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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.protect;
/**
* An error message with a code.
* This class should be treated as immutable.
*
* @author bratseth
*/
public class ErrorMessage {
/** An error code */
protected int code;
/** The short message of this error, always set */
protected String message;
/** The detailed instance message of this error, not always set */
protected String detailedMessage = null;
/** The cause of this error, or null if none is recorded */
protected Throwable cause = null;
/**
* Create an invalid instance for a subclass to initialize.
*/
public ErrorMessage() {
}
public ErrorMessage(int code, String message) {
this.code = code;
this.message = message;
}
/**
* Create an application specific error message with an application
* specific code
*/
public ErrorMessage(int code, String message, String detailedMessage) {
this(code, message);
this.detailedMessage = detailedMessage;
}
/** Create an application specific error message with an application specific code */
public ErrorMessage(int code, String message, String detailedMessage, Throwable cause) {
this(code, message, detailedMessage);
this.cause = cause;
}
public int getCode() {
return code;
}
public String getMessage() {
return message;
}
/** Returns the detailed message, or null if there is no detailed message */
public String getDetailedMessage() {
return detailedMessage;
}
/**
* Sets the cause of this. This should be set on errors which likely have their origin in plugin component code,
* not on others.
*/
public void setCause(Throwable cause) { this.cause=cause; }
/** Returns the cause of this, or null if none is set */
public Throwable getCause() { return cause; }
public int hashCode() {
return code * 7 + message.hashCode() + (detailedMessage == null ? 0 : 17 * detailedMessage.hashCode());
}
/**
* Two error messages are equal if they have the same code and message.
* The cause is ignored in the comparison.
*/
@Override
public boolean equals(Object o) {
if (!(o instanceof ErrorMessage)) return false;
ErrorMessage other = (ErrorMessage) o;
if (this.code != other.code) return false;
if (!this.message.equals(other.message)) return false;
if (this.detailedMessage==null) return other.detailedMessage==null;
if (other.detailedMessage==null) return false;
return this.detailedMessage.equals(other.detailedMessage);
}
@Override
public String toString() {
String details = "";
if (detailedMessage != null) {
details = detailedMessage;
}
if (cause !=null) {
if (details.length()>0)
details+=": ";
details+= com.yahoo.yolean.Exceptions.toMessageString(cause);
}
if (details.length()>0)
details=" (" + details + ")";
return "error : " + message + details;
}
}
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