org.springframework.web.reactive.resource.TransformedResource.java Source code

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Here is the source code for org.springframework.web.reactive.resource.TransformedResource.java

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/*
 * Copyright 2002-2018 the original author or authors.
 *
 * 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
 *
 *      https://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 org.springframework.web.reactive.resource;

import java.io.IOException;

import org.springframework.core.io.ByteArrayResource;
import org.springframework.core.io.Resource;
import org.springframework.lang.Nullable;

/**
 * An extension of {@link ByteArrayResource} that a {@link ResourceTransformer}
 * can use to represent an original resource preserving all other information
 * except the content.
 *
 * @author Rossen Stoyanchev
 * @since 5.0
 */
public class TransformedResource extends ByteArrayResource {

    @Nullable
    private final String filename;

    private final long lastModified;

    public TransformedResource(Resource original, byte[] transformedContent) {
        super(transformedContent);
        this.filename = original.getFilename();
        try {
            this.lastModified = original.lastModified();
        } catch (IOException ex) {
            // should never happen
            throw new IllegalArgumentException(ex);
        }
    }

    @Override
    @Nullable
    public String getFilename() {
        return this.filename;
    }

    @Override
    public long lastModified() {
        return this.lastModified;
    }

}