org.grails.databinding.converters.web.LocaleAwareBigDecimalConverter.groovy Maven / Gradle / Ivy

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/*
 * Copyright 2013-2022 the original author or authors.
 *
 * 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
 *
 *      https://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.grails.databinding.converters.web

import java.text.DecimalFormat
import java.text.NumberFormat

import groovy.transform.CompileStatic

/**
 * A ValueConverter that knows how to convert a String to a BigDecimal or a BigInteger and is Locale aware.  The
 * converter will use the Locale of the current request if being invoked as part of a
 * request, otherwise will use Locale.getDefault().
 *
 * @author Jeff Brown
 * @since 2.3
 */
@CompileStatic
class LocaleAwareBigDecimalConverter extends LocaleAwareNumberConverter {

    @Override
    protected NumberFormat getNumberFormatter() {
        def nf = super.getNumberFormatter()
        if (!(nf instanceof DecimalFormat)) {
            throw new IllegalStateException("Cannot support non-DecimalFormat: $nf")
        }

        ((DecimalFormat) nf).setParseBigDecimal(true)
        nf
    }

}