com.cedarsoft.serialization.jackson.NumberSerializer.java Source code

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Here is the source code for com.cedarsoft.serialization.jackson.NumberSerializer.java

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/**
 * Copyright (C) cedarsoft GmbH.
 *
 * Licensed under the GNU General Public License version 3 (the "License")
 * with Classpath Exception; you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *         http://www.cedarsoft.org/gpl3ce
 *         (GPL 3 with Classpath Exception)
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 3 only, as
 * published by the Free Software Foundation. cedarsoft GmbH designates this
 * particular file as subject to the "Classpath" exception as provided
 * by cedarsoft GmbH in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 3 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 3 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact cedarsoft GmbH, 72810 Gomaringen, Germany,
 * or visit www.cedarsoft.com if you need additional information or
 * have any questions.
 */

package com.cedarsoft.serialization.jackson;

import com.cedarsoft.version.Version;
import com.cedarsoft.version.VersionException;
import com.cedarsoft.version.VersionRange;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;

import javax.annotation.Nonnull;
import javax.inject.Inject;
import java.io.IOException;

/**
 * Serializes/deserializes a number
 */
public class NumberSerializer extends AbstractJacksonSerializer<Number> {
    @Inject
    public NumberSerializer() {
        super("number", VersionRange.single(1, 0, 0));
    }

    @Override
    public void serialize(@Nonnull JsonGenerator serializeTo, @Nonnull Number object,
            @Nonnull Version formatVersion) throws IOException, VersionException, JsonProcessingException {
        if (isIntegerNumber(object)) {
            serializeTo.writeNumber(object.longValue());
        } else {
            serializeTo.writeNumber(object.doubleValue());
        }
    }

    private static boolean isIntegerNumber(@Nonnull Number object) {
        //noinspection OverlyComplexBooleanExpression
        return object instanceof Integer || object instanceof Long || object instanceof Byte
                || object instanceof Short;
    }

    @Nonnull
    @Override
    public Number deserialize(@Nonnull JsonParser deserializeFrom, @Nonnull Version formatVersion)
            throws IOException, VersionException, JsonProcessingException {
        return deserializeFrom.getNumberValue();
    }

    @Override
    public boolean isObjectType() {
        return false;
    }
}