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 * you may not use this file except in compliance with the License.
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package io.undertow.attribute;

import io.undertow.server.HttpServerExchange;

Exchange attribute that represents a combination of attributes that should be merged into a single string.
Author:Stuart Douglas
/** * Exchange attribute that represents a combination of attributes that should be merged into a single string. * * @author Stuart Douglas */
public class CompositeExchangeAttribute implements ExchangeAttribute { private final ExchangeAttribute[] attributes; public CompositeExchangeAttribute(ExchangeAttribute[] attributes) { ExchangeAttribute[] copy = new ExchangeAttribute[attributes.length]; System.arraycopy(attributes, 0, copy, 0, attributes.length); this.attributes = copy; } @Override public String readAttribute(HttpServerExchange exchange) { final StringBuilder sb = new StringBuilder(); for (int i = 0; i < attributes.length; ++i) { final String val = attributes[i].readAttribute(exchange); if(val != null) { sb.append(val); } } return sb.toString(); } @Override public void writeAttribute(HttpServerExchange exchange, String newValue) throws ReadOnlyAttributeException { throw new ReadOnlyAttributeException("combined", newValue); } @Override public String toString() { final StringBuilder sb = new StringBuilder(); for (int i = 0; i < attributes.length; ++i) { sb.append(attributes[i].toString()); } return sb.toString(); } }