com.ovea.tadjin.util.PartResource Maven / Gradle / Ivy

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/**
 * Copyright (C) 2011 Ovea 
 *
 * Licensed 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 com.ovea.tadjin.util;

import javax.mail.MessagingException;
import javax.mail.Part;
import java.io.InputStream;

public final class PartResource extends Resource.ReadOnlyBufferBasedResource {

    private final Part part;

    private PartResource(Part part) {
        this.part = part;
    }

    @Override
    public InputStream read() {
        try {
            return part.getInputStream();
        } catch (Exception e) {
            throw new ResourceException(this, e.getMessage(), e);
        }
    }

    @Override
    public String toString() {
        try {
            return part.getDescription();
        } catch (MessagingException e) {
            return "";
        }
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        PartResource that = (PartResource) o;
        return part.equals(that.part);
    }

    @Override
    public int hashCode() {
        return part.hashCode();
    }

    public static Resource from(Part part) {
        return new PartResource(part);
    }

}