forked from apache/falcon
/
Entity.java
98 lines (83 loc) · 2.91 KB
/
Entity.java
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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.falcon.entity.v0;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import java.io.StringReader;
import java.io.StringWriter;
/**
* Base class that all entity jaxb object will extend.
*/
public abstract class Entity {
public abstract String getName();
public abstract String getTags();
public abstract AccessControlList getACL();
public EntityType getEntityType() {
for (EntityType type : EntityType.values()) {
if (type.getEntityClass().equals(getClass())) {
return type;
}
}
return null;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || !o.getClass().equals(this.getClass())) {
return false;
}
Entity entity = (Entity) o;
String name = getName();
return !(name != null ? !name.equals(entity.getName()) : entity.getName() != null);
}
@Override
public int hashCode() {
String clazz = this.getClass().getName();
String name = getName();
int result = name != null ? name.hashCode() : 0;
result = 31 * result + clazz.hashCode();
return result;
}
@Override
public String toString() {
try {
StringWriter stringWriter = new StringWriter();
Marshaller marshaller = getEntityType().getMarshaller();
marshaller.marshal(this, stringWriter);
return stringWriter.toString();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static Entity fromString(EntityType type, String str) {
try {
Unmarshaller unmarshaler = type.getUnmarshaller();
return (Entity) unmarshaler.unmarshal(new StringReader(str));
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public String toShortString() {
return "(" + getEntityType().name().toLowerCase() + ") " + getName();
}
public Entity copy() {
return fromString(getEntityType(), toString());
}
}