io.atlasmap.converters.CharacterConverter Maven / Gradle / Ivy

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/**
 * Copyright (C) 2017 Red Hat, Inc.
 * 
 * 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 io.atlasmap.converters;

import io.atlasmap.api.AtlasConversionException;
import io.atlasmap.spi.AtlasConversionConcern;
import io.atlasmap.spi.AtlasConversionInfo;
import io.atlasmap.spi.AtlasPrimitiveConverter;
import io.atlasmap.v2.FieldType;

public class CharacterConverter implements AtlasPrimitiveConverter {

    private static final String TRUE_REGEX = "t|T|y|Y|1";

    /**
     * @param value
     * @return
     * @throws AtlasConversionException
     */
    @Override
    @AtlasConversionInfo(sourceType = FieldType.CHAR, targetType = FieldType.BOOLEAN, concerns = {
            AtlasConversionConcern.CONVENTION })
    public Boolean convertToBoolean(Character value, String sourceFormat, String targetFormat)
            throws AtlasConversionException {
        if (value == null) {
            return null;
        }

        String regex = sourceFormat != null && !"".equals(sourceFormat) ? sourceFormat : TRUE_REGEX;
        if (Character.toString(value).matches(regex)) {
            return Boolean.TRUE;
        } else {
            return Boolean.FALSE;
        }
    }

    /**
     * @param value
     * @return
     * @throws AtlasConversionException
     */
    @Override
    @AtlasConversionInfo(sourceType = FieldType.CHAR, targetType = FieldType.BYTE, concerns = {
            AtlasConversionConcern.RANGE })
    public Byte convertToByte(Character value) throws AtlasConversionException {
        if (value == null) {
            return null;
        }
        if (value.charValue() > Byte.MAX_VALUE) {
            throw new AtlasConversionException(
                    String.format("Character value %s is greater than BYTE.MAX_VALUE", value.charValue()));
        } else {
            return (byte) value.charValue();
        }
    }

    /**
     * @param value
     * @return
     * @throws AtlasConversionException
     */
    @Override
    @AtlasConversionInfo(sourceType = FieldType.CHAR, targetType = FieldType.CHAR)
    public Character convertToCharacter(Character value) throws AtlasConversionException {
        if (value == null) {
            return null;
        }
        // we want new Character from the value
        return new Character(value);
    }

    /**
     * @param value
     * @return
     * @throws AtlasConversionException
     */
    @Override
    @AtlasConversionInfo(sourceType = FieldType.CHAR, targetType = FieldType.DOUBLE)
    public Double convertToDouble(Character value) throws AtlasConversionException {
        if (value == null) {
            return null;
        }
        return Double.valueOf(value);
    }

    /**
     * @param value
     * @return
     * @throws AtlasConversionException
     */
    @Override
    @AtlasConversionInfo(sourceType = FieldType.CHAR, targetType = FieldType.FLOAT)
    public Float convertToFloat(Character value) throws AtlasConversionException {
        if (value == null) {
            return null;
        }
        return Float.valueOf(value);
    }

    /**
     * @param value
     * @return
     * @throws AtlasConversionException
     */
    @Override
    @AtlasConversionInfo(sourceType = FieldType.CHAR, targetType = FieldType.INTEGER)
    public Integer convertToInteger(Character value) throws AtlasConversionException {
        if (value == null) {
            return null;
        }
        return Integer.valueOf(value);
    }

    /**
     * @param value
     * @return
     * @throws AtlasConversionException
     */
    @Override
    @AtlasConversionInfo(sourceType = FieldType.CHAR, targetType = FieldType.LONG)
    public Long convertToLong(Character value) throws AtlasConversionException {
        if (value == null) {
            return null;
        }
        return Long.valueOf(value);
    }

    /**
     * @param value
     * @return
     * @throws AtlasConversionException
     */
    @Override
    @AtlasConversionInfo(sourceType = FieldType.CHAR, targetType = FieldType.SHORT, concerns = {
            AtlasConversionConcern.RANGE, AtlasConversionConcern.CONVENTION })
    public Short convertToShort(Character value) throws AtlasConversionException {
        if (value == null) {
            return null;
        }
        // only care if the char is larger than the short MAX
        if (value > Short.MAX_VALUE) {
            throw new AtlasConversionException();
        }
        return (short) value.charValue();
    }

    /**
     * @param value
     * @return
     * @throws AtlasConversionException
     */
    @Override
    @AtlasConversionInfo(sourceType = FieldType.CHAR, targetType = FieldType.STRING)
    public String convertToString(Character value, String sourceFormat, String targetFormat)
            throws AtlasConversionException {
        if (value == null) {
            return null;
        }
        return String.valueOf(value);
    }
}