com.frank.search.solr.core.schema.MappingJacksonResponseParser.java Source code

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Here is the source code for com.frank.search.solr.core.schema.MappingJacksonResponseParser.java

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/*
 * Copyright 2014 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
 *
 *      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.frank.search.solr.core.schema;

import org.apache.solr.client.solrj.ResponseParser;
import org.apache.solr.common.util.NamedList;
import org.springframework.dao.InvalidDataAccessResourceUsageException;
import org.springframework.util.StreamUtils;

import javax.activation.MimeType;
import javax.activation.MimeTypeParseException;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.nio.charset.Charset;

/**
 * @author Christoph Strobl
 * @since 1.3
 */
public class MappingJacksonResponseParser extends ResponseParser {

    private static final String WRITER = "json";

    private final MimeType responseType;

    public MappingJacksonResponseParser() {
        this(defaultMimeType());
    }

    public MappingJacksonResponseParser(MimeType responseType) {
        this.responseType = responseType != null ? responseType : defaultMimeType();
    }

    @Override
    public String getWriterType() {
        return WRITER;
    }

    @Override
    public String getContentType() {
        return responseType.toString();
    }

    @Override
    public String getVersion() {
        return super.getVersion();
    }

    @Override
    public NamedList<Object> processResponse(InputStream body, String encoding) {

        NamedList<Object> result = new NamedList<Object>();
        try {
            result.add("json", StreamUtils.copyToString(body, Charset.forName(encoding)));
        } catch (IOException e) {
            throw new InvalidDataAccessResourceUsageException("Unable to read json from stream.", e);
        }
        return result;
    }

    @Override
    public NamedList<Object> processResponse(Reader reader) {
        throw new UnsupportedOperationException();
    }

    private static MimeType defaultMimeType() {
        try {
            return new MimeType("application", "json");
        } catch (MimeTypeParseException o_O) {
            throw new IllegalArgumentException(o_O);
        }
    }

}