beliefer commented on a change in pull request #35060: URL: https://github.com/apache/spark/pull/35060#discussion_r786436785
########## File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/NumberConstants.scala ########## @@ -0,0 +1,244 @@ +/* + * 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.spark.sql.catalyst.util + +import java.math.BigDecimal +import java.text.{DecimalFormat, ParsePosition} +import java.util.Locale + +import org.apache.spark.sql.AnalysisException +import org.apache.spark.sql.catalyst.analysis.TypeCheckResult +import org.apache.spark.sql.errors.QueryExecutionErrors +import org.apache.spark.sql.types.{Decimal, DecimalType} +import org.apache.spark.unsafe.types.UTF8String + +object NumberConstants { + final val POINT_SIGN = '.' + final val POINT_LETTER = 'D' + final val COMMA_SIGN = ',' + final val COMMA_LETTER = 'G' + final val MINUS_SIGN = '-' + final val MINUS_LETTER = 'S' + final val DOLLAR_SIGN = '$' + final val NINE_DIGIT = '9' + final val ZERO_DIGIT = '0' + final val POUND_SIGN = '#' + + final val COMMA_SIGN_STRING = COMMA_SIGN.toString + final val POUND_SIGN_STRING = POUND_SIGN.toString + + final val SIGN_SET = Set(POINT_SIGN, COMMA_SIGN, MINUS_SIGN, DOLLAR_SIGN) +} + +class NumberFormatter(originNumberFormat: String) extends Serializable { + import NumberConstants._ + + protected val normalizedNumberFormat = normalize(originNumberFormat) + + private val transformedFormat = transform(normalizedNumberFormat) + + private lazy val numberDecimalFormat = { + val decimalFormat = new DecimalFormat(transformedFormat) + decimalFormat.setParseBigDecimal(true) + decimalFormat + } + + private val precision = normalizedNumberFormat.filterNot(isSign).length + + private val scale = { + val formatSplits = normalizedNumberFormat.split(POINT_SIGN) + if (formatSplits.length == 1) { + 0 + } else { + formatSplits(1).filterNot(isSign).length + } + } + + def parsedDecimalType: DecimalType = DecimalType(precision, scale) Review comment: `precision` and `scale` is used in other place. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
