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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;
public class SimpleEntityRef implements EntityRef {
public static final UUID NULL_ID = new UUID(0, 0);
protected final String type;
protected final UUID id;
public SimpleEntityRef(UUID id) {
this.id = id;
type = null;
}
public SimpleEntityRef(String type, UUID id) {
this.type = type;
this.id = id;
}
public SimpleEntityRef(EntityRef entityRef) {
type = entityRef.getType();
id = entityRef.getUuid();
}
public static EntityRef ref() {
return new SimpleEntityRef(null, null);
}
@Override
public UUID getUuid() {
return id;
}
@Override
public String getType() {
return type;
}
public static EntityRef ref(String entityType, UUID entityId) {
return new SimpleEntityRef(entityType, entityId);
}
public static EntityRef ref(UUID entityId) {
return new SimpleEntityRef(null, entityId);
}
public static EntityRef ref(EntityRef ref) {
return new SimpleEntityRef(ref);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((id == null) ? 0 : id.hashCode());
result = prime * result + ((type == null) ? 0 : type.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
SimpleEntityRef other = (SimpleEntityRef) obj;
if (id == null) {
if (other.id != null) {
return false;
}
} else if (!id.equals(other.id)) {
return false;
}
if (type == null) {
if (other.type != null) {
return false;
}
} else if (!type.equals(other.type)) {
return false;
}
return true;
}
@Override
public String toString() {
if ((type == null) && (id == null)) {
return "EntityRef(" + NULL_ID.toString() + ")";
}
if (type == null) {
return "EntityRef(" + id.toString() + ")";
}
return type + "(" + id + ")";
}
public static UUID getUuid(EntityRef ref) {
if (ref == null) {
return null;
}
return ref.getUuid();
}
public static String getType(EntityRef ref) {
if (ref == null) {
return null;
}
return ref.getType();
}
}