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Javamail 1.6 API Specification
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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 javax.mail.search;

import javax.mail.Message;
import javax.mail.MessagingException;

/**
 * @version $Rev$ $Date$
 */
public final class HeaderTerm extends StringTerm {
	
	private static final long serialVersionUID = 8342514650333389122L;
	
    private final String headerName;

    public HeaderTerm(final String header, final String pattern) {
        super(pattern);
        this.headerName = header;
    }

    public String getHeaderName() {
        return headerName;
    }

    @Override
    public boolean match(final Message message) {
        try {
            final String values[] = message.getHeader(headerName);
            if (values != null) {
                for (int i = 0; i < values.length; i++) {
                    final String value = values[i];
                    if (match(value)) {
                        return true;
                    }
                }
            }
            return false;
        } catch (final MessagingException e) {
            return false;
        }
    }

    @Override
    public boolean equals(final Object other) {
        if (other == this) {
			return true;
		}
        if (other instanceof HeaderTerm == false) {
			return false;
		}
        // we need to compare with more than just the header name. 
        return headerName.equalsIgnoreCase(((HeaderTerm) other).headerName) && super.equals(other);
    }

    @Override
    public int hashCode() {
        return headerName.toLowerCase().hashCode() + super.hashCode();
    }
}