package io.ebean.bean;
import java.io.Serializable;
Identifies a unique node of an object graph.
It represents a location relative to the root of an object graph and specific
to a query and call stack hash.
/**
* Identifies a unique node of an object graph.
* <p>
* It represents a location relative to the root of an object graph and specific
* to a query and call stack hash.
* </p>
*/
public final class ObjectGraphNode implements Serializable {
private static final long serialVersionUID = 2087081778650228996L;
Identifies the origin.
/**
* Identifies the origin.
*/
private final ObjectGraphOrigin originQueryPoint;
The path relative to the root.
/**
* The path relative to the root.
*/
private final String path;
Create at a sub level.
/**
* Create at a sub level.
*/
public ObjectGraphNode(ObjectGraphNode parent, String path) {
this.originQueryPoint = parent.getOriginQueryPoint();
this.path = parent.getChildPath(path);
}
Create an the root level.
/**
* Create an the root level.
*/
public ObjectGraphNode(ObjectGraphOrigin originQueryPoint, String path) {
this.originQueryPoint = originQueryPoint;
this.path = path;
}
Return the origin query point.
/**
* Return the origin query point.
*/
public ObjectGraphOrigin getOriginQueryPoint() {
return originQueryPoint;
}
private String getChildPath(String childPath) {
if (path == null) {
return childPath;
} else if (childPath == null) {
return path;
} else {
return path + "." + childPath;
}
}
Return the path relative to the root.
/**
* Return the path relative to the root.
*/
public String getPath() {
return path;
}
@Override
public String toString() {
return "origin:" + originQueryPoint + " path[" + path + "]";
}
@Override
public int hashCode() {
int hc = 92821 * originQueryPoint.hashCode();
hc = 92821 * hc + (path == null ? 0 : path.hashCode());
return hc;
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof ObjectGraphNode)) {
return false;
}
ObjectGraphNode e = (ObjectGraphNode) obj;
//noinspection StringEquality
return ((e.path == path) || (e.path != null && e.path.equals(path)))
&& e.originQueryPoint.equals(originQueryPoint);
}
}