BigDecimalPatternFormatFactory.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * 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.
 */
package org.apache.camel.dataformat.bindy.format.factories;

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.text.DecimalFormat;
import java.util.Locale;
import org.apache.camel.dataformat.bindy.Format;
import org.apache.camel.dataformat.bindy.FormattingOptions;
import org.apache.camel.dataformat.bindy.format.NumberPatternFormat;
import org.apache.camel.util.ObjectHelper;

public class BigDecimalPatternFormatFactory extends AbstractFormatFactory {

    {
        supportedClasses.add(BigDecimal.class);
    }

    @Override
    public boolean canBuild(FormattingOptions formattingOptions) {
        return super.canBuild(formattingOptions) && ObjectHelper.isNotEmpty(formattingOptions.getPattern());
    }

    @Override
    public Format<?> build(FormattingOptions formattingOptions) {
        return new BigDecimalPatternFormat(formattingOptions.getPattern(),
                formattingOptions.getLocale(),
                formattingOptions.getPrecision(),
                formattingOptions.getRounding(),
                formattingOptions.getDecimalSeparator(),
                formattingOptions.getGroupingSeparator());
    }

    private static class BigDecimalPatternFormat extends NumberPatternFormat<BigDecimal> {

        BigDecimalPatternFormat(String pattern, Locale locale, int precision, String rounding, String decimalSeparator, String groupingSeparator) {
            super(pattern, locale, precision, rounding, decimalSeparator, groupingSeparator);
        }

        @Override
        public BigDecimal parse(String string) throws Exception {
            if (getNumberFormat() != null) {
                DecimalFormat df = (DecimalFormat)getNumberFormat();
                df.setParseBigDecimal(true);
                BigDecimal bd = (BigDecimal)df.parse(string.trim());
                if (super.getPrecision() != -1) {
                    bd = bd.setScale(super.getPrecision(), RoundingMode.valueOf(super.getRounding()));
                }
                return bd;
            } else {
                return new BigDecimal(string.trim());
            }
        }
    }

}