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* 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
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* KIND, either express or implied. See the License for the
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package org.apache.cayenne.reflect.generic;
import org.apache.cayenne.Fault;
import org.apache.cayenne.Persistent;
import org.apache.cayenne.ValueHolder;
import org.apache.cayenne.map.ObjRelationship;
import org.apache.cayenne.reflect.ArcProperty;
import org.apache.cayenne.reflect.ClassDescriptor;
import org.apache.cayenne.reflect.PropertyException;
import org.apache.cayenne.reflect.PropertyVisitor;
import org.apache.cayenne.reflect.ToManyProperty;
/**
* @since 3.0
*/
class DataObjectToManyProperty extends DataObjectBaseProperty implements ToManyProperty {
protected ObjRelationship relationship;
protected String reverseName;
protected String reverseDbPath;
protected ClassDescriptor targetDescriptor;
protected Fault fault;
DataObjectToManyProperty(ObjRelationship relationship, ClassDescriptor targetDescriptor, Fault fault) {
this.relationship = relationship;
this.targetDescriptor = targetDescriptor;
this.reverseName = relationship.getReverseRelationshipName();
this.fault = fault;
}
public ArcProperty getComplimentaryReverseArc() {
return reverseName != null ? (ArcProperty) targetDescriptor.getProperty(reverseName) : null;
}
public ClassDescriptor getTargetDescriptor() {
return targetDescriptor;
}
@Override
public String getComplimentaryReverseDbRelationshipPath() {
if (reverseDbPath == null) {
reverseDbPath = relationship.getReverseDbRelationshipPath();
}
return reverseDbPath;
}
@Override
public String getName() {
return relationship.getName();
}
public ObjRelationship getRelationship() {
return relationship;
}
public void addTarget(Object source, Object target, boolean setReverse) throws PropertyException {
try {
toDataObject(source).addToManyTarget(getName(), toDataObject(target), setReverse);
} catch (Throwable th) {
throw new PropertyException("Error setting to-many DataObject property: " + getName(), this, source, th);
}
}
public void removeTarget(Object source, Object target, boolean setReverse) throws PropertyException {
try {
toDataObject(source).removeToManyTarget(getName(), toDataObject(target), setReverse);
} catch (Throwable th) {
throw new PropertyException("Error unsetting to-many DataObject property: " + getName(), this, source, th);
}
}
@Override
public void injectValueHolder(Object object) throws PropertyException {
if (readPropertyDirectly(object) == null) {
writePropertyDirectly(object, null, fault.resolveFault((Persistent) object, getName()));
}
}
public boolean isFault(Object source) {
return readPropertyDirectly(source) instanceof Fault;
}
@Override
public boolean visit(PropertyVisitor visitor) {
return visitor.visitToMany(this);
}
public void invalidate(Object object) {
Object value = readPropertyDirectly(object);
if (value instanceof Fault) {
// nothing to do
} else if (value instanceof ValueHolder) {
((ValueHolder) value).invalidate();
} else {
writePropertyDirectly(object, null, fault);
}
}
public void addTargetDirectly(Object source, Object target) throws PropertyException {
addTarget(source, target, false);
}
public void removeTargetDirectly(Object source, Object target) throws PropertyException {
removeTarget(source, target, false);
}
}