com.logsniffer.fields.FieldJsonMapper.java Source code

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Here is the source code for com.logsniffer.fields.FieldJsonMapper.java

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/*******************************************************************************
 * logsniffer, open source tool for viewing, monitoring and analysing log data.
 * Copyright (c) 2015 Scaleborn UG, www.scaleborn.com
 *
 * logsniffer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * logsniffer 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package com.logsniffer.fields;

import org.apache.commons.lang3.tuple.Pair;

/**
 * Mapps fields Java type to a serializable / deserializable type.
 * 
 * @author mbok
 * 
 */
public class FieldJsonMapper {
    /**
     * Resolves the Java type from given serialized type.
     * 
     * @param type
     *            the simple type
     * @return the Java type if deserialization is supported for this type
     *         otherwise null
     */
    @SuppressWarnings("unchecked")
    public <T> Class<T> resolveDeserializationType(final String type) {
        try {
            if (type != null) {
                final FieldBaseTypes baseType = FieldBaseTypes.valueOf(type);
                return (Class<T>) baseType.getDeserializationType();
            }
        } catch (final IllegalArgumentException e) {
            // Accepted
        }
        return null;
    }

    /**
     * Resolves the type name and serialize as class from current field value,
     * the first used later for correct deserialization. The serialize as class
     * can be null, which indicates that serialization should follow without
     * type indication.
     * 
     * @param fieldValue
     *            field value
     * @return simple type, in worst case {@link FieldBaseTypes#OBJECT} is
     *         always returned as fallback
     */
    public <T> Pair<String, Class<Object>> resolveSerializationType(final T fieldValue) {
        final FieldBaseTypes type = FieldBaseTypes.resolveType(fieldValue);
        return Pair.of(type.name(), type.getSerializationType());
    }
}