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Core services for Usergrid system.
/*******************************************************************************
* Copyright 2012 Apigee Corporation
*
* 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.usergrid.persistence;
import java.util.UUID;
import org.usergrid.persistence.cassandra.CassandraPersistenceUtils;
public class SimpleCollectionRef implements CollectionRef {
public static final String MEMBER_ENTITY_TYPE = "member";
protected final EntityRef ownerRef;
protected final String collectionName;
protected final EntityRef itemRef;
protected final String type;
protected final UUID id;
public SimpleCollectionRef(EntityRef ownerRef, String collectionName,
EntityRef itemRef) {
this.ownerRef = ownerRef;
this.collectionName = collectionName;
this.itemRef = itemRef;
type = itemRef.getType() + ":" + MEMBER_ENTITY_TYPE;
id = CassandraPersistenceUtils.keyID(ownerRef.getUuid(), collectionName, itemRef.getUuid());
}
@Override
public EntityRef getOwnerEntity() {
return ownerRef;
}
@Override
public String getCollectionName() {
return collectionName;
}
@Override
public EntityRef getItemRef() {
return itemRef;
}
@Override
public UUID getUuid() {
return id;
}
@Override
public String getType() {
return type;
}
@Override
public String toString() {
if ((type == null) && (id == null)) {
return "CollectionRef(" + SimpleEntityRef.NULL_ID.toString() + ")";
}
if (type == null) {
return "CollectionRef(" + id.toString() + ")";
}
return type + "(" + id + "," + ownerRef + "," + collectionName + ","
+ itemRef + ")";
}
}