org.apache.abdera.ext.json.JSONWriter Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of abdera-extensions-json
Atom Specification Extensions - JSON
There is a newer version: 1.1.3
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  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.  For additional information regarding
 * copyright in this work, please see the NOTICE file in the top level
 * directory of this distribution.
 */

package org.apache.abdera.ext.json;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

import org.apache.abdera.model.Base;
import org.apache.abdera.util.AbstractNamedWriter;
import org.apache.abdera.util.AbstractWriterOptions;
import org.apache.abdera.writer.NamedWriter;
import org.apache.abdera.writer.WriterOptions;

public class JSONWriter extends AbstractNamedWriter implements NamedWriter {

    public static final String NAME = "json";

    public static final String[] FORMATS =
        {"application/json", "application/javascript", "application/ecmascript", "text/javascript", "text/ecmascript"};

    public JSONWriter() {
        super(NAME, FORMATS);
    }

    @Override
    protected WriterOptions initDefaultWriterOptions() {
        return new AbstractWriterOptions() {
        };
    }

    public String getName() {
        return NAME;
    }

    public Object write(Base base, WriterOptions options) throws IOException {
        try {
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            writeTo(base, out, options);
            return new String(out.toByteArray(), options.getCharset());
        } catch (IOException i) {
            throw i;
        } catch (Exception e) {
            throw new IOException(e.getMessage());
        }
    }

    public void writeTo(Base base, OutputStream out, WriterOptions options) throws IOException {
        writeTo(base, new OutputStreamWriter(out, options.getCharset()), options);
    }

    public void writeTo(Base base, java.io.Writer out, WriterOptions options) throws IOException {
        try {
            JSONUtil.toJson(base, out);
            out.flush();
            if (options.getAutoClose())
                out.close();
        } catch (Exception e) {
            e.printStackTrace();
            throw new IOException(e.getMessage());
        }
    }

}