.composite.ValueConstraintsInstance;
import org.qi4j.runtime.model.Binder;
import org.qi4j.runtime.model.Resolution;
import java.lang.reflect.*;
import java.util.List;
/**
* JAVADOC
*/
public final class AssociationModel
implements AssociationDescriptor, AssociationInfo, Binder, Visitable<AssociationModel>
{
private MetaInfo metaInfo;
private Type type;
private AccessibleObject accessor;
private QualifiedName qualifiedName;
private ValueConstraintsInstance constraints;
private ValueConstraintsInstance associationConstraints;
private boolean queryable;
private boolean immutable;
private boolean aggregated;
private AssociationInfo builderInfo;
public AssociationModel( AccessibleObject accessor,
ValueConstraintsInstance valueConstraintsInstance,
ValueConstraintsInstance associationConstraintsInstance,
MetaInfo metaInfo
)
{
this.metaInfo = metaInfo;
this.constraints = valueConstraintsInstance;
this.associationConstraints = associationConstraintsInstance;
this.accessor = accessor;
initialize();
}
private void initialize()
{
this.type = GenericAssociationInfo.getAssociationType( accessor );
this.qualifiedName = QualifiedName.fromAccessor( accessor );
this.immutable = metaInfo.get( Immutable.class ) != null;
this.aggregated = metaInfo.get( Aggregated.class ) != null;
final Queryable queryable = accessor.getAnnotation( Queryable.class );
this.queryable = queryable == null || queryable.value();
}
public <T> T metaInfo( Class<T> infoType )
{
return metaInfo.get( infoType );
}
public QualifiedName qualifiedName()
{
return qualifiedName;
}
public Type type()
{
return type;
}
public boolean isImmutable()
{
return immutable;
}
public boolean isAggregated()
{
return aggregated;
}
public AccessibleObject accessor()
{
return accessor;
}
@Override
public boolean queryable()
{
return queryable;
}
public AssociationInfo getBuilderInfo()
{
return builderInfo;
}
@Override
public <ThrowableType extends Throwable> boolean accept( Visitor<? super AssociationModel, ThrowableType> visitor ) throws ThrowableType
{
return visitor.visit( this );
}
public void checkConstraints( Object value )
throws ConstraintViolationException
{
if( constraints != null )
{
List<ConstraintViolation> violations = constraints.checkConstraints( value );
if( !violations.isEmpty() )
{
throw new ConstraintViolationException( "", "<unknown>", (Member) accessor, violations );
}
}
}
public void checkAssociationConstraints( Association<?> association)
throws ConstraintViolationException
{
if( associationConstraints != null )
{
List<ConstraintViolation> violations = associationConstraints.checkConstraints( association );
if( !violations.isEmpty() )
{
throw new ConstraintViolationException( (Composite) association.get(), (Member) accessor, violations );
}
}
}
@Override
public void bind( Resolution resolution ) throws BindingException
{
builderInfo = new AssociationInfo()
{
@Override
public boolean isImmutable()
{
return false;
}
@Override
public QualifiedName qualifiedName()
{
return qualifiedName;
}
@Override
public Type type()
{
return type;
}
@Override
public void checkConstraints( Object value ) throws ConstraintViolationException
{
AssociationModel.this.checkConstraints( value );
}
};
if (type instanceof TypeVariable)
{
type = Classes.resolveTypeVariable( (TypeVariable) type, ((Member)accessor).getDeclaringClass(), resolution.model().type());
}
}
public boolean equals( Object o )
{
if( this == o )
{
return true;
}
if( o == null || getClass() != o.getClass() )
{
return false;
}
AssociationModel that = (AssociationModel) o;
if( !accessor.equals( that.accessor ) )
{
return false;
}
return true;
}
public int hashCode()
{
return accessor.hashCode();
}
@Override
public String toString()
{
if (accessor instanceof Field )
return ((Field)accessor).toGenericString();
else
return ((Method)accessor).toGenericString();
}
}