com.vaadin.server.CompositeErrorMessage Maven / Gradle / Ivy
/*
* Copyright (C) 2000-2024 Vaadin Ltd
*
* This program is available under Vaadin Commercial License and Service Terms.
*
* See for the full
* license.
*/
package com.vaadin.server;
import java.util.Collection;
import java.util.Iterator;
import com.vaadin.shared.ui.ErrorLevel;
/**
* Class for combining multiple error messages together.
*
* @author Vaadin Ltd
* @since 3.0
*/
@SuppressWarnings("serial")
public class CompositeErrorMessage extends AbstractErrorMessage {
/**
* Constructor for CompositeErrorMessage.
*
* @param errorMessages
* the array of error messages that are listed together. Nulls
* are ignored, but at least one message is required.
*/
public CompositeErrorMessage(ErrorMessage... errorMessages) {
super(null);
setErrorLevel(ErrorLevel.INFO);
for (ErrorMessage errorMessage : errorMessages) {
addErrorMessage(errorMessage);
}
if (getCauses().isEmpty()) {
throw new IllegalArgumentException(
"Composite error message must have at least one error");
}
}
/**
* Constructor for CompositeErrorMessage.
*
* @param errorMessages
* the Collection of error messages that are listed together. At
* least one message is required.
*/
public CompositeErrorMessage(
Collection errorMessages) {
super(null);
setErrorLevel(ErrorLevel.INFO);
for (ErrorMessage errorMessage : errorMessages) {
addErrorMessage(errorMessage);
}
if (getCauses().isEmpty()) {
throw new IllegalArgumentException(
"Composite error message must have at least one error");
}
}
/**
* Adds a error message into this composite message. Updates the level
* field.
*
* @param error
* the error message to be added. Duplicate errors are ignored.
*/
private void addErrorMessage(ErrorMessage error) {
if (error != null && !getCauses().contains(error)) {
addCause(error);
if (error.getErrorLevel().intValue() > getErrorLevel().intValue()) {
setErrorLevel(error.getErrorLevel());
}
}
}
/**
* Gets Error Iterator.
*
* @return the error iterator.
*/
public Iterator iterator() {
return getCauses().iterator();
}
/**
* Returns a comma separated list of the error messages.
*
* @return String, comma separated list of error messages.
*/
@Override
public String toString() {
String retval = "[";
int pos = 0;
for (ErrorMessage errorMessage : getCauses()) {
if (pos > 0) {
retval += ",";
}
pos++;
retval += errorMessage.toString();
}
retval += "]";
return retval;
}
}